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75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
/*
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* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/Queue.h>
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#include <LibThread/BackgroundAction.h>
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#include <LibThread/Lock.h>
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#include <LibThread/Thread.h>
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static LibThread::Lockable<Queue<Function<void()>>>* s_all_actions;
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static LibThread::Thread* s_background_thread;
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static int background_thread_func()
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{
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while (true) {
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Function<void()> work_item;
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{
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LOCKER(s_all_actions->lock());
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if (!s_all_actions->resource().is_empty())
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work_item = s_all_actions->resource().dequeue();
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}
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if (work_item)
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work_item();
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else
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sleep(1);
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}
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ASSERT_NOT_REACHED();
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}
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static void init()
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{
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s_all_actions = new LibThread::Lockable<Queue<Function<void()>>>();
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s_background_thread = &LibThread::Thread::construct(background_thread_func).leak_ref();
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s_background_thread->set_name("Background thread");
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s_background_thread->start();
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}
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LibThread::Lockable<Queue<Function<void()>>>& LibThread::BackgroundActionBase::all_actions()
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{
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if (s_all_actions == nullptr)
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init();
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return *s_all_actions;
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}
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LibThread::Thread& LibThread::BackgroundActionBase::background_thread()
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{
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if (s_background_thread == nullptr)
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init();
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return *s_background_thread;
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}
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