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Dead code cleanup. (#26849)

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* Dead code cleanup.

This isn't code we're using or compiling. Removing it.

* More dead code.
pull/26846/head
Nicolas Noble 4 years ago committed by GitHub
parent bf186156bc
commit e25445a65e
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44 changed files with 0 additions and 8403 deletions
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  1. 153
      third_party/xxhash/cli/xsum_arch.h
  2. 205
      third_party/xxhash/cli/xsum_config.h
  3. 487
      third_party/xxhash/cli/xsum_os_specific.c
  4. 89
      third_party/xxhash/cli/xsum_os_specific.h
  5. 67
      third_party/xxhash/cli/xsum_output.c
  6. 62
      third_party/xxhash/cli/xsum_output.h
  7. 602
      third_party/xxhash/cli/xsum_sanity_check.c
  8. 60
      third_party/xxhash/cli/xsum_sanity_check.h
  9. 83
      third_party/xxhash/tests/Makefile
  10. 1
      third_party/xxhash/tests/bench/.clang_complete
  11. 11
      third_party/xxhash/tests/bench/.gitignore
  12. 339
      third_party/xxhash/tests/bench/LICENSE
  13. 67
      third_party/xxhash/tests/bench/Makefile
  14. 164
      third_party/xxhash/tests/bench/benchHash.c
  15. 67
      third_party/xxhash/tests/bench/benchHash.h
  16. 252
      third_party/xxhash/tests/bench/benchfn.c
  17. 183
      third_party/xxhash/tests/bench/benchfn.h
  18. 160
      third_party/xxhash/tests/bench/bhDisplay.c
  19. 61
      third_party/xxhash/tests/bench/bhDisplay.h
  20. 118
      third_party/xxhash/tests/bench/hashes.h
  21. 220
      third_party/xxhash/tests/bench/main.c
  22. 168
      third_party/xxhash/tests/bench/timefn.c
  23. 89
      third_party/xxhash/tests/bench/timefn.h
  24. 2
      third_party/xxhash/tests/collisions/.gitignore
  25. 339
      third_party/xxhash/tests/collisions/LICENSE
  26. 74
      third_party/xxhash/tests/collisions/Makefile
  27. 122
      third_party/xxhash/tests/collisions/README.md
  28. 1
      third_party/xxhash/tests/collisions/allcodecs/README.md
  29. 38
      third_party/xxhash/tests/collisions/allcodecs/dummy.c
  30. 45
      third_party/xxhash/tests/collisions/allcodecs/dummy.h
  31. 127
      third_party/xxhash/tests/collisions/hashes.h
  32. 1120
      third_party/xxhash/tests/collisions/main.c
  33. 344
      third_party/xxhash/tests/collisions/pool.c
  34. 80
      third_party/xxhash/tests/collisions/pool.h
  35. 59
      third_party/xxhash/tests/collisions/sort.cc
  36. 40
      third_party/xxhash/tests/collisions/sort.hh
  37. 82
      third_party/xxhash/tests/collisions/threading.c
  38. 124
      third_party/xxhash/tests/collisions/threading.h
  39. 154
      third_party/xxhash/tests/generate_unicode_test.c
  40. 66
      third_party/xxhash/tests/multiInclude.c
  41. 62
      third_party/xxhash/tests/ppc_define.c
  42. 165
      third_party/xxhash/xxhsum.1
  43. 148
      third_party/xxhash/xxhsum.1.md
  44. 1503
      third_party/xxhash/xxhsum.c

153
third_party/xxhash/cli/xsum_arch.h vendored
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/*
* xxhsum - Command line interface for xxhash algorithms
* Copyright (C) 2013-2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
/*
* Checks for predefined macros by the compiler to try and get both the arch
* and the compiler version.
*/
#ifndef XSUM_ARCH_H
#define XSUM_ARCH_H
#include "xsum_config.h"
#define XSUM_LIB_VERSION XXH_VERSION_MAJOR.XXH_VERSION_MINOR.XXH_VERSION_RELEASE
#define XSUM_QUOTE(str) #str
#define XSUM_EXPAND_AND_QUOTE(str) XSUM_QUOTE(str)
#define XSUM_PROGRAM_VERSION XSUM_EXPAND_AND_QUOTE(XSUM_LIB_VERSION)
/* Show compiler versions in WELCOME_MESSAGE. XSUM_CC_VERSION_FMT will return the printf specifiers,
* and VERSION will contain the comma separated list of arguments to the XSUM_CC_VERSION_FMT string. */
#if defined(__clang_version__)
/* Clang does its own thing. */
# ifdef __apple_build_version__
# define XSUM_CC_VERSION_FMT "Apple Clang %s"
# else
# define XSUM_CC_VERSION_FMT "Clang %s"
# endif
# define XSUM_CC_VERSION __clang_version__
#elif defined(__VERSION__)
/* GCC and ICC */
# define XSUM_CC_VERSION_FMT "%s"
# ifdef __INTEL_COMPILER /* icc adds its prefix */
# define XSUM_CC_VERSION __VERSION__
# else /* assume GCC */
# define XSUM_CC_VERSION "GCC " __VERSION__
# endif
#elif defined(_MSC_FULL_VER) && defined(_MSC_BUILD)
/*
* MSVC
* "For example, if the version number of the Visual C++ compiler is
* 15.00.20706.01, the _MSC_FULL_VER macro evaluates to 150020706."
*
* https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros?view=vs-2017
*/
# define XSUM_CC_VERSION_FMT "MSVC %02i.%02i.%05i.%02i"
# define XSUM_CC_VERSION _MSC_FULL_VER / 10000000 % 100, _MSC_FULL_VER / 100000 % 100, _MSC_FULL_VER % 100000, _MSC_BUILD
#elif defined(_MSC_VER) /* old MSVC */
# define XSUM_CC_VERSION_FMT "MSVC %02i.%02i"
# define XSUM_CC_VERSION _MSC_VER / 100, _MSC_VER % 100
#elif defined(__TINYC__)
/* tcc stores its version in the __TINYC__ macro. */
# define XSUM_CC_VERSION_FMT "tcc %i.%i.%i"
# define XSUM_CC_VERSION __TINYC__ / 10000 % 100, __TINYC__ / 100 % 100, __TINYC__ % 100
#else
# define XSUM_CC_VERSION_FMT "%s"
# define XSUM_CC_VERSION "unknown compiler"
#endif
/* makes the next part easier */
#if defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
# define XSUM_ARCH_X64 1
# define XSUM_ARCH_X86 "x86_64"
#elif defined(__i386__) || defined(_M_IX86) || defined(_M_IX86_FP)
# define XSUM_ARCH_X86 "i386"
#endif
/* Try to detect the architecture. */
#if defined(XSUM_ARCH_X86)
# if defined(XXHSUM_DISPATCH)
# define XSUM_ARCH XSUM_ARCH_X86 " autoVec"
# elif defined(__AVX512F__)
# define XSUM_ARCH XSUM_ARCH_X86 " + AVX512"
# elif defined(__AVX2__)
# define XSUM_ARCH XSUM_ARCH_X86 " + AVX2"
# elif defined(__AVX__)
# define XSUM_ARCH XSUM_ARCH_X86 " + AVX"
# elif defined(_M_X64) || defined(_M_AMD64) || defined(__x86_64__) \
|| defined(__SSE2__) || (defined(_M_IX86_FP) && _M_IX86_FP == 2)
# define XSUM_ARCH XSUM_ARCH_X86 " + SSE2"
# else
# define XSUM_ARCH XSUM_ARCH_X86
# endif
#elif defined(__aarch64__) || defined(__arm64__) || defined(_M_ARM64)
# define XSUM_ARCH "aarch64 + NEON"
#elif defined(__arm__) || defined(__thumb__) || defined(__thumb2__) || defined(_M_ARM)
/* ARM has a lot of different features that can change xxHash significantly. */
# if defined(__thumb2__) || (defined(__thumb__) && (__thumb__ == 2 || __ARM_ARCH >= 7))
# define XSUM_ARCH_THUMB " Thumb-2"
# elif defined(__thumb__)
# define XSUM_ARCH_THUMB " Thumb-1"
# else
# define XSUM_ARCH_THUMB ""
# endif
/* ARMv7 has unaligned by default */
# if defined(__ARM_FEATURE_UNALIGNED) || __ARM_ARCH >= 7 || defined(_M_ARMV7VE)
# define XSUM_ARCH_UNALIGNED " + unaligned"
# else
# define XSUM_ARCH_UNALIGNED ""
# endif
# if defined(__ARM_NEON) || defined(__ARM_NEON__)
# define XSUM_ARCH_NEON " + NEON"
# else
# define XSUM_ARCH_NEON ""
# endif
# define XSUM_ARCH "ARMv" XSUM_EXPAND_AND_QUOTE(__ARM_ARCH) XSUM_ARCH_THUMB XSUM_ARCH_NEON XSUM_ARCH_UNALIGNED
#elif defined(__powerpc64__) || defined(__ppc64__) || defined(__PPC64__)
# if defined(__GNUC__) && defined(__POWER9_VECTOR__)
# define XSUM_ARCH "ppc64 + POWER9 vector"
# elif defined(__GNUC__) && defined(__POWER8_VECTOR__)
# define XSUM_ARCH "ppc64 + POWER8 vector"
# else
# define XSUM_ARCH "ppc64"
# endif
#elif defined(__powerpc__) || defined(__ppc__) || defined(__PPC__)
# define XSUM_ARCH "ppc"
#elif defined(__AVR)
# define XSUM_ARCH "AVR"
#elif defined(__mips64)
# define XSUM_ARCH "mips64"
#elif defined(__mips)
# define XSUM_ARCH "mips"
#elif defined(__s390x__)
# define XSUM_ARCH "s390x"
#elif defined(__s390__)
# define XSUM_ARCH "s390"
#else
# define XSUM_ARCH "unknown"
#endif
#endif /* XSUM_ARCH_H */

205
third_party/xxhash/cli/xsum_config.h vendored
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@ -1,205 +0,0 @@
/*
* xxhsum - Command line interface for xxhash algorithms
* Copyright (C) 2013-2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
/*
* This contains various configuration parameters and feature detection for
* xxhsum.
*
* Similar to config.h in Autotools, this should be the first header included.
*/
#ifndef XSUM_CONFIG_H
#define XSUM_CONFIG_H
/* ************************************
* Compiler Options
**************************************/
/*
* Disable Visual C's warnings when using the "insecure" CRT functions instead
* of the "secure" _s functions.
*
* These functions are not portable, and aren't necessary if you are using the
* original functions properly.
*/
#if defined(_MSC_VER) || defined(_WIN32)
# ifndef _CRT_SECURE_NO_WARNINGS
# define _CRT_SECURE_NO_WARNINGS
# endif
#endif
/* Under Linux at least, pull in the *64 commands */
#ifndef _LARGEFILE64_SOURCE
# define _LARGEFILE64_SOURCE
#endif
#ifndef _FILE_OFFSET_BITS
# define _FILE_OFFSET_BITS 64
#endif
/*
* So we can use __attribute__((__format__))
*/
#ifdef __GNUC__
# define XSUM_ATTRIBUTE(x) __attribute__(x)
#else
# define XSUM_ATTRIBUTE(x)
#endif
#if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)) /* UNIX-like OS */ \
|| defined(__midipix__) || defined(__VMS))
# if (defined(__APPLE__) && defined(__MACH__)) || defined(__SVR4) || defined(_AIX) || defined(__hpux) /* POSIX.1-2001 (SUSv3) conformant */ \
|| defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) /* BSD distros */
# define XSUM_PLATFORM_POSIX_VERSION 200112L
# else
# if defined(__linux__) || defined(__linux)
# ifndef _POSIX_C_SOURCE
# define _POSIX_C_SOURCE 200112L /* use feature test macro */
# endif
# endif
# include <unistd.h> /* declares _POSIX_VERSION */
# if defined(_POSIX_VERSION) /* POSIX compliant */
# define XSUM_PLATFORM_POSIX_VERSION _POSIX_VERSION
# else
# define XSUM_PLATFORM_POSIX_VERSION 0
# endif
# endif
#endif
#if !defined(XSUM_PLATFORM_POSIX_VERSION)
# define XSUM_PLATFORM_POSIX_VERSION -1
#endif
#if !defined(S_ISREG)
# define S_ISREG(x) (((x) & S_IFMT) == S_IFREG)
#endif
/* ************************************
* Windows helpers
**************************************/
/*
* Whether to use the Windows UTF-16 APIs instead of the portable libc 8-bit
* ("ANSI") APIs.
*
* Windows is not UTF-8 clean by default, and the only way to access every file
* on the OS is to use UTF-16.
*
* Do note that xxhsum uses UTF-8 internally and only uses UTF-16 for command
* line arguments, console I/O, and opening files.
*
* Additionally, this guarantees all piped output is UTF-8.
*/
#if defined(XSUM_WIN32_USE_WCHAR) && !defined(_WIN32)
/* We use Windows APIs, only use this on Windows. */
# undef XSUM_WIN32_USE_WCHAR
#endif
#ifndef XSUM_WIN32_USE_WCHAR
# if defined(_WIN32)
# include <wchar.h>
# if WCHAR_MAX == 0xFFFFU /* UTF-16 wchar_t */
# define XSUM_WIN32_USE_WCHAR 1
# else
# define XSUM_WIN32_USE_WCHAR 0
# endif
# else
# define XSUM_WIN32_USE_WCHAR 0
# endif
#endif
#if !XSUM_WIN32_USE_WCHAR
/*
* It doesn't make sense to have one without the other.
* Due to XSUM_WIN32_USE_WCHAR being undef'd, this also handles
* non-WIN32 platforms.
*/
# undef XSUM_WIN32_USE_WMAIN
# define XSUM_WIN32_USE_WMAIN 0
#else
/*
* Whether to use wmain() or main().
*
* wmain() is preferred because we don't have to mess with internal hidden
* APIs.
*
* It always works on MSVC, but in MinGW, it only works on MinGW-w64 with the
* -municode flag.
*
* Therefore we have to use main() -- there is no better option.
*/
# ifndef XSUM_WIN32_USE_WMAIN
# if defined(_UNICODE) || defined(UNICODE) /* MinGW -municode */ \
|| defined(_MSC_VER) /* MSVC */
# define XSUM_WIN32_USE_WMAIN 1
# else
# define XSUM_WIN32_USE_WMAIN 0
# endif
# endif
/*
* It is always good practice to define these to prevent accidental use of the
* ANSI APIs, even if the program primarily uses UTF-8.
*/
# ifndef _UNICODE
# define _UNICODE
# endif
# ifndef UNICODE
# define UNICODE
# endif
#endif /* XSUM_WIN32_USE_WCHAR */
#ifndef XSUM_API
# ifdef XXH_INLINE_ALL
# define XSUM_API static
# else
# define XSUM_API
# endif
#endif
#ifndef XSUM_NO_TESTS
# define XSUM_NO_TESTS 0
#endif
/* ***************************
* Basic types
* ***************************/
#if defined(__cplusplus) /* C++ */ \
|| (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) /* C99 */
# include <stdint.h>
typedef uint8_t XSUM_U8;
typedef uint32_t XSUM_U32;
typedef uint64_t XSUM_U64;
# else
# include <limits.h>
typedef unsigned char XSUM_U8;
# if UINT_MAX == 0xFFFFFFFFUL
typedef unsigned int XSUM_U32;
# else
typedef unsigned long XSUM_U32;
# endif
typedef unsigned long long XSUM_U64;
#endif /* not C++/C99 */
#endif /* XSUM_CONFIG_H */

487
third_party/xxhash/cli/xsum_os_specific.c vendored
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@ -1,487 +0,0 @@
/*
* xxhsum - Command line interface for xxhash algorithms
* Copyright (C) 2013-2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
#include "xsum_config.h"
#include "xsum_os_specific.h"
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <sys/types.h> /* struct stat / __wstat64 */
#include <sys/stat.h> /* stat() / _stat64() */
/*
* This file contains all of the ugly boilerplate to make xxhsum work across
* platforms.
*/
#if defined(_MSC_VER) || XSUM_WIN32_USE_WCHAR
typedef struct __stat64 XSUM_stat_t;
# if defined(_MSC_VER)
typedef int mode_t;
# endif
#else
typedef struct stat XSUM_stat_t;
#endif
#if (defined(__linux__) && (XSUM_PLATFORM_POSIX_VERSION >= 1)) \
|| (XSUM_PLATFORM_POSIX_VERSION >= 200112L) \
|| defined(__DJGPP__) \
|| defined(__MSYS__)
# include <unistd.h> /* isatty */
# define XSUM_IS_CONSOLE(stdStream) isatty(fileno(stdStream))
#elif defined(MSDOS) || defined(OS2)
# include <io.h> /* _isatty */
# define XSUM_IS_CONSOLE(stdStream) _isatty(_fileno(stdStream))
#elif defined(WIN32) || defined(_WIN32)
# include <io.h> /* _isatty */
# include <windows.h> /* DeviceIoControl, HANDLE, FSCTL_SET_SPARSE */
# include <stdio.h> /* FILE */
static __inline int XSUM_IS_CONSOLE(FILE* stdStream)
{
DWORD dummy;
return _isatty(_fileno(stdStream)) && GetConsoleMode((HANDLE)_get_osfhandle(_fileno(stdStream)), &dummy);
}
#else
# define XSUM_IS_CONSOLE(stdStream) 0
#endif
#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(_WIN32)
# include <fcntl.h> /* _O_BINARY */
# include <io.h> /* _setmode, _fileno, _get_osfhandle */
# if !defined(__DJGPP__)
# include <windows.h> /* DeviceIoControl, HANDLE, FSCTL_SET_SPARSE */
# include <winioctl.h> /* FSCTL_SET_SPARSE */
# define XSUM_SET_BINARY_MODE(file) { int const unused=_setmode(_fileno(file), _O_BINARY); (void)unused; }
# else
# define XSUM_SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
# endif
#else
# define XSUM_SET_BINARY_MODE(file) ((void)file)
#endif
XSUM_API int XSUM_isConsole(FILE* stream)
{
return XSUM_IS_CONSOLE(stream);
}
XSUM_API void XSUM_setBinaryMode(FILE* stream)
{
XSUM_SET_BINARY_MODE(stream);
}
#if !XSUM_WIN32_USE_WCHAR
XSUM_API FILE* XSUM_fopen(const char* filename, const char* mode)
{
return fopen(filename, mode);
}
XSUM_ATTRIBUTE((__format__(__printf__, 2, 0)))
XSUM_API int XSUM_vfprintf(FILE* stream, const char* format, va_list ap)
{
return vfprintf(stream, format, ap);
}
static int XSUM_stat(const char* infilename, XSUM_stat_t* statbuf)
{
#if defined(_MSC_VER)
return _stat64(infilename, statbuf);
#else
return stat(infilename, statbuf);
#endif
}
#ifndef XSUM_NO_MAIN
int main(int argc, char* argv[])
{
return XSUM_main(argc, argv);
}
#endif
/* Unicode helpers for Windows to make UTF-8 act as it should. */
#else
# include <windows.h>
# include <wchar.h>
/*****************************************************************************
* Unicode conversion tools
*****************************************************************************/
/*
* Converts a UTF-8 string to UTF-16. Acts like strdup. The string must be freed afterwards.
* This version allows keeping the output length.
*/
static wchar_t* XSUM_widenString(const char* str, int* lenOut)
{
int const len = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0);
if (lenOut != NULL) *lenOut = len;
if (len == 0) return NULL;
{ wchar_t* buf = (wchar_t*)malloc((size_t)len * sizeof(wchar_t));
if (buf != NULL) {
if (MultiByteToWideChar(CP_UTF8, 0, str, -1, buf, len) == 0) {
free(buf);
return NULL;
} }
return buf;
}
}
/*
* Converts a UTF-16 string to UTF-8. Acts like strdup. The string must be freed afterwards.
* This version allows keeping the output length.
*/
static char* XSUM_narrowString(const wchar_t *str, int *lenOut)
{
int len = WideCharToMultiByte(CP_UTF8, 0, str, -1, NULL, 0, NULL, NULL);
if (lenOut != NULL) *lenOut = len;
if (len == 0) return NULL;
{ char* const buf = (char*)malloc((size_t)len * sizeof(char));
if (buf != NULL) {
if (WideCharToMultiByte(CP_UTF8, 0, str, -1, buf, len, NULL, NULL) == 0) {
free(buf);
return NULL;
} }
return buf;
}
}
/*****************************************************************************
* File helpers
*****************************************************************************/
/*
* fopen wrapper that supports UTF-8
*
* fopen will only accept ANSI filenames, which means that we can't open Unicode filenames.
*
* In order to open a Unicode filename, we need to convert filenames to UTF-16 and use _wfopen.
*/
XSUM_API FILE* XSUM_fopen(const char* filename, const char* mode)
{
FILE* f = NULL;
wchar_t* const wide_filename = XSUM_widenString(filename, NULL);
if (wide_filename != NULL) {
wchar_t* const wide_mode = XSUM_widenString(mode, NULL);
if (wide_mode != NULL) {
f = _wfopen(wide_filename, wide_mode);
free(wide_mode);
}
free(wide_filename);
}
return f;
}
/*
* stat() wrapper which supports UTF-8 filenames.
*/
static int XSUM_stat(const char* infilename, XSUM_stat_t* statbuf)
{
int r = -1;
wchar_t* const wide_filename = XSUM_widenString(infilename, NULL);
if (wide_filename != NULL) {
r = _wstat64(wide_filename, statbuf);
free(wide_filename);
}
return r;
}
/*
* In case it isn't available, this is what MSVC 2019 defines in stdarg.h.
*/
#if defined(_MSC_VER) && !defined(__clang__) && !defined(va_copy)
# define XSUM_va_copy(destination, source) ((destination) = (source))
#else
# define XSUM_va_copy(destination, source) va_copy(destination, source)
#endif
/*
* vasprintf for Windows.
*/
XSUM_ATTRIBUTE((__format__(__printf__, 2, 0)))
static int XSUM_vasprintf(char** strp, const char* format, va_list ap)
{
int ret;
int size;
va_list copy;
/*
* To be safe, make a va_copy.
*
* Note that Microsoft doesn't use va_copy in its sample code:
* https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/vsprintf-vsprintf-l-vswprintf-vswprintf-l-vswprintf-l?view=vs-2019
*/
XSUM_va_copy(copy, ap);
/* Calculate how many characters we need */
size = _vscprintf(format, ap);
va_end(copy);
if (size < 0) {
*strp = NULL;
return size;
} else {
*strp = (char*) malloc((size_t)size + 1);
if (*strp == NULL) {
return -1;
}
/* vsprintf into the new buffer */
ret = vsprintf(*strp, format, ap);
if (ret < 0) {
free(*strp);
*strp = NULL;
}
return ret;
}
}
/*
* fprintf wrapper that supports UTF-8.
*
* fprintf doesn't properly handle Unicode on Windows.
*
* Additionally, it is codepage sensitive on console and may crash the program.
*
* Instead, we use vsnprintf, and either print with fwrite or convert to UTF-16
* for console output and use the codepage-independent WriteConsoleW.
*
* Credit to t-mat: https://github.com/t-mat/xxHash/commit/5691423
*/
XSUM_ATTRIBUTE((__format__(__printf__, 2, 0)))
XSUM_API int XSUM_vfprintf(FILE *stream, const char *format, va_list ap)
{
int result;
char* u8_str = NULL;
/*
* Generate the UTF-8 output string with vasprintf.
*/
result = XSUM_vasprintf(&u8_str, format, ap);
if (result >= 0) {
const size_t nchar = (size_t)result + 1;
/*
* Check if we are outputting to a console. Don't use XSUM_isConsole
* directly -- we don't need to call _get_osfhandle twice.
*/
int fileNb = _fileno(stream);
intptr_t handle_raw = _get_osfhandle(fileNb);
HANDLE handle = (HANDLE)handle_raw;
DWORD dwTemp;
if (handle_raw < 0) {
result = -1;
} else if (_isatty(fileNb) && GetConsoleMode(handle, &dwTemp)) {
/*
* Convert to UTF-16 and output with WriteConsoleW.
*
* This is codepage independent and works on Windows XP's default
* msvcrt.dll.
*/
int len;
wchar_t* const u16_buf = XSUM_widenString(u8_str, &len);
if (u16_buf == NULL) {
result = -1;
} else {
if (WriteConsoleW(handle, u16_buf, (DWORD)len - 1, &dwTemp, NULL)) {
result = (int)dwTemp;
} else {
result = -1;
}
free(u16_buf);
}
} else {
/* fwrite the UTF-8 string if we are printing to a file */
result = (int)fwrite(u8_str, 1, nchar - 1, stream);
if (result == 0) {
result = -1;
}
}
free(u8_str);
}
return result;
}
#ifndef XSUM_NO_MAIN
/*****************************************************************************
* Command Line argument parsing
*****************************************************************************/
/* Converts a UTF-16 argv to UTF-8. */
static char** XSUM_convertArgv(int argc, wchar_t* utf16_argv[])
{
char** const utf8_argv = (char**)malloc((size_t)(argc + 1) * sizeof(char*));
if (utf8_argv != NULL) {
int i;
for (i = 0; i < argc; i++) {
utf8_argv[i] = XSUM_narrowString(utf16_argv[i], NULL);
if (utf8_argv[i] == NULL) {
/* Out of memory, whoops. */
while (i-- > 0) {
free(utf8_argv[i]);
}
free(utf8_argv);
return NULL;
}
}
utf8_argv[argc] = NULL;
}
return utf8_argv;
}
/* Frees arguments returned by XSUM_convertArgv */
static void XSUM_freeArgv(int argc, char** argv)
{
int i;
if (argv == NULL) {
return;
}
for (i = 0; i < argc; i++) {
free(argv[i]);
}
free(argv);
}
static int XSUM_wmain(int argc, wchar_t* utf16_argv[])
{
/* Convert the UTF-16 arguments to UTF-8. */
char** utf8_argv = XSUM_convertArgv(argc, utf16_argv);
if (utf8_argv == NULL) {
/* An unfortunate but incredibly unlikely error. */
fprintf(stderr, "xxhsum: error converting command line arguments!\n");
abort();
} else {
int ret;
/*
* MinGW's terminal uses full block buffering for stderr.
*
* This is nonstandard behavior and causes text to not display until
* the buffer fills.
*
* `setvbuf()` can easily correct this to make text display instantly.
*/
setvbuf(stderr, NULL, _IONBF, 0);
/* Call our real main function */
ret = XSUM_main(argc, utf8_argv);
/* Cleanup */
XSUM_freeArgv(argc, utf8_argv);
return ret;
}
}
#if XSUM_WIN32_USE_WMAIN
/*
* The preferred method of obtaining the real UTF-16 arguments. Always works
* on MSVC, sometimes works on MinGW-w64 depending on the compiler flags.
*/
#ifdef __cplusplus
extern "C"
#endif
int __cdecl wmain(int argc, wchar_t* utf16_argv[])
{
return XSUM_wmain(argc, utf16_argv);
}
#else /* !XSUM_WIN32_USE_WMAIN */
/*
* Wrap `XSUM_wmain()` using `main()` and `__wgetmainargs()` on MinGW without
* Unicode support.
*
* `__wgetmainargs()` is used in the CRT startup to retrieve the arguments for
* `wmain()`, so we use it on MinGW to emulate `wmain()`.
*
* It is an internal function and not declared in any public headers, so we
* have to declare it manually.
*
* An alternative that doesn't mess with internal APIs is `GetCommandLineW()`
* with `CommandLineToArgvW()`, but the former doesn't expand wildcards and the
* latter requires linking to Shell32.dll and its numerous dependencies.
*
* This method keeps our dependencies to kernel32.dll and the CRT.
*
* https://docs.microsoft.com/en-us/cpp/c-runtime-library/getmainargs-wgetmainargs?view=vs-2019
*/
typedef struct {
int newmode;
} _startupinfo;
#ifdef __cplusplus
extern "C"
#endif
int __cdecl __wgetmainargs(
int* Argc,
wchar_t*** Argv,
wchar_t*** Env,
int DoWildCard,
_startupinfo* StartInfo
);
int main(int ansi_argc, char* ansi_argv[])
{
int utf16_argc;
wchar_t** utf16_argv;
wchar_t** utf16_envp; /* Unused but required */
_startupinfo startinfo = {0}; /* 0 == don't change new mode */
/* Get wmain's UTF-16 arguments. Make sure we expand wildcards. */
if (__wgetmainargs(&utf16_argc, &utf16_argv, &utf16_envp, 1, &startinfo) < 0)
/* In the very unlikely case of an error, use the ANSI arguments. */
return XSUM_main(ansi_argc, ansi_argv);
/* Call XSUM_wmain with our UTF-16 arguments */
return XSUM_wmain(utf16_argc, utf16_argv);
}
#endif /* !XSUM_WIN32_USE_WMAIN */
#endif /* !XSUM_NO_MAIN */
#endif /* XSUM_WIN32_USE_WCHAR */
/*
* Determines whether the file at filename is a directory.
*/
XSUM_API int XSUM_isDirectory(const char* filename)
{
XSUM_stat_t statbuf;
int r = XSUM_stat(filename, &statbuf);
#ifdef _MSC_VER
if (!r && (statbuf.st_mode & _S_IFDIR)) return 1;
#else
if (!r && S_ISDIR(statbuf.st_mode)) return 1;
#endif
return 0;
}
/*
* Returns the filesize of the file at filename.
*/
XSUM_API XSUM_U64 XSUM_getFileSize(const char* filename)
{
XSUM_stat_t statbuf;
int r = XSUM_stat(filename, &statbuf);
if (r || !S_ISREG(statbuf.st_mode)) return 0; /* No good... */
return (XSUM_U64)statbuf.st_size;
}

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/*
* xxhsum - Command line interface for xxhash algorithms
* Copyright (C) 2013-2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
#ifndef XSUM_OS_SPECIFIC_H
#define XSUM_OS_SPECIFIC_H
#include "xsum_config.h"
#include <stdio.h>
#include <stdarg.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Declared here to be implemented in user code.
*
* Functions like main(), but is passed UTF-8 arguments even on Windows.
*/
XSUM_API int XSUM_main(int argc, char* argv[]);
/*
* Returns whether stream is a console.
*
* Functionally equivalent to isatty(fileno(stream)).
*/
XSUM_API int XSUM_isConsole(FILE* stream);
/*
* Sets stream to pure binary mode (a.k.a. no CRLF conversions).
*/
XSUM_API void XSUM_setBinaryMode(FILE* stream);
/*
* Returns whether the file at filename is a directory.
*/
XSUM_API int XSUM_isDirectory(const char* filename);
/*
* Returns the file size of the file at filename.
*/
XSUM_API XSUM_U64 XSUM_getFileSize(const char* filename);
/*
* UTF-8 stdio wrappers primarily for Windows
*/
/*
* fopen() wrapper. Accepts UTF-8 filenames on Windows.
*
* Specifically, on Windows, the arguments will be converted to UTF-16
* and passed to _wfopen().
*/
XSUM_API FILE* XSUM_fopen(const char* filename, const char* mode);
/*
* vfprintf() wrapper which prints UTF-8 strings to Windows consoles
* if applicable.
*/
XSUM_ATTRIBUTE((__format__(__printf__, 2, 0)))
XSUM_API int XSUM_vfprintf(FILE* stream, const char* format, va_list ap);
#ifdef __cplusplus
}
#endif
#endif /* XSUM_OS_SPECIFIC_H */

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/*
* xxhsum - Command line interface for xxhash algorithms
* Copyright (C) 2013-2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
#include "xsum_output.h"
#include "xsum_os_specific.h"
#include <stdio.h>
int XSUM_logLevel = 2;
XSUM_ATTRIBUTE((__format__(__printf__, 1, 2)))
XSUM_API int XSUM_log(const char* format, ...)
{
int ret;
va_list ap;
va_start(ap, format);
ret = XSUM_vfprintf(stderr, format, ap);
va_end(ap);
return ret;
}
XSUM_ATTRIBUTE((__format__(__printf__, 1, 2)))
XSUM_API int XSUM_output(const char* format, ...)
{
int ret;
va_list ap;
va_start(ap, format);
ret = XSUM_vfprintf(stdout, format, ap);
va_end(ap);
return ret;
}
XSUM_ATTRIBUTE((__format__(__printf__, 2, 3)))
XSUM_API int XSUM_logVerbose(int minLevel, const char* format, ...)
{
if (XSUM_logLevel >= minLevel) {
int ret;
va_list ap;
va_start(ap, format);
ret = XSUM_vfprintf(stderr, format, ap);
va_end(ap);
return ret;
}
return 0;
}

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/*
* xxhsum - Command line interface for xxhash algorithms
* Copyright (C) 2013-2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
#ifndef XSUM_OUTPUT_H
#define XSUM_OUTPUT_H
#include "xsum_config.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
* How verbose the output is.
*/
extern int XSUM_logLevel;
/*
* Same as fprintf(stderr, format, ...)
*/
XSUM_ATTRIBUTE((__format__(__printf__, 1, 2)))
XSUM_API int XSUM_log(const char *format, ...);
/*
* Like XSUM_log, but only outputs if XSUM_logLevel >= minLevel.
*/
XSUM_ATTRIBUTE((__format__(__printf__, 2, 3)))
XSUM_API int XSUM_logVerbose(int minLevel, const char *format, ...);
/*
* Same as printf(format, ...)
*/
XSUM_ATTRIBUTE((__format__(__printf__, 1, 2)))
XSUM_API int XSUM_output(const char *format, ...);
#ifdef __cplusplus
}
#endif
#endif /* XSUM_OUTPUT_H */

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/*
* xxhsum - Command line interface for xxhash algorithms
* Copyright (C) 2013-2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
#include "xsum_config.h"
#include "xsum_sanity_check.h"
#include "xsum_output.h"
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#ifndef XXH_STATIC_LINKING_ONLY
# define XXH_STATIC_LINKING_ONLY
#endif
#include "../xxhash.h"
/* use #define to make them constant, required for initialization */
#define PRIME32 2654435761U
#define PRIME64 11400714785074694797ULL
/*
* Fills a test buffer with pseudorandom data.
*
* This is used in the sanity check - its values must not be changed.
*/
XSUM_API void XSUM_fillTestBuffer(XSUM_U8* buffer, size_t len)
{
XSUM_U64 byteGen = PRIME32;
size_t i;
assert(buffer != NULL);
for (i=0; i<len; i++) {
buffer[i] = (XSUM_U8)(byteGen>>56);
byteGen *= PRIME64;
}
}
/* ************************************************
* Self-test:
* ensure results consistency accross platforms
*********************************************** */
#if XSUM_NO_TESTS
XSUM_API void XSUM_sanityCheck(void)
{
XSUM_log("This version of xxhsum is not verified.\n");
}
#else
/*
* Test data vectors
*/
typedef struct {
XSUM_U32 len;
XSUM_U32 seed;
XSUM_U32 Nresult;
} XSUM_testdata32_t;
typedef struct {
XSUM_U32 len;
XSUM_U64 seed;
XSUM_U64 Nresult;
} XSUM_testdata64_t;
typedef struct {
XSUM_U32 len;
XSUM_U64 seed;
XXH128_hash_t Nresult;
} XSUM_testdata128_t;
#define SECRET_SAMPLE_NBBYTES 4
typedef struct {
XSUM_U32 len;
XSUM_U8 byte[SECRET_SAMPLE_NBBYTES];
} XSUM_testdata_sample_t;
/* XXH32 */
static const XSUM_testdata32_t XSUM_XXH32_testdata[] = {
{ 0, 0, 0x02CC5D05U },
{ 0, PRIME32, 0x36B78AE7U },
{ 1, 0, 0xCF65B03EU },
{ 1, PRIME32, 0xB4545AA4U },
{ 14, 0, 0x1208E7E2U },
{ 14, PRIME32, 0x6AF1D1FEU },
{ 222, 0, 0x5BD11DBDU },
{ 222, PRIME32, 0x58803C5FU }
};
/* XXH64 */
static const XSUM_testdata64_t XSUM_XXH64_testdata[] = {
{ 0, 0, 0xEF46DB3751D8E999ULL },
{ 0, PRIME32, 0xAC75FDA2929B17EFULL },
{ 1, 0, 0xE934A84ADB052768ULL },
{ 1, PRIME32, 0x5014607643A9B4C3ULL },
{ 4, 0, 0x9136A0DCA57457EEULL },
{ 14, 0, 0x8282DCC4994E35C8ULL },
{ 14, PRIME32, 0xC3BD6BF63DEB6DF0ULL },
{ 222, 0, 0xB641AE8CB691C174ULL },
{ 222, PRIME32, 0x20CB8AB7AE10C14AULL }
};
/*
* XXH3:
* Due to being a more complex hash function with specializations for certain
* lengths, a more extensive test is used for XXH3.
*/
/* XXH3_64bits, seeded */
static const XSUM_testdata64_t XSUM_XXH3_testdata[] = {
{ 0, 0, 0x2D06800538D394C2ULL }, /* empty string */
{ 0, PRIME64, 0xA8A6B918B2F0364AULL }, /* empty string */
{ 1, 0, 0xC44BDFF4074EECDBULL }, /* 1 - 3 */
{ 1, PRIME64, 0x032BE332DD766EF8ULL }, /* 1 - 3 */
{ 6, 0, 0x27B56A84CD2D7325ULL }, /* 4 - 8 */
{ 6, PRIME64, 0x84589C116AB59AB9ULL }, /* 4 - 8 */
{ 12, 0, 0xA713DAF0DFBB77E7ULL }, /* 9 - 16 */
{ 12, PRIME64, 0xE7303E1B2336DE0EULL }, /* 9 - 16 */
{ 24, 0, 0xA3FE70BF9D3510EBULL }, /* 17 - 32 */
{ 24, PRIME64, 0x850E80FC35BDD690ULL }, /* 17 - 32 */
{ 48, 0, 0x397DA259ECBA1F11ULL }, /* 33 - 64 */
{ 48, PRIME64, 0xADC2CBAA44ACC616ULL }, /* 33 - 64 */
{ 80, 0, 0xBCDEFBBB2C47C90AULL }, /* 65 - 96 */
{ 80, PRIME64, 0xC6DD0CB699532E73ULL }, /* 65 - 96 */
{ 195, 0, 0xCD94217EE362EC3AULL }, /* 129-240 */
{ 195, PRIME64, 0xBA68003D370CB3D9ULL }, /* 129-240 */
{ 403, 0, 0xCDEB804D65C6DEA4ULL }, /* one block, last stripe is overlapping */
{ 403, PRIME64, 0x6259F6ECFD6443FDULL }, /* one block, last stripe is overlapping */
{ 512, 0, 0x617E49599013CB6BULL }, /* one block, finishing at stripe boundary */
{ 512, PRIME64, 0x3CE457DE14C27708ULL }, /* one block, finishing at stripe boundary */
{ 2048, 0, 0xDD59E2C3A5F038E0ULL }, /* 2 blocks, finishing at block boundary */
{ 2048, PRIME64, 0x66F81670669ABABCULL }, /* 2 blocks, finishing at block boundary */
{ 2240, 0, 0x6E73A90539CF2948ULL }, /* 3 blocks, finishing at stripe boundary */
{ 2240, PRIME64, 0x757BA8487D1B5247ULL }, /* 3 blocks, finishing at stripe boundary */
{ 2367, 0, 0xCB37AEB9E5D361EDULL }, /* 3 blocks, last stripe is overlapping */
{ 2367, PRIME64, 0xD2DB3415B942B42AULL } /* 3 blocks, last stripe is overlapping */
};
/* XXH3_64bits, custom secret */
static const XSUM_testdata64_t XSUM_XXH3_withSecret_testdata[] = {
{ 0, 0, 0x3559D64878C5C66CULL }, /* empty string */
{ 1, 0, 0x8A52451418B2DA4DULL }, /* 1 - 3 */
{ 6, 0, 0x82C90AB0519369ADULL }, /* 4 - 8 */
{ 12, 0, 0x14631E773B78EC57ULL }, /* 9 - 16 */
{ 24, 0, 0xCDD5542E4A9D9FE8ULL }, /* 17 - 32 */
{ 48, 0, 0x33ABD54D094B2534ULL }, /* 33 - 64 */
{ 80, 0, 0xE687BA1684965297ULL }, /* 65 - 96 */
{ 195, 0, 0xA057273F5EECFB20ULL }, /* 129-240 */
{ 403, 0, 0x14546019124D43B8ULL }, /* one block, last stripe is overlapping */
{ 512, 0, 0x7564693DD526E28DULL }, /* one block, finishing at stripe boundary */
{ 2048, 0, 0xD32E975821D6519FULL }, /* >= 2 blodcks, at least one scrambling */
{ 2367, 0, 0x293FA8E5173BB5E7ULL }, /* >= 2 blocks, at least one scrambling, last stripe unaligned */
{ 64*10*3, 0, 0x751D2EC54BC6038BULL } /* exactly 3 full blocks, not a multiple of 256 */
};
/* XXH3_128bits, seeded */
static const XSUM_testdata128_t XSUM_XXH128_testdata[] = {
{ 0, 0, { 0x6001C324468D497FULL, 0x99AA06D3014798D8ULL } }, /* empty string */
{ 0, PRIME32, { 0x5444F7869C671AB0ULL, 0x92220AE55E14AB50ULL } }, /* empty string */
{ 1, 0, { 0xC44BDFF4074EECDBULL, 0xA6CD5E9392000F6AULL } }, /* 1 - 3 */
{ 1, PRIME32, { 0xB53D5557E7F76F8DULL, 0x89B99554BA22467CULL } }, /* 1 - 3 */
{ 6, 0, { 0x3E7039BDDA43CFC6ULL, 0x082AFE0B8162D12AULL } }, /* 4 - 8 */
{ 6, PRIME32, { 0x269D8F70BE98856EULL, 0x5A865B5389ABD2B1ULL } }, /* 4 - 8 */
{ 12, 0, { 0x061A192713F69AD9ULL, 0x6E3EFD8FC7802B18ULL } }, /* 9 - 16 */
{ 12, PRIME32, { 0x9BE9F9A67F3C7DFBULL, 0xD7E09D518A3405D3ULL } }, /* 9 - 16 */
{ 24, 0, { 0x1E7044D28B1B901DULL, 0x0CE966E4678D3761ULL } }, /* 17 - 32 */
{ 24, PRIME32, { 0xD7304C54EBAD40A9ULL, 0x3162026714A6A243ULL } }, /* 17 - 32 */
{ 48, 0, { 0xF942219AED80F67BULL, 0xA002AC4E5478227EULL } }, /* 33 - 64 */
{ 48, PRIME32, { 0x7BA3C3E453A1934EULL, 0x163ADDE36C072295ULL } }, /* 33 - 64 */
{ 81, 0, { 0x5E8BAFB9F95FB803ULL, 0x4952F58181AB0042ULL } }, /* 65 - 96 */
{ 81, PRIME32, { 0x703FBB3D7A5F755CULL, 0x2724EC7ADC750FB6ULL } }, /* 65 - 96 */
{ 222, 0, { 0xF1AEBD597CEC6B3AULL, 0x337E09641B948717ULL } }, /* 129-240 */
{ 222, PRIME32, { 0xAE995BB8AF917A8DULL, 0x91820016621E97F1ULL } }, /* 129-240 */
{ 403, 0, { 0xCDEB804D65C6DEA4ULL, 0x1B6DE21E332DD73DULL } }, /* one block, last stripe is overlapping */
{ 403, PRIME64, { 0x6259F6ECFD6443FDULL, 0xBED311971E0BE8F2ULL } }, /* one block, last stripe is overlapping */
{ 512, 0, { 0x617E49599013CB6BULL, 0x18D2D110DCC9BCA1ULL } }, /* one block, finishing at stripe boundary */
{ 512, PRIME64, { 0x3CE457DE14C27708ULL, 0x925D06B8EC5B8040ULL } }, /* one block, finishing at stripe boundary */
{ 2048, 0, { 0xDD59E2C3A5F038E0ULL, 0xF736557FD47073A5ULL } }, /* 2 blocks, finishing at block boundary */
{ 2048, PRIME32, { 0x230D43F30206260BULL, 0x7FB03F7E7186C3EAULL } }, /* 2 blocks, finishing at block boundary */
{ 2240, 0, { 0x6E73A90539CF2948ULL, 0xCCB134FBFA7CE49DULL } }, /* 3 blocks, finishing at stripe boundary */
{ 2240, PRIME32, { 0xED385111126FBA6FULL, 0x50A1FE17B338995FULL } }, /* 3 blocks, finishing at stripe boundary */
{ 2367, 0, { 0xCB37AEB9E5D361EDULL, 0xE89C0F6FF369B427ULL } }, /* 3 blocks, last stripe is overlapping */
{ 2367, PRIME32, { 0x6F5360AE69C2F406ULL, 0xD23AAE4B76C31ECBULL } } /* 3 blocks, last stripe is overlapping */
};
/* XXH128, custom secret */
static const XSUM_testdata128_t XSUM_XXH128_withSecret_testdata[] = {
{ 0, 0, { 0x005923CCEECBE8AEULL, 0x5F70F4EA232F1D38ULL } }, /* empty string */
{ 1, 0, { 0x8A52451418B2DA4DULL, 0x3A66AF5A9819198EULL } }, /* 1 - 3 */
{ 6, 0, { 0x0B61C8ACA7D4778FULL, 0x376BD91B6432F36DULL } }, /* 4 - 8 */
{ 12, 0, { 0xAF82F6EBA263D7D8ULL, 0x90A3C2D839F57D0FULL } } /* 9 - 16 */
};
static const XSUM_testdata_sample_t XSUM_XXH3_generateSecret_testdata[] = {
{ 0, { 0xB8, 0x26, 0x83, 0x7E } },
{ 1, { 0xA6, 0x16, 0x06, 0x7B } },
{ XXH3_SECRET_SIZE_MIN - 1, { 0xDA, 0x2A, 0x12, 0x11 } },
{ XXH3_SECRET_DEFAULT_SIZE + 500, { 0x7E, 0x48, 0x0C, 0xA7 } }
};
static void XSUM_checkResult32(XXH32_hash_t r1, XXH32_hash_t r2)
{
static int nbTests = 1;
if (r1!=r2) {
XSUM_log("\rError: 32-bit hash test %i: Internal sanity check failed!\n", nbTests);
XSUM_log("\rGot 0x%08X, expected 0x%08X.\n", (unsigned)r1, (unsigned)r2);
XSUM_log("\rNote: If you modified the hash functions, make sure to either update the values\n"
"or temporarily recompile with XSUM_NO_TESTS=1.\n");
exit(1);
}
nbTests++;
}
static void XSUM_checkResult64(XXH64_hash_t r1, XXH64_hash_t r2)
{
static int nbTests = 1;
if (r1!=r2) {
XSUM_log("\rError: 64-bit hash test %i: Internal sanity check failed!\n", nbTests);
XSUM_log("\rGot 0x%08X%08XULL, expected 0x%08X%08XULL.\n",
(unsigned)(r1>>32), (unsigned)r1, (unsigned)(r2>>32), (unsigned)r2);
XSUM_log("\rNote: If you modified the hash functions, make sure to either update the values\n"
"or temporarily recompile with XSUM_NO_TESTS=1.\n");
exit(1);
}
nbTests++;
}
static void XSUM_checkResult128(XXH128_hash_t r1, XXH128_hash_t r2)
{
static int nbTests = 1;
if ((r1.low64 != r2.low64) || (r1.high64 != r2.high64)) {
XSUM_log("\rError: 128-bit hash test %i: Internal sanity check failed.\n", nbTests);
XSUM_log("\rGot { 0x%08X%08XULL, 0x%08X%08XULL }, expected { 0x%08X%08XULL, 0x%08X%08XULL } \n",
(unsigned)(r1.low64>>32), (unsigned)r1.low64, (unsigned)(r1.high64>>32), (unsigned)r1.high64,
(unsigned)(r2.low64>>32), (unsigned)r2.low64, (unsigned)(r2.high64>>32), (unsigned)r2.high64 );
XSUM_log("\rNote: If you modified the hash functions, make sure to either update the values\n"
"or temporarily recompile with XSUM_NO_TESTS=1.\n");
exit(1);
}
nbTests++;
}
static void XSUM_testXXH32(const void* data, const XSUM_testdata32_t* testData)
{
XXH32_state_t *state = XXH32_createState();
size_t pos;
size_t len = testData->len;
XSUM_U32 seed = testData->seed;
XSUM_U32 Nresult = testData->Nresult;
if (len == 0) {
data = NULL;
} else {
assert(data != NULL);
}
assert(state != NULL);
XSUM_checkResult32(XXH32(data, len, seed), Nresult);
(void)XXH32_reset(state, seed);
(void)XXH32_update(state, data, len);
XSUM_checkResult32(XXH32_digest(state), Nresult);
(void)XXH32_reset(state, seed);
for (pos=0; pos<len; pos++)
(void)XXH32_update(state, ((const char*)data)+pos, 1);
XSUM_checkResult32(XXH32_digest(state), Nresult);
XXH32_freeState(state);
}
static void XSUM_testXXH64(const void* data, const XSUM_testdata64_t* testData)
{
XXH64_state_t *state = XXH64_createState();
size_t pos;
size_t len = (size_t)testData->len;
XSUM_U64 seed = testData->seed;
XSUM_U64 Nresult = testData->Nresult;
if (len == 0) {
data = NULL;
} else {
assert(data != NULL);
}
assert(state != NULL);
XSUM_checkResult64(XXH64(data, len, seed), Nresult);
(void)XXH64_reset(state, seed);
(void)XXH64_update(state, data, len);
XSUM_checkResult64(XXH64_digest(state), Nresult);
(void)XXH64_reset(state, seed);
for (pos=0; pos<len; pos++)
(void)XXH64_update(state, ((const char*)data)+pos, 1);
XSUM_checkResult64(XXH64_digest(state), Nresult);
XXH64_freeState(state);
}
/*
* Used to get "random" (but actually 100% reproducible) lengths for
* XSUM_XXH3_randomUpdate.
*/
static XSUM_U32 XSUM_rand(void)
{
static XSUM_U64 seed = PRIME32;
seed *= PRIME64;
return (XSUM_U32)(seed >> 40);
}
/*
* Technically, XXH3_64bits_update is identical to XXH3_128bits_update as of
* v0.8.0, but we treat them as separate.
*/
typedef XXH_errorcode (*XSUM_XXH3_update_t)(XXH3_state_t* state, const void* input, size_t length);
/*
* Runs the passed XXH3_update variant on random lengths. This is to test the
* more complex logic of the update function, catching bugs like this one:
* https://github.com/Cyan4973/xxHash/issues/378
*/
static void XSUM_XXH3_randomUpdate(XXH3_state_t* state, const void* data,
size_t len, XSUM_XXH3_update_t update_fn)
{
size_t p = 0;
while (p < len) {
size_t const modulo = len > 2 ? len : 2;
size_t l = (size_t)(XSUM_rand()) % modulo;
if (p + l > len) l = len - p;
(void)update_fn(state, (const char*)data+p, l);
p += l;
}
}
static void XSUM_testXXH3(const void* data, const XSUM_testdata64_t* testData)
{
size_t len = testData->len;
XSUM_U64 seed = testData->seed;
XSUM_U64 Nresult = testData->Nresult;
if (len == 0) {
data = NULL;
} else {
assert(data != NULL);
}
{ XSUM_U64 const Dresult = XXH3_64bits_withSeed(data, len, seed);
XSUM_checkResult64(Dresult, Nresult);
}
/* check that the no-seed variant produces same result as seed==0 */
if (seed == 0) {
XSUM_U64 const Dresult = XXH3_64bits(data, len);
XSUM_checkResult64(Dresult, Nresult);
}
/* streaming API test */
{ XXH3_state_t* const state = XXH3_createState();
assert(state != NULL);
/* single ingestion */
(void)XXH3_64bits_reset_withSeed(state, seed);
(void)XXH3_64bits_update(state, data, len);
XSUM_checkResult64(XXH3_64bits_digest(state), Nresult);
/* random ingestion */
(void)XXH3_64bits_reset_withSeed(state, seed);
XSUM_XXH3_randomUpdate(state, data, len, &XXH3_64bits_update);
XSUM_checkResult64(XXH3_64bits_digest(state), Nresult);
/* byte by byte ingestion */
{ size_t pos;
(void)XXH3_64bits_reset_withSeed(state, seed);
for (pos=0; pos<len; pos++)
(void)XXH3_64bits_update(state, ((const char*)data)+pos, 1);
XSUM_checkResult64(XXH3_64bits_digest(state), Nresult);
}
XXH3_freeState(state);
}
}
static void XSUM_testXXH3_withSecret(const void* data, const void* secret,
size_t secretSize, const XSUM_testdata64_t* testData)
{
size_t len = (size_t)testData->len;
XSUM_U64 Nresult = testData->Nresult;
if (len == 0) {
data = NULL;
} else {
assert(data != NULL);
}
{ XSUM_U64 const Dresult = XXH3_64bits_withSecret(data, len, secret, secretSize);
XSUM_checkResult64(Dresult, Nresult);
}
/* streaming API test */
{ XXH3_state_t *state = XXH3_createState();
assert(state != NULL);
(void)XXH3_64bits_reset_withSecret(state, secret, secretSize);
(void)XXH3_64bits_update(state, data, len);
XSUM_checkResult64(XXH3_64bits_digest(state), Nresult);
/* random ingestion */
(void)XXH3_64bits_reset_withSecret(state, secret, secretSize);
XSUM_XXH3_randomUpdate(state, data, len, &XXH3_64bits_update);
XSUM_checkResult64(XXH3_64bits_digest(state), Nresult);
/* byte by byte ingestion */
{ size_t pos;
(void)XXH3_64bits_reset_withSecret(state, secret, secretSize);
for (pos=0; pos<len; pos++)
(void)XXH3_64bits_update(state, ((const char*)data)+pos, 1);
XSUM_checkResult64(XXH3_64bits_digest(state), Nresult);
}
XXH3_freeState(state);
}
}
static void XSUM_testXXH128(const void* data, const XSUM_testdata128_t* testData)
{
size_t len = (size_t)testData->len;
XSUM_U64 seed = testData->seed;
XXH128_hash_t const Nresult = testData->Nresult;
if (len == 0) {
data = NULL;
} else {
assert(data != NULL);
}
{ XXH128_hash_t const Dresult = XXH3_128bits_withSeed(data, len, seed);
XSUM_checkResult128(Dresult, Nresult);
}
/* check that XXH128() is identical to XXH3_128bits_withSeed() */
{ XXH128_hash_t const Dresult2 = XXH128(data, len, seed);
XSUM_checkResult128(Dresult2, Nresult);
}
/* check that the no-seed variant produces same result as seed==0 */
if (seed == 0) {
XXH128_hash_t const Dresult = XXH3_128bits(data, len);
XSUM_checkResult128(Dresult, Nresult);
}
/* streaming API test */
{ XXH3_state_t *state = XXH3_createState();
assert(state != NULL);
/* single ingestion */
(void)XXH3_128bits_reset_withSeed(state, seed);
(void)XXH3_128bits_update(state, data, len);
XSUM_checkResult128(XXH3_128bits_digest(state), Nresult);
/* random ingestion */
(void)XXH3_128bits_reset_withSeed(state, seed);
XSUM_XXH3_randomUpdate(state, data, len, &XXH3_128bits_update);
XSUM_checkResult128(XXH3_128bits_digest(state), Nresult);
/* byte by byte ingestion */
{ size_t pos;
(void)XXH3_128bits_reset_withSeed(state, seed);
for (pos=0; pos<len; pos++)
(void)XXH3_128bits_update(state, ((const char*)data)+pos, 1);
XSUM_checkResult128(XXH3_128bits_digest(state), Nresult);
}
XXH3_freeState(state);
}
}
static void XSUM_testXXH128_withSecret(const void* data, const void* secret, size_t secretSize, const XSUM_testdata128_t* testData)
{
size_t len = testData->len;
XXH128_hash_t Nresult = testData->Nresult;
if (len == 0) {
data = NULL;
} else if (len>0) {
assert(data != NULL);
}
{ XXH128_hash_t const Dresult = XXH3_128bits_withSecret(data, len, secret, secretSize);
XSUM_checkResult128(Dresult, Nresult);
}
/* streaming API test */
{ XXH3_state_t* const state = XXH3_createState();
assert(state != NULL);
(void)XXH3_128bits_reset_withSecret(state, secret, secretSize);
(void)XXH3_128bits_update(state, data, len);
XSUM_checkResult128(XXH3_128bits_digest(state), Nresult);
/* random ingestion */
(void)XXH3_128bits_reset_withSecret(state, secret, secretSize);
XSUM_XXH3_randomUpdate(state, data, len, &XXH3_128bits_update);
XSUM_checkResult128(XXH3_128bits_digest(state), Nresult);
/* byte by byte ingestion */
{ size_t pos;
(void)XXH3_128bits_reset_withSecret(state, secret, secretSize);
for (pos=0; pos<len; pos++)
(void)XXH3_128bits_update(state, ((const char*)data)+pos, 1);
XSUM_checkResult128(XXH3_128bits_digest(state), Nresult);
}
XXH3_freeState(state);
}
}
static void XSUM_testSecretGenerator(const void* customSeed, const XSUM_testdata_sample_t* testData)
{
static int nbTests = 1;
const int sampleIndex[SECRET_SAMPLE_NBBYTES] = { 0, 62, 131, 191};
XSUM_U8 secretBuffer[XXH3_SECRET_DEFAULT_SIZE] = {0};
XSUM_U8 samples[SECRET_SAMPLE_NBBYTES];
int i;
XXH3_generateSecret(secretBuffer, customSeed, testData->len);
for (i=0; i<SECRET_SAMPLE_NBBYTES; i++) {
samples[i] = secretBuffer[sampleIndex[i]];
}
if (memcmp(samples, testData->byte, sizeof(testData->byte))) {
XSUM_log("\rError: Secret generation test %i: Internal sanity check failed. \n", nbTests);
XSUM_log("\rGot { 0x%02X, 0x%02X, 0x%02X, 0x%02X }, expected { 0x%02X, 0x%02X, 0x%02X, 0x%02X } \n",
samples[0], samples[1], samples[2], samples[3],
testData->byte[0], testData->byte[1], testData->byte[2], testData->byte[3] );
exit(1);
}
nbTests++;
}
/*!
* XSUM_sanityCheck():
* Runs a sanity check before the benchmark.
*
* Exits on an incorrect output.
*/
XSUM_API void XSUM_sanityCheck(void)
{
size_t i;
#define SANITY_BUFFER_SIZE 2367
XSUM_U8 sanityBuffer[SANITY_BUFFER_SIZE];
const void* const secret = sanityBuffer + 7;
const size_t secretSize = XXH3_SECRET_SIZE_MIN + 11;
assert(sizeof(sanityBuffer) >= 7 + secretSize);
XSUM_fillTestBuffer(sanityBuffer, sizeof(sanityBuffer));
/* XXH32 */
for (i = 0; i < (sizeof(XSUM_XXH32_testdata)/sizeof(XSUM_XXH32_testdata[0])); i++) {
XSUM_testXXH32(sanityBuffer, &XSUM_XXH32_testdata[i]);
}
/* XXH64 */
for (i = 0; i < (sizeof(XSUM_XXH64_testdata)/sizeof(XSUM_XXH64_testdata[0])); i++) {
XSUM_testXXH64(sanityBuffer, &XSUM_XXH64_testdata[i]);
}
/* XXH3_64bits, seeded */
for (i = 0; i < (sizeof(XSUM_XXH3_testdata)/sizeof(XSUM_XXH3_testdata[0])); i++) {
XSUM_testXXH3(sanityBuffer, &XSUM_XXH3_testdata[i]);
}
/* XXH3_64bits, custom secret */
for (i = 0; i < (sizeof(XSUM_XXH3_withSecret_testdata)/sizeof(XSUM_XXH3_withSecret_testdata[0])); i++) {
XSUM_testXXH3_withSecret(sanityBuffer, secret, secretSize, &XSUM_XXH3_withSecret_testdata[i]);
}
/* XXH128 */
for (i = 0; i < (sizeof(XSUM_XXH128_testdata)/sizeof(XSUM_XXH128_testdata[0])); i++) {
XSUM_testXXH128(sanityBuffer, &XSUM_XXH128_testdata[i]);
}
/* XXH128 with custom Secret */
for (i = 0; i < (sizeof(XSUM_XXH128_withSecret_testdata)/sizeof(XSUM_XXH128_withSecret_testdata[0])); i++) {
XSUM_testXXH128_withSecret(sanityBuffer, secret, secretSize, &XSUM_XXH128_withSecret_testdata[i]);
}
/* secret generator */
for (i = 0; i < (sizeof(XSUM_XXH3_generateSecret_testdata)/sizeof(XSUM_XXH3_generateSecret_testdata[0])); i++) {
XSUM_testSecretGenerator(sanityBuffer, &XSUM_XXH3_generateSecret_testdata[i]);
}
XSUM_logVerbose(3, "\r%70s\r", ""); /* Clean display line */
XSUM_logVerbose(3, "Sanity check -- all tests ok\n");
}
#endif /* !XSUM_NO_TESTS */

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/*
* xxhsum - Command line interface for xxhash algorithms
* Copyright (C) 2013-2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
#ifndef XSUM_SANITY_CHECK_H
#define XSUM_SANITY_CHECK_H
#include "xsum_config.h" /* XSUM_API, XSUM_U8 */
#include <stddef.h> /* size_t */
#ifdef __cplusplus
extern "C" {
#endif
/*
* Runs a series of self-tests.
*
* Exits if any of these tests fail, printing a message to stderr.
*
* If XSUM_NO_TESTS is defined to non-zero, this will instead print a warning
* if this is called (e.g. via xxhsum -b).
*/
XSUM_API void XSUM_sanityCheck(void);
/*
* Fills a test buffer with pseudorandom data.
*
* This is used in the sanity check and the benchmarks - its values must not be
* changed.
*/
XSUM_API void XSUM_fillTestBuffer(XSUM_U8* buffer, size_t len);
#ifdef __cplusplus
}
#endif
#endif /* XSUM_SANITY_CHECK_H */

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CFLAGS += -Wall -Wextra -Wundef -g
NM = nm
GREP = grep
# Define *.exe as extension for Windows systems
ifneq (,$(filter Windows%,$(OS)))
EXT =.exe
else
EXT =
endif
ifneq (,$(filter %UTF-8,$(LANG)))
ENABLE_UNICODE ?= 1
else
ENABLE_UNICODE ?= 0
endif
.PHONY: default
default: all
.PHONY: all
all: test
.PHONY: test
test: test_multiInclude test_unicode
.PHONY: test_multiInclude
test_multiInclude:
@$(MAKE) clean
# compile without xxhash.o, ensure symbols exist within target
# Note: built using only default rules
$(MAKE) multiInclude
@$(MAKE) clean
# compile with xxhash.o, to detect duplicated symbols
$(MAKE) multiInclude_withxxhash
@$(MAKE) clean
# Note: XXH_INLINE_ALL with XXH_NAMESPACE is currently disabled
# compile with XXH_NAMESPACE
# CPPFLAGS=-DXXH_NAMESPACE=TESTN_ $(MAKE) multiInclude_withxxhash
# no symbol prefixed TESTN_ should exist
# ! $(NM) multiInclude_withxxhash | $(GREP) TESTN_
#$(MAKE) clean
# compile with XXH_NAMESPACE and without xxhash.o
# CPPFLAGS=-DXXH_NAMESPACE=TESTN_ $(MAKE) multiInclude
# no symbol prefixed TESTN_ should exist
# ! $(NM) multiInclude | $(GREP) TESTN_
#@$(MAKE) clean
.PHONY: test_ppc_redefine
test_ppc_redefine: ppc_define.c
@$(MAKE) clean
$(CC) $(CPPFLAGS) $(CFLAGS) -c $^
xxhsum$(EXT): ../xxhash.c ../xxhash.h ../xxhsum.c
$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -DXXH_INLINE_ALL ../xxhsum.c -o $@
# Make sure that Unicode filenames work.
# https://github.com/Cyan4973/xxHash/issues/293
.PHONY: test_unicode
ifeq (0,$(ENABLE_UNICODE))
test_unicode:
@echo "Skipping Unicode test, your terminal doesn't appear to support UTF-8."
@echo "Try with ENABLE_UNICODE=1"
else
test_unicode: xxhsum$(EXT) generate_unicode_test.c
# Generate a Unicode filename test dynamically
# to keep UTF-8 out of the source tree.
$(CC) $(CFLAGS) $(LDFLAGS) generate_unicode_test.c -o generate_unicode_test$(EXT)
./generate_unicode_test$(EXT)
$(SHELL) ./unicode_test.sh
endif
xxhash.o: ../xxhash.c ../xxhash.h
$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -c -o $@ $<
multiInclude_withxxhash: multiInclude.o xxhash.o
$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $@ $^
clean:
@$(RM) *.o
@$(RM) multiInclude multiInclude_withxxhash
@$(RM) *.unicode generate_unicode_test$(EXT) unicode_test.* xxhsum$(EXT)

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-I../..

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# build artifacts
*.o
benchHash
benchHash32
benchHash_avx2
benchHash_hw
# test files
test*

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
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For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
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Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
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Finally, any free program is threatened constantly by software
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program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
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either verbatim or with modifications and/or translated into another
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the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
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Whether that is true depends on what the Program does.
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You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
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whole or in part contains or is derived from the Program or any
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c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
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announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
a warranty) and that users may redistribute the program under
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License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
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Thus, it is not the intent of this section to claim rights or contest
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In addition, mere aggregation of another work not based on the Program
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under Section 2) in object code or executable form under the terms of
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This section is intended to make thoroughly clear what is believed to
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

67
third_party/xxhash/tests/bench/Makefile vendored
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# ################################################################
# xxHash benchHash Makefile
# Copyright (C) 2019-2020 Yann Collet
#
# GPL v2 License
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# You can contact the author at:
# - xxHash homepage: https://www.xxhash.com
# - xxHash source repository: https://github.com/Cyan4973/xxHash
# ################################################################
# benchHash: A generic benchmark for hash algorithms
# measuring throughput, latency and bandwidth
# ################################################################
CPPFLAGS += -I../.. # directory of xxHash source files
CFLAGS ?= -O3
CFLAGS += -std=c99 -Wall -Wextra -Wstrict-aliasing=1
CFLAGS += $(MOREFLAGS) # custom way to add flags
CXXFLAGS ?= -O3
LDFLAGS += $(MOREFLAGS)
OBJ_LIST = main.o bhDisplay.o benchHash.o benchfn.o timefn.o
default: benchHash
all: benchHash
benchHash32: CFLAGS += -m32
benchHash32: CXXFLAGS += -m32
benchHash_avx2: CFLAGS += -mavx2
benchHash_avx2: CXXFLAGS += -mavx2
benchHash_hw: CPPFLAGS += -DHARDWARE_SUPPORT
benchHash_hw: CFLAGS += -mavx2 -maes
benchHash_hw: CXXFLAGS += -mavx2 -mpclmul -std=c++14
benchHash benchHash32 benchHash_avx2 benchHash_nosimd benchHash_hw: $(OBJ_LIST)
$(CXX) $(CPPFLAGS) $(CXXFLAGS) $^ $(LDFLAGS) -o $@
main.o: bhDisplay.h hashes.h
bhDisplay.o: bhDisplay.h benchHash.h
benchHash.o: benchHash.h
clean:
$(RM) *.o benchHash benchHash32 benchHash_avx2 benchHash_hw

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third_party/xxhash/tests/bench/benchHash.c vendored
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/*
* Hash benchmark module
* Part of the xxHash project
* Copyright (C) 2019-2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
/* benchmark hash functions */
#include <stdlib.h> // malloc
#include <assert.h>
#include "benchHash.h"
static void initBuffer(void* buffer, size_t size)
{
const unsigned long long k1 = 11400714785074694791ULL; /* 0b1001111000110111011110011011000110000101111010111100101010000111 */
const unsigned long long k2 = 14029467366897019727ULL; /* 0b1100001010110010101011100011110100100111110101001110101101001111 */
unsigned long long acc = k2;
unsigned char* const p = (unsigned char*)buffer;
for (size_t s = 0; s < size; s++) {
acc *= k1;
p[s] = (unsigned char)(acc >> 56);
}
}
#define MARGIN_FOR_LATENCY 1024
#define START_MASK (MARGIN_FOR_LATENCY-1)
typedef size_t (*sizeFunction_f)(size_t targetSize);
/*
* bench_hash_internal():
* Benchmarks hashfn repeateadly over single input of size `size`
* return: nb of hashes per second
*/
static double
bench_hash_internal(BMK_benchFn_t hashfn, void* payload,
size_t nbBlocks, sizeFunction_f selectSize, size_t size,
unsigned total_time_ms, unsigned iter_time_ms)
{
BMK_timedFnState_shell shell;
BMK_timedFnState_t* const txf = BMK_initStatic_timedFnState(&shell, sizeof(shell), total_time_ms, iter_time_ms);
assert(txf != NULL);
size_t const srcSize = (size_t)size;
size_t const srcBufferSize = srcSize + MARGIN_FOR_LATENCY;
void* const srcBuffer = malloc(srcBufferSize);
assert(srcBuffer != NULL);
initBuffer(srcBuffer, srcBufferSize);
#define FAKE_DSTSIZE 32
size_t const dstSize = FAKE_DSTSIZE;
char dstBuffer_static[FAKE_DSTSIZE] = {0};
#define NB_BLOCKS_MAX 1024
const void* srcBuffers[NB_BLOCKS_MAX];
size_t srcSizes[NB_BLOCKS_MAX];
void* dstBuffers[NB_BLOCKS_MAX];
size_t dstCapacities[NB_BLOCKS_MAX];
assert(nbBlocks < NB_BLOCKS_MAX);
assert(size > 0);
for (size_t n=0; n < nbBlocks; n++) {
srcBuffers[n] = srcBuffer;
srcSizes[n] = selectSize(size);
dstBuffers[n] = dstBuffer_static;
dstCapacities[n] = dstSize;
}
BMK_benchParams_t params = {
.benchFn = hashfn,
.benchPayload = payload,
.initFn = NULL,
.initPayload = NULL,
.errorFn = NULL,
.blockCount = nbBlocks,
.srcBuffers = srcBuffers,
.srcSizes = srcSizes,
.dstBuffers = dstBuffers,
.dstCapacities = dstCapacities,
.blockResults = NULL
};
BMK_runOutcome_t result;
while (!BMK_isCompleted_TimedFn(txf)) {
result = BMK_benchTimedFn(txf, params);
assert(BMK_isSuccessful_runOutcome(result));
}
BMK_runTime_t const runTime = BMK_extract_runTime(result);
free(srcBuffer);
assert(runTime.nanoSecPerRun != 0);
return (1000000000U / runTime.nanoSecPerRun) * nbBlocks;
}
static size_t rand_1_N(size_t N) { return ((size_t)rand() % N) + 1; }
static size_t identity(size_t s) { return s; }
static size_t
benchLatency(const void* src, size_t srcSize,
void* dst, size_t dstCapacity,
void* customPayload)
{
(void)dst; (void)dstCapacity;
BMK_benchFn_t benchfn = (BMK_benchFn_t)customPayload;
static size_t hash = 0;
const void* const start = (const char*)src + (hash & START_MASK);
return hash = benchfn(start, srcSize, dst, dstCapacity, NULL);
}
#ifndef SIZE_TO_HASH_PER_ROUND
# define SIZE_TO_HASH_PER_ROUND 200000
#endif
#ifndef NB_HASH_ROUNDS_MAX
# define NB_HASH_ROUNDS_MAX 1000
#endif
double bench_hash(BMK_benchFn_t hashfn,
BMK_benchMode benchMode,
size_t size, BMK_sizeMode sizeMode,
unsigned total_time_ms, unsigned iter_time_ms)
{
sizeFunction_f const sizef = (sizeMode == BMK_fixedSize) ? identity : rand_1_N;
BMK_benchFn_t const benchfn = (benchMode == BMK_throughput) ? hashfn : benchLatency;
BMK_benchFn_t const payload = (benchMode == BMK_throughput) ? NULL : hashfn;
size_t nbBlocks = (SIZE_TO_HASH_PER_ROUND / size) + 1;
if (nbBlocks > NB_HASH_ROUNDS_MAX) nbBlocks = NB_HASH_ROUNDS_MAX;
return bench_hash_internal(benchfn, payload,
nbBlocks, sizef, size,
total_time_ms, iter_time_ms);
}

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third_party/xxhash/tests/bench/benchHash.h vendored
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/*
* Hash benchmark module
* Part of the xxHash project
* Copyright (C) 2019-2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
#ifndef BENCH_HASH_H_983426678
#define BENCH_HASH_H_983426678
#if defined (__cplusplus)
extern "C" {
#endif
/* === Dependencies === */
#include "benchfn.h" /* BMK_benchFn_t */
/* === Declarations === */
typedef enum { BMK_throughput, BMK_latency } BMK_benchMode;
typedef enum { BMK_fixedSize, /* hash always `size` bytes */
BMK_randomSize, /* hash a random nb of bytes, between 1 and `size` (inclusive) */
} BMK_sizeMode;
/*
* bench_hash():
* Returns speed expressed as nb hashes per second.
* total_time_ms: time spent benchmarking the hash function with given parameters
* iter_time_ms: time spent for one round. If multiple rounds are run,
* bench_hash() will report the speed of best round.
*/
double bench_hash(BMK_benchFn_t hashfn,
BMK_benchMode benchMode,
size_t size, BMK_sizeMode sizeMode,
unsigned total_time_ms, unsigned iter_time_ms);
#if defined (__cplusplus)
}
#endif
#endif /* BENCH_HASH_H_983426678 */

252
third_party/xxhash/tests/bench/benchfn.c vendored
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/*
* Copyright (C) 2016-2020 Yann Collet, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
/* *************************************
* Includes
***************************************/
#include <stdlib.h> /* malloc, free */
#include <string.h> /* memset */
#undef NDEBUG /* assert must not be disabled */
#include <assert.h> /* assert */
#include "timefn.h" /* UTIL_time_t, UTIL_getTime */
#include "benchfn.h"
/* *************************************
* Constants
***************************************/
#define TIMELOOP_MICROSEC SEC_TO_MICRO /* 1 second */
#define TIMELOOP_NANOSEC (1*1000000000ULL) /* 1 second */
#define KB *(1 <<10)
#define MB *(1 <<20)
#define GB *(1U<<30)
/* *************************************
* Debug errors
***************************************/
#if defined(DEBUG) && (DEBUG >= 1)
# include <stdio.h> /* fprintf */
# define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
# define DEBUGOUTPUT(...) { if (DEBUG) DISPLAY(__VA_ARGS__); }
#else
# define DEBUGOUTPUT(...)
#endif
/* error without displaying */
#define RETURN_QUIET_ERROR(retValue, ...) { \
DEBUGOUTPUT("%s: %i: \n", __FILE__, __LINE__); \
DEBUGOUTPUT("Error : "); \
DEBUGOUTPUT(__VA_ARGS__); \
DEBUGOUTPUT(" \n"); \
return retValue; \
}
/* *************************************
* Benchmarking an arbitrary function
***************************************/
int BMK_isSuccessful_runOutcome(BMK_runOutcome_t outcome)
{
return outcome.error_tag_never_ever_use_directly == 0;
}
/* warning : this function will stop program execution if outcome is invalid !
* check outcome validity first, using BMK_isValid_runResult() */
BMK_runTime_t BMK_extract_runTime(BMK_runOutcome_t outcome)
{
assert(outcome.error_tag_never_ever_use_directly == 0);
return outcome.internal_never_ever_use_directly;
}
size_t BMK_extract_errorResult(BMK_runOutcome_t outcome)
{
assert(outcome.error_tag_never_ever_use_directly != 0);
return outcome.error_result_never_ever_use_directly;
}
static BMK_runOutcome_t BMK_runOutcome_error(size_t errorResult)
{
BMK_runOutcome_t b;
memset(&b, 0, sizeof(b));
b.error_tag_never_ever_use_directly = 1;
b.error_result_never_ever_use_directly = errorResult;
return b;
}
static BMK_runOutcome_t BMK_setValid_runTime(BMK_runTime_t runTime)
{
BMK_runOutcome_t outcome;
outcome.error_tag_never_ever_use_directly = 0;
outcome.internal_never_ever_use_directly = runTime;
return outcome;
}
/* initFn will be measured once, benchFn will be measured `nbLoops` times */
/* initFn is optional, provide NULL if none */
/* benchFn must return a size_t value that errorFn can interpret */
/* takes # of blocks and list of size & stuff for each. */
/* can report result of benchFn for each block into blockResult. */
/* blockResult is optional, provide NULL if this information is not required */
/* note : time per loop can be reported as zero if run time < timer resolution */
BMK_runOutcome_t BMK_benchFunction(BMK_benchParams_t p,
unsigned nbLoops)
{
/* init */
{ size_t i;
for (i = 0; i < p.blockCount; i++) {
memset(p.dstBuffers[i], 0xE5, p.dstCapacities[i]); /* warm up and erase result buffer */
} }
/* benchmark */
{ UTIL_time_t const clockStart = UTIL_getTime();
size_t dstSize = 0;
unsigned loopNb, blockNb;
nbLoops += !nbLoops; /* minimum nbLoops is 1 */
if (p.initFn != NULL) p.initFn(p.initPayload);
for (loopNb = 0; loopNb < nbLoops; loopNb++) {
for (blockNb = 0; blockNb < p.blockCount; blockNb++) {
size_t const res = p.benchFn(p.srcBuffers[blockNb], p.srcSizes[blockNb],
p.dstBuffers[blockNb], p.dstCapacities[blockNb],
p.benchPayload);
if (loopNb == 0) {
if (p.blockResults != NULL) p.blockResults[blockNb] = res;
if ((p.errorFn != NULL) && (p.errorFn(res))) {
RETURN_QUIET_ERROR(BMK_runOutcome_error(res),
"Function benchmark failed on block %u (of size %u) with error %i",
blockNb, (unsigned)p.srcSizes[blockNb], (int)res);
}
dstSize += res;
} }
} /* for (loopNb = 0; loopNb < nbLoops; loopNb++) */
{ PTime const totalTime = UTIL_clockSpanNano(clockStart);
BMK_runTime_t rt;
rt.nanoSecPerRun = (double)totalTime / nbLoops;
rt.sumOfReturn = dstSize;
return BMK_setValid_runTime(rt);
} }
}
/* ==== Benchmarking any function, providing intermediate results ==== */
struct BMK_timedFnState_s {
PTime timeSpent_ns;
PTime timeBudget_ns;
PTime runBudget_ns;
BMK_runTime_t fastestRun;
unsigned nbLoops;
UTIL_time_t coolTime;
}; /* typedef'd to BMK_timedFnState_t within bench.h */
BMK_timedFnState_t* BMK_createTimedFnState(unsigned total_ms, unsigned run_ms)
{
BMK_timedFnState_t* const r = (BMK_timedFnState_t*)malloc(sizeof(*r));
if (r == NULL) return NULL; /* malloc() error */
BMK_resetTimedFnState(r, total_ms, run_ms);
return r;
}
void BMK_freeTimedFnState(BMK_timedFnState_t* state) { free(state); }
BMK_timedFnState_t*
BMK_initStatic_timedFnState(void* buffer, size_t size, unsigned total_ms, unsigned run_ms)
{
typedef char check_size[ 2 * (sizeof(BMK_timedFnState_shell) >= sizeof(struct BMK_timedFnState_s)) - 1]; /* static assert : a compilation failure indicates that BMK_timedFnState_shell is not large enough */
typedef struct { check_size c; BMK_timedFnState_t tfs; } tfs_align; /* force tfs to be aligned at its next best position */
size_t const tfs_alignment = offsetof(tfs_align, tfs); /* provides the minimal alignment restriction for BMK_timedFnState_t */
BMK_timedFnState_t* const r = (BMK_timedFnState_t*)buffer;
if (buffer == NULL) return NULL;
if (size < sizeof(struct BMK_timedFnState_s)) return NULL;
if ((size_t)buffer % tfs_alignment) return NULL; /* buffer must be properly aligned */
BMK_resetTimedFnState(r, total_ms, run_ms);
return r;
}
void BMK_resetTimedFnState(BMK_timedFnState_t* timedFnState, unsigned total_ms, unsigned run_ms)
{
if (!total_ms) total_ms = 1 ;
if (!run_ms) run_ms = 1;
if (run_ms > total_ms) run_ms = total_ms;
timedFnState->timeSpent_ns = 0;
timedFnState->timeBudget_ns = (PTime)total_ms * TIMELOOP_NANOSEC / 1000;
timedFnState->runBudget_ns = (PTime)run_ms * TIMELOOP_NANOSEC / 1000;
timedFnState->fastestRun.nanoSecPerRun = (double)TIMELOOP_NANOSEC * 2000000000; /* hopefully large enough : must be larger than any potential measurement */
timedFnState->fastestRun.sumOfReturn = (size_t)(-1LL);
timedFnState->nbLoops = 1;
timedFnState->coolTime = UTIL_getTime();
}
/* Tells if nb of seconds set in timedFnState for all runs is spent.
* note : this function will return 1 if BMK_benchFunctionTimed() has actually errored. */
int BMK_isCompleted_TimedFn(const BMK_timedFnState_t* timedFnState)
{
return (timedFnState->timeSpent_ns >= timedFnState->timeBudget_ns);
}
#undef MIN
#define MIN(a,b) ( (a) < (b) ? (a) : (b) )
#define MINUSABLETIME (TIMELOOP_NANOSEC / 2) /* 0.5 seconds */
BMK_runOutcome_t BMK_benchTimedFn(BMK_timedFnState_t* cont,
BMK_benchParams_t p)
{
PTime const runBudget_ns = cont->runBudget_ns;
PTime const runTimeMin_ns = runBudget_ns / 2;
BMK_runTime_t bestRunTime = cont->fastestRun;
for (;;) {
BMK_runOutcome_t const runResult = BMK_benchFunction(p, cont->nbLoops);
if (!BMK_isSuccessful_runOutcome(runResult)) { /* error : move out */
return runResult;
}
{ BMK_runTime_t const newRunTime = BMK_extract_runTime(runResult);
double const loopDuration_ns = newRunTime.nanoSecPerRun * cont->nbLoops;
cont->timeSpent_ns += (unsigned long long)loopDuration_ns;
/* estimate nbLoops for next run to last approximately 1 second */
if (loopDuration_ns > (runBudget_ns / 50)) {
double const fastestRun_ns = MIN(bestRunTime.nanoSecPerRun, newRunTime.nanoSecPerRun);
cont->nbLoops = (unsigned)(runBudget_ns / fastestRun_ns) + 1;
} else {
/* previous run was too short : blindly increase workload by x multiplier */
const unsigned multiplier = 10;
assert(cont->nbLoops < ((unsigned)-1) / multiplier); /* avoid overflow */
cont->nbLoops *= multiplier;
}
if (loopDuration_ns < runTimeMin_ns) {
/* When benchmark run time is too small : don't report results.
* increased risks of rounding errors */
continue;
}
if (newRunTime.nanoSecPerRun < bestRunTime.nanoSecPerRun) {
bestRunTime = newRunTime;
}
}
break;
} /* while (!completed) */
return BMK_setValid_runTime(bestRunTime);
}

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/*
* Copyright (C) 2016-2020 Yann Collet, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
/* benchfn :
* benchmark any function on a set of input
* providing result in nanoSecPerRun
* or detecting and returning an error
*/
#if defined (__cplusplus)
extern "C" {
#endif
#ifndef BENCH_FN_H_23876
#define BENCH_FN_H_23876
/* === Dependencies === */
#include <stddef.h> /* size_t */
/* ==== Benchmark any function, iterated on a set of blocks ==== */
/* BMK_runTime_t: valid result return type */
typedef struct {
double nanoSecPerRun; /* time per iteration (over all blocks) */
size_t sumOfReturn; /* sum of return values */
} BMK_runTime_t;
/* BMK_runOutcome_t:
* type expressing the outcome of a benchmark run by BMK_benchFunction(),
* which can be either valid or invalid.
* benchmark outcome can be invalid if errorFn is provided.
* BMK_runOutcome_t must be considered "opaque" : never access its members directly.
* Instead, use its assigned methods :
* BMK_isSuccessful_runOutcome, BMK_extract_runTime, BMK_extract_errorResult.
* The structure is only described here to allow its allocation on stack. */
typedef struct {
BMK_runTime_t internal_never_ever_use_directly;
size_t error_result_never_ever_use_directly;
int error_tag_never_ever_use_directly;
} BMK_runOutcome_t;
/* prototypes for benchmarked functions */
typedef size_t (*BMK_benchFn_t)(const void* src, size_t srcSize, void* dst, size_t dstCapacity, void* customPayload);
typedef size_t (*BMK_initFn_t)(void* initPayload);
typedef unsigned (*BMK_errorFn_t)(size_t);
/* BMK_benchFunction() parameters are provided via the following structure.
* A structure is preferable for readability,
* as the number of parameters required is fairly large.
* No initializer is provided, because it doesn't make sense to provide some "default" :
* all parameters must be specified by the caller.
* optional parameters are labelled explicitly, and accept value NULL when not used */
typedef struct {
BMK_benchFn_t benchFn; /* the function to benchmark, over the set of blocks */
void* benchPayload; /* pass custom parameters to benchFn :
* (*benchFn)(srcBuffers[i], srcSizes[i], dstBuffers[i], dstCapacities[i], benchPayload) */
BMK_initFn_t initFn; /* (*initFn)(initPayload) is run once per run, at the beginning. */
void* initPayload; /* Both arguments can be NULL, in which case nothing is run. */
BMK_errorFn_t errorFn; /* errorFn will check each return value of benchFn over each block, to determine if it failed or not.
* errorFn can be NULL, in which case no check is performed.
* errorFn must return 0 when benchFn was successful, and >= 1 if it detects an error.
* Execution is stopped as soon as an error is detected.
* the triggering return value can be retrieved using BMK_extract_errorResult(). */
size_t blockCount; /* number of blocks to operate benchFn on.
* It's also the size of all array parameters :
* srcBuffers, srcSizes, dstBuffers, dstCapacities, blockResults */
const void *const * srcBuffers; /* read-only array of buffers to be operated on by benchFn */
const size_t* srcSizes; /* read-only array containing sizes of srcBuffers */
void *const * dstBuffers; /* array of buffers to be written into by benchFn. This array is not optional, it must be provided even if unused by benchfn. */
const size_t* dstCapacities; /* read-only array containing capacities of dstBuffers. This array must be present. */
size_t* blockResults; /* Optional: store the return value of benchFn for each block. Use NULL if this result is not requested. */
} BMK_benchParams_t;
/* BMK_benchFunction() :
* This function benchmarks benchFn and initFn, providing a result.
*
* params : see description of BMK_benchParams_t above.
* nbLoops: defines number of times benchFn is run over the full set of blocks.
* Minimum value is 1. A 0 is interpreted as a 1.
*
* @return: can express either an error or a successful result.
* Use BMK_isSuccessful_runOutcome() to check if benchmark was successful.
* If yes, extract the result with BMK_extract_runTime(),
* it will contain :
* .sumOfReturn : the sum of all return values of benchFn through all of blocks
* .nanoSecPerRun : time per run of benchFn + (time for initFn / nbLoops)
* .sumOfReturn is generally intended for functions which return a # of bytes written into dstBuffer,
* in which case, this value will be the total amount of bytes written into dstBuffer.
*
* blockResults : when provided (!= NULL), and when benchmark is successful,
* params.blockResults contains all return values of `benchFn` over all blocks.
* when provided (!= NULL), and when benchmark failed,
* params.blockResults contains return values of `benchFn` over all blocks preceding and including the failed block.
*/
BMK_runOutcome_t BMK_benchFunction(BMK_benchParams_t params, unsigned nbLoops);
/* check first if the benchmark was successful or not */
int BMK_isSuccessful_runOutcome(BMK_runOutcome_t outcome);
/* If the benchmark was successful, extract the result.
* note : this function will abort() program execution if benchmark failed !
* always check if benchmark was successful first !
*/
BMK_runTime_t BMK_extract_runTime(BMK_runOutcome_t outcome);
/* when benchmark failed, it means one invocation of `benchFn` failed.
* The failure was detected by `errorFn`, operating on return values of `benchFn`.
* Returns the faulty return value.
* note : this function will abort() program execution if benchmark did not failed.
* always check if benchmark failed first !
*/
size_t BMK_extract_errorResult(BMK_runOutcome_t outcome);
/* ==== Benchmark any function, returning intermediate results ==== */
/* state information tracking benchmark session */
typedef struct BMK_timedFnState_s BMK_timedFnState_t;
/* BMK_benchTimedFn() :
* Similar to BMK_benchFunction(), most arguments being identical.
* Automatically determines `nbLoops` so that each result is regularly produced at interval of about run_ms.
* Note : minimum `nbLoops` is 1, therefore a run may last more than run_ms, and possibly even more than total_ms.
* Usage - initialize timedFnState, select benchmark duration (total_ms) and each measurement duration (run_ms)
* call BMK_benchTimedFn() repetitively, each measurement is supposed to last about run_ms
* Check if total time budget is spent or exceeded, using BMK_isCompleted_TimedFn()
*/
BMK_runOutcome_t BMK_benchTimedFn(BMK_timedFnState_t* timedFnState,
BMK_benchParams_t params);
/* Tells if duration of all benchmark runs has exceeded total_ms
*/
int BMK_isCompleted_TimedFn(const BMK_timedFnState_t* timedFnState);
/* BMK_createTimedFnState() and BMK_resetTimedFnState() :
* Create/Set BMK_timedFnState_t for next benchmark session,
* which shall last a minimum of total_ms milliseconds,
* producing intermediate results, paced at interval of (approximately) run_ms.
*/
BMK_timedFnState_t* BMK_createTimedFnState(unsigned total_ms, unsigned run_ms);
void BMK_resetTimedFnState(BMK_timedFnState_t* timedFnState, unsigned total_ms, unsigned run_ms);
void BMK_freeTimedFnState(BMK_timedFnState_t* state);
/* BMK_timedFnState_shell and BMK_initStatic_timedFnState() :
* Makes it possible to statically allocate a BMK_timedFnState_t on stack.
* BMK_timedFnState_shell is only there to allocate space,
* never ever access its members.
* BMK_timedFnState_t() actually accepts any buffer.
* It will check if provided buffer is large enough and is correctly aligned,
* and will return NULL if conditions are not respected.
*/
#define BMK_TIMEDFNSTATE_SIZE 64
typedef union {
char never_access_space[BMK_TIMEDFNSTATE_SIZE];
long long alignment_enforcer; /* must be aligned on 8-bytes boundaries */
} BMK_timedFnState_shell;
BMK_timedFnState_t* BMK_initStatic_timedFnState(void* buffer, size_t size, unsigned total_ms, unsigned run_ms);
#endif /* BENCH_FN_H_23876 */
#if defined (__cplusplus)
}
#endif

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/*
* CSV Display module for the hash benchmark program
* Part of the xxHash project
* Copyright (C) 2019-2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at :
* - xxHash homepage : https://www.xxhash.com
* - xxHash source repository : https://github.com/Cyan4973/xxHash
*/
/* === Dependencies === */
#include <stdlib.h> /* rand */
#include <stdio.h> /* printf */
#include <assert.h>
#include "benchHash.h"
#include "bhDisplay.h"
/* === benchmark large input === */
#define MB_UNIT 1000000
#define BENCH_LARGE_ITER_MS 490
#define BENCH_LARGE_TOTAL_MS 1010
static void bench_oneHash_largeInput(Bench_Entry hashDesc, int minlog, int maxlog)
{
printf("%-7s", hashDesc.name);
for (int sizelog=minlog; sizelog<=maxlog; sizelog++) {
size_t const inputSize = (size_t)1 << sizelog;
double const nbhps = bench_hash(hashDesc.hash, BMK_throughput,
inputSize, BMK_fixedSize,
BENCH_LARGE_TOTAL_MS, BENCH_LARGE_ITER_MS);
printf(",%6.0f", nbhps * inputSize / MB_UNIT); fflush(NULL);
}
printf("\n");
}
void bench_largeInput(Bench_Entry const* hashDescTable, int nbHashes, int minlog, int maxlog)
{
assert(maxlog < 31);
assert(minlog >= 0);
printf("benchmarking large inputs : from %u bytes (log%i) to %u MB (log%i) \n",
1U << minlog, minlog,
(1U << maxlog) >> 20, maxlog);
for (int i=0; i<nbHashes; i++)
bench_oneHash_largeInput(hashDescTable[i], minlog, maxlog);
}
/* === Benchmark small inputs === */
#define BENCH_SMALL_ITER_MS 170
#define BENCH_SMALL_TOTAL_MS 490
static void bench_throughput_oneHash_smallInputs(Bench_Entry hashDesc, size_t sizeMin, size_t sizeMax)
{
printf("%-7s", hashDesc.name);
for (size_t s=sizeMin; s<sizeMax+1; s++) {
double const nbhps = bench_hash(hashDesc.hash, BMK_throughput,
s, BMK_fixedSize,
BENCH_SMALL_TOTAL_MS, BENCH_SMALL_ITER_MS);
printf(",%10.0f", nbhps); fflush(NULL);
}
printf("\n");
}
void bench_throughput_smallInputs(Bench_Entry const* hashDescTable, int nbHashes, size_t sizeMin, size_t sizeMax)
{
printf("Throughput small inputs of fixed size (from %zu to %zu bytes): \n",
sizeMin, sizeMax);
for (int i=0; i<nbHashes; i++)
bench_throughput_oneHash_smallInputs(hashDescTable[i], sizeMin, sizeMax);
}
/* === Latency measurements (small keys) === */
static void bench_latency_oneHash_smallInputs(Bench_Entry hashDesc, size_t size_min, size_t size_max)
{
printf("%-7s", hashDesc.name);
for (size_t s=size_min; s<size_max+1; s++) {
double const nbhps = bench_hash(hashDesc.hash, BMK_latency,
s, BMK_fixedSize,
BENCH_SMALL_TOTAL_MS, BENCH_SMALL_ITER_MS);
printf(",%10.0f", nbhps); fflush(NULL);
}
printf("\n");
}
void bench_latency_smallInputs(Bench_Entry const* hashDescTable, int nbHashes, size_t size_min, size_t size_max)
{
printf("Latency for small inputs of fixed size : \n");
for (int i=0; i<nbHashes; i++)
bench_latency_oneHash_smallInputs(hashDescTable[i], size_min, size_max);
}
/* === Random input Length === */
static void bench_randomInputLength_withOneHash(Bench_Entry hashDesc, size_t size_min, size_t size_max)
{
printf("%-7s", hashDesc.name);
for (size_t s=size_min; s<size_max+1; s++) {
srand((unsigned)s); /* ensure random sequence of length will be the same for a given s */
double const nbhps = bench_hash(hashDesc.hash, BMK_throughput,
s, BMK_randomSize,
BENCH_SMALL_TOTAL_MS, BENCH_SMALL_ITER_MS);
printf(",%10.0f", nbhps); fflush(NULL);
}
printf("\n");
}
void bench_throughput_randomInputLength(Bench_Entry const* hashDescTable, int nbHashes, size_t size_min, size_t size_max)
{
printf("benchmarking random size inputs [1-N] : \n");
for (int i=0; i<nbHashes; i++)
bench_randomInputLength_withOneHash(hashDescTable[i], size_min, size_max);
}
/* === Latency with Random input Length === */
static void bench_latency_oneHash_randomInputLength(Bench_Entry hashDesc, size_t size_min, size_t size_max)
{
printf("%-7s", hashDesc.name);
for (size_t s=size_min; s<size_max+1; s++) {
srand((unsigned)s); /* ensure random sequence of length will be the same for a given s */
double const nbhps = bench_hash(hashDesc.hash, BMK_latency,
s, BMK_randomSize,
BENCH_SMALL_TOTAL_MS, BENCH_SMALL_ITER_MS);
printf(",%10.0f", nbhps); fflush(NULL);
}
printf("\n");
}
void bench_latency_randomInputLength(Bench_Entry const* hashDescTable, int nbHashes, size_t size_min, size_t size_max)
{
printf("Latency for small inputs of random size [1-N] : \n");
for (int i=0; i<nbHashes; i++)
bench_latency_oneHash_randomInputLength(hashDescTable[i], size_min, size_max);
}

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/*
* CSV Display module for the hash benchmark program
* Part of the xxHash project
* Copyright (C) 2019-2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
#ifndef BH_DISPLAY_H_192088098
#define BH_DISPLAY_H_192088098
#if defined (__cplusplus)
extern "C" {
#endif
/* === Dependencies === */
#include "benchfn.h" /* BMK_benchFn_t */
/* === Declarations === */
typedef struct {
const char* name;
BMK_benchFn_t hash;
} Bench_Entry;
void bench_largeInput(Bench_Entry const* hashDescTable, int nbHashes, int sizeLogMin, int sizeLogMax);
void bench_throughput_smallInputs(Bench_Entry const* hashDescTable, int nbHashes, size_t sizeMin, size_t sizeMax);
void bench_throughput_randomInputLength(Bench_Entry const* hashDescTable, int nbHashes, size_t sizeMin, size_t sizeMax);
void bench_latency_smallInputs(Bench_Entry const* hashDescTable, int nbHashes, size_t sizeMin, size_t sizeMax);
void bench_latency_randomInputLength(Bench_Entry const* hashDescTable, int nbHashes, size_t sizeMin, size_t sizeMax);
#if defined (__cplusplus)
}
#endif
#endif /* BH_DISPLAY_H_192088098 */

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/*
* List hash algorithms to benchmark
* Part of xxHash project
* Copyright (C) 2019-2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
/* === Dependencies === */
#include <stddef.h> /* size_t */
/* ==================================================
* Non-portable hash algorithms
* =============================================== */
#ifdef HARDWARE_SUPPORT
/*
* List any hash algorithms that depend on specific hardware support,
* including for example:
* - Hardware crc32c
* - Hardware AES support
* - Carryless Multipliers (clmul)
* - AVX2
*/
#endif
/* ==================================================
* List of hashes
* ==================================================
* Each hash must be wrapped in a thin redirector conformant with the BMK_benchfn_t.
* BMK_benchfn_t is generic, not specifically designed for hashes.
* For hashes, the following parameters are expected to be useless:
* dst, dstCapacity, customPayload.
*
* The result of each hash is assumed to be provided as function return value.
* This condition is important for latency measurements.
*/
/* === xxHash === */
#define XXH_INLINE_ALL
#include "xxhash.h"
size_t XXH32_wrapper(const void* src, size_t srcSize, void* dst, size_t dstCapacity, void* customPayload)
{
(void)dst; (void)dstCapacity; (void)customPayload;
return (size_t) XXH32(src, srcSize, 0);
}
size_t XXH64_wrapper(const void* src, size_t srcSize, void* dst, size_t dstCapacity, void* customPayload)
{
(void)dst; (void)dstCapacity; (void)customPayload;
return (size_t) XXH64(src, srcSize, 0);
}
size_t xxh3_wrapper(const void* src, size_t srcSize, void* dst, size_t dstCapacity, void* customPayload)
{
(void)dst; (void)dstCapacity; (void)customPayload;
return (size_t) XXH3_64bits(src, srcSize);
}
size_t XXH128_wrapper(const void* src, size_t srcSize, void* dst, size_t dstCapacity, void* customPayload)
{
(void)dst; (void)dstCapacity; (void)customPayload;
return (size_t) XXH3_128bits(src, srcSize).low64;
}
/* ==================================================
* Table of hashes
* =============================================== */
#include "bhDisplay.h" /* Bench_Entry */
#ifndef HARDWARE_SUPPORT
# define NB_HASHES 4
#else
# define NB_HASHES 4
#endif
Bench_Entry const hashCandidates[NB_HASHES] = {
{ "xxh3" , xxh3_wrapper },
{ "XXH32" , XXH32_wrapper },
{ "XXH64" , XXH64_wrapper },
{ "XXH128", XXH128_wrapper },
#ifdef HARDWARE_SUPPORT
/* list here codecs which require specific hardware support, such SSE4.1, PCLMUL, AVX2, etc. */
#endif
};

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/*
* Main program to benchmark hash functions
* Part of the xxHash project
* Copyright (C) 2019-2020 Yann Collet
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
/* === dependencies === */
#include <stdio.h> /* printf */
#include <limits.h> /* INT_MAX */
#include "bhDisplay.h" /* bench_x */
/* === defines list of hashes `hashCandidates` and NB_HASHES *** */
#include "hashes.h"
/* === parse command line === */
#undef NDEBUG
#include <assert.h>
/*!
* readIntFromChar():
* Allows and interprets K, KB, KiB, M, MB and MiB suffix.
* Will also modify `*stringPtr`, advancing it to position where it stopped reading.
*/
static int readIntFromChar(const char** stringPtr)
{
static int const max = (INT_MAX / 10) - 1;
int result = 0;
while ((**stringPtr >='0') && (**stringPtr <='9')) {
assert(result < max);
result *= 10;
result += (unsigned)(**stringPtr - '0');
(*stringPtr)++ ;
}
if ((**stringPtr=='K') || (**stringPtr=='M')) {
int const maxK = INT_MAX >> 10;
assert(result < maxK);
result <<= 10;
if (**stringPtr=='M') {
assert(result < maxK);
result <<= 10;
}
(*stringPtr)++; /* skip `K` or `M` */
if (**stringPtr=='i') (*stringPtr)++;
if (**stringPtr=='B') (*stringPtr)++;
}
return result;
}
/**
* isCommand():
* Checks if string is the same as longCommand.
* If yes, @return 1, otherwise @return 0
*/
static int isCommand(const char* string, const char* longCommand)
{
assert(string);
assert(longCommand);
size_t const comSize = strlen(longCommand);
return !strncmp(string, longCommand, comSize);
}
/*
* longCommandWArg():
* Checks if *stringPtr is the same as longCommand.
* If yes, @return 1 and advances *stringPtr to the position which immediately
* follows longCommand.
* @return 0 and doesn't modify *stringPtr otherwise.
*/
static int longCommandWArg(const char** stringPtr, const char* longCommand)
{
assert(stringPtr);
assert(longCommand);
size_t const comSize = strlen(longCommand);
int const result = isCommand(*stringPtr, longCommand);
if (result) *stringPtr += comSize;
return result;
}
/* === default values - can be redefined at compilation time === */
#ifndef SMALL_SIZE_MIN_DEFAULT
# define SMALL_SIZE_MIN_DEFAULT 1
#endif
#ifndef SMALL_SIZE_MAX_DEFAULT
# define SMALL_SIZE_MAX_DEFAULT 127
#endif
#ifndef LARGE_SIZELOG_MIN_DEFAULT
# define LARGE_SIZELOG_MIN_DEFAULT 9
#endif
#ifndef LARGE_SIZELOG_MAX_DEFAULT
# define LARGE_SIZELOG_MAX_DEFAULT 27
#endif
static int display_hash_names(void)
{
int i;
printf("available hashes : \n");
for (i=0; i<NB_HASHES; i++) {
printf("%s, ", hashCandidates[i].name);
}
printf("\b\b \n");
return 0;
}
/*
* @return: hashID (necessarily between 0 and NB_HASHES) if present
* -1 on error (hname not present)
*/
static int hashID(const char* hname)
{
int id;
assert(hname);
for (id=0; id < NB_HASHES; id++) {
assert(hashCandidates[id].name);
if (strlen(hname) != strlen(hashCandidates[id].name)) continue;
if (isCommand(hname, hashCandidates[id].name)) return id;
}
return -1;
}
static int help(const char* exename)
{
printf("Usage: %s [options]... [hash]\n", exename);
printf("Runs various benchmarks at various lengths for the listed hash functions\n");
printf("and outputs them in a CSV format.\n\n");
printf("Options: \n");
printf(" --list Name available hash algorithms and exit \n");
printf(" --mins=LEN Starting length for small size bench (default: %i) \n", SMALL_SIZE_MIN_DEFAULT);
printf(" --maxs=LEN End length for small size bench (default: %i) \n", SMALL_SIZE_MAX_DEFAULT);
printf(" --minl=LEN Starting log2(length) for large size bench (default: %i) \n", LARGE_SIZELOG_MIN_DEFAULT);
printf(" --maxl=LEN End log2(length) for large size bench (default: %i) \n", LARGE_SIZELOG_MAX_DEFAULT);
printf(" [hash] Optional, bench all available hashes if not provided \n");
return 0;
}
static int badusage(const char* exename)
{
printf("Bad command ... \n");
help(exename);
return 1;
}
int main(int argc, const char* argv[])
{
const char* const exename = argv[0];
int hashNb = 0;
int nb_h_test = NB_HASHES;
int largeTest_log_min = LARGE_SIZELOG_MIN_DEFAULT;
int largeTest_log_max = LARGE_SIZELOG_MAX_DEFAULT;
size_t smallTest_size_min = SMALL_SIZE_MIN_DEFAULT;
size_t smallTest_size_max = SMALL_SIZE_MAX_DEFAULT;
int arg_nb;
for (arg_nb = 1; arg_nb < argc; arg_nb++) {
const char** arg = argv + arg_nb;
if (isCommand(*arg, "-h")) { assert(argc >= 1); return help(exename); }
if (isCommand(*arg, "--list")) { return display_hash_names(); }
if (longCommandWArg(arg, "--n=")) { nb_h_test = readIntFromChar(arg); continue; } /* hidden command */
if (longCommandWArg(arg, "--minl=")) { largeTest_log_min = readIntFromChar(arg); continue; }
if (longCommandWArg(arg, "--maxl=")) { largeTest_log_max = readIntFromChar(arg); continue; }
if (longCommandWArg(arg, "--mins=")) { smallTest_size_min = (size_t)readIntFromChar(arg); continue; }
if (longCommandWArg(arg, "--maxs=")) { smallTest_size_max = (size_t)readIntFromChar(arg); continue; }
/* not a command: must be a hash name */
hashNb = hashID(*arg);
if (hashNb >= 0) {
nb_h_test = 1;
} else {
/* not a hash name: error */
return badusage(exename);
}
}
/* border case (requires (mis)using hidden command `--n=#`) */
if (hashNb + nb_h_test > NB_HASHES) {
printf("wrong hash selection \n");
return 1;
}
printf(" === benchmarking %i hash functions === \n", nb_h_test);
if (largeTest_log_max >= largeTest_log_min) {
bench_largeInput(hashCandidates+hashNb, nb_h_test, largeTest_log_min, largeTest_log_max);
}
if (smallTest_size_max >= smallTest_size_min) {
bench_throughput_smallInputs(hashCandidates+hashNb, nb_h_test, smallTest_size_min, smallTest_size_max);
bench_throughput_randomInputLength(hashCandidates+hashNb, nb_h_test, smallTest_size_min, smallTest_size_max);
bench_latency_smallInputs(hashCandidates+hashNb, nb_h_test, smallTest_size_min, smallTest_size_max);
bench_latency_randomInputLength(hashCandidates+hashNb, nb_h_test, smallTest_size_min, smallTest_size_max);
}
return 0;
}

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third_party/xxhash/tests/bench/timefn.c vendored
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/*
* Copyright (C) 2019-2020 Yann Collet, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
/* === Dependencies === */
#include "timefn.h"
/*-****************************************
* Time functions
******************************************/
#if defined(_WIN32) /* Windows */
#include <stdlib.h> /* abort */
#include <stdio.h> /* perror */
UTIL_time_t UTIL_getTime(void) { UTIL_time_t x; QueryPerformanceCounter(&x); return x; }
PTime UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd)
{
static LARGE_INTEGER ticksPerSecond;
static int init = 0;
if (!init) {
if (!QueryPerformanceFrequency(&ticksPerSecond)) {
perror("timefn::QueryPerformanceFrequency");
abort();
}
init = 1;
}
return 1000000ULL*(clockEnd.QuadPart - clockStart.QuadPart)/ticksPerSecond.QuadPart;
}
PTime UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd)
{
static LARGE_INTEGER ticksPerSecond;
static int init = 0;
if (!init) {
if (!QueryPerformanceFrequency(&ticksPerSecond)) {
perror("timefn::QueryPerformanceFrequency");
abort();
}
init = 1;
}
return 1000000000ULL*(clockEnd.QuadPart - clockStart.QuadPart)/ticksPerSecond.QuadPart;
}
#elif defined(__APPLE__) && defined(__MACH__)
UTIL_time_t UTIL_getTime(void) { return mach_absolute_time(); }
PTime UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd)
{
static mach_timebase_info_data_t rate;
static int init = 0;
if (!init) {
mach_timebase_info(&rate);
init = 1;
}
return (((clockEnd - clockStart) * (PTime)rate.numer) / ((PTime)rate.denom))/1000ULL;
}
PTime UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd)
{
static mach_timebase_info_data_t rate;
static int init = 0;
if (!init) {
mach_timebase_info(&rate);
init = 1;
}
return ((clockEnd - clockStart) * (PTime)rate.numer) / ((PTime)rate.denom);
}
#elif (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) /* C11 */) \
&& defined(TIME_UTC) /* C11 requires timespec_get, but FreeBSD 11 lacks it, while still claiming C11 compliance */
#include <stdlib.h> /* abort */
#include <stdio.h> /* perror */
UTIL_time_t UTIL_getTime(void)
{
/* time must be initialized, othersize it may fail msan test.
* No good reason, likely a limitation of timespec_get() for some target */
UTIL_time_t time = UTIL_TIME_INITIALIZER;
if (timespec_get(&time, TIME_UTC) != TIME_UTC) {
perror("timefn::timespec_get");
abort();
}
return time;
}
static UTIL_time_t UTIL_getSpanTime(UTIL_time_t begin, UTIL_time_t end)
{
UTIL_time_t diff;
if (end.tv_nsec < begin.tv_nsec) {
diff.tv_sec = (end.tv_sec - 1) - begin.tv_sec;
diff.tv_nsec = (end.tv_nsec + 1000000000ULL) - begin.tv_nsec;
} else {
diff.tv_sec = end.tv_sec - begin.tv_sec;
diff.tv_nsec = end.tv_nsec - begin.tv_nsec;
}
return diff;
}
PTime UTIL_getSpanTimeMicro(UTIL_time_t begin, UTIL_time_t end)
{
UTIL_time_t const diff = UTIL_getSpanTime(begin, end);
PTime micro = 0;
micro += 1000000ULL * diff.tv_sec;
micro += diff.tv_nsec / 1000ULL;
return micro;
}
PTime UTIL_getSpanTimeNano(UTIL_time_t begin, UTIL_time_t end)
{
UTIL_time_t const diff = UTIL_getSpanTime(begin, end);
PTime nano = 0;
nano += 1000000000ULL * diff.tv_sec;
nano += diff.tv_nsec;
return nano;
}
#else /* relies on standard C90 (note : clock_t measurements can be wrong when using multi-threading) */
UTIL_time_t UTIL_getTime(void) { return clock(); }
PTime UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd) { return 1000000ULL * (clockEnd - clockStart) / CLOCKS_PER_SEC; }
PTime UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd) { return 1000000000ULL * (clockEnd - clockStart) / CLOCKS_PER_SEC; }
#endif
/* returns time span in microseconds */
PTime UTIL_clockSpanMicro(UTIL_time_t clockStart )
{
UTIL_time_t const clockEnd = UTIL_getTime();
return UTIL_getSpanTimeMicro(clockStart, clockEnd);
}
/* returns time span in microseconds */
PTime UTIL_clockSpanNano(UTIL_time_t clockStart )
{
UTIL_time_t const clockEnd = UTIL_getTime();
return UTIL_getSpanTimeNano(clockStart, clockEnd);
}
void UTIL_waitForNextTick(void)
{
UTIL_time_t const clockStart = UTIL_getTime();
UTIL_time_t clockEnd;
do {
clockEnd = UTIL_getTime();
} while (UTIL_getSpanTimeNano(clockStart, clockEnd) == 0);
}

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/*
* Copyright (c) 2016-2020 Yann Collet, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
#ifndef TIME_FN_H_MODULE_287987
#define TIME_FN_H_MODULE_287987
#if defined (__cplusplus)
extern "C" {
#endif
/*-****************************************
* Dependencies
******************************************/
#include <sys/types.h> /* utime */
#if defined(_MSC_VER)
# include <sys/utime.h> /* utime */
#else
# include <utime.h> /* utime */
#endif
#include <time.h> /* clock_t, clock, CLOCKS_PER_SEC */
/*-****************************************
* Local Types
******************************************/
#if !defined (__VMS) && (defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) )
# include <stdint.h>
typedef uint64_t PTime; /* Precise Time */
#else
typedef unsigned long long PTime; /* does not support compilers without long long support */
#endif
/*-****************************************
* Time functions
******************************************/
#if defined(_WIN32) /* Windows */
#include <Windows.h> /* LARGE_INTEGER */
typedef LARGE_INTEGER UTIL_time_t;
#define UTIL_TIME_INITIALIZER { { 0, 0 } }
#elif defined(__APPLE__) && defined(__MACH__)
#include <mach/mach_time.h>
typedef PTime UTIL_time_t;
#define UTIL_TIME_INITIALIZER 0
#elif (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) /* C11 */) \
&& defined(TIME_UTC) /* C11 requires timespec_get, but FreeBSD 11 lacks it, while still claiming C11 compliance */
typedef struct timespec UTIL_time_t;
#define UTIL_TIME_INITIALIZER { 0, 0 }
#else /* relies on standard C90 (note : clock_t measurements can be wrong when using multi-threading) */
typedef clock_t UTIL_time_t;
#define UTIL_TIME_INITIALIZER 0
#endif
UTIL_time_t UTIL_getTime(void);
PTime UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd);
PTime UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd);
#define SEC_TO_MICRO ((PTime)1000000)
PTime UTIL_clockSpanMicro(UTIL_time_t clockStart);
PTime UTIL_clockSpanNano(UTIL_time_t clockStart);
void UTIL_waitForNextTick(void);
#if defined (__cplusplus)
}
#endif
#endif /* TIME_FN_H_MODULE_287987 */

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#build artefacts
collisionsTest

339
third_party/xxhash/tests/collisions/LICENSE vendored
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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.
Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.
You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:
a) You must cause the modified files to carry prominent notices
stating that you changed the files and the date of any change.
b) You must cause any work that you distribute or publish, that in
whole or in part contains or is derived from the Program or any
part thereof, to be licensed as a whole at no charge to all third
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c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an
announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
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does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
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on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.
Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
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In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
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3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:
a) Accompany it with the complete corresponding machine-readable
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c) Accompany it with the information you received as to the offer
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except as expressly provided under this License. Any attempt
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the Program or works based on it.
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This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.
9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
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NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
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YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

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# Brute force collision tester for 64-bit hashes
# Part of xxHash project
# Copyright (C) 2019-2020 Yann Collet
#
# GPL v2 License
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# You can contact the author at:
# - xxHash homepage: https://www.xxhash.com
# - xxHash source repository: https://github.com/Cyan4973/xxHash
#
SRC_DIRS = ./ ../../ allcodecs/
VPATH = $(SRC_DIRS)
CPPFLAGS += $(addprefix -I ,$(SRC_DIRS))
CFLAGS ?= -std=c99 \
-Wall -Wextra -Wconversion
CXXFLAGS ?= -Wall -Wextra -Wconversion -std=c++11
LDFLAGS += -pthread
TESTHASHES = 110000000
HASH_SRC := $(sort $(wildcard allcodecs/*.c allcodecs/*.cc))
HASH_OBJ := $(patsubst %.c,%.o,$(HASH_SRC))
.PHONY: default
default: release
.PHONY: all
all: release
collisionsTest: main.o pool.o threading.o sort.o $(HASH_OBJ)
$(CXX) $(CPPFLAGS) $(CXXFLAGS) $^ $(LDFLAGS) -o $@
main.o: hashes.h xxhash.h
release: CXXFLAGS += -O3
release: CFLAGS += -O3
release: collisionsTest
debug: CXXFLAGS += -g3 -O0 -DDEBUG
debug: CFLAGS += -g3 -O0 -DDEBUG
debug: collisionsTest
.PHONY: check
check: test
.PHONY: test
test: debug
@echo ""
@echo "## $(TESTHASHES) hashes with original and 0 threads"
@time ./collisionsTest --nbh=$(TESTHASHES)
@echo ""
@echo "## $(TESTHASHES) hashes with original and 4 threads"
@time ./collisionsTest --nbh=$(TESTHASHES) --threadlog=2
@echo ""
.PHONY: clean
clean:
$(RM) *.o allcodecs/*.o
$(RM) collisionsTest

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__collisionsTest__ is a brute force hash analyzer
which will measure a 64-bit hash algorithm's collision rate
by generating billions of hashes,
and comparing the result to an "ideal" target.
The test requires a very large amount of memory.
By default, it will generate 24 billion of 64-bit hashes,
requiring __192 GB of RAM__ for their storage.
The number of hashes can be modified using command `--nbh=`.
Be aware that testing the collision ratio of 64-bit hashes
requires a very large amount of hashes (several billion) for meaningful measurements.
To reduce RAM usage, an optional filter can be requested, with `--filter`.
It reduces the nb of candidates to analyze, hence associated RAM budget.
Note that the filter itself requires a lot of RAM
(32 GB by default, can be modified using `--filterlog=`,
a too small filter will not be efficient, aim at ~2 bytes per hash),
and reading and writing into filter cost a significant CPU budget,
so this method is slower.
It also doesn't allow advanced analysis of partial bitfields,
since most hashes will be discarded and not stored.
When using the filter, the RAM budget consists of the filter and a list of candidates,
which will be a fraction of the original hash list.
Using default settings (24 billion hashes, 32 GB filter),
the number of potential candidates should be reduced to less than 2 billion,
requiring ~14 GB for their storage.
Such a result also depends on hash algorithm's efficiency.
The number of effective candidates is likely to be lower, at ~ 1 billion,
but storage must allocate an upper bound.
For the default test, the expected "optimal" collision rate for a 64-bit hash function is ~18 collisions.
#### How to build
```
make
```
Note: the code is a mix of C99 and C++14,
it's not compatible with a C90-only compiler.
#### Build modifier
- `SLAB5`: use alternative pattern generator, friendlier for weak hash algorithms
- `POOL_MT`: if `=0`, disable multi-threading code (enabled by default)
#### How to integrate any hash in the tester
The build script will compile files found in `./allcodecs`.
Put the source code here.
This also works if the hash is a single `*.h` file.
The glue happens in `hashes.h`.
In this file, there are 2 sections:
- Adds the required `#include "header.h"`, and creates a wrapper
to respect the format expected by the function pointer.
- Adds the wrapper, along with the name and an indication of the output width,
to the table, at the end of `hashes.h`
Build with `make`. Locate your new hash with `./collisionsTest -h`,
it should be listed.
#### Usage
```
usage: ./collisionsTest [hashName] [opt]
list of hashNames: (...)
Optional parameters:
--nbh=NB Select nb of hashes to generate (25769803776 by default)
--filter Enable the filter. Slower, but reduces memory usage for same nb of hashes.
--threadlog=NB Use 2^NB threads
--len=NB Select length of input (255 bytes by default)
```
#### Some advises on how to setup a collisions test
Most tests are primarily driven by the amount of RAM available.
Here's a method to decide the size of the test.
Presuming that RAM budget is not plentiful, for this example 32 GB,
the `--filter` mode is actually compulsory to measure anything meaningful.
Let's plan 50% of memory for the filter, that's 16 GB.
This will be good enough to filter about 10% less hashes than this size.
Let's round down to 14 G.
By requesting 14G, the expectation is that the program will automatically
size the filter to 16 GB, and expect to store ~1G candidates,
leaving enough room to breeze for the system.
The command line becomes:
```
./collisionsTest --nbh=14G --filter NameOfHash
```
#### Examples:
Here are a few results produced with this tester:
| Algorithm | Input Len | Nb Hashes | Expected | Nb Collisions | Notes |
| --- | --- | --- | --- | --- | --- |
| __XXH3__ | 255 | 100 Gi | 312.5 | 326 | |
| __XXH64__ | 255 | 100 Gi | 312.5 | 294 | |
| __XXH128__ low64 | 512 | 100 Gi | 312.5 | 321 | |
| __XXH128__ high64| 512 | 100 Gi | 312.5 | 325 | |
| __XXH128__ | 255 | 100 Gi | 0.0 | 0 | a 128-bit hash is expected to generate 0 collisions |
Test on small inputs:
| Algorithm | Input Len | Nb Hashes | Expected | Nb Collisions | Notes |
| --- | --- | --- | --- | --- | --- |
| __XXH64__ | 8 | 100 Gi | 312.5 | __0__ | `XXH64` is bijective for `len==8` |
| __XXH3__ | 8 | 100 Gi | 312.5 | __0__ | `XXH3` is also bijective for `len==8` |
| __XXH3__ | 16 | 100 Gi | 312.5 | 332 | |
| __XXH3__ | 32 | 14 Gi | 6.1 | 3 | |
| __XXH128__ | 16 | 25 Gi | 0.0 | 0 | test range 9-16 |
| __XXH128__ | 32 | 25 Gi | 0.0 | 0 | test range 17-128 |
| __XXH128__ | 100 | 13 Gi | 0.0 | 0 | test range 17-128 |
| __XXH128__ | 200 | 13 Gi | 0.0 | 0 | test range 129-240 |

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Put in this directory all hash algorithms to test

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/*
* dummy.c, a fake hash algorithm, just to test integration capabilities.
* Part of the xxHash project
* Copyright (C) 2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
#include <dummy.h>
unsigned badsum32(const void* input, size_t len, unsigned seed)
{
unsigned sum = seed;
const unsigned char* in8 = input;
size_t c;
for (c=0; c<len; c++)
sum += in8[c];
return sum;
}

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/*
* dummy.c,
* A fake hash algorithm, just to test integration capabilities.
* Part of the xxHash project
* Copyright (C) 2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
#ifndef DUMMY_H_987987
#define DUMMY_H_987987
#if defined (__cplusplus)
extern "C" {
#endif
#include <stddef.h> /* size_t */
unsigned badsum32(const void* input, size_t len, unsigned seed);
#if defined (__cplusplus)
}
#endif
#endif /* DUMMY_H_987987 */

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/*
* List of hashes for the brute force collision tester
* Part of xxHash project
* Copyright (C) 2019-2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
#ifndef HASHES_H_1235465
#define HASHES_H_1235465
#include <stddef.h> /* size_t */
#include <stdint.h> /* uint64_t */
#define XXH_INLINE_ALL /* XXH128_hash_t */
#include "xxhash.h"
/* return type */
typedef union {
uint64_t h64;
XXH128_hash_t h128;
} UniHash;
UniHash uniHash32(uint64_t v32)
{ UniHash unih;
unih.h64 = v32;
return unih;
}
UniHash uniHash64(uint64_t v64)
{ UniHash unih;
unih.h64 = v64;
return unih;
}
UniHash uniHash128(XXH128_hash_t v128)
{ UniHash unih;
unih.h128 = v128;
return unih;
}
/* === xxHash === */
UniHash XXH3_wrapper (const void* data, size_t size)
{
return uniHash64( XXH3_64bits(data, size) );
}
UniHash XXH128_wrapper (const void* data, size_t size)
{
return uniHash128( XXH3_128bits(data, size) );
}
UniHash XXH128l_wrapper (const void* data, size_t size)
{
return uniHash64( XXH3_128bits(data, size).low64 );
}
UniHash XXH128h_wrapper (const void* data, size_t size)
{
return uniHash64( XXH3_128bits(data, size).high64 );
}
UniHash XXH64_wrapper (const void* data, size_t size)
{
return uniHash64 ( XXH64(data, size, 0) );
}
UniHash XXH32_wrapper (const void* data, size_t size)
{
return uniHash32( XXH32(data, size, 0) );
}
/* === Dummy integration example === */
#include "dummy.h"
UniHash badsum32_wrapper (const void* data, size_t size)
{
return uniHash32( badsum32(data, size, 0) );
}
/* === Table === */
typedef UniHash (*hashfn) (const void* data, size_t size);
typedef struct {
const char* name;
hashfn fn;
int bits;
} hashDescription;
#define HASH_FN_TOTAL 7
hashDescription hashfnTable[HASH_FN_TOTAL] = {
{ "xxh3" , XXH3_wrapper, 64 },
{ "xxh64" , XXH64_wrapper, 64 },
{ "xxh128", XXH128_wrapper, 128 },
{ "xxh128l", XXH128l_wrapper, 64 },
{ "xxh128h", XXH128h_wrapper, 64 },
{ "xxh32" , XXH32_wrapper, 32 },
{ "badsum32",badsum32_wrapper, 32 },
};
#endif /* HASHES_H_1235465 */

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/*
* Copyright (C) 2016-2020 Yann Collet, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
/* ====== Dependencies ======= */
#include <stddef.h> /* size_t */
#include <stdlib.h> /* malloc, calloc, free */
#include <string.h> /* memcpy */
#include <assert.h>
#include "pool.h"
/* ====== Compiler specifics ====== */
#if defined(_MSC_VER)
# pragma warning(disable : 4204) /* disable: C4204: non-constant aggregate initializer */
#endif
/* === Build Macro === */
#ifndef POOL_MT // can be defined on command line
# define POOL_MT 1
#endif
/* === Implementation === */
#if POOL_MT
#include "threading.h" /* pthread adaptation */
/* A job is a function and an opaque argument */
typedef struct POOL_job_s {
POOL_function function;
void *opaque;
} POOL_job;
struct POOL_ctx_s {
/* Keep track of the threads */
ZSTD_pthread_t* threads;
size_t threadCapacity;
size_t threadLimit;
/* The queue is a circular buffer */
POOL_job *queue;
size_t queueHead;
size_t queueTail;
size_t queueSize;
/* The number of threads working on jobs */
size_t numThreadsBusy;
/* Indicates if the queue is empty */
int queueEmpty;
/* The mutex protects the queue */
ZSTD_pthread_mutex_t queueMutex;
/* Condition variable for pushers to wait on when the queue is full */
ZSTD_pthread_cond_t queuePushCond;
/* Condition variables for poppers to wait on when the queue is empty */
ZSTD_pthread_cond_t queuePopCond;
/* Indicates if the queue is shutting down */
int shutdown;
};
/* POOL_thread() :
* Work thread for the thread pool.
* Waits for jobs and executes them.
* @returns : NULL on failure else non-null.
*/
static void* POOL_thread(void* opaque)
{
POOL_ctx* const ctx = (POOL_ctx*)opaque;
if (!ctx) { return NULL; }
for (;;) {
/* Lock the mutex and wait for a non-empty queue or until shutdown */
ZSTD_pthread_mutex_lock(&ctx->queueMutex);
while ( ctx->queueEmpty
|| (ctx->numThreadsBusy >= ctx->threadLimit) ) {
if (ctx->shutdown) {
/* even if !queueEmpty, (possible if numThreadsBusy >= threadLimit),
* a few threads will be shutdown while !queueEmpty,
* but enough threads will remain active to finish the queue */
ZSTD_pthread_mutex_unlock(&ctx->queueMutex);
return opaque;
}
ZSTD_pthread_cond_wait(&ctx->queuePopCond, &ctx->queueMutex);
}
/* Pop a job off the queue */
{ POOL_job const job = ctx->queue[ctx->queueHead];
ctx->queueHead = (ctx->queueHead + 1) % ctx->queueSize;
ctx->numThreadsBusy++;
ctx->queueEmpty = ctx->queueHead == ctx->queueTail;
/* Unlock the mutex, signal a pusher, and run the job */
ZSTD_pthread_cond_signal(&ctx->queuePushCond);
ZSTD_pthread_mutex_unlock(&ctx->queueMutex);
job.function(job.opaque);
/* If the intended queue size was 0, signal after finishing job */
ZSTD_pthread_mutex_lock(&ctx->queueMutex);
ctx->numThreadsBusy--;
if (ctx->queueSize == 1) {
ZSTD_pthread_cond_signal(&ctx->queuePushCond);
}
ZSTD_pthread_mutex_unlock(&ctx->queueMutex);
}
} /* for (;;) */
assert(0); /* Unreachable */
}
POOL_ctx* POOL_create(size_t numThreads, size_t queueSize)
{
POOL_ctx* ctx;
/* Check parameters */
if (!numThreads) { return NULL; }
/* Allocate the context and zero initialize */
ctx = (POOL_ctx*)calloc(1, sizeof(POOL_ctx));
if (!ctx) { return NULL; }
/* Initialize the job queue.
* It needs one extra space since one space is wasted to differentiate
* empty and full queues.
*/
ctx->queueSize = queueSize + 1;
ctx->queue = (POOL_job*)malloc(ctx->queueSize * sizeof(POOL_job));
ctx->queueHead = 0;
ctx->queueTail = 0;
ctx->numThreadsBusy = 0;
ctx->queueEmpty = 1;
(void)ZSTD_pthread_mutex_init(&ctx->queueMutex, NULL);
(void)ZSTD_pthread_cond_init(&ctx->queuePushCond, NULL);
(void)ZSTD_pthread_cond_init(&ctx->queuePopCond, NULL);
ctx->shutdown = 0;
/* Allocate space for the thread handles */
ctx->threads = (ZSTD_pthread_t*)malloc(numThreads * sizeof(ZSTD_pthread_t));
ctx->threadCapacity = 0;
/* Check for errors */
if (!ctx->threads || !ctx->queue) { POOL_free(ctx); return NULL; }
/* Initialize the threads */
{ size_t i;
for (i = 0; i < numThreads; ++i) {
if (ZSTD_pthread_create(&ctx->threads[i], NULL, &POOL_thread, ctx)) {
ctx->threadCapacity = i;
POOL_free(ctx);
return NULL;
} }
ctx->threadCapacity = numThreads;
ctx->threadLimit = numThreads;
}
return ctx;
}
/*! POOL_join() :
Shutdown the queue, wake any sleeping threads, and join all of the threads.
*/
static void POOL_join(POOL_ctx* ctx) {
/* Shut down the queue */
ZSTD_pthread_mutex_lock(&ctx->queueMutex);
ctx->shutdown = 1;
ZSTD_pthread_mutex_unlock(&ctx->queueMutex);
/* Wake up sleeping threads */
ZSTD_pthread_cond_broadcast(&ctx->queuePushCond);
ZSTD_pthread_cond_broadcast(&ctx->queuePopCond);
/* Join all of the threads */
{ size_t i;
for (i = 0; i < ctx->threadCapacity; ++i) {
ZSTD_pthread_join(ctx->threads[i], NULL); /* note : could fail */
} }
}
void POOL_free(POOL_ctx *ctx) {
if (!ctx) { return; }
POOL_join(ctx);
ZSTD_pthread_mutex_destroy(&ctx->queueMutex);
ZSTD_pthread_cond_destroy(&ctx->queuePushCond);
ZSTD_pthread_cond_destroy(&ctx->queuePopCond);
free(ctx->queue);
free(ctx->threads);
free(ctx);
}
size_t POOL_sizeof(POOL_ctx *ctx) {
if (ctx==NULL) return 0; /* supports sizeof NULL */
return sizeof(*ctx)
+ ctx->queueSize * sizeof(POOL_job)
+ ctx->threadCapacity * sizeof(ZSTD_pthread_t);
}
/* @return : 0 on success, 1 on error */
static int POOL_resize_internal(POOL_ctx* ctx, size_t numThreads)
{
if (numThreads <= ctx->threadCapacity) {
if (!numThreads) return 1;
ctx->threadLimit = numThreads;
return 0;
}
/* numThreads > threadCapacity */
{ ZSTD_pthread_t* const threadPool = (ZSTD_pthread_t*)malloc(numThreads * sizeof(ZSTD_pthread_t));
if (!threadPool) return 1;
/* replace existing thread pool */
memcpy(threadPool, ctx->threads, ctx->threadCapacity * sizeof(*threadPool));
free(ctx->threads);
ctx->threads = threadPool;
/* Initialize additional threads */
{ size_t threadId;
for (threadId = ctx->threadCapacity; threadId < numThreads; ++threadId) {
if (ZSTD_pthread_create(&threadPool[threadId], NULL, &POOL_thread, ctx)) {
ctx->threadCapacity = threadId;
return 1;
} }
} }
/* successfully expanded */
ctx->threadCapacity = numThreads;
ctx->threadLimit = numThreads;
return 0;
}
/* @return : 0 on success, 1 on error */
int POOL_resize(POOL_ctx* ctx, size_t numThreads)
{
int result;
if (ctx==NULL) return 1;
ZSTD_pthread_mutex_lock(&ctx->queueMutex);
result = POOL_resize_internal(ctx, numThreads);
ZSTD_pthread_cond_broadcast(&ctx->queuePopCond);
ZSTD_pthread_mutex_unlock(&ctx->queueMutex);
return result;
}
/**
* Returns 1 if the queue is full and 0 otherwise.
*
* When queueSize is 1 (pool was created with an intended queueSize of 0),
* then a queue is empty if there is a thread free _and_ no job is waiting.
*/
static int isQueueFull(POOL_ctx const* ctx) {
if (ctx->queueSize > 1) {
return ctx->queueHead == ((ctx->queueTail + 1) % ctx->queueSize);
} else {
return (ctx->numThreadsBusy == ctx->threadLimit) ||
!ctx->queueEmpty;
}
}
static void POOL_add_internal(POOL_ctx* ctx, POOL_function function, void *opaque)
{
POOL_job const job = {function, opaque};
assert(ctx != NULL);
if (ctx->shutdown) return;
ctx->queueEmpty = 0;
ctx->queue[ctx->queueTail] = job;
ctx->queueTail = (ctx->queueTail + 1) % ctx->queueSize;
ZSTD_pthread_cond_signal(&ctx->queuePopCond);
}
void POOL_add(POOL_ctx* ctx, POOL_function function, void* opaque)
{
assert(ctx != NULL);
ZSTD_pthread_mutex_lock(&ctx->queueMutex);
/* Wait until there is space in the queue for the new job */
while (isQueueFull(ctx) && (!ctx->shutdown)) {
ZSTD_pthread_cond_wait(&ctx->queuePushCond, &ctx->queueMutex);
}
POOL_add_internal(ctx, function, opaque);
ZSTD_pthread_mutex_unlock(&ctx->queueMutex);
}
int POOL_tryAdd(POOL_ctx* ctx, POOL_function function, void* opaque)
{
assert(ctx != NULL);
ZSTD_pthread_mutex_lock(&ctx->queueMutex);
if (isQueueFull(ctx)) {
ZSTD_pthread_mutex_unlock(&ctx->queueMutex);
return 0;
}
POOL_add_internal(ctx, function, opaque);
ZSTD_pthread_mutex_unlock(&ctx->queueMutex);
return 1;
}
#else /* POOL_MT not defined */
/* ========================== */
/* No multi-threading support */
/* ========================== */
/* We don't need any data, but if it is empty, malloc() might return NULL. */
struct POOL_ctx_s {
int dummy;
};
static POOL_ctx g_ctx;
POOL_ctx* POOL_create(size_t numThreads, size_t queueSize) {
(void)numThreads;
(void)queueSize;
return &g_ctx;
}
void POOL_free(POOL_ctx* ctx) {
assert(!ctx || ctx == &g_ctx);
(void)ctx;
}
int POOL_resize(POOL_ctx* ctx, size_t numThreads) {
(void)ctx; (void)numThreads;
return 0;
}
void POOL_add(POOL_ctx* ctx, POOL_function function, void* opaque) {
(void)ctx;
function(opaque);
}
int POOL_tryAdd(POOL_ctx* ctx, POOL_function function, void* opaque) {
(void)ctx;
function(opaque);
return 1;
}
size_t POOL_sizeof(POOL_ctx* ctx) {
if (ctx==NULL) return 0; /* supports sizeof NULL */
assert(ctx == &g_ctx);
return sizeof(*ctx);
}
#endif /* ZSTD_MULTITHREAD */

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third_party/xxhash/tests/collisions/pool.h vendored
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/*
* Copyright (c) 2016-2020 Yann Collet, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
#ifndef POOL_H
#define POOL_H
#if defined (__cplusplus)
extern "C" {
#endif
#include <stddef.h> /* size_t */
typedef struct POOL_ctx_s POOL_ctx;
/*! POOL_create() :
* Create a thread pool with at most `numThreads` threads.
* `numThreads` must be at least 1.
* The maximum number of queued jobs before blocking is `queueSize`.
* @return : POOL_ctx pointer on success, else NULL.
*/
POOL_ctx* POOL_create(size_t numThreads, size_t queueSize);
/*! POOL_free() :
* Free a thread pool returned by POOL_create().
*/
void POOL_free(POOL_ctx* ctx);
/*! POOL_resize() :
* Expands or shrinks pool's number of threads.
* This is more efficient than releasing + creating a new context,
* since it tries to preserve and re-use existing threads.
* `numThreads` must be at least 1.
* @return : 0 when resize was successful,
* !0 (typically 1) if there is an error.
* note : only numThreads can be resized, queueSize remains unchanged.
*/
int POOL_resize(POOL_ctx* ctx, size_t numThreads);
/*! POOL_sizeof() :
* @return threadpool memory usage
* note : compatible with NULL (returns 0 in this case)
*/
size_t POOL_sizeof(POOL_ctx* ctx);
/*! POOL_function :
* The function type that can be added to a thread pool.
*/
typedef void (*POOL_function)(void*);
/*! POOL_add() :
* Add the job `function(opaque)` to the thread pool. `ctx` must be valid.
* Possibly blocks until there is room in the queue.
* Note : The function may be executed asynchronously,
* therefore, `opaque` must live until function has been completed.
*/
void POOL_add(POOL_ctx* ctx, POOL_function function, void* opaque);
/*! POOL_tryAdd() :
* Add the job `function(opaque)` to thread pool _if_ a worker is available.
* Returns immediately even if not (does not block).
* @return : 1 if successful, 0 if not.
*/
int POOL_tryAdd(POOL_ctx* ctx, POOL_function function, void* opaque);
#if defined (__cplusplus)
}
#endif
#endif

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/*
* sort.cc - C++ sort functions
* Copyright (C) 2019-2020 Yann Collet
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
/*
* C++ sort functions tend to run faster than C ones due to templates allowing
* inline optimizations.
* Also, glibc's qsort() seems to inflate memory usage, resulting in OOM
* crashes on the test server.
*/
#include <algorithm> // std::sort
#define XXH_INLINE_ALL // XXH128_cmp
#include <xxhash.h>
#include "sort.hh"
void sort64(uint64_t* table, size_t size)
{
std::sort(table, table + size);
}
#include <stdlib.h> // qsort
void sort128(XXH128_hash_t* table, size_t size)
{
#if 0
// C++ sort using a custom function object
struct {
bool operator()(XXH128_hash_t a, XXH128_hash_t b) const
{
return XXH128_cmp(&a, &b);
}
} customLess;
std::sort(table, table + size, customLess);
#else
qsort(table, size, sizeof(*table), XXH128_cmp);
#endif
}

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third_party/xxhash/tests/collisions/sort.hh vendored
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/*
* sort.hh - headers for C++ sort functions
* Copyright (C) 2019-2020 Yann Collet
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at :
* - xxHash homepage : https://www.xxhash.com
* - xxHash source repository : https://github.com/Cyan4973/xxHash
*/
#ifdef __cplusplus
extern "C" {
#endif
#include <stddef.h> // size
#include <stdint.h> // uint64_t
#define XXH_STATIC_LINKING_ONLY // XXH128_hash_t
#include "xxhash.h"
void sort64(uint64_t* table, size_t size);
void sort128(XXH128_hash_t* table, size_t size);
#ifdef __cplusplus
} // extern C
#endif

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third_party/xxhash/tests/collisions/threading.c vendored
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/**
* Copyright (c) 2016 Tino Reichardt
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
*
* You can contact the author at:
* - zstdmt source repository: https://github.com/mcmilk/zstdmt
*/
/**
* This file will hold wrapper for systems, which do not support pthreads
*/
/* === Build Macro === */
#ifndef POOL_MT // can be defined on command line
# define POOL_MT 1
#endif
/* create fake symbol to avoid empty translation unit warning */
int g_ZSTD_threading_useles_symbol;
#if POOL_MT && defined(_WIN32)
/**
* Windows minimalist Pthread Wrapper
*/
/* === Dependencies === */
#include <process.h>
#include <errno.h>
#include "threading.h"
/* === Implementation === */
static unsigned __stdcall worker(void *arg)
{
ZSTD_pthread_t* const thread = (ZSTD_pthread_t*) arg;
thread->arg = thread->start_routine(thread->arg);
return 0;
}
int ZSTD_pthread_create(ZSTD_pthread_t* thread, const void* unused,
void* (*start_routine) (void*), void* arg)
{
(void)unused;
thread->arg = arg;
thread->start_routine = start_routine;
thread->handle = (HANDLE) _beginthreadex(NULL, 0, worker, thread, 0, NULL);
if (!thread->handle)
return errno;
else
return 0;
}
int ZSTD_pthread_join(ZSTD_pthread_t thread, void **value_ptr)
{
DWORD result;
if (!thread.handle) return 0;
result = WaitForSingleObject(thread.handle, INFINITE);
switch (result) {
case WAIT_OBJECT_0:
if (value_ptr) *value_ptr = thread.arg;
return 0;
case WAIT_ABANDONED:
return EINVAL;
default:
return (int)GetLastError();
}
}
#endif /* POOL_MT */

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/**
* Copyright (c) 2016 Tino Reichardt
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
*
* You can contact the author at:
* - zstdmt source repository: https://github.com/mcmilk/zstdmt
*/
#ifndef THREADING_H_938743
#define THREADING_H_938743
#if defined (__cplusplus)
extern "C" {
#endif
/* === Build Macro === */
#ifndef POOL_MT // can be defined on command line
# define POOL_MT 1
#endif
/* === Implementation === */
#if POOL_MT && defined(_WIN32)
/**
* Define windows version before include
*/
#undef WINVER
#define WINVER 0x0600
#undef _WIN32_WINNT
#define _WIN32_WINNT 0x0600
#ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#include <stdio.h>
/* mutex */
#define ZSTD_pthread_mutex_t CRITICAL_SECTION
#define ZSTD_pthread_mutex_init(a, b) ((void)(b), InitializeCriticalSection((a)), 0)
#define ZSTD_pthread_mutex_destroy(a) DeleteCriticalSection((a))
#define ZSTD_pthread_mutex_lock(a) EnterCriticalSection((a))
#define ZSTD_pthread_mutex_unlock(a) LeaveCriticalSection((a))
/* condition variable */
#define ZSTD_pthread_cond_t CONDITION_VARIABLE
#define ZSTD_pthread_cond_init(a, b) ((void)(b), InitializeConditionVariable((a)), 0)
#define ZSTD_pthread_cond_destroy(a) ((void)(a))
#define ZSTD_pthread_cond_wait(a, b) SleepConditionVariableCS((a), (b), INFINITE)
#define ZSTD_pthread_cond_signal(a) WakeConditionVariable((a))
#define ZSTD_pthread_cond_broadcast(a) WakeAllConditionVariable((a))
/* ZSTD_pthread_create() and ZSTD_pthread_join() */
typedef struct {
HANDLE handle;
void* (*start_routine)(void*);
void* arg;
} ZSTD_pthread_t;
int ZSTD_pthread_create(ZSTD_pthread_t* thread, const void* unused,
void* (*start_routine) (void*), void* arg);
int ZSTD_pthread_join(ZSTD_pthread_t thread, void** value_ptr);
/**
* add here more wrappers as required
*/
#elif POOL_MT /* posix assumed ; need a better detection method */
/* === POSIX Systems === */
# include <pthread.h>
#define ZSTD_pthread_mutex_t pthread_mutex_t
#define ZSTD_pthread_mutex_init(a, b) pthread_mutex_init((a), (b))
#define ZSTD_pthread_mutex_destroy(a) pthread_mutex_destroy((a))
#define ZSTD_pthread_mutex_lock(a) pthread_mutex_lock((a))
#define ZSTD_pthread_mutex_unlock(a) pthread_mutex_unlock((a))
#define ZSTD_pthread_cond_t pthread_cond_t
#define ZSTD_pthread_cond_init(a, b) pthread_cond_init((a), (b))
#define ZSTD_pthread_cond_destroy(a) pthread_cond_destroy((a))
#define ZSTD_pthread_cond_wait(a, b) pthread_cond_wait((a), (b))
#define ZSTD_pthread_cond_signal(a) pthread_cond_signal((a))
#define ZSTD_pthread_cond_broadcast(a) pthread_cond_broadcast((a))
#define ZSTD_pthread_t pthread_t
#define ZSTD_pthread_create(a, b, c, d) pthread_create((a), (b), (c), (d))
#define ZSTD_pthread_join(a, b) pthread_join((a),(b))
#else /* POOL_MT == 0 */
/* No multithreading support */
typedef int ZSTD_pthread_mutex_t;
#define ZSTD_pthread_mutex_init(a, b) ((void)(a), (void)(b), 0)
#define ZSTD_pthread_mutex_destroy(a) ((void)(a))
#define ZSTD_pthread_mutex_lock(a) ((void)(a))
#define ZSTD_pthread_mutex_unlock(a) ((void)(a))
typedef int ZSTD_pthread_cond_t;
#define ZSTD_pthread_cond_init(a, b) ((void)(a), (void)(b), 0)
#define ZSTD_pthread_cond_destroy(a) ((void)(a))
#define ZSTD_pthread_cond_wait(a, b) ((void)(a), (void)(b))
#define ZSTD_pthread_cond_signal(a) ((void)(a))
#define ZSTD_pthread_cond_broadcast(a) ((void)(a))
/* do not use ZSTD_pthread_t */
#endif /* POOL_MT */
#if defined (__cplusplus)
}
#endif
#endif /* THREADING_H_938743 */

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third_party/xxhash/tests/generate_unicode_test.c vendored
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/*
* Generates a Unicode test for xxhsum without using Unicode in the source files.
*
* Copyright (C) 2020 Devin Hussey (easyaspi314)
*
* BSD 2-Clause License (https://www.opensource.org/licenses/bsd-license.php)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Certain terminals don't properly handle UTF-8 (i.e. rxvt and command prompt
* in the default codepage), and that can cause issues when editing text.
*
* We use this C file to generate a file with a Unicode filename, a file with
* a checksum of said file, and both a Windows batch script and a Unix shell
* script to test the file.
*/
#define _CRT_SECURE_NO_WARNINGS /* Silence warnings on MSVC */
#include <stdio.h>
/* Use a Japanese filename, something that can't be cheated with ANSI.
* yuniko-do.unicode (literally unicode.unicode) */
/* Use raw hex values to ensure that the output is well-formed UTF-8. It is also more C90 compliant. */
static const char FILENAME[] = {
(char)0xe3, (char)0x83, (char)0xa6, /* U+30e6: Katakana letter yu */
(char)0xe3, (char)0x83, (char)0x8b, /* U+30cb: Katakana letter ni */
(char)0xe3, (char)0x82, (char)0xb3, /* U+30b3: Katakana letter ko */
(char)0xe3, (char)0x83, (char)0xbc, /* U+30fc: Katakana-Hiragana prolonged sound mark (dash) */
(char)0xe3, (char)0x83, (char)0x89, /* U+30c9: Katakana letter do */
'.','u','n','i','c','o','d','e','\0' /* ".unicode" (so we can glob in make clean and .gitignore) */
};
#ifdef _WIN32
/* The same text as above, but encoded in Windows UTF-16. */
static const wchar_t WFILENAME[] = { 0x30e6, 0x30cb, 0x30b3, 0x30fc, 0x30c9, L'.', L'u', L'n', L'i', L'c', L'o', L'd', L'e', L'\0' };
#endif
int main(void)
{
FILE *f, *script, *checksum;
/* Create our Unicode file. Use _wfopen on Windows as fopen doesn't support Unicode filenames. */
#ifdef _WIN32
if (!(f = _wfopen(WFILENAME, L"wb"))) return 1;
#else
if (!(f = fopen(FILENAME, "wb"))) return 1;
#endif
fprintf(f, "test\n");
fclose(f);
/* XXH64 checksum file with the precalculated checksum for said file. */
if (!(checksum = fopen("unicode_test.xxh64", "wb")))
return 1;
fprintf(checksum, "2d7f1808da1fa63c %s\n", FILENAME);
fclose(checksum);
/* Create two scripts for both Windows and Unix. */
/* Generate a Windows batch script. Always insert CRLF manually. */
if (!(script = fopen("unicode_test.bat", "wb")))
return 1;
/* Disable echoing the commands. We do that ourselves the naive way. */
fprintf(script, "@echo off\r\n");
/* Change to codepage 65001 to enable UTF-8 support. */
fprintf(script, "chcp 65001 >NUL 2>&1\r\n");
/* First test a Unicode filename */
fprintf(script, "echo Testing filename provided on command line...\r\n");
fprintf(script, "echo xxhsum.exe \"%s\"\r\n", FILENAME);
fprintf(script, "xxhsum.exe \"%s\"\r\n", FILENAME);
/* Bail on error */
fprintf(script, "if %%ERRORLEVEL%% neq 0 (\r\n");
fprintf(script, " exit /B %%ERRORLEVEL%%\r\n");
fprintf(script, ")\r\n");
/* Then test a checksum file. */
fprintf(script, "echo Testing a checksum file...\r\n");
fprintf(script, "echo xxhsum.exe -c unicode_test.xxh64\r\n");
fprintf(script, "xxhsum.exe -c unicode_test.xxh64\r\n");
fprintf(script, "exit /B %%ERRORLEVEL%%\r\n");
fclose(script);
/* Generate a Unix shell script */
if (!(script = fopen("unicode_test.sh", "wb")))
return 1;
fprintf(script, "#!/bin/sh\n");
/*
* Some versions of MSYS, MinGW and Cygwin do not support UTF-8, and the ones that
* don't may error with something like this:
*
* Error: Could not open '<mojibake>.unicode': No such file or directory.
*
* which is an internal error that happens when it tries to convert MinGW/Cygwin
* paths to Windows paths.
*
* In that case, we bail to cmd.exe and the batch script, which supports UTF-8
* on Windows 7 and later.
*/
fprintf(script, "case $(uname) in\n");
/* MinGW/MSYS converts /c to C:\ unless you have a double slash,
* Cygwin does not. */
fprintf(script, " *CYGWIN*)\n");
fprintf(script, " exec cmd.exe /c unicode_test.bat\n");
fprintf(script, " ;;\n");
fprintf(script, " *MINGW*|*MSYS*)\n");
fprintf(script, " exec cmd.exe //c unicode_test.bat\n");
fprintf(script, " ;;\n");
fprintf(script, "esac\n");
/* First test a Unicode filename */
fprintf(script, "echo Testing filename provided on command line...\n");
fprintf(script, "echo './xxhsum \"%s\" || exit $?'\n", FILENAME);
fprintf(script, "./xxhsum \"%s\" || exit $?\n", FILENAME);
/* Then test a checksum file. */
fprintf(script, "echo Testing a checksum file...\n");
fprintf(script, "echo './xxhsum -c unicode_test.xxh64 || exit $?'\n");
fprintf(script, "./xxhsum -c unicode_test.xxh64 || exit $?\n");
fclose(script);
return 0;
}

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/*
* Multi-include test program
* Validates that xxhash.h can be included multiple times and in any order
*
* Copyright (C) 2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
#include <stdio.h> /* printf */
/* Normal include, gives access to public symbols */
#include "../xxhash.h"
/*
* Advanced include, gives access to experimental symbols
* This test ensure that xxhash.h can be included multiple times and in any
* order. This order is more difficult: Without care, the declaration of
* experimental symbols could be skipped.
*/
#define XXH_STATIC_LINKING_ONLY
#include "../xxhash.h"
/*
* Inlining: Re-define all identifiers, keep them private to the unit.
* Note: Without specific efforts, the identifier names would collide.
*
* To be linked with and without xxhash.o to test the symbol's presence and
* naming collisions.
*/
#define XXH_INLINE_ALL
#include "../xxhash.h"
int main(void)
{
XXH3_state_t state; /* part of experimental API */
XXH3_64bits_reset(&state);
const char input[] = "Hello World !";
XXH3_64bits_update(&state, input, sizeof(input));
XXH64_hash_t const h = XXH3_64bits_digest(&state);
printf("hash '%s': %08x%08x \n", input, (unsigned)(h >> 32), (unsigned)h);
return 0;
}

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/*
* Multi-include test program
* ensure that pixel, bool and vector are not redefined
*
* Copyright (C) 2020 Yann Collet
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
/* gcc's altivec.h, included for the VSX code path,
* may, in some circumstances, redefine
* bool, vector and pixel keywords.
*
* This unit checks if it happens.
* It's a compile test.
* The test is mostly meaningful for PPC target using altivec.h
* hence XXH_VECTOR == XXH_VSX
*/
#define BOOL_VALUE 32123456
#define bool BOOL_VALUE
#define VECTOR_VALUE 374464784
#define vector VECTOR_VALUE
#define PIXEL_VALUE 5846841
#define pixel PIXEL_VALUE
#define XXH_INLINE_ALL
#include "../xxhash.h"
#if (bool != BOOL_VALUE)
# error "bool macro was redefined !"
#endif
#if (vector != VECTOR_VALUE)
# error "vector macro was redefined !"
#endif
#if (pixel != PIXEL_VALUE)
# error "pixel macro was redefined !"
#endif
int g_nonEmptyUnit = 0;

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.
.TH "XXHSUM" "1" "July 2020" "xxhsum 0.7.4" "User Commands"
.
.SH "NAME"
\fBxxhsum\fR \- print or check xxHash non\-cryptographic checksums
.
.SH "SYNOPSIS"
\fBxxhsum [<OPTION>] \.\.\. [<FILE>] \.\.\.\fR \fBxxhsum \-b [<OPTION>] \.\.\.\fR
.
.P
\fBxxh32sum\fR is equivalent to \fBxxhsum \-H0\fR \fBxxh64sum\fR is equivalent to \fBxxhsum \-H1\fR \fBxxh128sum\fR is equivalent to \fBxxhsum \-H2\fR
.
.SH "DESCRIPTION"
Print or check xxHash (32, 64 or 128 bits) checksums\. When no \fIFILE\fR, read standard input, except if it\'s the console\. When \fIFILE\fR is \fB\-\fR, read standard input even if it\'s the console\.
.
.P
\fBxxhsum\fR supports a command line syntax similar but not identical to md5sum(1)\. Differences are: \fBxxhsum\fR doesn\'t have text/binary mode switch (\fB\-b\fR, \fB\-t\fR); \fBxxhsum\fR always treats files as binary file; \fBxxhsum\fR has a hash bit width switch (\fB\-H\fR);
.
.P
As xxHash is a fast non\-cryptographic checksum algorithm, \fBxxhsum\fR should not be used for security related purposes\.
.
.P
\fBxxhsum \-b\fR invokes benchmark mode\. See \fIOPTIONS\fR and \fIEXAMPLES\fR for details\.
.
.SH "OPTIONS"
.
.TP
\fB\-V\fR, \fB\-\-version\fR
Displays xxhsum version and exits
.
.TP
\fB\-H\fR\fIHASHTYPE\fR
Hash selection\. \fIHASHTYPE\fR means \fB0\fR=32bits, \fB1\fR=64bits, \fB2\fR=128bits\. Alternatively, \fIHASHTYPE\fR \fB32\fR=32bits, \fB64\fR=64bits, \fB128\fR=128bits\. Default value is \fB1\fR (64bits)
.
.TP
\fB\-\-tag\fR
Output in the BSD style\.
.
.TP
\fB\-\-little\-endian\fR
Set output hexadecimal checksum value as little endian convention\. By default, value is displayed as big endian\.
.
.TP
\fB\-h\fR, \fB\-\-help\fR
Displays help and exits
.
.P
\fBThe following four options are useful only when verifying checksums (\fB\-c\fR)\fR
.
.TP
\fB\-c\fR, \fB\-\-check\fR \fIFILE\fR
Read xxHash sums from \fIFILE\fR and check them
.
.TP
\fB\-q\fR, \fB\-\-quiet\fR
Don\'t print OK for each successfully verified file
.
.TP
\fB\-\-strict\fR
Return an error code if any line in the file is invalid, not just if some checksums are wrong\. This policy is disabled by default, though UI will prompt an informational message if any line in the file is detected invalid\.
.
.TP
\fB\-\-status\fR
Don\'t output anything\. Status code shows success\.
.
.TP
\fB\-w\fR, \fB\-\-warn\fR
Emit a warning message about each improperly formatted checksum line\.
.
.P
\fBThe following options are useful only benchmark purpose\fR
.
.TP
\fB\-b\fR
Benchmark mode\. See \fIEXAMPLES\fR for details\.
.
.TP
\fB\-b#\fR
Specify ID of variant to be tested\. Multiple variants can be selected, separated by a \',\' comma\.
.
.TP
\fB\-B\fR\fIBLOCKSIZE\fR
Only useful for benchmark mode (\fB\-b\fR)\. See \fIEXAMPLES\fR for details\. \fIBLOCKSIZE\fR specifies benchmark mode\'s test data block size in bytes\. Default value is 102400
.
.TP
\fB\-i\fR\fIITERATIONS\fR
Only useful for benchmark mode (\fB\-b\fR)\. See \fIEXAMPLES\fR for details\. \fIITERATIONS\fR specifies number of iterations in benchmark\. Single iteration lasts approximately 1000 milliseconds\. Default value is 3
.
.SH "EXIT STATUS"
\fBxxhsum\fR exit \fB0\fR on success, \fB1\fR if at least one file couldn\'t be read or doesn\'t have the same checksum as the \fB\-c\fR option\.
.
.SH "EXAMPLES"
Output xxHash (64bit) checksum values of specific files to standard output
.
.IP "" 4
.
.nf
$ xxhsum \-H1 foo bar baz
.
.fi
.
.IP "" 0
.
.P
Output xxHash (32bit and 64bit) checksum values of specific files to standard output, and redirect it to \fBxyz\.xxh32\fR and \fBqux\.xxh64\fR
.
.IP "" 4
.
.nf
$ xxhsum \-H0 foo bar baz > xyz\.xxh32
$ xxhsum \-H1 foo bar baz > qux\.xxh64
.
.fi
.
.IP "" 0
.
.P
Read xxHash sums from specific files and check them
.
.IP "" 4
.
.nf
$ xxhsum \-c xyz\.xxh32 qux\.xxh64
.
.fi
.
.IP "" 0
.
.P
Benchmark xxHash algorithm\. By default, \fBxxhsum\fR benchmarks xxHash main variants on a synthetic sample of 100 KB, and print results into standard output\. The first column is the algorithm, the second column is the source data size in bytes, the third column is the number of hashes generated per second (throughput), and finally the last column translates speed in megabytes per second\.
.
.IP "" 4
.
.nf
$ xxhsum \-b
.
.fi
.
.IP "" 0
.
.P
In the following example, the sample to hash is set to 16384 bytes, the variants to be benched are selected by their IDs, and each benchmark test is repeated 10 times, for increased accuracy\.
.
.IP "" 4
.
.nf
$ xxhsum \-b1,2,3 \-i10 \-B16384
.
.fi
.
.IP "" 0
.
.SH "BUGS"
Report bugs at: https://github\.com/Cyan4973/xxHash/issues/
.
.SH "AUTHOR"
Yann Collet
.
.SH "SEE ALSO"
md5sum(1)

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xxhsum(1) -- print or check xxHash non-cryptographic checksums
==============================================================
SYNOPSIS
--------
`xxhsum [<OPTION>] ... [<FILE>] ...`
`xxhsum -b [<OPTION>] ...`
`xxh32sum` is equivalent to `xxhsum -H0`
`xxh64sum` is equivalent to `xxhsum -H1`
`xxh128sum` is equivalent to `xxhsum -H2`
DESCRIPTION
-----------
Print or check xxHash (32, 64 or 128 bits) checksums.
When no <FILE>, read standard input, except if it's the console.
When <FILE> is `-`, read standard input even if it's the console.
`xxhsum` supports a command line syntax similar but not identical to md5sum(1).
Differences are:
`xxhsum` doesn't have text/binary mode switch (`-b`, `-t`);
`xxhsum` always treats files as binary file;
`xxhsum` has a hash bit width switch (`-H`);
As xxHash is a fast non-cryptographic checksum algorithm,
`xxhsum` should not be used for security related purposes.
`xxhsum -b` invokes benchmark mode. See [OPTIONS](#OPTIONS) and [EXAMPLES](#EXAMPLES) for details.
OPTIONS
-------
* `-V`, `--version`:
Displays xxhsum version and exits
* `-H`<HASHTYPE>:
Hash selection. <HASHTYPE> means `0`=32bits, `1`=64bits, `2`=128bits.
Alternatively, <HASHTYPE> `32`=32bits, `64`=64bits, `128`=128bits.
Default value is `1` (64bits)
* `--tag`:
Output in the BSD style.
* `--little-endian`:
Set output hexadecimal checksum value as little endian convention.
By default, value is displayed as big endian.
* `-h`, `--help`:
Displays help and exits
**The following four options are useful only when verifying checksums (`-c`)**
* `-c`, `--check` <FILE>:
Read xxHash sums from <FILE> and check them
* `-q`, `--quiet`:
Don't print OK for each successfully verified file
* `--strict`:
Return an error code if any line in the file is invalid,
not just if some checksums are wrong.
This policy is disabled by default,
though UI will prompt an informational message
if any line in the file is detected invalid.
* `--status`:
Don't output anything. Status code shows success.
* `-w`, `--warn`:
Emit a warning message about each improperly formatted checksum line.
**The following options are useful only benchmark purpose**
* `-b`:
Benchmark mode. See [EXAMPLES](#EXAMPLES) for details.
* `-b#`:
Specify ID of variant to be tested.
Multiple variants can be selected, separated by a ',' comma.
* `-B`<BLOCKSIZE>:
Only useful for benchmark mode (`-b`). See [EXAMPLES](#EXAMPLES) for details.
<BLOCKSIZE> specifies benchmark mode's test data block size in bytes.
Default value is 102400
* `-i`<ITERATIONS>:
Only useful for benchmark mode (`-b`). See [EXAMPLES](#EXAMPLES) for details.
<ITERATIONS> specifies number of iterations in benchmark. Single iteration
lasts approximately 1000 milliseconds. Default value is 3
EXIT STATUS
-----------
`xxhsum` exit `0` on success, `1` if at least one file couldn't be read or
doesn't have the same checksum as the `-c` option.
EXAMPLES
--------
Output xxHash (64bit) checksum values of specific files to standard output
$ xxhsum -H1 foo bar baz
Output xxHash (32bit and 64bit) checksum values of specific files to standard
output, and redirect it to `xyz.xxh32` and `qux.xxh64`
$ xxhsum -H0 foo bar baz > xyz.xxh32
$ xxhsum -H1 foo bar baz > qux.xxh64
Read xxHash sums from specific files and check them
$ xxhsum -c xyz.xxh32 qux.xxh64
Benchmark xxHash algorithm.
By default, `xxhsum` benchmarks xxHash main variants
on a synthetic sample of 100 KB,
and print results into standard output.
The first column is the algorithm,
the second column is the source data size in bytes,
the third column is the number of hashes generated per second (throughput),
and finally the last column translates speed in megabytes per second.
$ xxhsum -b
In the following example,
the sample to hash is set to 16384 bytes,
the variants to be benched are selected by their IDs,
and each benchmark test is repeated 10 times, for increased accuracy.
$ xxhsum -b1,2,3 -i10 -B16384
BUGS
----
Report bugs at: https://github.com/Cyan4973/xxHash/issues/
AUTHOR
------
Yann Collet
SEE ALSO
--------
md5sum(1)

1503
third_party/xxhash/xxhsum.c vendored
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