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* kernel_timeout_test: Add Apple to the list of slow platforms becauseGravatar Derek Mauro2023-08-21
| | | | | | | it runs on non-dedicated Kokoro PiperOrigin-RevId: 558874605 Change-Id: Iba35f558ab8c967f98a3176af056e76341fb67c3
* Add StdcppWaiter to the end of the list of waiter implementationsGravatar Derek Mauro2023-08-10
| | | | | | | | | Since ABSL_INTERNAL_HAVE_STDCPP_WAITER is defined on all systems it is effectively a fallback. I left the condition there in case we have to disable it on some platform in the future. PiperOrigin-RevId: 555629066 Change-Id: I76ca78c7f36d1d02dc4950a44c66903a2aaf2a52
* Add Support for mmap on Qualcomm Hexagon DSP targets.Gravatar Abseil Team2023-07-17
| | | | | PiperOrigin-RevId: 548709037 Change-Id: I6eb03553299265660aa0abc180ae0f197a416ba4
* absl: reformat Mutex-related filesGravatar Abseil Team2023-06-20
| | | | | | | | | | | Reformat Mutex-related files so that incremental formatting changes don't distract during review of logical changes. These files are subtle and any unnecessary diffs make reviews harder. No changes besides running clang-format. PiperOrigin-RevId: 541981737 Change-Id: I41cccb7a97158c78d17adaff6fe553c2c9c2b9ed
* Migrate most RAW_LOGs and RAW_CHECKs in tests to regular LOG and CHECK.Gravatar Andy Getzendanner2023-05-23
| | | | | | | | | | | The non-RAW_ versions provide better output but weren't available when most of these tests were written. There are just a couple spots where RAW_ is actually needed, e.g. signal handlers and malloc hooks. Also fix a couple warnings in layout_test.cc newly surfaced because the optimizer understands CHECK_XX differently than INTERNAL_CHECK. PiperOrigin-RevId: 534584435 Change-Id: I8d36fa809ffdaae5a3813064bd602cb8611c1613
* Nop change.Gravatar Abseil Team2023-05-08
| | | | | PiperOrigin-RevId: 530238518 Change-Id: I2bfca582c0734f7e6943c5359730a2857809e2d2
* PR #1433: Fix incorrect timespec definition on 32-bit platforms with 64-bit ↵Gravatar Oleg Lyovin2023-05-02
| | | | | | | | | | | | | | | | | time_t Imported from GitHub PR https://github.com/abseil/abseil-cpp/pull/1433 Some 32-bit configurations may use 64-bit time_t, which leads to different layout of userspace timespec and the one expected by SYS_futex implementation in kernel. In particular the issue occurs when using musl libc which has switched to unconditional 64-bit time_t definition. This patch introduces custom struct timespec with two longs when old SYS_futex is used to match the kernel timespec definition. Merge 2eaca415da825b3f31a90f58a35bdef2b6d2a6c5 into f8bf909108b3604a00590a074f2986c0895514d2 Merging this change closes #1433 COPYBARA_INTEGRATE_REVIEW=https://github.com/abseil/abseil-cpp/pull/1433 from olegartys:futex_time64_bug 2eaca415da825b3f31a90f58a35bdef2b6d2a6c5 PiperOrigin-RevId: 528796119 Change-Id: Idaa952f64bd97c6dc9703a8b44deac43e29ff9ae
* Merge pull request #1416 from AtariDreams:fillGravatar Copybara-Service2023-04-24
|\ | | | | | | | | PiperOrigin-RevId: 526675031 Change-Id: Ib84423ccea2d0183166194a0916a97a7ed32915c
* | Support pthread_cond_clockwait() and sem_clockwait() on AndroidGravatar Derek Mauro2023-04-20
| | | | | | | | | | | | | | | | | | for __ANDROID_API__ >= 30 https://android.googlesource.com/platform/bionic/+/69010802d037dbc10377416bd9cc696fa34b9384%5E%21/libc/include/pthread.h PiperOrigin-RevId: 525815479 Change-Id: I88cd1a06a4f7bb5380ff7c1e6a8f45e2b04b7df8
* | Fix flaky test failures.Gravatar Evan Brown2023-04-20
| | | | | | | | | | PiperOrigin-RevId: 525808747 Change-Id: I01aeef6b8558673bf1fc38a948dcecf00300b641
| * Prefer copy_n and fill_n over copy and fill where appropriate.Gravatar Rose2023-04-19
|/ | | | This lets us avoid having to do the addition manually.
* Don't override clock_gettime in the KernelTimeout and WaiterGravatar Derek Mauro2023-04-13
| | | | | | | tests under sanitizers. The overrides break the sanitizers. PiperOrigin-RevId: 524037272 Change-Id: I85b87d3870c488cb316505e94b394c6f98e9f60f
* Synchronization: Consolidate the logic for whether steady clocks are supportedGravatar Derek Mauro2023-04-12
| | | | | | | for relative timeouts PiperOrigin-RevId: 523789416 Change-Id: Ide4cfdcae9ea7bffca3355c80ea9c8833a9536e6
* Synchronization: Support true relative timeouts using the POSIXGravatar Derek Mauro2023-04-08
| | | | | | | | | | | proposed standard pthread_cond_clockwait() and sem_clockwait(). These are currently implemented in glibc >= 2.30. These methods take a clock and use an absolute time with reference to that clock, so KernelTimeout now can produce these values. PiperOrigin-RevId: 522824226 Change-Id: Ife98713f6f95d800b1f8e52d5364a3dbebc4f8a6
* Synchronization: Support true relative timeouts on Apple platformsGravatar Derek Mauro2023-04-06
| | | | | | | using the non-portable pthread_cond_timedwait_relative_np() PiperOrigin-RevId: 522340555 Change-Id: I08682f74d8d94965330f12274c7a92632b1a29f1
* Fix flakiness issues in timing tests.Gravatar Evan Brown2023-03-27
| | | | | PiperOrigin-RevId: 519939158 Change-Id: I9b049fa55167ed4064f3909887eec7bc52601677
* Add an implementation of Waiter that uses std::mutex/std::condition_variableGravatar Derek Mauro2023-03-21
| | | | | | | | | | | | | | | This implementation may at some point become the default on some platforms. Currently not all platforms have widespread support for both real absolute timeouts or real relative timeouts (here "real" means without converting to the other timeout type which is the only one supported by the underlying APIs). In this case we can defer to their standard library to implement correct support. This is not currently the default on any platform Note: The size of WaiterState had to increase to fit the new implementation PiperOrigin-RevId: 518266646 Change-Id: I7f246646a960d6e1b155f9de0bf2f681c5d3d245
* Synchronization: Refactor Waiter to allow us to write testsGravatar Derek Mauro2023-03-20
| | | | | | | | | | | | | Instead of being only able to test the platform Waiter implementation, this allows us to be able to test all Waiter implementations that build on a specific platform. A unittest is added that tests all implementations that work for the platform, and allows us to check that the expected one is being used by printing the name of the selected implementation. PiperOrigin-RevId: 518072415 Change-Id: Ie9e6fcd9d8283b4038e6f4e68a304d2adcc04b19
* Increase the timeout of Windows for the kernel timeout tests.Gravatar Tom Rybka2023-03-16
| | | | | | | Windows tests often run in Emulation, and even with KVM we can still timeout. PiperOrigin-RevId: 517192968 Change-Id: I3b4e435f8ac8ad1e7eab6f043c051fa75efed64b
* Synchronization: Add support for true relative timeouts usingGravatar Derek Mauro2023-03-14
| | | | | | | | | | | | | | | | | | | | | | | | | | monotonic clocks on Linux when the implementation uses futexes After this change, when synchronization methods that wait are passed an absl::Duration to limit the wait time, these methods will wait for that interval, even if the system clock is changed (subject to any limitations with how CLOCK_MONOTONIC keeps track of time). In other words, an observer measuring the time with a stop watch will now see the correct interval, even if the system clock is changed. Previously, the duration was added to the current time, and methods would wait until that time was reached on the possibly changed realtime system clock. The behavior of the synchronization methods that take an absl::Time is unchanged. These methods always wait until the absolute point in time is reached and respect changes to the system clock. In other words, an observer will always see the timeout occur when a wall clock reaches that time, even if the clock is manipulated externally. Note: ABSL_PREDICT_FALSE was removed from the error case in Futex as timeouts are handled by this case, and timeouts are part of normal operation. PiperOrigin-RevId: 516534869 Change-Id: Ib70b83e4be3f9e3f1727646975a21a1d30acb242
* Synchronization: Change KernelTimeout to always store absoluteGravatar Derek Mauro2023-03-13
| | | | | | | | | | timeouts, but when a relative timeout is provided, the timeout is an absolute timeout against a steady clock (when possible). This allows methods that return relative timeouts to automatically recompute the remaining duration, for instance, on suprious wakeups. PiperOrigin-RevId: 516304139 Change-Id: I7d739cb50dd749eba5dba7ac6c34d18dc53703ed
* Rollback Mutex relative timeout support because of internal incompatibilityGravatar Abseil Team2023-03-09
| | | | | PiperOrigin-RevId: 515427893 Change-Id: I89e8756fcf400459b0226d14785c6511ad3e380b
* Synchronization: Add support for true relative timeouts usingGravatar Derek Mauro2023-03-08
| | | | | | | | | | | | | | | | | | | | | | | | | | monotonic clocks on Linux when the implementation uses futexes After this change, when synchronization methods that wait are passed an absl::Duration to limit the wait time, these methods will wait for that interval, even if the system clock is changed (subject to any limitations with how CLOCK_MONOTONIC keeps track of time). In other words, an observer measuring the time with a stop watch will now see the correct interval, even if the system clock is changed. Previously, the duration was added to the current time, and methods would wait until that time was reached on the possibly changed realtime system clock. The behavior of the synchronization methods that take an absl::Time is unchanged. These methods always wait until the absolute point in time is reached and respect changes to the system clock. In other words, an observer will always see the timeout occur when a wall clock reaches that time, even if the clock is manipulated externally. Note: ABSL_PREDICT_FALSE was removed from the error case in Futex as timeouts are handled by this case, and timeouts are part of normal operation. PiperOrigin-RevId: 515043788 Change-Id: I151127b588065bd1316273f36d7c946545c2c892
* Rollback because of internal incompatibility.Gravatar Abseil Team2023-02-28
| | | | | PiperOrigin-RevId: 512979517 Change-Id: I7fe38ed246e42e6f8eb322e15c3b299215163168
* Synchronization: Add support for true relative timeouts usingGravatar Derek Mauro2023-02-17
| | | | | | | | | | | | | | | | | | | | | | | | | | monotonic clocks on Linux when the implementation uses futexes After this change, when synchronization methods that wait are passed an absl::Duration to limit the wait time, these methods will wait for that interval, even if the system clock is changed (subject to any limitations with how CLOCK_MONOTONIC keeps track of time). In other words, an observer measuring the time with a stop watch will now see the correct interval, even if the system clock is changed. Previously, the duration was added to the current time, and methods would wait until that time was reached on the possibly changed realtime system clock. The behavior of the synchronization methods that take an absl::Time is unchanged. These methods always wait until the absolute point in time is reached and respect changes to the system clock. In other words, an observer will always see the timeout occur when a wall clock reaches that time, even if the clock is manipulated externally. Note: ABSL_PREDICT_FALSE was removed from the error case in Futex as timeouts are handled by this case, and timeouts are part of normal operation. PiperOrigin-RevId: 510405347 Change-Id: I0b3ea390de97014cfa353079ae2e0c1c637aca69
* Add KernelTimeout methods that convert the timeout to theGravatar Derek Mauro2023-02-16
| | | | | | | | | | | | | | | std::chrono methods used by std::condition_variable. A followup change will add an implemention of synchronization_internal::Waiter that can use std:mutex/std::condition_variable to implement the per-thread semaphore that absl::Mutex waits on. This implementation may at some point become the default on platforms such as Windows where there doesn't seem to be an easy way of supporting real absolute timeouts. In this case we can defer to their standard library to implement correct support. PiperOrigin-RevId: 510204786 Change-Id: Icf4d695013fd060abbd53dae23e71ea36f731565
* KernelTimeout optimization: Use absl::GetCurrentTimeNanos()Gravatar Derek Mauro2023-02-15
| | | | | | | instead of absl::ToUnixNanos(absl::Now()); PiperOrigin-RevId: 509829866 Change-Id: Ib34362762304ad6eb7980a1227d717069b84f656
* Rewrite KernelTimeout to support both absolute and relative timeoutsGravatar Derek Mauro2023-02-09
| | | | | | | | | | | | | | APIs that take KernelTimeout as a parameter can now query if an absolute or relative timeout was requested. If the underlying API can only use one type of timeout, the code will do a reasonable conversion. The goal is to eventually enable the possibility of using wait times that are based on monotonic clocks that are safe against system clock steps. PiperOrigin-RevId: 508541507 Change-Id: Id08bf13515f3e1bfd78d88393cde98a6fd3ef72c
* Add overrides to other functions which call Waiter::GetWaiterGravatar Abseil Team2023-02-08
| | | | | PiperOrigin-RevId: 508124592 Change-Id: Ib183e6e241c81b2760e7f849f8af8e7e2c30ea42
* Delete unused Futex methodsGravatar Derek Mauro2023-02-01
| | | | | PiperOrigin-RevId: 506323250 Change-Id: I0f7d4532c19088b011740ceff87ecec55cc34edb
* Remove unneeded "friends" from KernelTimeout.Gravatar Abseil Team2022-12-21
| | | | | PiperOrigin-RevId: 496974198 Change-Id: I73b4013a2ad9fd37650d788cbd1e758b327b59d2
* Add MakeAbsNs to KernelTimeout.Gravatar Abseil Team2022-12-15
| | | | | | | | | Rather than add new friends every time a new (internal) use arises, just expose the timestamp. PiperOrigin-RevId: 495722262 Change-Id: I25d2ce64769dc58cbe634259f07c600ce6c1e714
* Use AnyInvocable in internal thread_poolGravatar Abseil Team2022-11-15
| | | | | PiperOrigin-RevId: 488676817 Change-Id: I13f15bb93ab6dda4c56caf969be3c14f84ada6a0
* Fix "unsafe narrowing" warnings in absl, 8/n.Gravatar Abseil Team2022-09-12
| | | | | | | | | | | | | | | 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
* Rollback of fix "unsafe narrowing" warnings in absl, 8/n.Gravatar Derek Mauro2022-09-01
| | | | | | | | | | | | | | | 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
* Fix "unsafe narrowing" warnings in absl, 8/n.Gravatar Abseil Team2022-09-01
| | | | | | | | | | | | | | | 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
* Fix "unsafe narrowing" warnings in absl, 3/n.Gravatar Abseil Team2022-08-04
| | | | | | | | | | | | | | | 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 dirs n-t, except string.) Bug: chromium:1292951 PiperOrigin-RevId: 465287204 Change-Id: I0fe98ff78bf3c08d86992019eb626755f8b6803e
* Fix "unsafe narrowing" warnings in absl, 1/n.Gravatar Abseil Team2022-07-28
| | | | | | | | | | | | | | | 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
* absl: fix use-after-free in Mutex/CondVarGravatar Abseil Team2022-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Both Mutex and CondVar signal PerThreadSem/Waiter after satisfying the wait condition, as the result the waiting thread may return w/o waiting on the PerThreadSem/Waiter at all. If the waiting thread then exits, it currently destroys Waiter object. As the result Waiter::Post can be called on already destroyed object. PerThreadSem/Waiter must be type-stable after creation and must not be destroyed. The futex-based implementation is the only one that is not affected by the bug since there is effectively nothing to destroy (maybe only UBSan/ASan could complain about calling methods on a destroyed object). Here is the problematic sequence of events: 1: void Mutex::Block(PerThreadSynch *s) { 2: while (s->state.load(std::memory_order_acquire) == PerThreadSynch::kQueued) { 3: if (!DecrementSynchSem(this, s, s->waitp->timeout)) { 4: PerThreadSynch *Mutex::Wakeup(PerThreadSynch *w) { 5: ... 6: w->state.store(PerThreadSynch::kAvailable, std::memory_order_release); 7: IncrementSynchSem(this, w); 8: ... 9: } Consider line 6 is executed, then line 2 observes kAvailable and line 3 is not called. The thread executing Mutex::Block returns from the method, acquires the mutex, releases the mutex, exits and destroys PerThreadSem/Waiter. Now Mutex::Wakeup resumes and executes line 7 on the destroyed object. Boom! CondVar uses a similar pattern. Moreover the semaphore-based Waiter implementation is not even destruction-safe (the Waiter cannot be used to signal own destruction). So even if Mutex/CondVar would always pair Waiter::Post with Waiter::Wait before destroying PerThreadSem/Waiter, it would still be subject to use-after-free bug on the semaphore. PiperOrigin-RevId: 449159939 Change-Id: I497134fa8b6ce1294a422827c5f0de0e897cea31
* Add a stress test for base_internal::ThreadIdentity reuse.Gravatar Abseil Team2022-05-16
| | | | | PiperOrigin-RevId: 449067700 Change-Id: I972b1736c28d76ed500e9ad6fd15c7a469a5825f
* Fix spelling error "charachter"Gravatar Abseil Team2022-05-11
| | | | | PiperOrigin-RevId: 448159349 Change-Id: I6b25a90d8a3b6d3a888274d156aa696d77fb042d
* Export of internal Abseil changesGravatar Abseil Team2021-05-04
| | | | | | | | | | | | | | | | | | | | | | | | | -- 5d6734366ec54997df5234ac3b7e21015d7d5fde by Martijn Vels <mvels@google.com>: Increase slop for unit test to reduce flakiness of test PiperOrigin-RevId: 371935786 -- 6e97ff23e7f732ebf969bbc69102e5e677aae8cd by Martijn Vels <mvels@google.com>: Add node and memory usage stats analysis to GetCordzStatistics. PiperOrigin-RevId: 371893353 -- 17f7443e6f988f25efa25c2291c1cde191af2bf2 by Martijn Vels <mvels@google.com>: Add check on n == 0 in CordReader::ReadCord, which breaks invariants in the ring buffer code. PiperOrigin-RevId: 371738207 GitOrigin-RevId: 5d6734366ec54997df5234ac3b7e21015d7d5fde Change-Id: I0fc883f4f49f2380ab9afddbdfe6eb5ccc15dfc3
* Export of internal Abseil changesGravatar Abseil Team2021-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- f6fbb03bff276e72123e8590519079e87732ae62 by Abseil Team <absl-team@google.com>: Replace static absl::Mutex with SpinLock in absl::Cords to avoid static initializers by absl::Mutex destructors PiperOrigin-RevId: 370694199 -- 654b7d9edfdc24f226990b2b46cbf91451a1d92a by Martijn Vels <mvels@google.com>: Implement global data for CordzInfo in an ODR hardened way This change puts the global data into a global list structure, and stores a reference to the global list in the handle itself. This hardens the implementation against ODR violations where info pointers are crossing dynamic library boundaries which are privately loaded. PiperOrigin-RevId: 370673045 -- 712dba768e66ee2ba85d6010829c617cd2af6ba7 by Martijn Vels <mvels@google.com>: Intrument Cord::operator= for Cordz PiperOrigin-RevId: 370659149 -- c0b347a2289e151b72680269332e264b8fa989c0 by Matt Kulukundis <kfm@google.com>: Fix test guards for ABSL_ATTRIBUTE_RETURNS_NONNULL PiperOrigin-RevId: 370594807 -- c2bedaa3472ef223f907de2604f9b9b58852ec5f by Martijn Vels <mvels@google.com>: Add new Cordz instrumentation on GetAppendRegion. PiperOrigin-RevId: 370587761 -- 84fbfcc852697d509f6094482b86e84743a6b331 by Martijn Vels <mvels@google.com>: Add instrumentation on Cord::Apppend(string_view) PiperOrigin-RevId: 370576590 -- 9e077390b8ca2239e1cb7bfbe1d5a04f2fc11d30 by Abseil Team <absl-team@google.com>: Google-internal changes only. PiperOrigin-RevId: 370558424 -- fb53c149eb2364ea34e3a67235f873866618b8ac by Matt Kulukundis <kfm@google.com>: Update config.h macros with a few useful helpers to simplify version checking PiperOrigin-RevId: 370557684 -- abf8142e99b9ff7e15f6528a357f1005461950b0 by Martijn Vels <mvels@google.com>: clang-format cord PiperOrigin-RevId: 370549371 -- e555985eabe63fcf0e980e9c433dd84caffec191 by Martijn Vels <mvels@google.com>: Add MaybeUntrackCord() function This function is near identical to the old UntrackCord() but allows info to be null, moving the cord.is_profiled() branch into CordzInfo. PiperOrigin-RevId: 370528447 -- 3883538efe4601f7864bda70a50d868bb383c63b by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 370503186 -- a9514b65542fde1bc73584e6f3c1c4b3a05f215f by Derek Mauro <dmauro@google.com>: Add -Winvalid-constexpr to warning options for LLVM PiperOrigin-RevId: 370455171 -- d8a3966de2cf15a2dc28e17e49a3d27d205eca92 by Martijn Vels <mvels@google.com>: Add naive UniqueGenerator<T, kMaxValues, ...> to avoid flakes from dup random values. PiperOrigin-RevId: 370179772 -- 46d0caa1a12b68a5998d4f919e20f0f83b9286f8 by Martijn Vels <mvels@google.com>: Add new Cordz instrumentation on PrependTree. PiperOrigin-RevId: 370138969 GitOrigin-RevId: f6fbb03bff276e72123e8590519079e87732ae62 Change-Id: Ifa4c00a5c7b01198ee367a3253bea6b66612135e
* Export of internal Abseil changesGravatar Abseil Team2021-02-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | -- 1a5831c2b4b85e0151b7952e47f4b80827937620 by Laramie Leavitt <lar@google.com>: Implement FuzzingBitGen, an adapter which allows existing randomized tests which use absl::BitGenRef to easily integrate with fuzz testing. I found myself implementing a similar option in our tensorstore project to fuzz test a storage layer and figured that it would be more useful as a common tool with defaults that take the non-random path. This is similar to the FuzzedDataProvider mechanism which generates random values from a fuzz string, and is used to generate fuzz test inputs, and internally it uses FuzzedDataProvider. The basic technique used here is to construct mocking lambdas for all of the absl mock distribution configurations, and forwarding the parameters to fuzzing-specific implementations that call into FuzzedDataProvider. The default paths for the distributions are either the bounds or a median value. PiperOrigin-RevId: 358432715 -- e7968538c5ef5cd0b9822dbeac0f659b5e7d49b3 by Derek Mauro <dmauro@google.com>: Give extern C symbols a unique name when the inline namespace is given. This partially addresses #851 PiperOrigin-RevId: 358403842 GitOrigin-RevId: 1a5831c2b4b85e0151b7952e47f4b80827937620 Change-Id: Id5ca0251498e390a8efa7210a17cc2cabb2c7dd8
* Export of internal Abseil changesGravatar Abseil Team2020-10-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 730bb88bee556aa11fa19aa33e1434cb6fa78985 by Evan Brown <ezb@google.com>: Support missing allocator-related constructors in b-tree. See [reference](https://en.cppreference.com/w/cpp/container/set/set). Also use allocator_traits::select_on_container_copy_construction() to get allocator for copy construction. PiperOrigin-RevId: 339058322 -- b6cc121689ae3e452d1db2d66122cb198d25142b by Derek Mauro <dmauro@google.com>: Fix more sign-compare warnings PiperOrigin-RevId: 339057920 -- 0e2c62da1dcaf6529abab952bdcc96c6de2d9506 by Abseil Team <absl-team@google.com>: Add missing <limits> include PiperOrigin-RevId: 339054753 -- d5a9ec2d1e40fe6359e720942e4955009ee415ec by Derek Mauro <dmauro@google.com>: Stop disabling sign-compare warnings for non-test targets. Our users complain about these. This does not catch issues in header-only libraries (like btree.h) but we may work on those in the future PiperOrigin-RevId: 338967089 -- 0c062c542a4c61ea0f65d25811827c0858e3adde by Abseil Team <absl-team@google.com>: Improve cache-locality for ThreadIdentity and PerThreadSynch. This is a change based on an observation in RPC benchmarks that shows significant cycles being spent in waking up a thread, 99.8% of which was on cache misses. Investigating this a bit more, it turns out to be due to sharing the cache line with the waiter state. To fix this issue, the following changes are introduced: - Reorder fields in PerThreadSync so that it fits in a single cache line The size of this structure was 80 bytes before this change. Note: Manually inspected all booleans to make sure they are not modified by multiple threads concurrently. PiperOrigin-RevId: 338852058 -- a90d6f2b2346385017e32dd8ae1b5ca691a5863f by Derek Mauro <dmauro@google.com>: Delete GCC 4.9 test script. It is no longer supported PiperOrigin-RevId: 338779452 -- 7274008d4757e88869110be9db39d03d911ae2b5 by Abseil Team <absl-team@google.com>: Fix the usage example in which SetFlag should take a pointer. PiperOrigin-RevId: 338744529 GitOrigin-RevId: 730bb88bee556aa11fa19aa33e1434cb6fa78985 Change-Id: Iff99594c4022e60e482a392d334b376c7ae8883e
* Export of internal Abseil changesGravatar Abseil Team2020-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 5bd06440e700fefd6eadd577d7d69c51f15c63e0 by Abseil Team <absl-team@google.com>: Add if-guard to futex.h so that it doesn't fail to parse for unsupported platforms PiperOrigin-RevId: 336880375 -- 8b3d3bb4ad123fc9f648f0e397b2eddd88dc0c02 by Derek Mauro <dmauro@google.com>: Fix race in AddressIsReadable file descriptors using stronger memory ordering PiperOrigin-RevId: 336874423 -- 1d8bf23747009cca29129b80c2793bc91443dd55 by Derek Mauro <dmauro@google.com>: Avoid -Wundef warnings on ABSL_HAVE_THREAD_LOCAL PiperOrigin-RevId: 336792406 -- 562a480f029c600c1d3b1428da6a9b09e8952a74 by Derek Mauro <dmauro@google.com>: Fix preprocessor condition for symbols __tsan_mutex_read_lock and __tsan_mutex_try_lock PiperOrigin-RevId: 336732571 GitOrigin-RevId: 5bd06440e700fefd6eadd577d7d69c51f15c63e0 Change-Id: Id9bb331baec74b9d80c7b228959a7739bc30e694
* Export of internal Abseil changesGravatar Abseil Team2020-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- a5af5874c1c5cc02bd2a748d455321f82b6f2a93 by Andy Getzendanner <durandal@google.com>: fix compile fails with asan and -Wredundant-decls Import of https://github.com/abseil/abseil-cpp/pull/801 PiperOrigin-RevId: 336693223 -- ed9df42ab2b742386c6692c2bed015374c919d9c by Derek Mauro <dmauro@google.com>: Fix integer conversion warning Fixes #814 PiperOrigin-RevId: 336651814 -- 0ab4c23884e72dce17b67c1eb520f9dbb802565d by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 336585378 -- eba0e3dccd52a6e91bcff84075bef0affc650b74 by Matt Kulukundis <kfm@google.com>: Add bitset operations to Futex helper. PiperOrigin-RevId: 336409368 -- 8b0709a8b4500bf5f0af4b602d76a298d81645e8 by Abseil Team <absl-team@google.com>: Fix code indentation in a comment. PiperOrigin-RevId: 336368167 -- bc3961c87a7e7760c10319a5b0349c279f7ae3ad by Samuel Benzaquen <sbenza@google.com>: Improve performance of the registry: - Reduce contention - Reduce memory usage for each flag by `6*sizeof(void*)`. - Replace one immortal allocation per-flag with a single one for all the flags - Slightly improve single-threaded performance by avoiding the std::map indirections. PiperOrigin-RevId: 336365904 -- 264ad9f28f935aad8b6b1437f8bf804fa9104346 by Abseil Team <absl-team@google.com>: Fix typo in comment on absl::Condition. PiperOrigin-RevId: 336311680 -- b5b808a8c75ca0df7b09eff9a423ec171d80f771 by Derek Mauro <dmauro@google.com>: Add missing Apache license headers PiperOrigin-RevId: 336294980 -- 89446c3a4793df8b95060385cf3e219357c3db1d by Andy Soffer <asoffer@google.com>: Internal changes PiperOrigin-RevId: 336287465 -- 57c8be4e294881bc79a6a44b8e4bf7ecbb19b9b9 by Matt Kulukundis <kfm@google.com>: Extract Futex from an implementation detail of Wait to a private interface. PiperOrigin-RevId: 336123209 GitOrigin-RevId: a5af5874c1c5cc02bd2a748d455321f82b6f2a93 Change-Id: Ie5a0ebe28e571814e3e11d4c05ca308523ccf311
* Export of internal Abseil changesGravatar Abseil Team2020-09-28
| | | | | | | | | | | | | | | | | | | | -- f50d25c8f8491ef7031cbbcad78edd15f98c2bd1 by Abseil Team <absl-team@google.com>: Add myriad2 to HAVE_MMAP Remove mutex_nonprod and associated defines. PiperOrigin-RevId: 333759830 -- 25ef4c577ea983aa3fcd6cfe2af6cdc62a06f520 by Samuel Benzaquen <sbenza@google.com>: Internal refactor. Represent the data with a union to allow for better constexpr support in the future. PiperOrigin-RevId: 333756733 GitOrigin-RevId: f50d25c8f8491ef7031cbbcad78edd15f98c2bd1 Change-Id: Ieecd2c47cb20de638726eb3f9fc2e5682d05dcca
* Export of internal Abseil changesGravatar Abseil Team2020-09-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 8ae3cb636b81b6498ef30fbe59cc102a4098cad2 by Tom Manshreck <shreck@google.com>: Upgrade absl::StatusOr<T> docs to Abseil standards PiperOrigin-RevId: 329975341 -- 7c7baf586c7380497a751f1a186a4ef0e650161a by Tom Manshreck <shreck@google.com>: Update absl::Status to Abseil documentation standards PiperOrigin-RevId: 329942967 -- 6710d022ba987dbae7a5d83045a6697afeb972c4 by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 329775111 -- fd182dc699e18522ef16d269731c57669c5487d2 by Abseil Team <absl-team@google.com>: Google-internal change. PiperOrigin-RevId: 329737362 -- c0df5e27ffb48d9c784e7019267580fcb4a3f92e by Xiaoyi Zhang <zhangxy@google.com>: Remove obsolete `static_assert`. PiperOrigin-RevId: 329727604 GitOrigin-RevId: 8ae3cb636b81b6498ef30fbe59cc102a4098cad2 Change-Id: Ic9dede0ab97f799e7f4093fae75ae0ec6cc21437
* Export of internal Abseil changesGravatar Abseil Team2020-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -- 587e6db882749fa7faa12815e614afab04d218b9 by Derek Mauro <dmauro@google.com>: Use attribute detection for other sanitizer related attributes PiperOrigin-RevId: 324077073 -- 3ee55e4935b4235516b1fcac3c55945e510f7afc by Evan Brown <ezb@google.com>: Simplify CordRepExternal allocation/deallocation. I think this can save some memory when `Releaser` is empty and when on platforms where alignof(CordRepExternal) < (default `::operator new` alignment). We no longer need the API requirement that alignof(Releaser) <= (default `::operator new` alignment). Also remove another static_assert from a TODO in cord_internal.h and fix some warnings about calling std::move on a forwarding reference. PiperOrigin-RevId: 324053720 -- 9fc78436565eb3b204d4aa425ee3773354392f45 by Derek Mauro <dmauro@google.com>: Use auto-detected sanitizer attributes for ASAN, MSAN, and TSAN builds PiperOrigin-RevId: 323831461 GitOrigin-RevId: 587e6db882749fa7faa12815e614afab04d218b9 Change-Id: Ie0e4a2846d7f66988a2d81a5e50721b62fdb3d6d
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-30 02:37:45 +0000