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* Eliminate AArch64-specific code paths from LowLevelHashGravatar Benjamin Barenblat2022-12-08
| | | | | | | | | | | | | | After internal investigation, it’s no longer clear that the alternative LowLevelHash mixer committed in a05366d851c5cb88065272f951e03955197e7c11 unequivocally improves performance on AArch64. It unnecessarily reduces performance on Apple Silicon and the AWS Graviton. It also lowers hash quality, which offsets much of the performance gain it provides on the Arm Neoverse N1 (see https://github.com/abseil/abseil-cpp/issues/1093). Switch back to the original mixer. Closes: https://github.com/abseil/abseil-cpp/issues/1093 PiperOrigin-RevId: 493941913 Change-Id: I84c789b2f88c91dec22f6f0f6e8c5129d2939a6f
* Export of internal Abseil changesGravatar Abseil Team2022-01-19
| | | | | | | | | | | | | | | -- 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
* Remove bazelbuild/rules_cc dependency (#1038)Gravatar Vertexwahn2021-10-14
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* Export of internal Abseil changesGravatar Abseil Team2021-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 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
* Export of internal Abseil changesGravatar Abseil Team2021-08-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 3a9b4e8e5ecba532db5cc4ac12d12660307ce9fb by Derek Mauro <dmauro@google.com>: Use the Bazel @platforms repository for platform constraints Fixes #1000 PiperOrigin-RevId: 390644226 -- b34e4d2f8a86b54bd483ec4c9c3dd781ad2d8b68 by Abseil Team <absl-team@google.com>: debugging: add some handling for RISC-V The RISC-V architecture uses a downward growing stack and can host Linux using ELF files. Adjust a few sites accordingly to indicate how to handle the RISC-V architecture. PiperOrigin-RevId: 390631894 -- 5fa3a0961bf3dd0799c048956a0128f7b8113f1e by Samuel Benzaquen <sbenza@google.com>: Rename the buffer hash function to LowLevelHash. Although it started as wyhash, it will depart from it so it does not make sense to keep the name. PiperOrigin-RevId: 390483506 -- 2e7867a2301d58ad4cd5abcaa5fd6f0db973ae7b by Abseil Team <absl-team@google.com>: This is an internal change. PiperOrigin-RevId: 390349746 GitOrigin-RevId: 3a9b4e8e5ecba532db5cc4ac12d12660307ce9fb Change-Id: I322c3762552a2107e6c6b108c25c01e5efa8aecd
* Export of internal Abseil changesGravatar Abseil Team2021-06-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 373171b46238585c818cec37af26959f5412f813 by Abseil Team <absl-team@google.com>: Build with -Wl,-no-undefined. PiperOrigin-RevId: 381276748 -- da32624792d2948fe83d0ce58794d505799ab5d0 by Benjamin Barenblat <bbaren@google.com>: s/round/rint/ in exponential_biased `rint` differs from `round` in that it uses the current FPU rounding mode. It’s thus potentially faster, since it doesn’t have to save and restore FPU state. It also is more reflective of developer intent – most developers expect all FPU operations to use the current rounding mode, and having exponential_biased follow that rule seems ideal. PiperOrigin-RevId: 381268264 -- 8f860253a4283d2cc8230fe98d7cdf7bcb3e05f1 by Abseil Team <absl-team@google.com>: Internal change. PiperOrigin-RevId: 381264180 GitOrigin-RevId: 373171b46238585c818cec37af26959f5412f813 Change-Id: Iefe60b15c80318a7707e0c32159ac004bfa26d72
* Export of internal Abseil changesGravatar Abseil Team2021-06-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- ca5ce10fa5286f2bfb51890a37b547308b8d6d93 by Benjamin Barenblat <bbaren@google.com>: Skip floating-point edge-case tests when using an x87 32-bit Intel CPUs use 80-bit floats for intermediate values, which can change the results of floating point computations from what we normally expect. Identify tests that are sensitive to the x87, and skip them when we’re on 32-bit Intel. PiperOrigin-RevId: 378722613 -- e5798bb017854e7f3b6d8721fed7dd553642b83d by Abseil Team <absl-team@google.com>: Build without -Wl,-no-undefined. PiperOrigin-RevId: 378690619 -- 3587685a2c932405e401546ec383abcfbf8495c8 by Derek Mauro <dmauro@google.com>: Update CCTZ BUILD file. PiperOrigin-RevId: 378688996 -- 06c7841b2bf8851410b716823b7ff9b42d86085e by Derek Mauro <dmauro@google.com>: Change the CMake install test to use installed version of GoogleTest PiperOrigin-RevId: 378537383 -- eaa8122a7062c56bed80e806344cca0c8325bf6f by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 378525523 -- 381f505cce894b8eec031a541855650c4aa46e64 by Abseil Team <absl-team@google.com>: Mark btree_container::clear() with the ABSL_ATTRIBUTE_REINITIALIZES attribute. This prevents false positives in the clang-tidy check bugprone-use-after-move; it allows clear() to be called on a moved-from btree_container without any warnings, and the btree_container will thereafter be regarded as initialized again. PiperOrigin-RevId: 378472690 GitOrigin-RevId: ca5ce10fa5286f2bfb51890a37b547308b8d6d93 Change-Id: I4267246f418538c5baacb562d1a40213fb13f246
* Export of internal Abseil changesGravatar Abseil Team2021-02-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 4ff721439234e91caf6f7b772e5f554e7dd423c8 by Benjamin Barenblat <bbaren@google.com>: Remove endian-sensitivity from hash slow path Prior to this commit, the Abseil hash fast path was endian-agnostic, but the slow path assumed a little-endian platform. Change the slow path to be endian-correct, ensuring that values produced by the fast and slow paths are equal even on big-endian systems. PiperOrigin-RevId: 355424258 -- 7f4fe1aa4de46ad0a2ef19fa9c061fc12a7391ed by Abseil Team <absl-team@google.com>: Directly store CordzInfo in the InlineData data contents of InlineRep This greatly reduces the cost of coping and moving cords. Especially the move constructor and move assignment are now back to lean loads and stores without needing any CordzInfo lookups for tracked cords. PiperOrigin-RevId: 355409161 -- 3ca4ca84ed6d98f1e383ffd8d12c28876e905bb3 by Abseil Team <absl-team@google.com>: Add #include <unordered_map> PiperOrigin-RevId: 355386114 -- 30b0ffad0621971b3135148fcc9e183b0dd2a6bb by Abseil Team <absl-team@google.com>: Optimize Cord copy constructor This change avoids double stores of the Cord copy constructor from the zero init of the InlineData / InlineRep contents followed by the assignment and inlines the copy constructor. PiperOrigin-RevId: 355287939 -- 0c043fa7b6e41ca7cefc5edc1e17ad46223e4e77 by CJ Johnson <johnsoncj@google.com>: Now that the absl::Cleanup example returns absl::Status, since we decided on absl::FailedPreconditionError, the precondition should be a positive statement and then the check should be failure to adhere to that positive statement PiperOrigin-RevId: 355216923 -- 9ed922ca5d28fe8790ec6bc0837cf39fbcc92896 by Gennadiy Rozental <rogeeff@google.com>: Do not set mvsc linker flags for clang-cl (fixes #874) Import of https://github.com/abseil/abseil-cpp/pull/891 PiperOrigin-RevId: 355199380 GitOrigin-RevId: 4ff721439234e91caf6f7b772e5f554e7dd423c8 Change-Id: I3d9d2383549720d7a91f9108dfcd979ad6632fce
* Export of internal Abseil changesGravatar Abseil Team2020-12-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 465461299a9814aca325fee599cefbfe462f12fe by Abseil Team <absl-team@google.com>: Optimize trivially copyable flags with a sequence lock PiperOrigin-RevId: 349602779 -- 73f39f959e21121684a51887243abad0814a335e by Abseil Team <absl-team@google.com>: Internal change PiperOrigin-RevId: 349590869 -- 6b3106fa66b8f075a39a1a8f3265ae132b7e2c84 by Abseil Team <absl-team@google.com>: Remove ABSL_DLL from `log_prefix_hook` and `abort_hook`. PiperOrigin-RevId: 349560499 -- bb0d295e699a509f3284145e025d00036b70dbb2 by Abseil Team <absl-team@google.com>: Tiny docstring fix A small edit to make "use of this is useful" a little less redundant. :) PiperOrigin-RevId: 349445689 GitOrigin-RevId: 465461299a9814aca325fee599cefbfe462f12fe Change-Id: I08cc4091b8b95b68188cb9168ac622dacc5fa688
* Export of internal Abseil changesGravatar Abseil Team2020-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- ff793052bd01e1e4fcf639f94d7c30c4855a9372 by Evan Brown <ezb@google.com>: Roll forward of btree_iterator refactoring. PiperOrigin-RevId: 346116047 -- 17984679f16e3e2139b0f14fa76f4a6ca16a3ef9 by Chris Kennelly <ckennelly@google.com>: Extend absl::StrContains to accept single character needles. Single characters are more efficient to search for. Extending this API allows the abseil-string-find-str-contains Clang Tidy to include this pattern. The C++ committee has adopted http://wg21.link/P1679 for inclusion in C++23. PiperOrigin-RevId: 346095060 -- ef20b31c501b1dcaa25e244fd8f8aa43dec09bd6 by Jorg Brown <jorg@google.com>: Internal change for cord ring PiperOrigin-RevId: 346087545 -- b70f2c1cb77fc9e733a126e790967d45c5fd1dc7 by Derek Mauro <dmauro@google.com>: Release layout_benchmark PiperOrigin-RevId: 345968909 -- 3a0eda337ee43622f92cfe14c2aa06f72dc71ee5 by Derek Mauro <dmauro@google.com>: Release raw_hash_set_probe_benchmark PiperOrigin-RevId: 345965969 -- abffdb4bb241a2264cb4e73a6262b660bb10447d by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 345733599 -- 7c9e24a71188df945be17fe98f700bdb51f81b16 by Derek Mauro <dmauro@google.com>: Release hash_benchmark PiperOrigin-RevId: 345721635 -- d68f33f17f9a8cd3f6da8eee3870bdb46402cdc8 by Derek Mauro <dmauro@google.com>: Release raw_hash_set_benchmark PiperOrigin-RevId: 345708384 -- 6e6c547d4d1327b226c0ffe8ff34d0aa103ce24b by Abseil Team <absl-team@google.com>: Updates the implementation of InlinedVector to accurately express the value-initialization semantics of the default constructor PiperOrigin-RevId: 345548260 -- 1532424deda97d468444c217cc0fa4614099c7c1 by Evan Brown <ezb@google.com>: Rollback btree_iterator refactoring. PiperOrigin-RevId: 345543900 GitOrigin-RevId: ff793052bd01e1e4fcf639f94d7c30c4855a9372 Change-Id: I719831981fd056de41939f9addfee3d85e3b49b2
* Export of internal Abseil changesGravatar Abseil Team2020-11-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- fcedaa5714efab8738446fa21620b827a40a3458 by Derek Mauro <dmauro@google.com>: Uses Wyhash in the implementation of absl::Hash for hashing sequences of more than 16 bytes on some platforms. Due to the per-process randomization of the seed used by absl::Hash, users should not notice this change, other than possibly getting better performance. This change only affects platforms where absl::uint128 is implemented with an intrinsic (and where sizeof(size_t)==8) since Wyhash relies on fast 128-bit multiplication for speed. PiperOrigin-RevId: 343956735 -- 085e108c760084f19caa21dbeb2118de2be3f8f0 by Abseil Team <absl-team@google.com>: Internal change for cord ring PiperOrigin-RevId: 343919274 -- 4c333278ad14d6692f203074b902506008ad624a by Jorg Brown <jorg@google.com>: Minimize strings_internal::StringConstant further, by removing the need for the compiler to instantiate a compile-time class function. PiperOrigin-RevId: 343878568 -- 71c3c8c7b7821b67997e3d5345aaec67f93f266f by Abseil Team <absl-team@google.com>: Internal change PiperOrigin-RevId: 343838259 GitOrigin-RevId: fcedaa5714efab8738446fa21620b827a40a3458 Change-Id: Ifb91895a82d11e743acd42fe97ab7fb70712b7df
* Export of internal Abseil changesGravatar Abseil Team2020-08-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 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
* Export of internal Abseil changesGravatar Abseil Team2020-04-20
| | | | | | | | | | | | | | | | | | | | | | -- b885a238ec13effcc407e250583e293052bd7984 by Greg Falcon <gfalcon@google.com>: Remove the dependency of //absl/hash on //absl/strings:cord. The `AbslHashValue` definition should reside in cord.h, but the implementation currently needs internal details from the hash library. This CL changes the way that Cord gains access to those internals. Note that PiecewiseCombiner remains an internal namespace API, and we still reserve the right to make changes to it. The cord_benchmark shows no statistically significant changes in hash<Cord> performance with this change. PiperOrigin-RevId: 307393448 -- ca449f230ee719d069d9217ba28a07bf5b3bd8b1 by Derek Mauro <dmauro@google.com>: Move the extension to use absl::Format() with absl::Cord as a sink to cord.h PiperOrigin-RevId: 307077162 GitOrigin-RevId: b885a238ec13effcc407e250583e293052bd7984 Change-Id: If24a90782c786fa0b4343bc7d72d053b66c153ea
* Export of internal Abseil changesGravatar Abseil Team2020-03-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 2c5c118f0615ba90e48ee2f18eccc9f511740f6d by Samuel Benzaquen <sbenza@google.com>: Rename internal macros to follow the convention in absl. PiperOrigin-RevId: 299906738 -- 92d84a707c7ebc4ec19bdd92d5765d1b6d218c1e by Derek Mauro <dmauro@google.com>: Import GitHub #629: Skip the .exe suffix in the helpshort filter on Windows PiperOrigin-RevId: 299892396 -- 2a6910d4be6c67a8376628764121b528ff53504d by Abseil Team <absl-team@google.com>: Use unsigned int128 intrinsic when available. It generates better branchless code. PiperOrigin-RevId: 299848585 -- 110c16cf0a739e1df5028fb6fbd03ef5dde1d278 by Derek Mauro <dmauro@google.com>: Import GitHub #594: Avoid reading the registry for Windows UWP apps PiperOrigin-RevId: 299821671 -- d8397d367e88163e5e8a47f379c716352dc91d03 by Greg Falcon <gfalcon@google.com>: Add absl::Hash support for Cord. The hash function is heterogeneous with other string types: a Cord and a string with the same byte sequence will hash to the same value. SwissTable types know about Cord, and will allow heterogeneous lookup (e.g., you can pass a Cord to flat_hash_map<string, T>::find(), and vice versa.) Add a missing dependency to the cmake Cord target. PiperOrigin-RevId: 299443713 GitOrigin-RevId: 2c5c118f0615ba90e48ee2f18eccc9f511740f6d Change-Id: I7b087c7984b0cb52c4b337d49266c467b98ebdf9
* Export of internal Abseil changesGravatar Abseil Team2019-11-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 074a799119ac881b8b8ce59ef7a3166d1aa025ac by Tom Manshreck <shreck@google.com>: nit: Add return info for StrCat PiperOrigin-RevId: 278647298 -- d58a2a39ab6f50266cc695506ba2e86bdb45d795 by Mark Barolak <mbar@google.com>: Stop suppressing no-nested-anon-types warnings because there aren't actually any warnings to suppress. PiperOrigin-RevId: 278440548 -- 445051bd280b9a6f608a8c80b3d7cafcc1377a03 by Abseil Team <absl-team@google.com>: ResetThreadIdentity does not need to clear identity->waiter_state. ResetThreadIdentity is only called by NewThreadIdentity. NewThreadIdentity is only called by CreateThreadIdentity. CreateThreadIdentity calls PerThreadSem::Init, which initializes identity->waiter_state, immediately after calling NewThreadIdentity. Therefore ResetThreadIdentity does not need to clear identity->waiter_state. PiperOrigin-RevId: 278429844 -- c2079b664d92be40d5e365abcca4e9b3505a75a6 by Abseil Team <absl-team@google.com>: Delete the f->header.magic check in LowLevelAlloc::Free(). The f->header.magic check in LowLevelAlloc::Free() is redundant, because AddToFreeList() will immediately perform the same check. Also fix a typo in the comment that documents the lock requirements for Next(). The comment should say "L >= arena->mu", which is equivalent to EXCLUSIVE_LOCKS_REQUIRED(arena->mu). NOTE: LowLevelAlloc::Free() performs the f->header.magic check without holding the arena lock. This may have caused the TSAN data race warning reported in bug 143697235. PiperOrigin-RevId: 278414140 -- 5534f35ce677165700117d868f51607ed1f0d73b by Greg Falcon <gfalcon@google.com>: Add an internal (unsupported) PiecewiseCombiner class to allow hashing buffers piecewise. PiperOrigin-RevId: 278388902 GitOrigin-RevId: 074a799119ac881b8b8ce59ef7a3166d1aa025ac Change-Id: I61734850cbbb01c7585e8c736a5bb56e416512a8
* Export of internal Abseil changesGravatar Abseil Team2019-08-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- bc74316103bbda92541896f588f71c9d45bea768 by Gennadiy Civil <misterg@google.com>: Manually fixing the BUILD.bazel files -- d41bf9ea916a0dc8c69e6ba77f58f9d55649880e by Shaindel Schwartz <shaindel@google.com>: Minor cleanup to miscellaneous BUILD files. PiperOrigin-RevId: 266420157 -- 08a8dc2cbd48d27e1115809f9ca8d178551cd66e by Gennadiy Civil <misterg@google.com>: Internal Change BEGIN_PUBLIC Internal Change END_PUBLIC -- 8617d58fde1ece40e4aa79eaa5e250b42d19835f by Shaindel Schwartz <shaindel@google.com>: Internal Change BEGIN_PUBLIC Internal Change END_PUBLIC -- 3a0fc7d48bdc70c4f7dffc219578693dea84eb2d by Derek Mauro <dmauro@google.com>: Implement absl::string_view::at() PiperOrigin-RevId: 266024644 -- ba53a9da8ede8fe7b8971eaab6b3a1fa34763ff6 by Andy Soffer <asoffer@google.com>: Remove forcing of optimization levels in MSVC. PiperOrigin-RevId: 265927588 -- df86f2046b54bba7da2e345040806d43470de5c0 by Shaindel Schwartz <shaindel@google.com>: Internal change PiperOrigin-RevId: 265811077 -- e2e3a6e8194363e7c6377672560c806d638a7c74 by Derek Mauro <dmauro@google.com>: Remove ABI unsafe mixed exceptions mode compilation. Testing will now be done on CI with the exceptions flag set globally. PiperOrigin-RevId: 265796079 GitOrigin-RevId: bc74316103bbda92541896f588f71c9d45bea768 Change-Id: Ibccd00f4829520454aa55c4f55c7cb2dc9c6b65a
* [bazel] Add fixes for --incompatible_load_cc_rules_from_bzl (#351)Gravatar Yannic2019-08-16
| | | | | | | | | | | * [bazel] Add fixes for --incompatible_load_cc_rules_from_bzl Starting with Bazel 1.0 (September 2019), C++ rules will need to be loaded from the @rules_cc repository. This change adds the required loads for that. For full compatibility, we will need versions of googletest and google-benchmark that also includes these loads. * Run buildifier again after merge
* Export of internal Abseil changes.Gravatar Abseil Team2019-05-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- ab1a58c85a462884413ec0022dc1fff19ccb8602 by Abseil Team <absl-team@google.com>: Clarified the documentation in str_format.h to say that use of absl::FormatSpec is ok for wrapper functions. Added tests that express this. PiperOrigin-RevId: 247657991 -- fef9481e58d579f1514babcb960ca60a51883fd8 by CJ Johnson <johnsoncj@google.com>: Adds exception safety tests for InlinedVector::InlinedVector() and InlinedVector::InlinedVector(const allocator_type&). PiperOrigin-RevId: 247617048 -- ef3217e1cd1e9a6ff5f2025e061b8ce3735af78f by Abseil Team <absl-team@google.com>: Internal change. PiperOrigin-RevId: 247614063 -- ed4c3345c4a04d8ec5c9e627058f17fce55925b1 by CJ Johnson <johnsoncj@google.com>: Update InlinedVector::clear() Introduces inlined_vector_exception_safety_test with the first test (clear), adds new benchmarks (for clear), and updates the implementation of clear. PiperOrigin-RevId: 247496049 -- 144a3a77c93bc8b2226da6f4b56166ee3d9868de by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 247482532 -- 286bbb89e154d5424955b644edad5fe04be487f8 by Derek Mauro <dmauro@google.com>: Add scripts to run ASAN and TSAN on CI. PiperOrigin-RevId: 247479658 GitOrigin-RevId: ab1a58c85a462884413ec0022dc1fff19ccb8602 Change-Id: Ief4c5a62587d0c59d405735df469d498aa6bf101
* Export of internal Abseil changes.Gravatar Abseil Team2019-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 9fa04b5fb4b6aeb47226b9095b3bc36a53669c39 by Abseil Team <absl-team@google.com>: Release types/compare.h, which contains stand ins for three-way comparison result types from C++20. Use absl::weak_ordering for a three-way comparator in test-instance-tracker.h. PiperOrigin-RevId: 247290078 -- 70a762f4eb35ea1d5a5fcb3274a8086824a0b82c by Derek Mauro <dmauro@google.com>: Upgrade linux_clang-latest builds to LLVM r356814 and Bazel 0.25.0 PiperOrigin-RevId: 247250176 -- f305cd5c36561e4dbb69eb87568553ae5badcb15 by CJ Johnson <johnsoncj@google.com>: Remove argument deduction based on template template argument in InlinedVector/Storage PiperOrigin-RevId: 247232334 -- 2cab8e426838baceb7d08edb313416480d26aa5b by Eric Fiselier <ericwf@google.com>: Import of CCTZ from GitHub. PiperOrigin-RevId: 247140132 GitOrigin-RevId: 9fa04b5fb4b6aeb47226b9095b3bc36a53669c39 Change-Id: I373a7d9bc90befa2a9f06555cb8703610c0313b9
* Export of internal Abseil changes.Gravatar Abseil Team2019-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 78293ba4eb4981991ae7e6edd25eb9245fcd7515 by Andy Soffer <asoffer@google.com>: internal changes PiperOrigin-RevId: 247073879 -- 7bd97e3aad0c3012b89a39392a6ad3f254e9f3c3 by Derek Mauro <dmauro@google.com>: Release commandline flags PiperOrigin-RevId: 247065920 -- 2a991849fd7b140a43b073076d194b61533fd199 by Tom Manshreck <shreck@google.com>: Add documentation for built-in usage flags PiperOrigin-RevId: 247058863 -- 14157b0de45841706bbd631284191fd94c313db9 by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 247058292 -- ed67e0a80468596e30540b367727a250fa415b68 by Abseil Team <absl-team@google.com>: Internal Change. PiperOrigin-RevId: 246828655 -- e1bc8c2aa3f90b3d56c55c5b7244e718c919265d by Abseil Team <absl-team@google.com>: Internal change PiperOrigin-RevId: 246822325 -- 907a68f287199f749cb9bdb48571b50bc34731e1 by Eric Fiselier <ericwf@google.com>: Accept vector<bool>::reference in StrCat and friends. Converting vector<bool>::reference to alphanum requires two user defined conversions, which isn't allowed. In order to accept this, we need a special constructor that is only enabled for the bool proxy types. PiperOrigin-RevId: 246626732 -- fe4295fa95cc65dee8c881ba12dd8f516e68c40d by Abseil Team <absl-team@google.com>: Clarify the proper way to define AbslHashValue, and fix confusing indentation. PiperOrigin-RevId: 246406528 -- d7174681a72d4a25c8fd2b4d9f515a0763eff87c by Gennadiy Rozental <rogeeff@google.com>: Internal change PiperOrigin-RevId: 246358214 -- a7fdc19683cf1a5885e9e1af52fcdb2db1eda53b by Abseil Team <absl-team@google.com>: Fix sample template instantiation. PiperOrigin-RevId: 246354617 -- 29a23c6835f872948d09b24d890385bf195bc995 by Abseil Team <absl-team@google.com>: Fix incorrectly copy-pasted static_assert in absl::optional::value_or The static_assert for a move-constructible type previously said the type must be copy-constructible. PiperOrigin-RevId: 246313827 -- 41884d5872d4ea2c67875b00144b8c8a5859a295 by Greg Falcon <gfalcon@google.com>: Import of CCTZ from GitHub. PiperOrigin-RevId: 245418790 -- 7f90a7f94cdd5e21232c749efe952a750b5c43a2 by Abseil Team <absl-team@google.com>: Internal change PiperOrigin-RevId: 245412658 -- 730a329cf047d54b46971fce1781edd857208c2a by Greg Falcon <gfalcon@google.com>: internal change PiperOrigin-RevId: 245293234 -- cf0216be6338200cbb18167d3f3b2e98e372be77 by Greg Falcon <gfalcon@google.com>: Internal change PiperOrigin-RevId: 245288164 GitOrigin-RevId: 78293ba4eb4981991ae7e6edd25eb9245fcd7515 Change-Id: I5ea9a852c36c722bae2d6be65fb7f72473d94ab6
* Export of internal Abseil changes.Gravatar Abseil Team2019-04-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 997d2a8d12d9395046b0bdfc2f206a0b2fe2f1f9 by Abseil Team <absl-team@google.com>: Typo fix: IsHashCallble -> IsHashCallable PiperOrigin-RevId: 245235915 -- 2baa4df2e3284df925bfd728bab7d7bd60ae002e by Eric Fiselier <ericwf@google.com>: Remove need for `Windows.h` header in `waiter.h` Ideally we never want to drag in `windows.h` because it's non-modular and hijacks global identifiers like `ERROR` and `OPAQUE`. This patch changes our waiter implementation to store char buffers for `SRWLOCK` and `CONDITION_VARIABLE` instead of the types directly. PiperOrigin-RevId: 245189428 -- 33cfacd70c0d148d7590472dbcce38c93f2f7a34 by Matthew Brown <matthewbr@google.com>: Internal change. PiperOrigin-RevId: 245092803 GitOrigin-RevId: 997d2a8d12d9395046b0bdfc2f206a0b2fe2f1f9 Change-Id: Icccd6cbe4b205096f6a71e114d135303ee4c1857
* Export of internal Abseil changes.Gravatar Abseil Team2019-04-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- bb92c768e2271ddbebc1b1eb7e16a7b7c86a6e1c by Abseil Team <absl-team@google.com>: Automated g4 rollback of changelist 244998488. *** Reason for rollback *** I'm seeing test failures, rolling this back. *** Original change description *** BEGIN_PUBLIC The default constructor for optional<T> is filling dummy_ with zeros (see https://godbolt.org/z/IVea7X for a reduced example), which has a performance impact for large Ts. This comes from the gcc6 bugfix that made dummy as big as T. Because constexpr constructors are required to initialize all members of a struct, we cannot prevent this in a standard-compliant way as soon as dummy has any members (note that clang will happily accept adding a `constexpr dummy_type() {}` constructor... *** PiperOrigin-RevId: 245004716 -- 6e3ee35af50ffbee604c22300f3260ebc5f6cf52 by Abseil Team <absl-team@google.com>: The default constructor for optional<T> is filling dummy_ with zeros (see https://godbolt.org/z/IVea7X for a reduced example), which has a performance impact for large Ts. This comes from the gcc6 bugfix that made dummy as big as T. Because constexpr constructors are required to initialize all members of a struct, we cannot prevent this in a standard-compliant way as soon as dummy has any members (note that clang will happily accept adding a `constexpr dummy_type() {}` constructor to dummy_type to prevent zero-initialization, but this is UB AFAICT). This all stems from the fact that we're constructing an object by using placement new on dummy_. The solution I'm using here is to do the placement new on the actual data_. This creates a new issue in when T is volatile, because we can no longer use `&data_` to do the placement new. The solution I'm using here is to make data_ a non-const and non-volatile T, and only provide fully possibly qualified access through `reference()` accessors. I think this correctly prevents UB. PiperOrigin-RevId: 244998488 -- 4f52e64c4cf6aef8df6360007bcc53d8b00db2b4 by Abseil Team <absl-team@google.com>: Increase SYMBOL_BUF_SIZE from 2KB to 3KB. PiperOrigin-RevId: 244954529 GitOrigin-RevId: bb92c768e2271ddbebc1b1eb7e16a7b7c86a6e1c Change-Id: Iaed9a027064a9ecd194c5c146169c683b77f12ef
* Export of internal Abseil changes.Gravatar Abseil Team2019-04-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- babbb6421068af3831870fd5995444437ace6769 by Derek Mauro <dmauro@google.com>: Rollback of: Make raw_hash_set_test less flaky. Split the timing loop into chunks so that we are less suceptible to antogantistic processes. PiperOrigin-RevId: 243854490 -- a2711f17a712f6d09799bf32363d67526737b486 by CJ Johnson <johnsoncj@google.com>: Relocates IsAtLeastForwardIterator to internal/inlined_vector.h PiperOrigin-RevId: 243846090 -- 6c14cdbeb9a61022c27f8957654f930d8abf2fc1 by Matt Kulukundis <kfm@google.com>: Make raw_hash_set_test less flaky. Split the timing loop into chunks so that we are less suceptible to antogantistic processes. PiperOrigin-RevId: 243824289 -- ee6072a6b6e0ac653622524ceb09db3b9e870f96 by Samuel Benzaquen <sbenza@google.com>: Improve format parser performance. Replace the main switch with a lookup in the existing tag table. Improve the ABI of ConsumeUnboundConversion a little. PiperOrigin-RevId: 243824112 -- 24b9e6476dfa4be8d644359eab8ac6816492f187 by Abseil Team <absl-team@google.com>: Fix DR numbers: 3800 ? 3080, 3801 ? 3081. PiperOrigin-RevId: 243804213 -- 0660404074707e197684f07cc0bffe4a9c35cd2f by Abseil Team <absl-team@google.com>: Internal change. PiperOrigin-RevId: 243757359 -- ba0f5bb9b8584d75c4ffc44ff3cb8c691796ffc6 by Xiaoyi Zhang <zhangxy@google.com>: Consolidate ABSL_INTERNAL_UNALIGNED_* implementation into memcpy. The compiler should be good enough to optimize these operations. See https://github.com/abseil/abseil-cpp/issues/269 for background. PiperOrigin-RevId: 243323941 -- 00853a8756548df7217513c562d604b4ee5c6ab9 by Eric Fiselier <ericwf@google.com>: Reexport memory.h from optional.h for compatibility between libc++ and libstdc++. PiperOrigin-RevId: 243313425 GitOrigin-RevId: babbb6421068af3831870fd5995444437ace6769 Change-Id: Ic53c127ad857a431ad60c98b27cc585fed50a3e3
* Export of internal Abseil changes.Gravatar Abseil Team2019-03-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- f6c627ce4470a814adc377947b58346eef69a4c9 by Jon Cohen <cohenjon@google.com>: Don't create install rules when Abseil is used as a subdirectory. Fix #287 PiperOrigin-RevId: 240559825 -- a5d9b06fe736143068997988b654b5f66ec3266a by Matt Calabrese <calabrese@google.com>: Make absl::nullopt an inline constexpr variable, as specified in the standard (with a workaround for pre-c++17 compilers). PiperOrigin-RevId: 240552286 -- d7bee50cff745fbb8d1cdf56a200d9073d311c80 by Abseil Team <absl-team@google.com>: Internal Change PiperOrigin-RevId: 240425622 -- 828dd49d392d83dbeecd9d3e9cb14551ab265905 by Jon Cohen <cohenjon@google.com>: Add default link options to absl builds. Currently all this does is add -ignore:4221 to Abseil msvc builds, but the structure is all in place to add more link options when necessary Fix #277 Note: This CL changes tact for us in that it puts the default options in the helper function as opposed to the invocations of absl_cc_blah. The original intent of keeping these out of the helper functions was to make generating the CMakeLists.txt files have a smaller diff, but looking now that is a problem for the future, and small compared to making maintenance and use of our CMake buildsystem easier PiperOrigin-RevId: 240409463 -- 4aa120e9dcf76d29e9ca0008d0f6d4d9fa8abe8c by Matt Kulukundis <kfm@google.com>: Reduce flake rate for non-determistic test to < 1/10,000 PiperOrigin-RevId: 240370938 -- bc30e219531827bfbf90915b2067c7fb8160bb6d by Derek Mauro <dmauro@google.com>: Add Bazel caching on Kokoro for new linux targets. PiperOrigin-RevId: 240356556 -- c4e06d79a50d7bb211312b7845c4bd92c0761747 by Jon Cohen <cohenjon@google.com>: include AbseilInstallDirs instead of GNUInstallDirs. It worked before because global_CMakeLists.txt also included AbseilInstallDirs PiperOrigin-RevId: 240206409 -- c254dc6cade8a263f3f97fb1417d92fe5235ff32 by Jon Cohen <cohenjon@google.com>: Fix logic for when we create the variant_exception_safety_test in CMake. Currently we are only running in on gcc > 4.9, when we want it run on every compiler except gcc <= 4.8 PiperOrigin-RevId: 240194174 -- 01518006b351d3670ba1d349cfbcb7dd6f3a8b84 by CJ Johnson <johnsoncj@google.com>: Removes old implementation warning comment now that InlinedVector has an implementation detail file PiperOrigin-RevId: 240167265 -- eb05355ae8c7397752ab7a65afc9e0a99472ba9d by Jon Cohen <cohenjon@google.com>: Remove the forward declaration of Span PiperOrigin-RevId: 240156660 -- b7e75aa3933d6e79dd086821cf58d15e72f476f4 by Jon Cohen <cohenjon@google.com>: Prepare CMake install rule for LTS releases: * Remove the warning against installing in system install locations * Insert versioning to keep different LTS installs from colliding. Headers are installed in <prefix>/absl_$version/include, .a files in <prefix>/absl_$version/lib, and config files in <prefix>/absl_$version/lib/cmake PiperOrigin-RevId: 240153986 -- de63488ab6236e041f08260794b0b634a2b8ed16 by CJ Johnson <johnsoncj@google.com>: Reduce reader confusion by using std::addressof(...) even when the type is known to not overload operator&(...) PiperOrigin-RevId: 240131902 GitOrigin-RevId: f6c627ce4470a814adc377947b58346eef69a4c9 Change-Id: I95dbbacaaf65aceeeca9e9bee5fd9ea456225f62
* Changed HTTP URLs to HTTPS where possible (#270)Gravatar nik72732019-03-08
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* Export of internal Abseil changes.Gravatar Abseil Team2018-12-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 22fa219d17b2281c0695642830c4300711bd65ea by CJ Johnson <johnsoncj@google.com>: Rearrange the private method declarations in InlinedVector PiperOrigin-RevId: 224202447 -- eed3c9f488f23b521bee41d3683eb6cc22517ded by Derek Mauro <dmauro@google.com>: Fix leak_check target (it was always a no-op when LSAN isn't available). Fixes https://github.com/abseil/abseil-cpp/issues/232 PiperOrigin-RevId: 224201634 -- fc08039e175204b14a9561f618fcfc0234586801 by Greg Falcon <gfalcon@google.com>: Add parens around more invocations of min() and max() missed in my prior CL. PiperOrigin-RevId: 224162430 -- 0ec5476a8293c7796cd84928a1a558b14f14f222 by Abseil Team <absl-team@google.com>: Update absl/numeric/CMakeLists.txt to use new functions i.e. absl_cc_(library|test) PiperOrigin-RevId: 224139165 -- 2b46aa6fabb20c589661f8bbc84030ecf39ce394 by Abseil Team <absl-team@google.com>: Update absl/meta/CMakeLists.txt to use new functions i.e. absl_cc_(library|test) PiperOrigin-RevId: 224117258 -- 6c951c798f8c6903bd8793a8a4b5f69244be8aa9 by Abseil Team <absl-team@google.com>: Fix 2 Unused C++ BUILD Dependencies PiperOrigin-RevId: 224070093 -- 0ee7bd191708708f91fc5209c197fd93f6e4a8b3 by Greg Falcon <gfalcon@google.com>: Inside Abseil headers, wrap most invocations of methods and functions named `min` and `max` in parentheses, for better interoperability with Windows toolchains. CCTZ fixes will appear in a follow-up CL. PiperOrigin-RevId: 224051960 -- f562f56577b84a8bc07e5873775c01d068531bca by Jon Cohen <cohenjon@google.com>: Generate Abseil compile options. The single source of truth is now absl/copts/copts.py The way this works goes something like this: copts.py acts as the configuration file. We use python because unlike JSON it allows comments. It has two maps in it: one from names to external flags, and one from names to internal flags. generate_copts.py imports the maps and loops through them to write GENERATED_copts.bzl and GENERATED_AbseilCopts.cmake AbseilConfigureCopts.cmake and configure_copts.bzl import their respective copts args and set the platform-appropriate copts into ABSL_DEFAULT_COPTS, ABSL_TEST_COPTS, ABSL_EXCEPTIONS_FLAG, and ABSL_EXCEPTIONS_LINKOPTS For Bazel, each BUILD file load()s configure_copts.bzl For CMake, AbseilHelpers.cmake include()s AbseilConfigureCopts.cmake to get the final copts and both inserts them as needed into legacy target rules and also makes them available to the rest of our CMakeLists.txt file. We may instead want to include() AbseilConfigureCopts.cmake directly into each CMakeLists.txt file for consistency, but I'm not sure what the deal is with cmake and include guards, or if they are even needed. That's also not as idiomatic -- CMake tends to use directory scope where globals set at a higher level CMakeLists.txt file are used in the subdirectory CMakeLists.txt files. PiperOrigin-RevId: 224039419 -- f7402f6bb65037e668a7355f0a003f5c05a3b6a7 by Abseil Team <absl-team@google.com>: Import of CCTZ from GitHub. PiperOrigin-RevId: 224036622 GitOrigin-RevId: 22fa219d17b2281c0695642830c4300711bd65ea Change-Id: I6b505360539ff2aef8aa30c51a5f7d55db1c75cf
* Export of internal Abseil changes.Gravatar Abseil Team2018-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 906c47420646d510edd2479d5542c56f5fa31b65 by CJ Johnson <johnsoncj@google.com>: Import of CCTZ from GitHub. PiperOrigin-RevId: 216573923 -- 74560d4afd2b605909e677c6fc3076049fb3010a by Eric Fiselier <ericwf@google.com>: Avoid -Wformat-pedantic in benchmark. PiperOrigin-RevId: 216523769 -- 9bcc9da8b03e6d1ea43ee78931256c5541cb9686 by Eric Fiselier <ericwf@google.com>: Delete unused CityHash functions. PiperOrigin-RevId: 216464492 -- a42563b394c89fbb4c55cb5a6a5edbf96d271eea by Abseil Team <absl-team@google.com>: Introduce new Abseil interfaces for converting between civil times and absolute times.s Deprecates absl::ConvertDateTime() and absl::FromDateTime(). PiperOrigin-RevId: 216424948 -- 088e11235124267517d7f137854fa5554679c24f by Eric Fiselier <ericwf@google.com>: Remove unneeded break statements in test. PiperOrigin-RevId: 216403321 GitOrigin-RevId: 906c47420646d510edd2479d5542c56f5fa31b65 Change-Id: Idb44420be623e369c66f5a9c92bdc9ab46d3ec92
* Export of internal Abseil changes.Gravatar Abseil Team2018-09-27
-- 4eacae3ff1b14b1d309e8092185bc10e8a6203cf by Derek Mauro <dmauro@google.com>: Release SwissTable - a fast, efficient, cache-friendly hash table. https://www.youtube.com/watch?v=ncHmEUmJZf4 PiperOrigin-RevId: 214816527 -- df8c3dfab3cfb2f4365909a84d0683b193cfbb11 by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 214785288 -- 1eabd5266bbcebc33eecc91e5309b751856a75c8 by Abseil Team <absl-team@google.com>: Internal change PiperOrigin-RevId: 214722931 -- 2ebbfac950f83146b46253038e7dd7dcde9f2951 by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 214701684 GitOrigin-RevId: 4eacae3ff1b14b1d309e8092185bc10e8a6203cf Change-Id: I9ba64e395b22ad7863213d157b8019b082adc19d
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-08 00:19:45 +0000