120 lines
2.1 KiB
C++
120 lines
2.1 KiB
C++
/*
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* Copyright 2003-2017 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "IOThread.hxx"
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#include "thread/Mutex.hxx"
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#include "thread/Cond.hxx"
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#include "thread/Thread.hxx"
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#include "thread/Name.hxx"
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#include "event/Loop.hxx"
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#include <assert.h>
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static struct IOThread {
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Mutex mutex;
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Cond cond;
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EventLoop *loop;
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Thread thread;
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IOThread():thread(BIND_THIS_METHOD(Run)) {}
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private:
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void Run() noexcept;
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} io;
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void
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io_thread_run(void)
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{
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assert(io_thread_inside());
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assert(io.loop != nullptr);
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io.loop->Run();
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}
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inline void
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IOThread::Run() noexcept
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{
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SetThreadName("io");
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/* lock+unlock to synchronize with io_thread_start(), to be
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sure that io.thread is set */
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mutex.lock();
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mutex.unlock();
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io_thread_run();
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}
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void
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io_thread_init(void)
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{
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assert(io.loop == nullptr);
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assert(!io.thread.IsDefined());
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io.loop = new EventLoop();
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}
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void
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io_thread_start()
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{
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assert(io.loop != nullptr);
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assert(!io.thread.IsDefined());
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const std::lock_guard<Mutex> protect(io.mutex);
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io.thread.Start();
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}
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void
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io_thread_quit(void)
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{
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assert(io.loop != nullptr);
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io.loop->Break();
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}
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void
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io_thread_deinit(void)
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{
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if (io.thread.IsDefined()) {
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io_thread_quit();
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io.thread.Join();
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}
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delete io.loop;
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}
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EventLoop &
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io_thread_get() noexcept
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{
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assert(io.loop != nullptr);
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return *io.loop;
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}
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#ifndef NDEBUG
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bool
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io_thread_inside() noexcept
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{
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return io.thread.IsInside();
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}
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#endif
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