Chiebot-Mirror/abseil-cpp - abseil-cpp - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Abseil Team	a05366d851	Export of internal Abseil changes -- 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	3 years ago
Abseil Team	4bb739310c	Export of internal Abseil changes -- 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	3 years ago
Abseil Team	1918ad2ae3	Export of internal Abseil changes -- 0bfa836596a9c787a2f0bdc283011dd1f6810c6e by Benjamin Barenblat <bbaren@google.com>: Ignore missing CPU frequency on more architectures Linux on MIPS, PA-RISC, RISC-V, and SystemZ doesn’t expose the nominal CPU frequency via /sys, so don’t worry if `NominalCPUFrequency` returns 1.0 on those platforms. Some POWER machines expose the CPU frequency; others do not. Since we can’t predict which type of machine the tests will run on, simply disable testing for `NominalCPUFrequency` on POWER. PiperOrigin-RevId: 347079873 -- 492b6834ed4a07cbc3abccd846f7e37d8c556ee5 by Benjamin Barenblat <bbaren@google.com>: Use ABSL_HAVE_THREAD_LOCAL macro instead of copying code Reduce code duplication by checking the ABSL_HAVE_THREAD_LOCAL macro instead of copying code from base/config.h. PiperOrigin-RevId: 347079561 -- 8d656efce4da9cb032094377e58493d98427a536 by Abseil Team <absl-team@google.com>: Rollback PiperOrigin-RevId: 347078779 -- 221bc69ec6dd7e2777ffcff6942584f979ef6382 by Abseil Team <absl-team@google.com>: Add flag for 'shallow subcord' feature for experimental ring buffer rollout There is a potential trade-off of CPU cost vs over-sharing cord data for subcord of large cords. This flag allows making subcords shallow for ringbuffers (with a potential larger waste of referenced source cords), which allows us to make subcord fast for this apps that do no persist (unmodified / plain copied) sub cords. This change also introduces constants for the default settings, intended to keep the internal cord settings concistent with external flags. PiperOrigin-RevId: 347053271 -- 00a56c24293566734009f6bf2169a83fb37a35ba by Abseil Team <absl-team@google.com>: Revert the usage of variant<> in Cord iterator and reader. The introduction of the variant may lead to some missed compiler optimizations. PiperOrigin-RevId: 347053041 -- c7b7b5ed7e3ab46b1e75b80f1a7de0bda26c8f70 by Chris Kennelly <ckennelly@google.com>: Release library for integer power-of-2 functions and bit counting. PiperOrigin-RevId: 347035065 -- 5a035c0d9840b251967f9e7039fc6a4e01dd52f3 by Abseil Team <absl-team@google.com>: Restructure Cord::ChunkIterator for future ring buffer support. PiperOrigin-RevId: 346890054 GitOrigin-RevId: 0bfa836596a9c787a2f0bdc283011dd1f6810c6e Change-Id: I3a58e2a44cb4c6f2116c43e2a4ccbc319d3ccecf	4 years ago
Abseil Team	dc969f34a7	Export of internal Abseil changes -- caf65de1a20b1ad286796a9eaee38f8b59e93f3b by Samuel Benzaquen <sbenza@google.com>: Add a benchmark for StrAppend. PiperOrigin-RevId: 327111569 -- 2faa53fb3f4090f9609c7dea8951a82e1d72ce3a by Derek Mauro <dmauro@google.com>: Add the inline namespace to the code generated by gaussian_distribution_gentables A previous changed manually added it to the output PiperOrigin-RevId: 327022780 -- 29edfd86e49e4d7665e843463f8df3c72467e909 by Derek Mauro <dmauro@google.com>: Re-write the logic for detecting which stacktrace implementation to use on Linux. The visible change is to detect the presence of the `<execinfo.h>` header, which allows using the `backtrace`-based implementation when it is available. The logic has been simplified as well. Fixes #746 PiperOrigin-RevId: 326911875 -- ce198204b77aac240e98fc8d5931b17a8b26bac3 by Abseil Team <absl-team@google.com>: Demangle exception spec. PiperOrigin-RevId: 326909460 -- c41b89954545bdc4430d10e785d3ba64a55122d5 by Abseil Team <absl-team@google.com>: Add support for inheriting ctor. PiperOrigin-RevId: 326904919 GitOrigin-RevId: caf65de1a20b1ad286796a9eaee38f8b59e93f3b Change-Id: Ifd28b6a85a032839cbeafd1b16f88046dfd6c1d4	4 years ago
Abseil Team	a8b03d90e0	Export of internal Abseil changes -- 5b9d5ce21074c0541432555d383d1b9c5898b553 by Gennadiy Rozental <rogeeff@google.com>: Convert FlagSaver into public API PiperOrigin-RevId: 314799739 -- 5f796c9862b1177f161f4b10fe1a84698ebbb5cf by Abseil Team <absl-team@google.com>: Google-internal changes only. PiperOrigin-RevId: 314786474 -- 67f2ae0ac5ae73bcd9d57a058ac4fea8fc1243ba by Gennadiy Rozental <rogeeff@google.com>: Makes sure stacktrace_generic is only used with glibc. Fixes #701 PiperOrigin-RevId: 314726944 -- efb1ef3636b0698b79d3ee3590f12c4dff32a3cb by Samuel Benzaquen <sbenza@google.com>: Take the bits into account when reserving the space for the operation, not just the exponent. PiperOrigin-RevId: 314622744 GitOrigin-RevId: 5b9d5ce21074c0541432555d383d1b9c5898b553 Change-Id: I080a5e333e2dc1545b5aa0417882f7ac7116a20c	5 years ago
Abseil Team	1d31b5c365	Export of internal Abseil changes -- 9e8b4a286d70df9487bff080816bd07ae38af5f8 by Evan Brown <ezb@google.com>: Add btree_node::transfer_n/transfer_n_backward and replace usage of uninitialized_move_n and value_destroy_n. PiperOrigin-RevId: 314600027 -- 6c452aa1ee7e46ab941ba7d1fa636da8ea3d7370 by Laramie Leavitt <lar@google.com>: Remove the MockingBitGenBase base class in favor of type-erasure in BitGenRef. In Abseil random, mocking was split across two different classes, MockingBitGenBase and MockingBitGen. This split existed because Google Mock is a test-only library that we don't link into production, so MockingBitGenBase provided a low-overhead scaffold used to lookup mocks when in test code, but which is unused in production code. That has been replaced by type-erasure which looks for a method named CallImpl with the correct signature. Weaken the coupling between MockingBitGen, DistributionCaller, and MockOverloadSet. Rename CallImpl to InvokeMock() Previously, the implementation of DistributionCaller was also split across different files using explicit instantiation of the DistributionCaller struct and some details in the Mocking classes. Now Distribution caller uses the presence of the InvokeMock() method to choose whether to use the mockable call path or the default call path. PiperOrigin-RevId: 314584095 -- 07853c47dc98698d67d65a3b9b662a65ab9def0a by Abseil Team <absl-team@google.com>: Add PC / backtrace / symbolization support for Apple platforms. Full backtrace support requires iOS 9+ PiperOrigin-RevId: 314415072 -- 43889f17a132b31f6558c6482721cbbc776128fd by Gennadiy Rozental <rogeeff@google.com>: Consolidate all reflection interface in the new module 'reflection' and expose interface to locate reflection handle by name. PiperOrigin-RevId: 314390358 GitOrigin-RevId: 9e8b4a286d70df9487bff080816bd07ae38af5f8 Change-Id: I8e0910437740cf9ea9da5000adddfcef127e1158	5 years ago
Abseil Team	768eb2ca28	Export of internal Abseil changes -- f012012ef78234a6a4585321b67d7b7c92ebc266 by Laramie Leavitt <lar@google.com>: Slight restructuring of absl/random/internal randen implementation. Convert round-keys.inc into randen_round_keys.cc file. Consistently use a 128-bit pointer type for internal method parameters. This allows simpler pointer arithmetic in C++ & permits removal of some constants and casts. Remove some redundancy in comments & constexpr variables. Specifically, all references to Randen algorithm parameters use RandenTraits; duplication in RandenSlow removed. PiperOrigin-RevId: 312190313 -- dc8b42e054046741e9ed65335bfdface997c6063 by Abseil Team <absl-team@google.com>: Internal change. PiperOrigin-RevId: 312167304 -- f13d248fafaf206492c1362c3574031aea3abaf7 by Matthew Brown <matthewbr@google.com>: Cleanup StrFormat extensions a little. PiperOrigin-RevId: 312166336 -- 9d9117589667afe2332bb7ad42bc967ca7c54502 by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 312105213 -- 9a12b9b3aa0e59b8ee6cf9408ed0029045543a9b by Abseil Team <absl-team@google.com>: Complete IGNORE_TYPE macro renaming. PiperOrigin-RevId: 311999699 -- 64756f20d61021d999bd0d4c15e9ad3857382f57 by Gennadiy Rozental <rogeeff@google.com>: Switch to fixed bytes specific default value. This fixes the Abseil Flags for big endian platforms. PiperOrigin-RevId: 311844448 -- bdbe6b5b29791dbc3816ada1828458b3010ff1e9 by Laramie Leavitt <lar@google.com>: Change many distribution tests to use pcg_engine as a deterministic source of entropy. It's reasonable to test that the BitGen itself has good entropy, however when testing the cross product of all random distributions x all the architecture variations x all submitted changes results in a large number of tests. In order to account for these failures while still using good entropy requires that our allowed sigma need to account for all of these independent tests. Our current sigma values are too restrictive, and we see a lot of failures, so we have to either relax the sigma values or convert some of the statistical tests to use deterministic values. This changelist does the latter. PiperOrigin-RevId: 311840096 GitOrigin-RevId: f012012ef78234a6a4585321b67d7b7c92ebc266 Change-Id: Ic84886f38ff30d7d72c126e9b63c9a61eb729a1a	5 years ago