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https://github.com/openharmony/resourceschedule_ffrt.git
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董洁
61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
/*
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* Copyright (c) 2023 Huawei Device Co., Ltd.
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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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#ifndef UTIL_SYNC_HPP
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#define UTIL_SYNC_HPP
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// Provide synchronization primitives
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#include <atomic>
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#include <thread>
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#include <mutex>
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#include <condition_variable>
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#include <unistd.h>
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#include <sys/syscall.h>
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#include <linux/futex.h>
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#include "sched/execute_ctx.h"
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#include "cpp/fast_mutex.h"
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namespace ffrt {
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class spin_mutex {
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std::atomic<int> l;
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void lock_contended();
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public:
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spin_mutex() : l(sync_detail::UNLOCK)
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{
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}
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spin_mutex(spin_mutex const&) = delete;
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void operator=(spin_mutex const&) = delete;
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void lock()
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{
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if (l.exchange(sync_detail::LOCK, std::memory_order_acquire) == sync_detail::UNLOCK) {
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return;
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}
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lock_contended();
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}
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void unlock()
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{
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l.store(sync_detail::UNLOCK, std::memory_order_release);
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}
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};
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bool DelayedWakeup(const TimePoint& to, WaitEntry* we, const std::function<void(WaitEntry*)>& wakeup,
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bool skipTimeCheck = false);
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bool DelayedRemove(const TimePoint& to, WaitEntry* we);
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} // namespace ffrt
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#endif
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