Addresses failures with the following, in some files:
-Wshorten-64-to-32
-Wimplicit-int-conversion
-Wsign-compare
-Wsign-conversion
-Wtautological-unsigned-zero-compare
(This specific CL focuses on .cc files in */internal/.)
Bug: chromium:1292951
PiperOrigin-RevId: 473868797
Change-Id: Ibe0b76e33f9e001d59862beaac54fb47bacd39b2
Addresses failures with the following, in some files:
-Wshorten-64-to-32
-Wimplicit-int-conversion
-Wsign-compare
-Wsign-conversion
-Wtautological-unsigned-zero-compare
(This specific CL focuses on .cc files in */internal/.)
Bug: chromium:1292951
PiperOrigin-RevId: 471561809
Change-Id: I7abd6d83706f5ca135f1ce3458192a498a6280b9
Addresses failures with the following, in some files:
-Wshorten-64-to-32
-Wimplicit-int-conversion
-Wsign-compare
-Wsign-conversion
-Wtautological-unsigned-zero-compare
(This specific CL focuses on .cc files in */internal/.)
Bug: chromium:1292951
PiperOrigin-RevId: 471549854
Change-Id: Id685d0e4666212926f4e001b8ef4930b6a33a4cc
Addresses failures with the following, in some files:
-Wshorten-64-to-32
-Wimplicit-int-conversion
-Wsign-compare
-Wsign-conversion
-Wtautological-unsigned-zero-compare
(This specific CL focuses on .h and win32 .inc files.)
Bug: chromium:1292951
PiperOrigin-RevId: 463835431
Change-Id: If8e5f7f651d5cd96035e23e4623bdb08a7fedabe
This ensures that emmintrin.h is included with clang-cl. Otherwise, errors like
this occur:
.../absl/container/internal/raw_hash_set.h(536,8): error: unknown type name '__m128i'
inline __m128i _mm_cmpgt_epi8_fixed(__m128i a, __m128i b) {
This aligns the include ifdef guards and the guards that use the provided APIs.
The includes are also reordered, so they appear after the config header which
provides the internal macro values.
PiperOrigin-RevId: 456530271
Change-Id: I86dfd0022fd06fe7aa132138ec4d1bd14a86ba84
https://pastebin.com/CmnzwUFN
The key idea is to avoid using 16 byte NEON and use 8 byte NEON which has lower latency for BitMask::Match. Even though 16 byte NEON achieves higher throughput, in SwissMap it's very important to catch these Matches with low latency as probing on average happens at most once.
I also introduced NonIterableMask as ARM has really great cbnz instructions and additional AND on scalar mask had 1 extra latency cycle
PiperOrigin-RevId: 453216147
Change-Id: I842c50d323954f8383ae156491232ced55aacb78
Benchmarks: https://pastebin.com/tZ7dr67W. Works well especially on smaller ranges.
After a week on spending optimizing NEON SIMD where I almost managed to make hash tables work with NEON SIMD without performance hits (still 1 cycle to optimize and I gave up a little), I found an interesting optimization for aarch64 to use cls instruction (count leading sign bits).
The loop has a property that ctrl_ group is not matched against count when the first slot is empty or deleted.
```
void skip_empty_or_deleted() {
while (IsEmptyOrDeleted(*ctrl_)) {
uint32_t shift = Group{ctrl_}.CountLeadingEmptyOrDeleted();
ctrl_ += shift;
slot_ += shift;
}
...
}
```
However, `kEmpty` and `kDeleted` have format of `1xxxxxx0` and `~ctrl & (ctrl >> 7)` always sets the lowest bit to 1.
In naive implementation, it does +1 to start counting zero bits, however, in aarch64 we may start counting one bits immediately. This saves 1 cycle and 5% of iteration performance.
Then it becomes hard to find a supported and sustainable C++ version of it.
`__clsll` is not supported by GCC and was supported only since clang 8, `__builtin_clrsb` is not producing optimal codegen for clang. `__rbit` is not supported by GCC and there is no intrinsic to do that, however, in clang we have `__builtin_bitreverse{32,64}`. For now I decided to enable this only for clang, only if they have appropriate builtins.
PiperOrigin-RevId: 451168570
Change-Id: I7e9256a60aecdc88ced4e6eb15ebc257281b6664
Add a new (internal) feature test macro to detect whether the wrappers are no-ops on a given platform.
Note that one-arg __builtin_prefetch(x) is equivalent to __builtin_prefetch(x, 0, 3), per `man BUILTIN_PREFETCH(3)` and gcc docs.
PiperOrigin-RevId: 449508660
Change-Id: I144e750205eec0c956d8dd62bc72e10bdb87c4f7
The old analysis viewed it as birthday attack, which asks how often
there are multiple values in the probe same probe sequence with the
same H2. In their own words, this analysis "breaks down" at around `n
= 12`.
Instead we can answer a simpler question, which is, if a probe
sequence examines `k` objects that are not what we are looking for,
what's the number of calls `==`? The expectation is simply `k/128`.
PiperOrigin-RevId: 446518063
Change-Id: Ie879bd4f6c97979822bc9d550b9e2503b1418c78
--
fb671efb2a70f452f17a884b17cf18817b977a8f by Abseil Team <absl-team@google.com>:
Remove extra semicolon in ABSL_INTERNAL_ASSERT_IS_FULL macro
To fix compilation when empty statement warning is treated as error.
PiperOrigin-RevId: 438342663
Change-Id: I3067fbeffa2691888f37554e88f229f24fb55ecc
--
a58c9396f1d88d11347aed36ef2e1b633071363c by Martijn Vels <mvels@google.com>:
Fix kMaxHeight bounds to kMaxDepth for CordrepBtreeNavigator
Added unit test (confirmed failure mode with old code) and extra assertion in the implementation.
PiperOrigin-RevId: 438327463
Change-Id: I32242c86b0c879b8a42cb9a92075e537d588e09f
--
f348e85dbfc9187ef59085fa2b999374f1670338 by Jorge Gorbe Moya <jgorbe@google.com>:
Make the flags enum in `RefcountAndFlags` a named enum to workaround an lldb
issue (https://github.com/llvm/llvm-project/issues/54602).
PiperOrigin-RevId: 438146097
Change-Id: Ibc2ee26489d99de515a779a903b6458dd0befef7
--
a960a3e9fb2a2e3418f806178e73d8566b78bc85 by Gennadiy Rozental <rogeeff@google.com>:
Introduce support for std::optional<T>/absl::optional<T> flag types.
PiperOrigin-RevId: 438129500
Change-Id: I3d925c0a7f9ce9f857277fac3b0bf664ccd3a95c
GitOrigin-RevId: fb671efb2a70f452f17a884b17cf18817b977a8f
--
291f7ef542f73e4801ab5108014bc02344ef31df by Derek Mauro <dmauro@google.com>:
Internal change
PiperOrigin-RevId: 437835981
Change-Id: I42fd92e74903894533ac9984d7f622e3ba20f468
--
2e8caf1a57c50b518e05b4bca48e4fe1bb19af82 by Andy Getzendanner <durandal@google.com>:
Internal change
PiperOrigin-RevId: 437832673
Change-Id: I61b35089418d01a54cecf161b254b68252bebff3
--
b927482ccc399f7e337b60582988b914d9946e4e by Derek Mauro <dmauro@google.com>:
Simplify endian intrinsics for modern compilers
All modern compilers have either __builtin_bswapN (gcc, clang) or
_byteswap_TYPE (MSVC). The other intrinsic definitions are no longer
necessary.
PiperOrigin-RevId: 437772295
Change-Id: Ifb3d88ba24b9097f87ceb202272b36d2f5e5117f
--
b6782a2247a16d5c14706a74ec577c19963d9f97 by Derek Mauro <dmauro@google.com>:
Internal change
PiperOrigin-RevId: 437373174
Change-Id: I0f77e1780dee90d7a3c32a08d96c4aeb624a57b4
--
a53e0c724e37b0b01515a99bd25394b8e21ffdfc by Derek Mauro <dmauro@google.com>:
Unify detection of SSE2 and SSSE3 instruction sets and
include the proper headers
Fix the intrinsic implementation of FastHexToBufferZeroPad16 in
numbers.h which only relies on SSSE3, not SSE 4.2.
https://godbolt.org/z/Pf5bn1Yv9Closes#639
PiperOrigin-RevId: 437286940
Change-Id: Ic97948399b61b91e9c0bccd09313b795b904d714
--
f173f597cb2a75ef2a989f45a496334b85e6f40d by Abseil Team <absl-team@google.com>:
Change assertion function to enable clearer error messages.
PiperOrigin-RevId: 437227057
Change-Id: If420d2f63b51feef6648762f344d5be012cd9c85
GitOrigin-RevId: 291f7ef542f73e4801ab5108014bc02344ef31df
--
8c9dd24a6fbf9ed10ae81f9fa0bc2168558a9700 by Abseil Team <absl-team@google.com>:
Improve WebAssembly detection when using Bazel.
Unfortunately, the --cpu values are not standardized, and both
--cpu=wasm and --cpu=wasm32 are used in the wild. Most notably,
Emscripten's Bazel rules use --cpu=wasm, which was missing.
While there, add support for @platforms//cpu:{wasm32,wasm64}.
This change adds a dependency on @bazel_skylib, which requires
adding the following http_archive() rule to the WORKSPACE file:
http_archive(
name = "bazel_skylib",
urls = ["https://github.com/bazelbuild/bazel-skylib/releases/download/1.2.1/bazel-skylib-1.2.1.tar.gz"],
sha256 = "f7be3474d42aae265405a592bb7da8e171919d74c16f082a5457840f06054728",
)
PiperOrigin-RevId: 436815546
Change-Id: I4e1946070c6964abb12259f25a546f2d24e0992a
--
59514589043d9b0734a01f7aa7bc354f5b495eab by Abseil Team <absl-team@google.com>:
Fix some typos that slipped through.
PiperOrigin-RevId: 436777566
Change-Id: Ibf5c54e2671c749dc87d2bd5d36dcd220ce347d4
GitOrigin-RevId: 8c9dd24a6fbf9ed10ae81f9fa0bc2168558a9700
--
7473df9e4922c589f6b27cf546aad097381ae552 by Martijn Vels <mvels@google.com>:
Make ABSL_ASSUME publicly available
PiperOrigin-RevId: 430540224
Change-Id: I760e2d86e3a0b676cd2a6d26e0225a77381e948f
--
c83e38bc421f715b3c1e20150c2f1ffe8e633028 by Abseil Team <absl-team@google.com>:
Alias absl::bind_front to std::bind_front if available
This avoids ambiguity between the two when enabling C++20.
PiperOrigin-RevId: 430486679
GitOrigin-RevId: 7473df9e4922c589f6b27cf546aad097381ae552
Change-Id: I1e9bba09a8946480ce10ddd28e86b6c86191d38c
--
4409b08e103d6e7041d18a4d431290cafe3650cf by Derek Mauro <dmauro@google.com>:
Workaround NVCC compile error in StringConstant
Based on a patch in TensorFlow:
da83132aba/third_party/absl/com_google_absl_fix_mac_and_nvcc_build.patch (L262-L282)Fixes#1105
PiperOrigin-RevId: 426156316
--
25db16567ffc5400dfaa30b567398ede84729687 by Abseil Team <absl-team@google.com>:
Only look for Elf64_Auxinfo on 64-bit FreeBSD.
PiperOrigin-RevId: 426132251
--
2e73c3d9df59b2b769d2b8dca97f0ca5c512c72a by Abseil Team <absl-team@google.com>:
Add a problem hint to the error message when dereferencing the end() iterator.
PiperOrigin-RevId: 426120394
--
6befbf89c47963656b9e8151166ab4c8446d4785 by Martijn Vels <mvels@google.com>:
Make Cord Btree the default and remove opt out machinery
This change makes btree the default Cord format and removes the machinery to opt out. Subsequent changes will remove the 'true' constant evaluation and effectively cleanup all old code and references to CONCAT.
PiperOrigin-RevId: 426119728
--
f6a0a664029d61811d90bd484f4eefa0400b5dd4 by Abseil Team <absl-team@google.com>:
Mark Notification::HasBeenNotified as ABSL_MUST_USE_RESULT
PiperOrigin-RevId: 425927033
GitOrigin-RevId: 4409b08e103d6e7041d18a4d431290cafe3650cf
Change-Id: I86f1052c63c13c6486baf4108de2554f162f9c40
--
487c7a754a3b93bc0f9de14bdced48007a96ae55 by Greg Falcon <gfalcon@google.com>:
Add support for absl::Hash to hash unordered containers. These can now be hashed directly, as well as combined in AbslHashValue implementations.
This also adds a new method, `H::combine_unordered()`, to the public AbslHashValue hash state API. This allows users to implement hash specializations for their own unordered collection types.
A traits class, `H::is_hashable<T>`, is also added to the hash state API. H::is_hashable<T>::value reflects whether type T is considered hashable by the AbslHashValue framework. This allows users to properly SFINAE templated versions of AbslHashValue. (The AbslHashValue implementation added to raw_hash_set shows an example of its use.)
PiperOrigin-RevId: 422856706
GitOrigin-RevId: 487c7a754a3b93bc0f9de14bdced48007a96ae55
Change-Id: Id31fd4ccba282f8c9ae6fcee6ae0ad0f7879f456
--
04e8fdf6a37d31f9364ca0f70bf663ee972481c6 by Abseil Team <absl-team@google.com>:
Another implicit sign conversion found and removed.
PiperOrigin-RevId: 419718762
--
dbb6bca7d3cfa9ce79e70d0ed3d0354a4e3a0983 by Abseil Team <absl-team@google.com>:
Fix sign conversions so that absl/status/status.h can compile with -Wconversion -Wsign-compare
PiperOrigin-RevId: 419658075
GitOrigin-RevId: 04e8fdf6a37d31f9364ca0f70bf663ee972481c6
Change-Id: I18441488cc84f573c2818ee241c387e1953d5105
--
07240ca7822d007cdcc79f2c40bd58b2c2010348 by Abseil Team <absl-team@google.com>:
Correct the comment from "AlphaNum" to "Arg".
PiperOrigin-RevId: 416139192
--
adcba4a6b3763626e1db7b1e8c108b3114903557 by Martijn Vels <mvels@google.com>:
Fix NewExternalRep() to require data being non-empty, and remove nullptr return.
PiperOrigin-RevId: 416135865
--
c0d14cd918fb16f15d1d84de9284b5c5ecc1f8f2 by Abseil Team <absl-team@google.com>:
Fix doc comment for absl::ascii_isprint().
The comment was incorrectly saying that it includes all whitespace.
It doesn't; the only whitespace char it includes is ' '.
PiperOrigin-RevId: 416112524
--
d83327800159c07002b6865e21232a12463e02dd by Abseil Team <absl-team@google.com>:
Internal change
PiperOrigin-RevId: 416099978
--
baf11e9ca42ca9140cdbf8075f971db8d65b1195 by Ilya Tokar <tokarip@google.com>:
Prevent compiler from optimizing Group_Match* benchmarks away.
Currently we benchmark single store of precomputed value.
Not all affected benchmarks show performance changes:
BM_Group_Match 0.53ns ± 1% 0.53ns ± 0% -0.42% (p=0.038 n=10+10)
BM_Group_MatchEmpty 0.26ns ± 1% 0.26ns ± 1% ~ (p=1.000 n=10+10)
BM_Group_MatchEmptyOrDeleted 0.26ns ± 1% 0.26ns ± 1% ~ (p=0.121 n=10+10)
BM_Group_CountLeadingEmptyOrDeleted 0.26ns ± 1% 0.45ns ± 0% +70.05% (p=0.000 n=10+8)
BM_Group_MatchFirstEmptyOrDeleted 0.26ns ± 0% 0.44ns ± 1% +65.91% (p=0.000 n=8+9)
But inspecting the generated code shows the difference,
e. g. BM_Group_MatchFirstEmptyOrDeleted
Before:
add $0xffffffffffffffff,%rbx
jne 30
After:
pcmpeqd %xmm0,%xmm0
pcmpgtb -0x30(%rbp),%xmm0
pmovmskb %xmm0,%eax
add: 0x23$0xffffffffffffffff,%rbx
jne 40
PiperOrigin-RevId: 416083515
--
122fbff893dc4571b3e75e4b241eb4495b925610 by Abseil Team <absl-team@google.com>:
Put namespace guard in ABSL_DECLARE_FLAG to make declaring a flag in a namespace a compiler error instead of a linker error.
PiperOrigin-RevId: 416036072
--
020fd8a20f5fa319e948846e003391fcb9e03868 by Ilya Tokar <tokarip@google.com>:
Make Cord::InlineRep::set_data unconditionally zero out memory.
Currently there is a single case where we don't zero out memory
as an optimization. Unconditional zeroing doesn't show any changes
in benchmarks, except for the unrelated improvement:
BM_CordPartialCopyToCord/1M/1 12.6ns ± 4% 12.6ns ± 4% ~ (p=0.857 n=16+19)
BM_CordPartialCopyToCord/1M/128 44.9ns ± 7% 45.0ns ± 3% ~ (p=0.468 n=18+17)
BM_CordPartialCopyToCord/1M/1k 64.5ns ± 4% 61.4ns ± 4% -4.82% (p=0.000 n=19+17)
BM_CordPartialCopyToCord/1M/8k 139ns ± 3% 128ns ±15% -7.76% (p=0.009 n=17+20)
BM_CordPartialCopyToCord/1M/16k 193ns ± 6% 168ns ± 6% -13.17% (p=0.000 n=17+17)
BM_CordPartialCopyToCord/4M/16k 199ns ± 4% 177ns ± 4% -11.36% (p=0.000 n=17+18)
BM_CordPartialCopyToCord/4M/32k 275ns ± 3% 250ns ± 4% -9.00% (p=0.000 n=18+18)
BM_CordPartialCopyToCord/4M/64k 291ns ± 4% 266ns ± 5% -8.53% (p=0.000 n=18+16)
BM_CordPartialCopyToCord/4M/128k 322ns ± 5% 291ns ± 4% -9.43% (p=0.000 n=20+18)
BM_CordPartialCopyToCord/8M/32k 281ns ± 5% 251ns ± 4% -10.38% (p=0.000 n=20+16)
BM_CordPartialCopyToCord/8M/64k 293ns ± 6% 267ns ± 4% -8.87% (p=0.000 n=16+19)
BM_CordPartialCopyToCord/8M/128k 334ns ± 3% 305ns ± 2% -8.56% (p=0.000 n=17+16)
This is clearly an alignmnet effect since number of the executed instructions is the same:
M_CordPartialCopyToCord/1M/1 155 ± 0% 155 ± 0% ~ (all samples are equal)
BM_CordPartialCopyToCord/1M/128 446 ± 0% 446 ± 0% ~ (p=0.332 n=36+39)
BM_CordPartialCopyToCord/1M/1k 473 ± 0% 473 ± 0% ~ (p=0.969 n=40+40)
BM_CordPartialCopyToCord/1M/8k 808 ± 0% 808 ± 0% ~ (p=0.127 n=40+39)
BM_CordPartialCopyToCord/1M/16k 957 ± 0% 957 ± 0% ~ (p=0.532 n=40+40)
BM_CordPartialCopyToCord/4M/16k 952 ± 0% 952 ± 0% ~ (p=0.686 n=39+39)
BM_CordPartialCopyToCord/4M/32k 1.12k ± 0% 1.12k ± 0% ~ (p=0.690 n=40+40)
BM_CordPartialCopyToCord/4M/64k 1.23k ± 0% 1.23k ± 0% ~ (p=0.182 n=40+39)
BM_CordPartialCopyToCord/4M/128k 1.44k ± 0% 1.44k ± 0% ~ (p=0.711 n=40+40)
BM_CordPartialCopyToCord/8M/32k 1.12k ± 0% 1.12k ± 0% ~ (p=0.697 n=40+40)
BM_CordPartialCopyToCord/8M/64k 1.23k ± 0% 1.23k ± 0% +0.00% (p=0.049 n=40+40)
BM_CordPartialCopyToCord/8M/128k 1.44k ± 0% 1.44k ± 0% ~ (p=0.507 n=40+40)
This makes code simpler and doesn't regress performance.
PiperOrigin-RevId: 415560574
--
37305b2690b31682088749e4d62f40d7095bdc54 by Derek Mauro <dmauro@google.com>:
Internal change
PiperOrigin-RevId: 415558737
--
86aaed569b9e743c1eb813a5f48def978a793db3 by Martijn Vels <mvels@google.com>:
Internal change
PiperOrigin-RevId: 415515201
--
6cdb8786cdcb4fa0b8a4b72fc98940877d1fdeff by Abseil Team <absl-team@google.com>:
Update SubmitMutexProfileData to accept wait_cycles instead of wait_timestamp
PiperOrigin-RevId: 415360871
--
9f979d307aa16ad09f214e04876cbe84395c0901 by Abseil Team <absl-team@google.com>:
absl::flat_hash_set compiles with -Wconversion -Wsign-compare
PiperOrigin-RevId: 415357498
--
9eceb14174708f15e61259d449b214a8a4c7f9e7 by Abseil Team <absl-team@google.com>:
Fix AddressIsReadable for the corner case of (aligned) addr == NULL.
PiperOrigin-RevId: 415307792
--
1a39ffe55898375e2d7f88c17c99db5a1b95b313 by Martijn Vels <mvels@google.com>:
Internal change
PiperOrigin-RevId: 415162872
--
64378549b110d5f5762185a5906c520fba70f0e7 by Abseil Team <absl-team@google.com>:
Fix a typo in the comments
PiperOrigin-RevId: 415088461
--
41aae8322e913b82710153c22b97c611fdb6e1fb by Abseil Team <absl-team@google.com>:
Switch from `connect` to `rt_sigreturn` -- the latter is much less problematic
for system call sandboxes.
PiperOrigin-RevId: 415073965
--
870c5e3388b6a35611bff538626fe7a1c8c87171 by Abseil Team <absl-team@google.com>:
Add ABSL_HAVE_HWADDRESS_SANITIZER and ABSL_HAVE_LEAK_SANITIZER
PiperOrigin-RevId: 414871189
--
f213ed60a66b58da7ac40555adfb1d529ff0a4db by Derek Mauro <dmauro@google.com>:
Remove reference to __SANITIZE_MEMORY__, which does not exist
It appears to have been copied by pattern matching from the ASAN/TSAN
code blocks.
f47662204d/gcc/cppbuiltin.c (L79-L126)
PiperOrigin-RevId: 414806587
--
b152891e73ab515f397ceb53f66c8ee2f33863ea by Abseil Team <absl-team@google.com>:
Rollback previous commit: SYS_open is not defined in certain environments.
PiperOrigin-RevId: 414521820
--
5a1cbb282331023902e1374dd0d920c4effbe47f by Abseil Team <absl-team@google.com>:
Use syscall(SYS_open, ...) instead of open() to avoid possible symbol
interposition.
Also add some warning notes.
PiperOrigin-RevId: 414508186
--
1824d6593612710aafdc599a89b0adced7d787f6 by Abseil Team <absl-team@google.com>:
Correct aarch64 macro check
The macro is __aarch64__, not __arch64__.
PiperOrigin-RevId: 414446225
--
a1536a57b64dfd53945d33a01cfc08b18c99c97b by Abseil Team <absl-team@google.com>:
Fix backwards comment in the last commit.
PiperOrigin-RevId: 414281214
--
11ac021ba779513667a31cf2563ddafc57d6d913 by Abseil Team <absl-team@google.com>:
AddressIsReadable() didn't work correctly on ARM when the given pointer was
misaligned at the end of the page.
Fix that by aligning the pointer on an 8-byte boundary before checking it.
PiperOrigin-RevId: 414203863
GitOrigin-RevId: 07240ca7822d007cdcc79f2c40bd58b2c2010348
Change-Id: If5f129194d59f5c9e5d84efd8cd9e17a70e072ab
--
e2a571b818faaec4185426a8cf71fd2970674423 by Matt Kulukundis <kfm@google.com>:
Fix missed use of old RTTI macro
PiperOrigin-RevId: 413239579
--
e3c15a3fe0a4e44d6e08d69ad912b2245a403bd6 by Derek Mauro <dmauro@google.com>:
Makes erase_if return the number of erased elements for compatibility
with C++20
https://en.cppreference.com/w/cpp/container/unordered_map/erase_if
This may technically be an API break, but no actual breaks were found
in Google code. Fixes to open source code should be trivial.
Closes#1065
PiperOrigin-RevId: 413204392
--
c1fb1ddbc2def3f3d177e5b80b9934bdbb7b16fc by Matt Kulukundis <kfm@google.com>:
Consolidate to a single HAS_RTTI macro
PiperOrigin-RevId: 413169336
GitOrigin-RevId: e2a571b818faaec4185426a8cf71fd2970674423
Change-Id: I74b78ebd5fc172e3f5fcbd13a58cf53f7b250ae9
--
05a099a580753f8e96cee38572e94dcdc079361b by Abseil Team <absl-team@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 405966217
--
c6b81e9ebc183d8389f14ecd091c8bad08cfe0aa by Abseil Team <absl-team@google.com>:
Add `inline_element_size` to hashtablez (so that we can compute the weighted load factors properly e.g., in b/187896534).
PiperOrigin-RevId: 405917711
--
3e3673de4e54e4142c54b09e1644dfa3de4bb296 by Abseil Team <absl-team@google.com>:
align indent of code comment in mutex.h
PiperOrigin-RevId: 405871997
--
2248301a5b14f8d2be5b2e9088f3528a353ea491 by Derek Mauro <dmauro@google.com>:
Internal change
PiperOrigin-RevId: 405639236
--
bc7d3c56fdad3dde4b89324af142529f2afe5f1b by Abseil Team <absl-team@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 405508045
--
66472387276ef02505d99195747be862768bb35b by Laramie Leavitt <lar@google.com>:
Also use uint8_t golden values in randen_test.cc
This makes randen_test, randen_slow_test, and randen_hwaes_test essentially
identical, as is the intent.
PiperOrigin-RevId: 405484423
GitOrigin-RevId: 05a099a580753f8e96cee38572e94dcdc079361b
Change-Id: I3dd5b0cfdb98d6e1ab02266194ba67d15428c2f8
--
58affd6378c47993f5408f7b8a8863fa5bcc2c47 by Derek Mauro <dmauro@google.com>:
Internal change
PiperOrigin-RevId: 403120541
--
27dc5d5f87bca6254585cca69058c14e0a2f3ce6 by Chris Kennelly <ckennelly@google.com>:
Prefetch while hashing.
While we may not need to access the cacheline *ctrl_ is on once we've computed the hash, we can begin to resolve the TLB required for the hashtable's heap allocation simultaneously with computing the hash value for the key.
PiperOrigin-RevId: 402954725
GitOrigin-RevId: 58affd6378c47993f5408f7b8a8863fa5bcc2c47
Change-Id: Id04297de823ad5c5a867c46065fa3a9ef0ada3dd
--
d56207f5535c3aad1624e33d20777ea6e66f51a7 by Abseil Team <absl-team@google.com>:
Internal change
PiperOrigin-RevId: 397830482
--
7f7ff3e88e0d3cd61d63da477b2a08e61a1aeea2 by Evan Brown <ezb@google.com>:
Update implementation details comment in raw_hash_set to include information about the heap allocation's layout.
PiperOrigin-RevId: 397786239
--
fde783b12a79ae8d587d1027bc8736dff6844897 by Abseil Team <absl-team@google.com>:
Add comments on #endif to make nesting clearer
PiperOrigin-RevId: 397684219
GitOrigin-RevId: d56207f5535c3aad1624e33d20777ea6e66f51a7
Change-Id: I43dc2b5c982f1ef2b21f82b6133c49c428baf223
--
3794fe8db7a8e5a17945a8d6e198cde1db1fed7d by Chris Kennelly <ckennelly@google.com>:
Record maximum reserve or rehash argument in hashtable statistics.
This makes it possible to identify containers that are large because of reserve
calls or ones that could have an opportunity for more precise capacity sizing.
PiperOrigin-RevId: 396851064
--
c3d247c08acfd45d8e19cfd8e6e841e16e38e23d by Abseil Team <absl-team@google.com>:
Remove extra semi-colon
PiperOrigin-RevId: 396823800
GitOrigin-RevId: 3794fe8db7a8e5a17945a8d6e198cde1db1fed7d
Change-Id: I9f26407c2dc6b3dff04f6f3e249571dd8ab288c3
--
5d05c54a619a969da5b4b7f66a2af2d969dc7920 by Abseil Team <absl-team@google.com>:
Save not needed copies of the predicate in raw_hash_set's EraseIf.
PiperOrigin-RevId: 392706073
--
61ee9b808cd3c81dd10a600c8de5428d6a43cfeb by Abseil Team <absl-team@google.com>:
Save unnecessary copies of the iterator in raw_hash_set's EraseIf.
PiperOrigin-RevId: 392668288
GitOrigin-RevId: 5d05c54a619a969da5b4b7f66a2af2d969dc7920
Change-Id: I180dab2706841ce56f27cf6eabdad1106ebdcf73
--
04cb3b22497190170aa5b774e98080c5de2ba60b by Abseil Team <absl-team@google.com>:
Alternative bit mixer for LowLevelHash on ARM
LowLevelHash's bit-mixer is inefficient on ARM because it calculates a 128-bit product of two 64-bit numbers. On ARM, this requires a sequence of two instructions with a high combined latency and poor throughput. This change provides alternative bit-mixing code for ARM that uses only 64-bit arithmetic (multiplication, xor, and left-shifts) and speeds things up considerably.
The bit-mixing code for ARM was inspired by by Woothash[1] and xxh3[1]. Once I landed on a sequence of operations that provided good mixing, I used a test harness to search for the combination of shift / rotate factors that provided the best mixing, as indicated by SMHasher hash quality tests. The new mixing code passes 13 out of 15 of the hash quality test suites in SMHasher, with the two failures being in the noise range: e.g. 1 collision vs. zero expected in a keyset of ~8m keys.
[1]: https://github.com/tommyettinger/waterhash/blob/49f5cf0b63b9/woothash.h#L16-L20
[2]: https://github.com/Cyan4973/xxHash/blob/6853ddc36e46/xxhash.h#L3240-L3265
PiperOrigin-RevId: 391833008
--
17a4de1f9d623155c75b19285d414cd55a487cd6 by Saleem Abdulrasool <abdulras@google.com>:
debugging: add support for unwinding on RISCV Linux
This adds partial support for unwinding the RISCV call stack. It is largely
duplicated from the AArch64 support with alterations for the ELF RISCV psABI.
This covers RISCV64 and RISCV32, though not the ILP32E calling convention.
PiperOrigin-RevId: 391818522
--
32c93e449327b2cea32b32f6365e84b420fe1ed3 by Gennadiy Rozental <rogeeff@google.com>:
New storage for types smaller than 8 bytes.
Also adding new read interface for types smaller than or rqual to 8 bytes to avoid passing the pointer.
PiperOrigin-RevId: 391726822
--
e987ac08a7787801cbfc7d7c96649e97fa8cff1a by Abseil Team <absl-team@google.com>:
Extern template `find_first_non_full` to reduce linkage size for TU with single not inlined function.
PiperOrigin-RevId: 391718862
--
73af9bfcb5bf045089133e18bbd20eb5bb699172 by Gennadiy Rozental <rogeeff@google.com>:
Make most non-mutable most int128 methods and friend free functions constexpr.
Some functions are implemented offline (at least in some configurations) and can't be made constexpr. Mutable methods can't be made constexpr until we drop c++11 support.
Fixes#978
PiperOrigin-RevId: 391706535
GitOrigin-RevId: 04cb3b22497190170aa5b774e98080c5de2ba60b
Change-Id: If051fad5ff004e2e82fa53618fc04a6fe3d2d4be
--
228b5878d7a994656f383666cfaee34e33e0b09b by Abseil Team <absl-team@google.com>:
Add element_type typedef to match std::span<T>
PiperOrigin-RevId: 390186160
--
c91d96c88c60be793c525158f76dfcaa5e32d161 by Abseil Team <absl-team@google.com>:
Rollback change to only hide retired flags if human-readable output
is requested
PiperOrigin-RevId: 390183146
--
170192c10ef8d513de80f29298ce93eeccc3712c by Abseil Team <absl-team@google.com>:
Move alignas(16) before ABSL_CONST_INIT and ABSL_DLL.
PiperOrigin-RevId: 390182845
--
77a5ee5081c81cef625fac7bbcf993cc028b32ed by Evan Brown <ezb@google.com>:
Use simple SlotOffset and AllocSize logic instead of container_internal::Layout in order to save linker input size for non-opt and sanitizer builds.
In opt mode, all of this logic is inlined so we don't save linker input size in opt mode.
PiperOrigin-RevId: 389914594
GitOrigin-RevId: 228b5878d7a994656f383666cfaee34e33e0b09b
Change-Id: I3b904068687574931d8390071b322c0c3c083283
--
77cd6291781bc39e8472c706163d6951fe2ae573 by Derek Mauro <dmauro@google.com>:
absl::uint128: Use intrinsics for more operations when available
This change also inlines the division and modulus operators when
intrinsics are available for better code generation.
Fixes#987
PiperOrigin-RevId: 389895706
--
fa23339584599e07ebcb4d0a857e2553b017757c by Abseil Team <absl-team@google.com>:
only hide retired flags if human-readable output is requested
PiperOrigin-RevId: 389835452
--
f1111f2b88359d4b253d4d81681c8a488458a36e by Martijn Vels <mvels@google.com>:
Add helpers IsFlat(), IsExternal(), etc to improve readability
PiperOrigin-RevId: 389779333
--
785b8712261e41695ebeeb64b4317f93b37adc11 by Martijn Vels <mvels@google.com>:
Split off 'concat' and 'btree' RepMemoryUsageLeaf and RepMemoryUsageDataEdge
PiperOrigin-RevId: 389701120
--
5264bffebffc2b377bf7e18f0ce69a3ed38c6629 by CJ Johnson <johnsoncj@google.com>:
Eagerly destroy `Callback` in `absl::Cleanup`
PiperOrigin-RevId: 389678813
--
a05312f0668458e97c50ca932c8f974c1508ebf2 by Abseil Team <absl-team@google.com>:
Have one instance of empty_group per program, rather than one per translation unit.
https://stackoverflow.com/questions/185624/static-variables-in-an-inlined-function
PiperOrigin-RevId: 389185845
GitOrigin-RevId: 77cd6291781bc39e8472c706163d6951fe2ae573
Change-Id: Iac8d9cb27707a9562c831c77a552d1fb4bb0405f
--
69b5d0b2a5adb49a53e51f9da6848eaa484242fe by Derek Mauro <dmauro@google.com>:
Changes the absl::Duration factory functions to disallow types that
are convertible to int or double, instead requiring that the argument
itself is indeed an integer or a floating-point number. This will
prevent callers from passing arguments, such as std::atomic<T>.
This change is an API break. Information and a tool to fix issues
can be found at
https://abseil.io/docs/cpp/tools/upgrades/duration-conversions
PiperOrigin-RevId: 387153494
--
786063e438ab6a55ac4baa88ad4d20a8293be52a by Evan Brown <ezb@google.com>:
Make ctrl_t be an enum class.
This adds type safety, and also when strict aliasing is enabled, the compiler will know that control bytes can't alias non-control bytes.
Also make H2() return h2_t.
PiperOrigin-RevId: 387120717
--
7e537aabec1c255d6e7c9d21232c597c1c2077bf by Evan Brown <ezb@google.com>:
Add some missing `const` keywords to ctrl_t* function parameters.
PiperOrigin-RevId: 386976062
--
da53ac6d91cabd951e81dd0a145e1e52b918955f by Martijn Vels <mvels@google.com>:
Change Seek and InitOffset to return nullptr instead of assert / fail.
This makes it consistent with the rest of the API (Next, Previous, Skip) and hardens it against invariants that are harder (or less likey) to be upheld correctly by the caller.
PiperOrigin-RevId: 386963283
--
a4d1faac020d5025edf53ce81808e5db68da7d89 by Abseil Team <absl-team@google.com>:
PC / Backtrace / Symbolization for Emscripten.
PiperOrigin-RevId: 386957724
--
97f2c47d83ba9d3ac89e1f55bd06897686ffd063 by Martijn Vels <mvels@google.com>:
Fix static casts ([-Wimplicit-int-conversion])
PiperOrigin-RevId: 386951646
--
9530c795248543817cbc4013953baa09c35f5e1a by Abseil Team <absl-team@google.com>:
Fix incorrect header guard in cord_rep_btree_navigator.h
PiperOrigin-RevId: 386907904
--
90ce5872406df2b7f4c428683741dc13a572267e by Abseil Team <absl-team@google.com>:
Small grammar fixes for some StatusCode descriptions.
PiperOrigin-RevId: 386906217
--
b30a2fd777f12a04a4d512f37a34614b0d05ce99 by Derek Mauro <dmauro@google.com>:
Skip length checking when constructing absl::string_view from std::string.
The length check causes unnecessary code bloat.
PiperOrigin-RevId: 386857974
--
fa171536c359bfa2a1b80297e844519bb9ee7791 by Martijn Vels <mvels@google.com>:
Introduce CordRepBtreeNavigator
CordRepBtreeNavigator implements bi-directional navigation over all data edges stored inside a Cord Btree.
PiperOrigin-RevId: 386519102
GitOrigin-RevId: 69b5d0b2a5adb49a53e51f9da6848eaa484242fe
Change-Id: I1b35188d66133f8cb73d346bc5564aac4e0b3e80
--
50f4b71699a116d95b72e8cc4c0a98433fac51a0 by Evan Brown <ezb@google.com>:
Split reset_ctrl and set_ctrl out of raw_hash_set to avoid redundant memory accesses.
In the previous member functions, the compiler has to assume that `ctrl_` can alias `this` so it has to reload the other member variables unnecessarily.
Note: I tried adding __restrict__ to the ctrl arguments in the new functions, but it didn't result in further binary changes.
PiperOrigin-RevId: 386074009
--
47dfd737cc484492f9af9452e3a49adf81fe2ad2 by Abseil Team <absl-team@google.com>:
rehash_and_grow_if_necessary in-place more aggressively.
It previously resized too eagerly, resulting in low load factors.
PiperOrigin-RevId: 386008094
--
05321b4841ffe685813897a1ec86abc8fdf54093 by Derek Mauro <dmauro@google.com>:
Internal change
PiperOrigin-RevId: 385810140
GitOrigin-RevId: 50f4b71699a116d95b72e8cc4c0a98433fac51a0
Change-Id: I9c9571564adc1f9ccfa9b29d3aac238389397d1b
--
007ce045d5d38a727ededdb5bf06e64785fd73bd by Martijn Vels <mvels@google.com>:
Add `cord_enable_btree` feature flag (default false).
PiperOrigin-RevId: 383729939
--
98e7dc6a0407b0fd7b8713d883cdb3a766e0583d by Benjamin Barenblat <bbaren@google.com>:
Eliminate some byte swapping from randen_slow
Stop swapping bytes when serializing randen_slow’s Vector128 into and
out of memory. Instead, simply index different bytes in the AES round
function. This requires byte swapping the te{0..3} lookup tables, but it
produces an 8% speedup on my Xeon W-2135.
PiperOrigin-RevId: 383689402
--
180b6bf45049188840d439b16a28e6b968669340 by Evan Brown <ezb@google.com>:
Minor simplification in drop_deletes_without_resize() - save probe_offset outside the lambda.
Also, add some consts, avoid an auto, and use lambda capture by value instead of reference.
I realized that the compiler can already optimize this - https://godbolt.org/z/Wxd9c4TfK, but I think this way makes the code a bit clearer.
PiperOrigin-RevId: 383646658
--
781706a974c4dc1c0abbb6b801fca0550229e883 by Martijn Vels <mvels@google.com>:
Change storage to contain 3 bytes.
As per the comments in the code, this allows us to utilize all available space in CordRep that may otherwise be 'lost' in padding in derived clases. For the upcoming CordrepBtree class, we want a strong guarantee on having a 64 bytes aligned implementation.
PiperOrigin-RevId: 383633963
--
8fe22ecf92492fa6649938a2215934ebfe01c714 by Derek Mauro <dmauro@google.com>:
Remove reference to str_format_arg.h, which no longer exists
PiperOrigin-RevId: 383517865
--
79397f3b18f18c1e2d7aea993b687329d626ce64 by Benjamin Barenblat <bbaren@google.com>:
Use absl::uint128 for AES random number generator
Replace randen’s internal 128-bit integer struct, u64x2, with
absl::uint128. This eliminates some code and improves support for
big-endian platforms.
PiperOrigin-RevId: 383475671
GitOrigin-RevId: 007ce045d5d38a727ededdb5bf06e64785fd73bd
Change-Id: Ia9d9c40de557221f1744fb0d6d4d6ca7ac569070
--
2684e80d877b688b8d9e0af1b7acddbadc973152 by Evan Brown <ezb@google.com>:
Add an insert codegen function for raw_hash_set_benchmark.
PiperOrigin-RevId: 381052237
--
8394ef3071714a41484cb5b271cba0611d954a7a by Abseil Team <absl-team@google.com>:
Optimize raw_hash_set ctor for random-access iterators
PiperOrigin-RevId: 380832215
GitOrigin-RevId: 2684e80d877b688b8d9e0af1b7acddbadc973152
Change-Id: Icf7929fdfab50a1b26f3dc5505575363b4f5838d
--
f6d1ddef9a38e3fb8492181bf1a7a006b7f2145d by Abseil Team <absl-team@google.com>:
Update the implementation of `operator<<` in Status to use `ToString(StatusToStringMode::kWithEverything)`
PiperOrigin-RevId: 380740880
--
5f13b20c4b85c1c6e94b69c74f80f8f3f3941747 by Derek Mauro <dmauro@google.com>:
Update Docker images
This also disables the Clang/libstdc++/C++20 combo as it seems that
the latest libstdc++ is relying on C++20 Concepts to a greater extent
than Clang supports.
PiperOrigin-RevId: 380714572
--
f8f4dee12cfd02559bf741ad6b06f10ac0c48c73 by Abseil Team <absl-team@google.com>:
Fix shadow member warnings in randen_hwaes.cc
These happen when attempting to use abseil in github.com/google/benchmark. The project sets -Wshadow.
The warning is due to the name of the Vector128 ctor parameter. Using v instead, which I see used elsewhere (e.g. line 290)
PiperOrigin-RevId: 380704197
--
2e1a09e9cb1239485715acb4828d9b4799fcfbb5 by Tom Manshreck <shreck@google.com>:
Add more precise documentation for AbslParseFlag declarations in the Time API
PiperOrigin-RevId: 380649107
--
153e5f7a960c03e4161c03737a0ff18ba377ff73 by Evan Brown <ezb@google.com>:
Make the number of control bytes a constant.
We use a constexpr function because we need to support C++11, which doesn't have inline variables.
The motivation is to avoid future bugs where the number changes and we forget to update all the places it's used.
This CL should be a no-op.
PiperOrigin-RevId: 380253975
GitOrigin-RevId: f6d1ddef9a38e3fb8492181bf1a7a006b7f2145d
Change-Id: Id584138f898bf3ebef95fabcf48e41098c4db954
--
b1fc72630aaa81c8395c3b22ba267d938fe29a2e by Derek Mauro <dmauro@google.com>:
Fix -Wdeprecated-copy warnings from Clang 13.
Example:
error: definition of implicit copy assignment operator for 'UDT' is deprecated because it has a user-declared copy constructor [-Werror,-Wdeprecated-copy]
PiperOrigin-RevId: 380058303
--
0422744812b1a2010d9eea5b17fbe89f3441b66b by Evan Brown <ezb@google.com>:
Change the "full table!" asserts in raw_hash_set to use `<= capacity` instead of `< capacity`.
If we add support for non-power-of-two-minus-one capacities, this is the correct thing to assert. For example, consider: Group::kWidth = 8, capacity_ = 8, ctrl_ = {kEmpty, 1, 2, 3, 4, 5, 6, 7, kSentinel, kEmpty, 1, 2, 3, 4, 5, 6}. In this case, if we do an unsuccessful lookup with H2 mapping to slot 1, then the first Group will contain {1, 2, 3, 4, 5, 6, 7, kSentinel} so we need to continue to the second Group (at which point seq.index() == 8 == capacity_) to find a kEmpty.
Note: this is a no-op change for now since we never have `capacity % Group::kWidth == 0`.
PiperOrigin-RevId: 380033480
--
40628c34d540356de65fabb16c1439c0ec7a0764 by Abseil Team <absl-team@google.com>:
Drop out-of-date documentation about `absl::FixedArray`'s allocator support
PiperOrigin-RevId: 379811653
--
e7ad047863ae55c9b7aec0753cfc527a4ea614bc by Evan Brown <ezb@google.com>:
Fix a bug in ConvertDeletedToEmptyAndFullToDeleted in which we were copying 1 more cloned control byte than actually exists.
When alignof(slot_type)>1, this wouldn't cause a problem because the extra byte is padding.
Also change loop bounds to not rely on the fact that capacity_+1 is a multiple of Group::kWidth.
PiperOrigin-RevId: 379311830
--
1a3ba500fb2c33205854eb9258cd6e0fb1061bca by Martijn Vels <mvels@google.com>:
Change Ring, EXTERNAL and FLAT tag values to be consecutive values
The purpose of this change is to have FLAT = EXTERNAL + 1. Especially in the ring and btree alternative code, there is a common check if a node is a 'plain' edge (EXTERNAL or FLAT), or 'something else'. This change can make that check a single branch, i.e., instead of 'tag == EXTERNAL || tag >= FLAT', we can simply check for 'tag >= EXTERNAL'. Likewise we have some cases where we check for RING, EXTERNAL or FLAT, so we align RING + 1 with EXTERNAL.
PiperOrigin-RevId: 379291576
--
0c78e65ca4d85244b106c3f8e24cf268e09e72a3 by Benjamin Barenblat <bbaren@google.com>:
Round a double multiplication before casting it to integer
The code
static_cast<int>(x * y)
(for double x and y) performs a double multiplication into a temporary
that, by standard, may have excess precision. The subsequent cast to int
discards the excess precision. However, the cast may examine the excess
precision during conversion, producing surprising results like
static_cast<int>(1.7 * 10) == 16
on certain systems. Correct this case by explicitly rounding 1.7 * 10
before casting it.
PiperOrigin-RevId: 378922064
GitOrigin-RevId: b1fc72630aaa81c8395c3b22ba267d938fe29a2e
Change-Id: Ica708a006921118673e78d5fd2d61fe0fb0894d1
--
72ce5b636488f17753d110ec18f57132d6180db3 by Derek Mauro <dmauro@google.com>:
Update GoogleTest version used by Abseil
PiperOrigin-RevId: 378296419
--
1eaa36f65315a1cb95c95dfee0bc31307d280d18 by Abseil Team <absl-team@google.com>:
Define unary + operators for absl::int128 and absl::uint128.
These are rarely used but apparently missing.
PiperOrigin-RevId: 377975179
--
1a029d6ff8f9e21ddf0b89949be04c0a56661359 by Abseil Team <absl-team@google.com>:
Remove gratuitous reinterpret_cast.
PiperOrigin-RevId: 377894806
GitOrigin-RevId: 72ce5b636488f17753d110ec18f57132d6180db3
Change-Id: I8a06f69b3489c9aef8260fd271bde2a55f01807f
--
30af50146f07d7afdb196abf235f44ec44ea6409 by Derek Mauro <dmauro@google.com>:
Update Abseil dependency versions
PiperOrigin-RevId: 374415690
--
6a241e9ea8ee201789bb66aadf9e1ca9cc23c5dc by Derek Mauro <dmauro@google.com>:
Fix the install test project, which is doing a mixed-mode build.
This manifests in failure with GCC 11, which defaults to C++17
Also explicitly reference python3 in the test script.
python2 is being removed by some Linux distros.
PiperOrigin-RevId: 374278107
--
42f85122407e799183880e0b2e2a71f6d35ee003 by Evan Brown <ezb@google.com>:
Use `capacity + Group::kWidth` control bytes instead of `capacity + Group::kWidth + 1`.
We don't use the extra byte - we only need the first `capacity` ones that are valid, the one sentinel byte and then `Group::kWidth - 1` cloned control bytes. For example, in `EmptyGroup()`, where capacity is 0, we use `Group::kWidth` control bytes.
We need to update set_ctrl() to only mirror `Group::kWidth - 1` bytes instead of `Group::kWidth` bytes.
Note: this doesn't actually save memory unless `alignof(value_type)` is one.
Also add/update related comments.
PiperOrigin-RevId: 374198589
--
5dcd09b2221bf23add583541769b476dac54e112 by Evan Brown <ezb@google.com>:
Improve b-tree value_comp() support.
- Don't expose internal adapted comparator functionality.
- Support value_comp() for maps using function pointer comparators.
- For maps, make value_compare's constructor and the member comparator be protected - [reference](https://en.cppreference.com/w/cpp/container/map/value_compare).
PiperOrigin-RevId: 373832649
--
d75819786ff5a06e1ed0c5c1e80b3b95ac49c83b by Evan Brown <ezb@google.com>:
Don't export adapted comparator functionality in key_comp().
PiperOrigin-RevId: 373651039
GitOrigin-RevId: 30af50146f07d7afdb196abf235f44ec44ea6409
Change-Id: I260480b0923cefeba81c543e2b7c34cacaa7d7c7
--
daf5a2b9ab3507ad5fb9aebe9165933f33098b83 by Abseil Team <absl-team@google.com>:
Absl flat containers reserve enough space even in the presence of tombstones.
PiperOrigin-RevId: 372339945
--
9a61504867ba0eccc5046d7333090fbe3439cdd9 by Abseil Team <absl-team@google.com>:
Add benchmark for BlockingCounter
PiperOrigin-RevId: 372246068
--
91ee87e6de09fc62970667ee52654c9dcf7c478d by Evan Brown <ezb@google.com>:
In absl::StrSplit, support btree_multimap, and other non-std::multimap-multimaps by supporting any map type that returns iterator from insert().
Also:
- Use emplace() instead of insert() when available, not just for std::(multi)map - we can potentially change some string copies to moves this way.
- We no longer need the Insert class so remove it.
PiperOrigin-RevId: 372209653
GitOrigin-RevId: daf5a2b9ab3507ad5fb9aebe9165933f33098b83
Change-Id: I83098fde4a722cd4b682f024d3bfa56c613f960c
--
8e75347c10d85112296811be6ef35761744ad9bc by Derek Mauro <dmauro@google.com>:
Big update to LTS release process
* Add create_lts.py script to to the LTS modification
This is simpler than copybara since very few changes are needed
* Use the default installation paths instead of a versioned path.
If a versioned path is needed, this is easy to change on the commandline.
* Make the integration test use the LTS transformed version
* Test both static and dynamic linking (fixes pkg-config dynamic linking)
PiperOrigin-RevId: 363566934
--
e00e971a2de3138861f5e1900201c9cc7788f714 by Laramie Leavitt <lar@google.com>:
Add a non-compile test to absl::BitGenRef for temporaries.
PiperOrigin-RevId: 363437284
--
3685644ec115d99789de32aceb76c32a00756fea by Derek Mauro <dmauro@google.com>:
Make OSS code consistent with internal code by using the forward
declaration of absl::Status that contains ABSL_MUST_USE_RESULT.
PiperOrigin-RevId: 363426906
--
b85fec142c3aa3f632fa985f9f8f73a253819723 by Evan Brown <ezb@google.com>:
Move raw_hash_set::infoz_ into raw_hash_set::settings_. This reduces the size of raw_hash_sets by alignof(size_t) bytes when hashtablez is disabled.
PiperOrigin-RevId: 363034264
--
c6fde3b17e5845191eb8b2bfc1760c8bfb9573ff by Mark Barolak <mbar@google.com>:
Internal change
PiperOrigin-RevId: 362990378
--
81713cf964905b43d1cbe32ce5fed97539029625 by Abseil Team <absl-team@google.com>:
Fix typo in comment (execeptions -> exceptions).
PiperOrigin-RevId: 362946191
--
3ee92ca470feca44da417b03ee45a915c6eb5155 by Abseil Team <absl-team@google.com>:
Add absl::FindAndReportLeaks and routes it to the corresponding
__lsan_do_recoverable_leak_check.
PiperOrigin-RevId: 362622199
--
b95b7194b20e02c20d72289fbc79a0d35b82e256 by Abseil Team <absl-team@google.com>:
Add `kWithEverything` to StatusToStringMode
PiperOrigin-RevId: 362595218
--
0a960d96a0014eab7e1c55b479269450ed8e98d7 by Abseil Team <absl-team@google.com>:
Accept e.g. ".__uniq" as a valid clone name. Further, bring the implementation
on par with libiberty's demangler grammar.
Clang introduced option -funique-internal-linkage-names that adds the suffix
".__uniq.[0-9]+" to internal linkage functions to give them a globally unique
identifier. The suffix was designed to work with existing demanglers which do
recognize a "_" along with the alphanumeric string. This change enhances the
demangler to allow "_" with the alphanumeric string.
Please refer to libiberty's cp-demangle.c where function d_clone_suffix
implements the demangling of clone suffixes :
1. '_' is accepted as a valid character with the alphanumeric sequence.
2. The alphanumberic sequence is optional.
3. The digit sequence is optional.
PiperOrigin-RevId: 362557420
--
2ac5ea212c150afd2f58025a5cab8c45d16949c6 by Abseil Team <absl-team@google.com>:
Change variable name 'slots' to 'slot_count' to avoid name-clash with Qt builds.
PiperOrigin-RevId: 362556289
--
934f0f409c9c548716a46363d6e243406fad4028 by Mark Barolak <mbar@google.com>:
Clarify the comment on ABSL_CACHELINE_SIZE to indicate that the macro definition itself shouldn't change, but rather that call sites should change when possible.
This addresses the request for improved documentation in https://github.com/abseil/abseil-cpp/pull/842.
PiperOrigin-RevId: 362354288
GitOrigin-RevId: 8e75347c10d85112296811be6ef35761744ad9bc
Change-Id: I33ec8561d8d645c3353e9d2dd447501d0e1825a7
--
f9476c95cf7625d7b0fc4661f253b0aac4341044 by Abseil Team <absl-team@google.com>:
Add a test to verify that the new checksum field in Hashtablez is calculated
PiperOrigin-RevId: 356744293
--
ff8a3612463000e8c3d451e50367a3c65cb6cf21 by Abseil Team <absl-team@google.com>:
Remove the implied support comment for port.h, attributes.h, and integral_types.h's C compatibility from the header documentations.
Abseil-cpp is a C++ library; this brings port.h, attributes.h, and integral_types.h, into our stance for the rest of Abseil (aka, no assurance of C compatibility)
There is no guarantee that future changes to port.h, attributes.h, and integral_types.h, and their dependencies, will remain compatible with C, even for macros and definitions that currently are.
PiperOrigin-RevId: 356727505
--
be62292016381deee628dbb3f36cb6009bcc0282 by Abseil Team <absl-team@google.com>:
internal change
PiperOrigin-RevId: 356608125
--
13b35f17171df3d6853ea7088797b3be611505fc by Evan Brown <ezb@google.com>:
Clarify the comments for CapacityToGrowth/GrowthToLowerboundCapacity methods to specify the intent that capacity should equal growth when `capacity+1 < kWidth`.
Also add testing for this behavior.
PiperOrigin-RevId: 356579041
GitOrigin-RevId: f9476c95cf7625d7b0fc4661f253b0aac4341044
Change-Id: Iadd094d109b4869998f2427319ef66d1cf1e8eff
--
0b13723ab1ca5231950c3ef76e57c415ce36d9d2 by Abseil Team <absl-team@google.com>:
Fix documentation typo
PiperOrigin-RevId: 348003868
--
2ad4875258ffd604b19f57d7cfbb9f9a093ff880 by Derek Mauro <dmauro@google.com>:
Add missing #include <assert.h>
Note: This file is sometimes used from C so we can't use <cassert>
PiperOrigin-RevId: 347931562
--
4d0c777a3645bddea9d0d6c49ec8ef3afea8c0b7 by Chris Kennelly <ckennelly@google.com>:
Use unsigned types for BitMask helper functions.
Additionally, explicitly perform narrowing cast. T will always have fewer than
2^32 bits.
PiperOrigin-RevId: 347913413
--
80c44b0b066485a25baff56d475b67be2ad027e7 by Abseil Team <absl-team@google.com>:
Stash errno for a larger scope.
Also adjust the test to account for EXPECT_* possibly modifying errno as well.
PiperOrigin-RevId: 347899763
GitOrigin-RevId: 0b13723ab1ca5231950c3ef76e57c415ce36d9d2
Change-Id: I9e7c0e5d45ac778644f3ad72d215378a8cf8a7d4
--
dab5caab05d89d03066ef92584660688595a3aaf by Mark Barolak <mbar@google.com>:
Add absl::Status and absl::StatusOr to absl/README.md
Import of https://github.com/abseil/abseil-cpp/pull/863
PiperOrigin-RevId: 347857368
--
1ca3c7a96417cd6e6d62f4dc36fd5ddaa61cfa20 by Chris Kennelly <ckennelly@google.com>:
Leverage integer power-of-2 functions and bit counting library in Abseil.
PiperOrigin-RevId: 347816486
--
e5cbe05879fd65dce7875e2e0105331a1615d89b by Chris Kennelly <ckennelly@google.com>:
Mitigate narrowing warning on MSVC.
If sizeof(x) <= sizeof(uint32_t), no truncation occurs when casting to
uint32_t, but the compiler cannot always determine this.
PiperOrigin-RevId: 347696526
--
079dff64cb175d282d9e22dfb4a522199ffdae2e by Benjamin Barenblat <bbaren@google.com>:
Avoid libgcc -NaN narrowing bug
When testing -NaN parsing, avoid narrowing -NaN from double to float.
This avoids a bug in libgcc
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98251).
PiperOrigin-RevId: 347654751
--
2e78a7634865aeef6765e1f447e96cf8d9985059 by Chris Kennelly <ckennelly@google.com>:
Mark popcount helpers as inline.
These are conditionally constexpr, so we need to add inline to cover the
non-constexpr builds to avoid ODR violations.
PiperOrigin-RevId: 347620138
--
437fbb363aea1654179f102dcdd607ec33c1af1e by Chris Kennelly <ckennelly@google.com>:
Use explicit narrowing cast.
This is never invoked in practice, but compilers with -Wimplicit-int-conversion
may trigger when sizeof(T) > sizeof(uint16_t) prior to determining this never
runs.
PiperOrigin-RevId: 347609857
GitOrigin-RevId: dab5caab05d89d03066ef92584660688595a3aaf
Change-Id: I6296ddffe7ec646f8ce121138f21e1e85a2cff4b
--
6e9f93888bbe6718997ed90bbd049f1f3572b066 by Abseil Team <absl-team@google.com>:
Fix status to be safe for self move assignment.
PiperOrigin-RevId: 346815392
--
35cae74a977f258e81dfbe925fb5a34cb6632036 by Gennadiy Rozental <rogeeff@google.com>:
Eliminate unnecessary access to the global vars.
PiperOrigin-RevId: 346777168
--
e7e786c243069060f5d6c1c945decb4b0b83f95b by Andy Getzendanner <durandal@google.com>:
Internal change.
PiperOrigin-RevId: 346685656
--
4ccd41c48f1a83cfa20b3ea534f743dd7d788376 by Abseil Team <absl-team@google.com>:
Move CordRep Ref() and Unref() logic into cord_internal.h
This change moves Ref() and Unref() logic out of cord.cc into cord_internal. The main purpose is to make upcoming ring buffer changes easier to isolate from existing cord.cc code. Notice that this removes the nullptr check from Unref() and now requires it to be non null (which held true most times). We may need to rethink if the 'unref unlikely one' is the common case: are cordreps most likely shared? This may be something between 'root' and non root nodes, i.e., is it more likely for leaf / flat nodes in large cords to be shared than top level cordreps being shared? Vice versa? Benchmarks say that we mostly shouldn't care, the caveat being that atomic ops seem more expensive on upcoming archs (arcadia) so we should error on the side of an extra IsOne() branch saving us single owned atomic ops.
PiperOrigin-RevId: 346676121
--
f0babab103b9e60d61ba09482d468985e43eceb3 by Samuel Benzaquen <sbenza@google.com>:
Fix iterator based constructor and `.insert` members to only require
EmplaceConstructible as the standard specifies.
PiperOrigin-RevId: 346616707
--
8f48eedda02277f9c96a88ed7726e34b557cce20 by Evan Brown <ezb@google.com>:
Fix a bug in binary_search_impl when there's a transparent, three-way comparator that has different equivalence classes for different lookup types.
Add a new can_have_multiple_equivalent_keys method to share the common logic for these cases.
PiperOrigin-RevId: 346605948
--
649183cb3cc9383431de9c81fb1c0f885d4001ae by Abseil Team <absl-team@google.com>:
Add benchmark for accessing a Duration flag.
PiperOrigin-RevId: 346594843
--
fefdb046520871af63ce2229e2f7cccfc0483dea by Abseil Team <absl-team@google.com>:
Restructure CordReader for upcoming ring buffer changes.
PiperOrigin-RevId: 346410642
--
8b2f50e7da0ebab06ead5f94e366e984ca23cb6a by Abseil Team <absl-team@google.com>:
Wire in an internal-only flag to toggle upcoming ring buffer changes on/off for experimentation.
PiperOrigin-RevId: 346199111
GitOrigin-RevId: 6e9f93888bbe6718997ed90bbd049f1f3572b066
Change-Id: I8f34866b25a79209cb5448bbb28dd3044111d2e9
--
77e2a9c277721f23a8df983c1efc6ed97c167964 by Derek Mauro <dmauro@google.com>:
Simplify an internal piece of CityHash to remove the conflicting
definition of uint128
PiperOrigin-RevId: 342906008
--
593dbb6d5fd32cc5d31e3ba1eda02e8ddeaeaaf6 by Gennadiy Rozental <rogeeff@google.com>:
Skip retired flags in GetAllFlags output.
This is a bug fix. We should not have released this interface producing retired flags. There should be no observable difference for the users who should not care about retired flags.
PiperOrigin-RevId: 342889378
--
bb77e07abff4dbd0a9c97eb85ee85cb39b84d04a by Abseil Team <absl-team@google.com>:
Extract `find_first_not_full` outside of the raw_hash_set.
This function is used in the following scenarios:
0. [relatively hot] insert, when actual new element is added.
1. [relatively cold] resize (explicit or on capacity grow)
2. [relatively cold] copy constructor
3. [cold] rehash on insert/erase (aka cache) use cases
Resize typically mitigated by `reserve` in performance critical cases. Rehashing happen relatively rare, when hash table become polluted with deleted slots.
We keep `find_first_not_full` in header, so that compiler still can inline it, when necessary (most notably in insert use case).
This reduce binary size since only one copy of this function will be present in the binary for all tables where the function is not inlined (at least in one case).
PiperOrigin-RevId: 342736300
GitOrigin-RevId: 77e2a9c277721f23a8df983c1efc6ed97c167964
Change-Id: I3fe9d054c66049bb598ea35c45fc800b1cdaa9b6
--
92811d3307196b2810bdc3c7e50ef9544db3f23b by CJ Johnson <johnsoncj@google.com>:
Refactor InlinedVector's OverheadTest.Storage test to be easier to understand and modify in the future
PiperOrigin-RevId: 342718098
--
cf3f2af201775f9c4e68dd2f9806126aecbd0748 by Abseil Team <absl-team@google.com>:
Implement `reserve` more explicit to avoid calling `rehash`.
`reserve` is much more widely used method and doesn't need extra logic present in `rehash`.
E. g., accidental `t.reserve(0)` on non empty table shouldn't cause rehashing, which was a case before this change.
It also remove some unnecessary computations from `reserve`.
Was:
```
GrowthToLowerboundCapacity 2x
NormalizeCapacity 1x
bitwise | 1x
n == 0 && capacity_ == 0 1x
n == 0 && size_ == 0 1x
n == 0 1x
|| 1x
m > capacity_ 1x
overall branches 6x
(GrowthToLowerboundCapacity 2x, NormalizeCapacity 1x, rehash 3x)
```
Now:
```
GrowthToLowerboundCapacity 1x
NormalizeCapacity 1x
bitwise | 0x
n == 0 && capacity_ == 0 0x
n == 0 && size_ == 0 0x
n == 0 0x
|| 0x
m > capacity_ 1x
overall branches 3x
(GrowthToLowerboundCapacity 1x, NormalizeCapacity 1x, reserve 1x)
```
PiperOrigin-RevId: 342714022
--
c2ab8c1e4091ff685110c81bae12e3567e0cded3 by Abseil Team <absl-team@google.com>:
Remove `reset_growth_left` call, which already happen in `initialize_slots`.
PiperOrigin-RevId: 342701073
--
3f41ccb70afabec8bc0dcfcca3e3ac918726bb92 by Derek Mauro <dmauro@google.com>:
Use memmove instead of memcpy in situations where the source and
destination may point to the same buffer
Note that the OSS Abseil code never calls CUnescapeInternal with
leave_nulls_scaped=true, so there is no bug in the OSS code.
Fixes#844
PiperOrigin-RevId: 342633781
--
57afb2c307b008b9f9daaa736b49c066e0075e39 by Abseil Team <absl-team@google.com>:
Add absl::Round() for absl::Duration as a complementary to Floor, Ceil and Trunc. Rounding halfway cases away from zero as std::round() does.
PiperOrigin-RevId: 342610871
--
c49754ecddb9339eff60b826dc17b3b459333bc0 by Abseil Team <absl-team@google.com>:
Add absl::Round() for absl::Duration as a complementary to Floor, Ceil and Trunc. Rounding halfway cases away from zero as std::round() does.
PiperOrigin-RevId: 342594847
--
b51bd29233aaee6ef241de984635356d26c93e4d by Abseil Team <absl-team@google.com>:
Move `ConvertDeletedToEmptyAndFullToDeleted` to cc file.
This function is cold and only used when table become polluted with deleted slots.
So this shouldn't negatively affect performance and considered safe.
This change is reducing linkage and binary size.
PiperOrigin-RevId: 342319685
--
acb83c004d14e563a3b47dcfcb6c5508bee6408f by Abseil Team <absl-team@google.com>:
Fix indentation in uniform_int_distribution.h.
PiperOrigin-RevId: 342297575
GitOrigin-RevId: 92811d3307196b2810bdc3c7e50ef9544db3f23b
Change-Id: I4fbaf4aab122d5c939ae9a3ef46ee8cca3df75e6
--
4ee535c37f92cd45b8c9aa009e5c833265b3a0bb by Samuel Benzaquen <sbenza@google.com>:
Test and fix `insert(hint, node)`
PiperOrigin-RevId: 337122891
--
7b760ced555756fecbad702fedb697424dd65167 by Abseil Team <absl-team@google.com>:
Changed the minimum version of iOS and OSX for Abseil Podspec.
PiperOrigin-RevId: 336926756
GitOrigin-RevId: 4ee535c37f92cd45b8c9aa009e5c833265b3a0bb
Change-Id: I94e70f3342570c83b9965ca458a3f02eaa3efc0d
--
1829e203300191671abd4b478ca189019e6f88b1 by Abseil Team <absl-team@google.com>:
Don't return true from Demangle() when we didn't actually produce demangled output.
PiperOrigin-RevId: 332544020
--
239b617bd8322cfda69d0dcdd3d78499ed61206d by Abseil Team <absl-team@google.com>:
Minor documentation fix.
PiperOrigin-RevId: 332517877
--
d566c156619bbdceaf6e84bd0d3aa575d5e790f8 by Gennadiy Rozental <rogeeff@google.com>:
Added missing asserts for seq.index() < capacity_ and unified their usage based on has_element().
Import of https://github.com/abseil/abseil-cpp/pull/781
PiperOrigin-RevId: 332229369
GitOrigin-RevId: 1829e203300191671abd4b478ca189019e6f88b1
Change-Id: I5bb1f713497fef54a7abaf2020be91cb32e87b93
--
9f746b79e16d36dba908ed9e2a586d890fe54acc by Derek Mauro <dmauro@google.com>:
Remove the Bazel mirror URL that we use in our WORKSPACE file
This doesn't appear to be supported. We use --distdir caching in our tests.
PiperOrigin-RevId: 327634738
--
e1f6f54830c415fc8bb8dc14483fae4cf9713d75 by Abseil Team <absl-team@google.com>:
Removing comments following license() rules as they are rarely useful, redundant with LICENSE files, and tend to fall out of date.
PiperOrigin-RevId: 327504063
--
b59c076638a57a74a3f8475f1dee8b536e32a15f by Gennadiy Rozental <rogeeff@google.com>:
Change GetAllFlags API to return a collection of mutable flag handles.
This will make this interface on par with FindCommandLineFlag and allow to call
CommandLineFlag::ParseFrom on the handle returned by GetAllFlags.
PiperOrigin-RevId: 327499084
--
bbf56b3c4a1d908d95e5a52aba38b1984151efff by Gennadiy Rozental <rogeeff@google.com>:
Make raw_hash_set compile when AllocTraits::propagate_on_container_swap is false.
PiperOrigin-RevId: 327371107
--
837f62c85ea65c1d6b847a75816198c625fe62ff by Abseil Team <absl-team@google.com>:
On macOS, `mem_alloc` is defined like this:
rpc/types.h:86:#define mem_alloc(bsize) calloc(1, bsize)
So if that file is included before container_memory.h, the variable mem_alloc
may never get defined. This is fixed by using a different name.
PiperOrigin-RevId: 327360224
--
aa8f5528382c0d01239ce75b645723aaf7e1ef46 by Gennadiy Rozental <rogeeff@google.com>:
Release of absl::GetAllFlags API.
PiperOrigin-RevId: 327275943
GitOrigin-RevId: 9f746b79e16d36dba908ed9e2a586d890fe54acc
Change-Id: I99c5c87dd1712bf8df9a52397b0c1e400a3c3447
--
240f86077dabaa58210e6b1a35cc442902409bf5 by Gennadiy Rozental <rogeeff@google.com>:
Fix the link to the Allocator concept description.
PiperOrigin-RevId: 326292363
--
d023337da5c7c23ec5f316c4e03efc4d8404ad63 by Gennadiy Rozental <rogeeff@google.com>:
Add -DNOMINMAX to gcc/clang build command line in case they are used to build Abseil on Windows.
Fixes#761
PiperOrigin-RevId: 326255039
GitOrigin-RevId: 240f86077dabaa58210e6b1a35cc442902409bf5
Change-Id: If8a40a9b2be9c0c1e652347e2f22e2fff6bbeaa1
Abseil Team
Derek Mauro
Greg Falcon