libctpool.h

   1 /* Copyright (c) 2010, James Burke <james@jabsys.net>
   2  * All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  * 3. The name of the author may not be used to endorse or promote products
  13  *    derived from this software without specific prior written permission.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #ifndef __LIBCTPOOL_H
  28 #define __LIBCTPOOL_H
  29
  30 typedef struct thread_pool thread_pool_t;         // Users never need directly modify the structure
  31
  32 // error code
  33
  34 #define POOL_CREATE_ERR 1
  35 #define JOB_CREATE_ERR 2
  36 #define POOL_DEAD 3
  37
  38 // scheduler modes
  39
  40 #define CTP_PRIORITY 20
  41 #define CTP_FIFO 21
  42 #define CTP_LIFO 22
  43
  44 extern int ctp_create_pool(thread_pool_t **pool_id, int min_threads, int max_threads, int mode);
  45 extern int ctp_add_job(thread_pool_t *pool_id, int priority, void(*function)(void *data), void *data);
  46 extern int ctp_kill_pool(thread_pool_t **pool_id);
  47 extern int ctp_pause_pool(thread_pool_t *pood_id);
  48 extern int ctp_start_pool(thread_pool_t *pood_id);
  49 extern int ctp_max_threads(thread_pool_t *pool_id, int threads);
  50 extern int ctp_min_threads(thread_pool_t *pool_id, int threads);
  51
  52 #endif