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/*
*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* The Original Code is Copyright (C) 2006 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef BLI_THREADS_H
#define BLI_THREADS_H
#include <pthread.h>
/* for tables, button in UI, etc */
#define BLENDER_MAX_THREADS 64
struct ListBase;
/* Threading API */
/*this is run once at startup*/
void BLI_threadapi_init(void);
void BLI_init_threads (struct ListBase *threadbase, void *(*do_thread)(void *), int tot);
int BLI_available_threads(struct ListBase *threadbase);
int BLI_available_thread_index(struct ListBase *threadbase);
void BLI_insert_thread (struct ListBase *threadbase, void *callerdata);
void BLI_remove_thread (struct ListBase *threadbase, void *callerdata);
void BLI_remove_thread_index(struct ListBase *threadbase, int index);
void BLI_remove_threads(struct ListBase *threadbase);
void BLI_end_threads (struct ListBase *threadbase);
int BLI_thread_is_main(void);
/* System Information */
int BLI_system_thread_count(void); /* gets the number of threads the system can make use of */
/* Global Mutex Locks
*
* One custom lock available now. can be extended. */
#define LOCK_IMAGE 0
#define LOCK_PREVIEW 1
#define LOCK_VIEWER 2
#define LOCK_CUSTOM1 3
#define LOCK_RCACHE 4
#define LOCK_OPENGL 5
void BLI_lock_thread(int type);
void BLI_unlock_thread(int type);
/* Mutex Lock */
typedef pthread_mutex_t ThreadMutex;
#define BLI_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
void BLI_mutex_init(ThreadMutex *mutex);
void BLI_mutex_lock(ThreadMutex *mutex);
void BLI_mutex_unlock(ThreadMutex *mutex);
void BLI_mutex_end(ThreadMutex *mutex);
/* Read/Write Mutex Lock */
#define THREAD_LOCK_READ 1
#define THREAD_LOCK_WRITE 2
typedef pthread_rwlock_t ThreadRWMutex;
void BLI_rw_mutex_init(ThreadRWMutex *mutex);
void BLI_rw_mutex_lock(ThreadRWMutex *mutex, int mode);
void BLI_rw_mutex_unlock(ThreadRWMutex *mutex);
void BLI_rw_mutex_end(ThreadRWMutex *mutex);
/* ThreadedWorker
*
* A simple tool for dispatching work to a limited number of threads
* in a transparent fashion from the caller's perspective. */
struct ThreadedWorker;
/* Create a new worker supporting tot parallel threads.
* When new work in inserted and all threads are busy, sleep(sleep_time) before checking again
*/
struct ThreadedWorker *BLI_create_worker(void *(*do_thread)(void *), int tot, int sleep_time);
/* join all working threads */
void BLI_end_worker(struct ThreadedWorker *worker);
/* also ends all working threads */
void BLI_destroy_worker(struct ThreadedWorker *worker);
/* Spawns a new work thread if possible, sleeps until one is available otherwise
* NOTE: inserting work is NOT thread safe, so make sure it is only done from one thread */
void BLI_insert_work(struct ThreadedWorker *worker, void *param);
/* ThreadWorkQueue
*
* Thread-safe work queue to push work/pointers between threads. */
typedef struct ThreadQueue ThreadQueue;
ThreadQueue *BLI_thread_queue_init();
void BLI_thread_queue_free(ThreadQueue *queue);
void BLI_thread_queue_push(ThreadQueue *queue, void *work);
void *BLI_thread_queue_pop(ThreadQueue *queue);
void *BLI_thread_queue_pop_timeout(ThreadQueue *queue, int ms);
int BLI_thread_queue_size(ThreadQueue *queue);
void BLI_thread_queue_nowait(ThreadQueue *queue);
#endif
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