blender/intern/cycles/util/util_thread.h

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/*
* Copyright 2011-2013 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __UTIL_THREAD_H__
#define __UTIL_THREAD_H__
#include <boost/thread.hpp>
#include <pthread.h>
#include <queue>
#include "util_function.h"
CCL_NAMESPACE_BEGIN
/* use boost for mutexes */
typedef boost::mutex thread_mutex;
typedef boost::mutex::scoped_lock thread_scoped_lock;
typedef boost::condition_variable thread_condition_variable;
/* own pthread based implementation, to avoid boost version conflicts with
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* dynamically loaded blender plugins */
class thread {
public:
thread(boost::function<void(void)> run_cb_)
{
joined = false;
run_cb = run_cb_;
pthread_create(&pthread_id, NULL, run, (void*)this);
}
~thread()
{
if(!joined)
join();
}
static void *run(void *arg)
{
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((thread*)arg)->run_cb();
return NULL;
}
bool join()
{
joined = true;
return pthread_join(pthread_id, NULL) == 0;
}
protected:
boost::function<void(void)> run_cb;
pthread_t pthread_id;
bool joined;
};
CCL_NAMESPACE_END
#endif /* __UTIL_THREAD_H__ */