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  1. /*
  2.  * Copyright © 2012 Intel Corporation
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person obtaining a
  5.  * copy of this software and associated documentation files (the "Software"),
  6.  * to deal in the Software without restriction, including without limitation
  7.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8.  * and/or sell copies of the Software, and to permit persons to whom the
  9.  * Software is furnished to do so, subject to the following conditions:
  10.  *
  11.  * The above copyright notice and this permission notice (including the next
  12.  * paragraph) shall be included in all copies or substantial portions of the
  13.  * Software.
  14.  *
  15.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20.  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21.  * IN THE SOFTWARE.
  22.  */
  23.  
  24. #ifndef _THREADPOOL_H_
  25. #define _THREADPOOL_H_
  26.  
  27. #define MAXTHREADS 1
  28.  
  29. struct threadpool {
  30.     pthread_mutex_t m;
  31.     pthread_cond_t new_work;
  32.  
  33.     pthread_t thread;
  34.     struct threadpool_task *workqueue;
  35.     BOOL shutdown;
  36. };
  37.  
  38. typedef void (*threadpool_task_func)(void *data);
  39.  
  40. struct threadpool_task {
  41.     threadpool_task_func work;
  42.     void *data;
  43.     struct threadpool_task *next;
  44.     pthread_cond_t finish;
  45.     BOOL finished;
  46. };
  47.  
  48. struct threadpool *_mesa_threadpool_create(void);
  49. void _mesa_threadpool_destroy(struct threadpool *pool);
  50. struct threadpool_task *_mesa_threadpool_queue_task(struct threadpool *pool,
  51.                                                     threadpool_task_func func,
  52.                                                     void *data);
  53. void _mesa_threadpool_wait_for_task(struct threadpool *pool,
  54.                                     struct threadpool_task **task);
  55. #endif