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265e672179
# ignore-this-changeset --HG-- extra : amend_source : 4d301d3b0b8711c4692392aa76088ba7fd7d1022
67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_ConditionVariable_h
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#define mozilla_ConditionVariable_h
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#include "mozilla/Attributes.h"
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#include "mozilla/Move.h"
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#include "mozilla/PlatformMutex.h"
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#include "mozilla/TimeStamp.h"
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#include <stdint.h>
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#ifndef XP_WIN
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#include <pthread.h>
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#endif
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namespace mozilla {
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enum class CVStatus { NoTimeout, Timeout };
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namespace detail {
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class ConditionVariableImpl {
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public:
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struct PlatformData;
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MFBT_API ConditionVariableImpl();
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MFBT_API ~ConditionVariableImpl();
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// Wake one thread that is waiting on this condition.
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MFBT_API void notify_one();
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// Wake all threads that are waiting on this condition.
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MFBT_API void notify_all();
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// Block the current thread of execution until this condition variable is
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// woken from another thread via notify_one or notify_all.
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MFBT_API void wait(MutexImpl& lock);
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MFBT_API CVStatus wait_for(MutexImpl& lock,
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const mozilla::TimeDuration& rel_time);
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private:
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ConditionVariableImpl(const ConditionVariableImpl&) = delete;
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ConditionVariableImpl& operator=(const ConditionVariableImpl&) = delete;
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PlatformData* platformData();
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#ifndef XP_WIN
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void* platformData_[sizeof(pthread_cond_t) / sizeof(void*)];
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static_assert(sizeof(pthread_cond_t) / sizeof(void*) != 0 &&
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sizeof(pthread_cond_t) % sizeof(void*) == 0,
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"pthread_cond_t must have pointer alignment");
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#else
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void* platformData_[4];
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#endif
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};
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} // namespace detail
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} // namespace mozilla
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#endif // mozilla_ConditionVariable_h
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