62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
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/*
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* Copyright (C) 2016 The Android Open Source Project
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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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* http://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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#pragma once
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#include <condition_variable>
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#include "sysdeps/mutex.h"
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#if defined(_WIN32)
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#include <windows.h>
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#include <android-base/macros.h>
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// The prebuilt version of mingw we use doesn't support condition_variable.
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// Therefore, implement our own using the Windows primitives.
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// Put them directly into the std namespace, so that when they're actually available, the build
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// breaks until they're removed.
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namespace std {
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class condition_variable {
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public:
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condition_variable() {
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InitializeConditionVariable(&cond_);
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}
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void wait(std::unique_lock<std::mutex>& lock) {
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std::mutex *m = lock.mutex();
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m->lock_count_--;
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SleepConditionVariableCS(&cond_, m->native_handle(), INFINITE);
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m->lock_count_++;
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}
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void notify_one() {
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WakeConditionVariable(&cond_);
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}
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private:
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CONDITION_VARIABLE cond_;
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DISALLOW_COPY_AND_ASSIGN(condition_variable);
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};
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}
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#endif // defined(_WIN32)
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