src/gallium/state_trackers/nine/threadpool.h

   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 #include <pthread.h>
  28
  29 struct NineSwapChain9;
  30
  31 #define MAXTHREADS 1
  32
  33 struct threadpool {
  34     pthread_mutex_t m;
  35     pthread_cond_t new_work;
  36
  37     HANDLE wthread;
  38     pthread_t pthread;
  39     struct threadpool_task *workqueue;
  40     BOOL shutdown;
  41 };
  42
  43 typedef void (*threadpool_task_func)(void *data);
  44
  45 struct threadpool_task {
  46     threadpool_task_func work;
  47     void *data;
  48     struct threadpool_task *next;
  49     pthread_cond_t finish;
  50     BOOL finished;
  51 };
  52
  53 struct threadpool *_mesa_threadpool_create(struct NineSwapChain9 *swapchain);
  54 void _mesa_threadpool_destroy(struct NineSwapChain9 *swapchain, struct threadpool *pool);
  55 struct threadpool_task *_mesa_threadpool_queue_task(struct threadpool *pool,
  56                                                     threadpool_task_func func,
  57                                                     void *data);
  58 void _mesa_threadpool_wait_for_task(struct threadpool *pool,
  59                                     struct threadpool_task **task);
  60 #endif