Export of internal Abseil changes
-- 049ac45508e335c6f010f2d28d71016b9fa65b4e by Derek Mauro <dmauro@google.com>: Fix librt detection PiperOrigin-RevId: 280207723 -- 6382c3a9fb2643af9dc031f92ca846c4a78e249c by Andy Getzendanner <durandal@google.com>: Fix Conan builds Import of https://github.com/abseil/abseil-cpp/pull/400 PiperOrigin-RevId: 280025424 -- aebcd52b1686ac82663a8d0193b60d0122a43372 by Samuel Benzaquen <sbenza@google.com>: Enable the assertion in the iterator's operator== and operator!= PiperOrigin-RevId: 279998951 -- 5b61d909e2159ac6fd45e0e456818db1e725ecd1 by Derek Mauro <dmauro@google.com>: Add best effort support for compiling much of Abseil with MinGW. This involves disabling ABSL_ATTRIBUTE_WEAK and adding link flags. A change to CCTZ is still necessary. Tests were not run yet, but most of them now build. PiperOrigin-RevId: 279966541 -- 4336f8b10cff906e2defdd7d1d449cde4907da5d by Abseil Team <absl-team@google.com>: Add comments and relax memory orders in base_internal::CallOnceImpl. Add a comment to document the memory order guarantee if base_internal::SpinLockWait() is called and returns kOnceDone. Add a comment for the load/store sequence in base_internal::CallOnceImpl based on Mike Burrows' explanation. The atomic load of 'control' in the #ifndef NDEBUG block does not need std::memory_order_acquire. It can use std::memory_order_relaxed. The atomic compare_exchange_strong of 'control' does not need std::memory_order_acquire in the success case. It can use std::memory_order_relaxed. PiperOrigin-RevId: 279814155 -- 407de3a5e9af957cded54a136ca0468bde620d4d by Abseil Team <absl-team@google.com>: Added a script to generate abseil.podspec from all BUILD.bazel files automatically. PiperOrigin-RevId: 279811441 -- 26139497d4a363d6c7bc989c554da593e8819a07 by Derek Mauro <dmauro@google.com>: Add missing copyright and Apache License to //absl/functional/BUILD.bazel PiperOrigin-RevId: 279795227 -- 98ed625b02af6e5834edf52a920d8ca2dab4cd90 by Matt Kulukundis <kfm@google.com>: Switch the implementation of hashtablez to *only* work on platforms that have a PER_THREAD_TLS. The old case is very slow (global mutex) and nobody collects data from that configuration anyway. PiperOrigin-RevId: 279775149 -- 07225900ef672c005c38f467ad3f92f38d0922b3 by Derek Mauro <dmauro@google.com>: Remove the minumum glibc version check PiperOrigin-RevId: 279750412 -- ec09956a951b4f52228ecc81968b8db7ae19ed15 by Derek Mauro <dmauro@google.com>: CMake only: link with -lrt to support older glibc versions PiperOrigin-RevId: 279741661 -- 97b113fb2e8246f6152c36330ba13793b37154b6 by Xiaoyi Zhang <zhangxy@google.com>: Internal change. PiperOrigin-RevId: 279390188 -- ca8f72f2721546cc9b01bd01b2ea144962e6e0c5 by Andy Getzendanner <durandal@google.com>: Expose PutTwoDigits for internal use within Abseil. PiperOrigin-RevId: 279374239 -- 14c6384cc03bbdfdefd2e4b635f104af5dd7e026 by Derek Mauro <dmauro@google.com>: Remove log_severity sources from the base target. They are already compiled as part of a separate library. PiperOrigin-RevId: 279372619 -- 3c5d926c718f8bf394e3bee87b6ba8d94601e0d3 by Abseil Team <absl-team@google.com>: s/indepdent/independent/g in SimpleAtof's documentation. PiperOrigin-RevId: 279350836 -- de2c44be8a8edf9efa1fe2007cba3564f3e5b0b8 by Abseil Team <absl-team@google.com>: Internal change PiperOrigin-RevId: 279346990 -- 2ba078341423fcf6d0ba5ca1831f86570a26e615 by Samuel Benzaquen <sbenza@google.com>: Add hash support for std::wstring, std::u16string and std::u32string. PiperOrigin-RevId: 279320672 -- 3272d3ffcfa55283a04f90e5868701912da95ef7 by Andy Soffer <asoffer@google.com>: Removing a bunch of __restricts that amount to no performance differences. One of these is the cause of https://github.com/abseil/abseil-cpp/issues/396. In particular, in one of the Vector128Store functions, restricts on two pointers that were indeed aliased seems to be the root cause of the issues. Closes #396 PiperOrigin-RevId: 279318999 -- 342f338ab31cc24344d5de8f28cf455bbb629a17 by Jorg Brown <jorg@google.com>: Support uint128 in SimpleAtoi PiperOrigin-RevId: 279234038 -- 81cb0a04cf2dc4515d303679fc60968712191571 by Derek Mauro <dmauro@google.com>: Change the check for futex availability to support older Linux systems PiperOrigin-RevId: 279147079 -- cb4ca4aa4c8d2d710a5d483c56c4ce4f979e14b1 by Abseil Team <absl-team@google.com>: Add IWYU pragma: export for int128 .inc files. PiperOrigin-RevId: 279107098 -- b8df86ef610c366729f07326c726f3e34817b4dd by Abseil Team <absl-team@google.com>: An optimization for Waiter::Post() in the SEM waiter mode. Like the FUTEX waiter mode, Waiter::Post() only needs to call Poke() if it incremented the atomic variable from 0. PiperOrigin-RevId: 279086133 GitOrigin-RevId: 049ac45508e335c6f010f2d28d71016b9fa65b4e Change-Id: I4c1a4073fff62cb6a1fcb1c104aa7d62dad588c2
This commit is contained in:
Abseil Team
Andy Getz
parent
85092b4b64
commit
fa8c75182f
26 changed files with 503 additions and 117 deletions
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@ -93,43 +93,6 @@ bool SimpleAtod(absl::string_view str, double* out) {
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return true;
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}
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namespace {
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// Writes a two-character representation of 'i' to 'buf'. 'i' must be in the
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// range 0 <= i < 100, and buf must have space for two characters. Example:
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// char buf[2];
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// PutTwoDigits(42, buf);
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// // buf[0] == '4'
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// // buf[1] == '2'
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inline void PutTwoDigits(size_t i, char* buf) {
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static const char two_ASCII_digits[100][2] = {
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{'0', '0'}, {'0', '1'}, {'0', '2'}, {'0', '3'}, {'0', '4'},
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{'0', '5'}, {'0', '6'}, {'0', '7'}, {'0', '8'}, {'0', '9'},
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{'1', '0'}, {'1', '1'}, {'1', '2'}, {'1', '3'}, {'1', '4'},
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{'1', '5'}, {'1', '6'}, {'1', '7'}, {'1', '8'}, {'1', '9'},
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{'2', '0'}, {'2', '1'}, {'2', '2'}, {'2', '3'}, {'2', '4'},
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{'2', '5'}, {'2', '6'}, {'2', '7'}, {'2', '8'}, {'2', '9'},
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{'3', '0'}, {'3', '1'}, {'3', '2'}, {'3', '3'}, {'3', '4'},
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{'3', '5'}, {'3', '6'}, {'3', '7'}, {'3', '8'}, {'3', '9'},
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{'4', '0'}, {'4', '1'}, {'4', '2'}, {'4', '3'}, {'4', '4'},
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{'4', '5'}, {'4', '6'}, {'4', '7'}, {'4', '8'}, {'4', '9'},
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{'5', '0'}, {'5', '1'}, {'5', '2'}, {'5', '3'}, {'5', '4'},
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{'5', '5'}, {'5', '6'}, {'5', '7'}, {'5', '8'}, {'5', '9'},
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{'6', '0'}, {'6', '1'}, {'6', '2'}, {'6', '3'}, {'6', '4'},
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{'6', '5'}, {'6', '6'}, {'6', '7'}, {'6', '8'}, {'6', '9'},
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{'7', '0'}, {'7', '1'}, {'7', '2'}, {'7', '3'}, {'7', '4'},
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{'7', '5'}, {'7', '6'}, {'7', '7'}, {'7', '8'}, {'7', '9'},
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{'8', '0'}, {'8', '1'}, {'8', '2'}, {'8', '3'}, {'8', '4'},
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{'8', '5'}, {'8', '6'}, {'8', '7'}, {'8', '8'}, {'8', '9'},
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{'9', '0'}, {'9', '1'}, {'9', '2'}, {'9', '3'}, {'9', '4'},
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{'9', '5'}, {'9', '6'}, {'9', '7'}, {'9', '8'}, {'9', '9'}
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};
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assert(i < 100);
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memcpy(buf, two_ASCII_digits[i], 2);
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}
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} // namespace
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bool SimpleAtob(absl::string_view str, bool* out) {
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ABSL_RAW_CHECK(out != nullptr, "Output pointer must not be nullptr.");
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if (EqualsIgnoreCase(str, "true") || EqualsIgnoreCase(str, "t") ||
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@ -496,13 +459,13 @@ static ExpDigits SplitToSix(const double value) {
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int two_digits = dddddd / 10000;
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dddddd -= two_digits * 10000;
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PutTwoDigits(two_digits, &exp_dig.digits[0]);
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numbers_internal::PutTwoDigits(two_digits, &exp_dig.digits[0]);
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two_digits = dddddd / 100;
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dddddd -= two_digits * 100;
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PutTwoDigits(two_digits, &exp_dig.digits[2]);
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numbers_internal::PutTwoDigits(two_digits, &exp_dig.digits[2]);
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PutTwoDigits(dddddd, &exp_dig.digits[4]);
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numbers_internal::PutTwoDigits(dddddd, &exp_dig.digits[4]);
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return exp_dig;
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}
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@ -908,6 +871,25 @@ ABSL_CONST_INIT const char kHexTable[513] =
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"e0e1e2e3e4e5e6e7e8e9eaebecedeeef"
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"f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff";
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ABSL_CONST_INIT const char two_ASCII_digits[100][2] = {
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{'0', '0'}, {'0', '1'}, {'0', '2'}, {'0', '3'}, {'0', '4'}, {'0', '5'},
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{'0', '6'}, {'0', '7'}, {'0', '8'}, {'0', '9'}, {'1', '0'}, {'1', '1'},
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{'1', '2'}, {'1', '3'}, {'1', '4'}, {'1', '5'}, {'1', '6'}, {'1', '7'},
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{'1', '8'}, {'1', '9'}, {'2', '0'}, {'2', '1'}, {'2', '2'}, {'2', '3'},
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{'2', '4'}, {'2', '5'}, {'2', '6'}, {'2', '7'}, {'2', '8'}, {'2', '9'},
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{'3', '0'}, {'3', '1'}, {'3', '2'}, {'3', '3'}, {'3', '4'}, {'3', '5'},
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{'3', '6'}, {'3', '7'}, {'3', '8'}, {'3', '9'}, {'4', '0'}, {'4', '1'},
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{'4', '2'}, {'4', '3'}, {'4', '4'}, {'4', '5'}, {'4', '6'}, {'4', '7'},
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{'4', '8'}, {'4', '9'}, {'5', '0'}, {'5', '1'}, {'5', '2'}, {'5', '3'},
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{'5', '4'}, {'5', '5'}, {'5', '6'}, {'5', '7'}, {'5', '8'}, {'5', '9'},
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{'6', '0'}, {'6', '1'}, {'6', '2'}, {'6', '3'}, {'6', '4'}, {'6', '5'},
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{'6', '6'}, {'6', '7'}, {'6', '8'}, {'6', '9'}, {'7', '0'}, {'7', '1'},
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{'7', '2'}, {'7', '3'}, {'7', '4'}, {'7', '5'}, {'7', '6'}, {'7', '7'},
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{'7', '8'}, {'7', '9'}, {'8', '0'}, {'8', '1'}, {'8', '2'}, {'8', '3'},
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{'8', '4'}, {'8', '5'}, {'8', '6'}, {'8', '7'}, {'8', '8'}, {'8', '9'},
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{'9', '0'}, {'9', '1'}, {'9', '2'}, {'9', '3'}, {'9', '4'}, {'9', '5'},
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{'9', '6'}, {'9', '7'}, {'9', '8'}, {'9', '9'}};
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bool safe_strto32_base(absl::string_view text, int32_t* value, int base) {
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return safe_int_internal<int32_t>(text, value, base);
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}
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@ -924,5 +906,9 @@ bool safe_strtou64_base(absl::string_view text, uint64_t* value, int base) {
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return safe_uint_internal<uint64_t>(text, value, base);
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}
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bool safe_strtou128_base(absl::string_view text, uint128* value, int base) {
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return safe_uint_internal<absl::uint128>(text, value, base);
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}
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} // namespace numbers_internal
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} // namespace absl
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