From 5aa5d282eac56a21e74611c1cdbaa97bb5db2dca Mon Sep 17 00:00:00 2001 From: Vincent Ambo Date: Tue, 8 Feb 2022 02:05:36 +0300 Subject: chore(3p/abseil_cpp): unvendor abseil_cpp we weren't actually using these sources anymore, okay? Change-Id: If701571d9716de308d3512e1eb22c35db0877a66 Reviewed-on: https://cl.tvl.fyi/c/depot/+/5248 Tested-by: BuildkiteCI Reviewed-by: grfn Autosubmit: tazjin --- .../absl/synchronization/internal/per_thread_sem.h | 115 --------------------- 1 file changed, 115 deletions(-) delete mode 100644 third_party/abseil_cpp/absl/synchronization/internal/per_thread_sem.h (limited to 'third_party/abseil_cpp/absl/synchronization/internal/per_thread_sem.h') diff --git a/third_party/abseil_cpp/absl/synchronization/internal/per_thread_sem.h b/third_party/abseil_cpp/absl/synchronization/internal/per_thread_sem.h deleted file mode 100644 index 2228b6e8ea91..000000000000 --- a/third_party/abseil_cpp/absl/synchronization/internal/per_thread_sem.h +++ /dev/null @@ -1,115 +0,0 @@ -// Copyright 2017 The Abseil Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// https://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -// - -// PerThreadSem is a low-level synchronization primitive controlling the -// runnability of a single thread, used internally by Mutex and CondVar. -// -// This is NOT a general-purpose synchronization mechanism, and should not be -// used directly by applications. Applications should use Mutex and CondVar. -// -// The semantics of PerThreadSem are the same as that of a counting semaphore. -// Each thread maintains an abstract "count" value associated with its identity. - -#ifndef ABSL_SYNCHRONIZATION_INTERNAL_PER_THREAD_SEM_H_ -#define ABSL_SYNCHRONIZATION_INTERNAL_PER_THREAD_SEM_H_ - -#include - -#include "absl/base/internal/thread_identity.h" -#include "absl/synchronization/internal/create_thread_identity.h" -#include "absl/synchronization/internal/kernel_timeout.h" - -namespace absl { -ABSL_NAMESPACE_BEGIN - -class Mutex; - -namespace synchronization_internal { - -class PerThreadSem { - public: - PerThreadSem() = delete; - PerThreadSem(const PerThreadSem&) = delete; - PerThreadSem& operator=(const PerThreadSem&) = delete; - - // Routine invoked periodically (once a second) by a background thread. - // Has no effect on user-visible state. - static void Tick(base_internal::ThreadIdentity* identity); - - // --------------------------------------------------------------------------- - // Routines used by autosizing threadpools to detect when threads are - // blocked. Each thread has a counter pointer, initially zero. If non-zero, - // the implementation atomically increments the counter when it blocks on a - // semaphore, a decrements it again when it wakes. This allows a threadpool - // to keep track of how many of its threads are blocked. - // SetThreadBlockedCounter() should be used only by threadpool - // implementations. GetThreadBlockedCounter() should be used by modules that - // block threads; if the pointer returned is non-zero, the location should be - // incremented before the thread blocks, and decremented after it wakes. - static void SetThreadBlockedCounter(std::atomic *counter); - static std::atomic *GetThreadBlockedCounter(); - - private: - // Create the PerThreadSem associated with "identity". Initializes count=0. - // REQUIRES: May only be called by ThreadIdentity. - static void Init(base_internal::ThreadIdentity* identity); - - // Destroy the PerThreadSem associated with "identity". - // REQUIRES: May only be called by ThreadIdentity. - static void Destroy(base_internal::ThreadIdentity* identity); - - // Increments "identity"'s count. - static inline void Post(base_internal::ThreadIdentity* identity); - - // Waits until either our count > 0 or t has expired. - // If count > 0, decrements count and returns true. Otherwise returns false. - // !t.has_timeout() => Wait(t) will return true. - static inline bool Wait(KernelTimeout t); - - // Permitted callers. - friend class PerThreadSemTest; - friend class absl::Mutex; - friend absl::base_internal::ThreadIdentity* CreateThreadIdentity(); - friend void ReclaimThreadIdentity(void* v); -}; - -} // namespace synchronization_internal -ABSL_NAMESPACE_END -} // namespace absl - -// In some build configurations we pass --detect-odr-violations to the -// gold linker. This causes it to flag weak symbol overrides as ODR -// violations. Because ODR only applies to C++ and not C, -// --detect-odr-violations ignores symbols not mangled with C++ names. -// By changing our extension points to be extern "C", we dodge this -// check. -extern "C" { -void AbslInternalPerThreadSemPost( - absl::base_internal::ThreadIdentity* identity); -bool AbslInternalPerThreadSemWait( - absl::synchronization_internal::KernelTimeout t); -} // extern "C" - -void absl::synchronization_internal::PerThreadSem::Post( - absl::base_internal::ThreadIdentity* identity) { - AbslInternalPerThreadSemPost(identity); -} - -bool absl::synchronization_internal::PerThreadSem::Wait( - absl::synchronization_internal::KernelTimeout t) { - return AbslInternalPerThreadSemWait(t); -} - -#endif // ABSL_SYNCHRONIZATION_INTERNAL_PER_THREAD_SEM_H_ -- cgit 1.4.1