It has been replaced by C11 stdatomic.h and is now unused.pull/244/merge
Anton Khirnov
9 years ago
parent
59c7022740
commit
5cc0057f49
9 changed files with 0 additions and 403 deletions
@ -1,109 +0,0 @@ |
|||||||
/*
|
|
||||||
* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com> |
|
||||||
* |
|
||||||
* This file is part of Libav. |
|
||||||
* |
|
||||||
* Libav is free software; you can redistribute it and/or |
|
||||||
* modify it under the terms of the GNU Lesser General Public |
|
||||||
* License as published by the Free Software Foundation; either |
|
||||||
* version 2.1 of the License, or (at your option) any later version. |
|
||||||
* |
|
||||||
* Libav 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 |
|
||||||
* Lesser General Public License for more details. |
|
||||||
* |
|
||||||
* You should have received a copy of the GNU Lesser General Public |
|
||||||
* License along with Libav; if not, write to the Free Software |
|
||||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
||||||
*/ |
|
||||||
|
|
||||||
#include "config.h" |
|
||||||
#include "atomic.h" |
|
||||||
|
|
||||||
#if !HAVE_ATOMICS_NATIVE |
|
||||||
|
|
||||||
#if HAVE_PTHREADS |
|
||||||
|
|
||||||
#include <pthread.h> |
|
||||||
|
|
||||||
static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER; |
|
||||||
|
|
||||||
int avpriv_atomic_int_get(volatile int *ptr) |
|
||||||
{ |
|
||||||
int res; |
|
||||||
|
|
||||||
pthread_mutex_lock(&atomic_lock); |
|
||||||
res = *ptr; |
|
||||||
pthread_mutex_unlock(&atomic_lock); |
|
||||||
|
|
||||||
return res; |
|
||||||
} |
|
||||||
|
|
||||||
void avpriv_atomic_int_set(volatile int *ptr, int val) |
|
||||||
{ |
|
||||||
pthread_mutex_lock(&atomic_lock); |
|
||||||
*ptr = val; |
|
||||||
pthread_mutex_unlock(&atomic_lock); |
|
||||||
} |
|
||||||
|
|
||||||
int avpriv_atomic_int_add_and_fetch(volatile int *ptr, int inc) |
|
||||||
{ |
|
||||||
int res; |
|
||||||
|
|
||||||
pthread_mutex_lock(&atomic_lock); |
|
||||||
*ptr += inc; |
|
||||||
res = *ptr; |
|
||||||
pthread_mutex_unlock(&atomic_lock); |
|
||||||
|
|
||||||
return res; |
|
||||||
} |
|
||||||
|
|
||||||
void *avpriv_atomic_ptr_cas(void * volatile *ptr, void *oldval, void *newval) |
|
||||||
{ |
|
||||||
void *ret; |
|
||||||
pthread_mutex_lock(&atomic_lock); |
|
||||||
ret = *ptr; |
|
||||||
if (*ptr == oldval) |
|
||||||
*ptr = newval; |
|
||||||
pthread_mutex_unlock(&atomic_lock); |
|
||||||
return ret; |
|
||||||
} |
|
||||||
|
|
||||||
#elif !HAVE_THREADS |
|
||||||
|
|
||||||
int avpriv_atomic_int_get(volatile int *ptr) |
|
||||||
{ |
|
||||||
return *ptr; |
|
||||||
} |
|
||||||
|
|
||||||
void avpriv_atomic_int_set(volatile int *ptr, int val) |
|
||||||
{ |
|
||||||
*ptr = val; |
|
||||||
} |
|
||||||
|
|
||||||
int avpriv_atomic_int_add_and_fetch(volatile int *ptr, int inc) |
|
||||||
{ |
|
||||||
*ptr += inc; |
|
||||||
return *ptr; |
|
||||||
} |
|
||||||
|
|
||||||
void *avpriv_atomic_ptr_cas(void * volatile *ptr, void *oldval, void *newval) |
|
||||||
{ |
|
||||||
if (*ptr == oldval) { |
|
||||||
*ptr = newval; |
|
||||||
return oldval; |
|
||||||
} |
|
||||||
return *ptr; |
|
||||||
} |
|
||||||
|
|
||||||
#else /* HAVE_THREADS */ |
|
||||||
|
|
||||||
/* This should never trigger, unless a new threading implementation
|
|
||||||
* without correct atomics dependencies in configure or a corresponding |
|
||||||
* atomics implementation is added. */ |
|
||||||
#error "Threading is enabled, but there is no implementation of atomic operations available" |
|
||||||
|
|
||||||
#endif /* HAVE_PTHREADS */ |
|
||||||
|
|
||||||
#endif /* !HAVE_ATOMICS_NATIVE */ |
|
||||||
@ -1,79 +0,0 @@ |
|||||||
/*
|
|
||||||
* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com> |
|
||||||
* |
|
||||||
* This file is part of Libav. |
|
||||||
* |
|
||||||
* Libav is free software; you can redistribute it and/or |
|
||||||
* modify it under the terms of the GNU Lesser General Public |
|
||||||
* License as published by the Free Software Foundation; either |
|
||||||
* version 2.1 of the License, or (at your option) any later version. |
|
||||||
* |
|
||||||
* Libav 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 |
|
||||||
* Lesser General Public License for more details. |
|
||||||
* |
|
||||||
* You should have received a copy of the GNU Lesser General Public |
|
||||||
* License along with Libav; if not, write to the Free Software |
|
||||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
||||||
*/ |
|
||||||
|
|
||||||
#ifndef AVUTIL_ATOMIC_H |
|
||||||
#define AVUTIL_ATOMIC_H |
|
||||||
|
|
||||||
#include "config.h" |
|
||||||
|
|
||||||
#if HAVE_ATOMICS_NATIVE |
|
||||||
|
|
||||||
#if HAVE_ATOMICS_GCC |
|
||||||
#include "atomic_gcc.h" |
|
||||||
#elif HAVE_ATOMICS_WIN32 |
|
||||||
#include "atomic_win32.h" |
|
||||||
#elif HAVE_ATOMICS_SUNCC |
|
||||||
#include "atomic_suncc.h" |
|
||||||
#endif |
|
||||||
|
|
||||||
#else |
|
||||||
|
|
||||||
/**
|
|
||||||
* Load the current value stored in an atomic integer. |
|
||||||
* |
|
||||||
* @param ptr atomic integer |
|
||||||
* @return the current value of the atomic integer |
|
||||||
* @note This acts as a memory barrier. |
|
||||||
*/ |
|
||||||
int avpriv_atomic_int_get(volatile int *ptr); |
|
||||||
|
|
||||||
/**
|
|
||||||
* Store a new value in an atomic integer. |
|
||||||
* |
|
||||||
* @param ptr atomic integer |
|
||||||
* @param val the value to store in the atomic integer |
|
||||||
* @note This acts as a memory barrier. |
|
||||||
*/ |
|
||||||
void avpriv_atomic_int_set(volatile int *ptr, int val); |
|
||||||
|
|
||||||
/**
|
|
||||||
* Add a value to an atomic integer. |
|
||||||
* |
|
||||||
* @param ptr atomic integer |
|
||||||
* @param inc the value to add to the atomic integer (may be negative) |
|
||||||
* @return the new value of the atomic integer. |
|
||||||
* @note This does NOT act as a memory barrier. This is primarily |
|
||||||
* intended for reference counting. |
|
||||||
*/ |
|
||||||
int avpriv_atomic_int_add_and_fetch(volatile int *ptr, int inc); |
|
||||||
|
|
||||||
/**
|
|
||||||
* Atomic pointer compare and swap. |
|
||||||
* |
|
||||||
* @param ptr pointer to the pointer to operate on |
|
||||||
* @param oldval do the swap if the current value of *ptr equals to oldval |
|
||||||
* @param newval value to replace *ptr with |
|
||||||
* @return the value of *ptr before comparison |
|
||||||
*/ |
|
||||||
void *avpriv_atomic_ptr_cas(void * volatile *ptr, void *oldval, void *newval); |
|
||||||
|
|
||||||
#endif /* HAVE_ATOMICS_NATIVE */ |
|
||||||
|
|
||||||
#endif /* AVUTIL_ATOMIC_H */ |
|
||||||
@ -1,61 +0,0 @@ |
|||||||
/*
|
|
||||||
* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com> |
|
||||||
* |
|
||||||
* This file is part of Libav. |
|
||||||
* |
|
||||||
* Libav is free software; you can redistribute it and/or |
|
||||||
* modify it under the terms of the GNU Lesser General Public |
|
||||||
* License as published by the Free Software Foundation; either |
|
||||||
* version 2.1 of the License, or (at your option) any later version. |
|
||||||
* |
|
||||||
* Libav 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 |
|
||||||
* Lesser General Public License for more details. |
|
||||||
* |
|
||||||
* You should have received a copy of the GNU Lesser General Public |
|
||||||
* License along with Libav; if not, write to the Free Software |
|
||||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
||||||
*/ |
|
||||||
|
|
||||||
#ifndef AVUTIL_ATOMIC_GCC_H |
|
||||||
#define AVUTIL_ATOMIC_GCC_H |
|
||||||
|
|
||||||
#include <stdint.h> |
|
||||||
|
|
||||||
#include "atomic.h" |
|
||||||
|
|
||||||
#define avpriv_atomic_int_get atomic_int_get_gcc |
|
||||||
static inline int atomic_int_get_gcc(volatile int *ptr) |
|
||||||
{ |
|
||||||
__sync_synchronize(); |
|
||||||
return *ptr; |
|
||||||
} |
|
||||||
|
|
||||||
#define avpriv_atomic_int_set atomic_int_set_gcc |
|
||||||
static inline void atomic_int_set_gcc(volatile int *ptr, int val) |
|
||||||
{ |
|
||||||
*ptr = val; |
|
||||||
__sync_synchronize(); |
|
||||||
} |
|
||||||
|
|
||||||
#define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_gcc |
|
||||||
static inline int atomic_int_add_and_fetch_gcc(volatile int *ptr, int inc) |
|
||||||
{ |
|
||||||
return __sync_add_and_fetch(ptr, inc); |
|
||||||
} |
|
||||||
|
|
||||||
#define avpriv_atomic_ptr_cas atomic_ptr_cas_gcc |
|
||||||
static inline void *atomic_ptr_cas_gcc(void * volatile *ptr, |
|
||||||
void *oldval, void *newval) |
|
||||||
{ |
|
||||||
#ifdef __ARMCC_VERSION |
|
||||||
// armcc will throw an error if ptr is not an integer type
|
|
||||||
volatile uintptr_t *tmp = (volatile uintptr_t*)ptr; |
|
||||||
return (void*)__sync_val_compare_and_swap(tmp, oldval, newval); |
|
||||||
#else |
|
||||||
return __sync_val_compare_and_swap(ptr, oldval, newval); |
|
||||||
#endif |
|
||||||
} |
|
||||||
|
|
||||||
#endif /* AVUTIL_ATOMIC_GCC_H */ |
|
||||||
@ -1,54 +0,0 @@ |
|||||||
/*
|
|
||||||
* This file is part of Libav. |
|
||||||
* |
|
||||||
* Libav is free software; you can redistribute it and/or |
|
||||||
* modify it under the terms of the GNU Lesser General Public |
|
||||||
* License as published by the Free Software Foundation; either |
|
||||||
* version 2.1 of the License, or (at your option) any later version. |
|
||||||
* |
|
||||||
* Libav 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 |
|
||||||
* Lesser General Public License for more details. |
|
||||||
* |
|
||||||
* You should have received a copy of the GNU Lesser General Public |
|
||||||
* License along with Libav; if not, write to the Free Software |
|
||||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
||||||
*/ |
|
||||||
|
|
||||||
#ifndef AVUTIL_ATOMIC_SUNCC_H |
|
||||||
#define AVUTIL_ATOMIC_SUNCC_H |
|
||||||
|
|
||||||
#include <atomic.h> |
|
||||||
#include <mbarrier.h> |
|
||||||
|
|
||||||
#include "atomic.h" |
|
||||||
|
|
||||||
#define avpriv_atomic_int_get atomic_int_get_suncc |
|
||||||
static inline int atomic_int_get_suncc(volatile int *ptr) |
|
||||||
{ |
|
||||||
__machine_rw_barrier(); |
|
||||||
return *ptr; |
|
||||||
} |
|
||||||
|
|
||||||
#define avpriv_atomic_int_set atomic_int_set_suncc |
|
||||||
static inline void atomic_int_set_suncc(volatile int *ptr, int val) |
|
||||||
{ |
|
||||||
*ptr = val; |
|
||||||
__machine_rw_barrier(); |
|
||||||
} |
|
||||||
|
|
||||||
#define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_suncc |
|
||||||
static inline int atomic_int_add_and_fetch_suncc(volatile int *ptr, int inc) |
|
||||||
{ |
|
||||||
return atomic_add_int_nv(ptr, inc); |
|
||||||
} |
|
||||||
|
|
||||||
#define avpriv_atomic_ptr_cas atomic_ptr_cas_suncc |
|
||||||
static inline void *atomic_ptr_cas_suncc(void * volatile *ptr, |
|
||||||
void *oldval, void *newval) |
|
||||||
{ |
|
||||||
return atomic_cas_ptr(ptr, oldval, newval); |
|
||||||
} |
|
||||||
|
|
||||||
#endif /* AVUTIL_ATOMIC_SUNCC_H */ |
|
||||||
@ -1,53 +0,0 @@ |
|||||||
/*
|
|
||||||
* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com> |
|
||||||
* |
|
||||||
* This file is part of Libav. |
|
||||||
* |
|
||||||
* Libav is free software; you can redistribute it and/or |
|
||||||
* modify it under the terms of the GNU Lesser General Public |
|
||||||
* License as published by the Free Software Foundation; either |
|
||||||
* version 2.1 of the License, or (at your option) any later version. |
|
||||||
* |
|
||||||
* Libav 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 |
|
||||||
* Lesser General Public License for more details. |
|
||||||
* |
|
||||||
* You should have received a copy of the GNU Lesser General Public |
|
||||||
* License along with Libav; if not, write to the Free Software |
|
||||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
||||||
*/ |
|
||||||
|
|
||||||
#ifndef AVUTIL_ATOMIC_WIN32_H |
|
||||||
#define AVUTIL_ATOMIC_WIN32_H |
|
||||||
|
|
||||||
#include <windows.h> |
|
||||||
|
|
||||||
#define avpriv_atomic_int_get atomic_int_get_win32 |
|
||||||
static inline int atomic_int_get_win32(volatile int *ptr) |
|
||||||
{ |
|
||||||
MemoryBarrier(); |
|
||||||
return *ptr; |
|
||||||
} |
|
||||||
|
|
||||||
#define avpriv_atomic_int_set atomic_int_set_win32 |
|
||||||
static inline void atomic_int_set_win32(volatile int *ptr, int val) |
|
||||||
{ |
|
||||||
*ptr = val; |
|
||||||
MemoryBarrier(); |
|
||||||
} |
|
||||||
|
|
||||||
#define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_win32 |
|
||||||
static inline int atomic_int_add_and_fetch_win32(volatile int *ptr, int inc) |
|
||||||
{ |
|
||||||
return inc + InterlockedExchangeAdd(ptr, inc); |
|
||||||
} |
|
||||||
|
|
||||||
#define avpriv_atomic_ptr_cas atomic_ptr_cas_win32 |
|
||||||
static inline void *atomic_ptr_cas_win32(void * volatile *ptr, |
|
||||||
void *oldval, void *newval) |
|
||||||
{ |
|
||||||
return InterlockedCompareExchangePointer(ptr, newval, oldval); |
|
||||||
} |
|
||||||
|
|
||||||
#endif /* AVUTIL_ATOMIC_WIN32_H */ |
|
||||||
@ -1,35 +0,0 @@ |
|||||||
/*
|
|
||||||
* This file is part of Libav. |
|
||||||
* |
|
||||||
* Libav is free software; you can redistribute it and/or |
|
||||||
* modify it under the terms of the GNU Lesser General Public |
|
||||||
* License as published by the Free Software Foundation; either |
|
||||||
* version 2.1 of the License, or (at your option) any later version. |
|
||||||
* |
|
||||||
* Libav 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 |
|
||||||
* Lesser General Public License for more details. |
|
||||||
* |
|
||||||
* You should have received a copy of the GNU Lesser General Public |
|
||||||
* License along with Libav; if not, write to the Free Software |
|
||||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
||||||
*/ |
|
||||||
|
|
||||||
#include <assert.h> |
|
||||||
|
|
||||||
#include "libavutil/atomic.h" |
|
||||||
|
|
||||||
int main(void) |
|
||||||
{ |
|
||||||
volatile int val = 1; |
|
||||||
int res; |
|
||||||
|
|
||||||
res = avpriv_atomic_int_add_and_fetch(&val, 1); |
|
||||||
assert(res == 2); |
|
||||||
avpriv_atomic_int_set(&val, 3); |
|
||||||
res = avpriv_atomic_int_get(&val); |
|
||||||
assert(res == 3); |
|
||||||
|
|
||||||
return 0; |
|
||||||
} |
|
||||||
Loading…
Reference in new issue