018f4155eb
Replaces io_thread_call(). This approach is more generic and easier to use due to std::function.
118 lines
2.2 KiB
C++
118 lines
2.2 KiB
C++
/*
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* Copyright (C) 2003-2013 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 "event/Loop.hxx"
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#include <assert.h>
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static struct {
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Mutex mutex;
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Cond cond;
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EventLoop *loop;
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GThread *thread;
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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 != NULL);
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io.loop->Run();
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}
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static gpointer
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io_thread_func(gcc_unused gpointer arg)
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{
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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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io.mutex.lock();
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io.mutex.unlock();
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io_thread_run();
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return NULL;
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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 == NULL);
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assert(io.thread == NULL);
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io.loop = new EventLoop();
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}
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bool
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io_thread_start(gcc_unused GError **error_r)
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{
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assert(io.loop != NULL);
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assert(io.thread == NULL);
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const ScopeLock protect(io.mutex);
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#if GLIB_CHECK_VERSION(2,32,0)
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io.thread = g_thread_new("io", io_thread_func, nullptr);
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#else
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io.thread = g_thread_create(io_thread_func, NULL, true, error_r);
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if (io.thread == NULL)
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return false;
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#endif
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return true;
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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 != NULL);
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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 != NULL) {
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io_thread_quit();
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g_thread_join(io.thread);
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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()
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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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bool
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io_thread_inside(void)
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{
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return io.thread != NULL && g_thread_self() == io.thread;
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}
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