846e5dbeda
-- 90ecacd2a3db96ee64ef23af37a80fad404e2b32 by Gennadiy Rozental <rogeeff@google.com>: Fixes MSVC regression by making MSVC version of class Flag into an aggregate type. PiperOrigin-RevId: 277767054 -- 018f3b040df51d91a988fa146fee163721e605e9 by Abseil Team <absl-team@google.com>: Change libstdc++ lacking std::unique_ptr check from a gcc version check to based on feature macros. PiperOrigin-RevId: 277736042 -- 475844775ae343e2414318f08549ee3fa6676a8d by CJ Johnson <johnsoncj@google.com>: Pass allocator_type through allocator_traits before extracting the typedefs PiperOrigin-RevId: 277730393 -- d843bc4bc30bf5b11af76db8beda8634b6111a62 by Abseil Team <absl-team@google.com>: Convert the Waiter::Init() method to the default constructor and define a destructor for the Waiter class. Use placement new and delete with Waiter objects. PiperOrigin-RevId: 277728823 -- 1ba6edf421dd2dfe13c55970a03c99592cb6677d by Derek Mauro <dmauro@google.com>: Use lowercase spelling for include of dbghelp.h When cross-compiling under MinGW this is important PiperOrigin-RevId: 277629783 -- cfc662a6fa357a84ddda8037156c7f26cee40c36 by Abseil Team <absl-team@google.com>: Don't use atomic ops on waiter and wakeup counts in WIN32 waiter mode. Port the new CONDVAR waiter mode code in CL 277366017 to the WIN32 waiter mode. PiperOrigin-RevId: 277603611 -- 833106542e61fa0832900adf3c1b2afc6890b94b by Abseil Team <absl-team@google.com>: Add the PerThreadSem::Destroy() method. For ABSL_WAITER_MODE_CONDVAR or ABSL_WAITER_MODE_SEM, PerThreadSem::Destroy() is used to destroy the pthread mutex and condition variable or the POSIX semaphore. PiperOrigin-RevId: 277586675 -- 7814da4a59106cf1e0e4db1a31b9592ebbd2094b by Samuel Benzaquen <sbenza@google.com>: Enable the assertion in the iterator's operator* and operator-> PiperOrigin-RevId: 277563401 GitOrigin-RevId: 90ecacd2a3db96ee64ef23af37a80fad404e2b32 Change-Id: Ib19be3680da74f0b94055c9039115ec6bcaea7b0
58 lines
2.2 KiB
C++
58 lines
2.2 KiB
C++
/*
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* Copyright 2017 The Abseil Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// Interface for getting the current ThreadIdentity, creating one if necessary.
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// See thread_identity.h.
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//
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// This file is separate from thread_identity.h because creating a new
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// ThreadIdentity requires slightly higher level libraries (per_thread_sem
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// and low_level_alloc) than accessing an existing one. This separation allows
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// us to have a smaller //absl/base:base.
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#ifndef ABSL_SYNCHRONIZATION_INTERNAL_CREATE_THREAD_IDENTITY_H_
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#define ABSL_SYNCHRONIZATION_INTERNAL_CREATE_THREAD_IDENTITY_H_
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#include "absl/base/internal/thread_identity.h"
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#include "absl/base/port.h"
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namespace absl {
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namespace synchronization_internal {
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// Allocates and attaches a ThreadIdentity object for the calling thread.
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// For private use only.
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base_internal::ThreadIdentity* CreateThreadIdentity();
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// A per-thread destructor for reclaiming associated ThreadIdentity objects.
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// For private use only.
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void ReclaimThreadIdentity(void* v);
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// Returns the ThreadIdentity object representing the calling thread; guaranteed
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// to be unique for its lifetime. The returned object will remain valid for the
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// program's lifetime; although it may be re-assigned to a subsequent thread.
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// If one does not exist for the calling thread, allocate it now.
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inline base_internal::ThreadIdentity* GetOrCreateCurrentThreadIdentity() {
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base_internal::ThreadIdentity* identity =
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base_internal::CurrentThreadIdentityIfPresent();
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if (ABSL_PREDICT_FALSE(identity == nullptr)) {
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return CreateThreadIdentity();
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}
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return identity;
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}
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} // namespace synchronization_internal
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} // namespace absl
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#endif // ABSL_SYNCHRONIZATION_INTERNAL_CREATE_THREAD_IDENTITY_H_
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