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/*
* Copyright 2011, Blender Foundation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#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
* 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)
{
((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;
};
/* Thread Local Storage
*
* Boost implementation is a bit slow, and Mac OS X __thread is not supported
* but the pthreads implementation is optimized, so we use these macros. */
#ifdef __APPLE__
#define tls_ptr(type, name) \
pthread_key_t name
#define tls_set(name, value) \
pthread_setspecific(name, value)
#define tls_get(type, name) \
((type*)pthread_getspecific(name))
#define tls_create(type, name) \
pthread_key_create(&name, NULL)
#define tls_delete(type, name) \
pthread_key_delete(name);
#else
#ifdef __WIN32
#define __thread __declspec(thread)
#endif
#define tls_ptr(type, name) \
__thread type *name
#define tls_set(name, value) \
name = value
#define tls_get(type, name) \
name
#define tls_create(type, name)
#define tls_delete(type, name)
#endif
CCL_NAMESPACE_END
#endif /* __UTIL_THREAD_H__ */
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