libhb/taskset.h

   1 /* taskset.h
   2
   3    Copyright (c) 2003-2015 HandBrake Team
   4    This file is part of the HandBrake source code
   5    Homepage: <http://handbrake.fr/>.
   6    It may be used under the terms of the GNU General Public License v2.
   7    For full terms see the file COPYING file or visit http://www.gnu.org/licenses/gpl-2.0.html
   8  */
   9
  10 #ifndef HB_TASKSET_H
  11 #define HB_TASKSET_H
  12
  13 #define TASKSET_POSIX_COMPLIANT 1
  14
  15 #include "bits.h"
  16
  17 typedef struct hb_taskset_s {
  18     int                thread_count;
  19     int                arg_size;
  20     int                bitmap_elements;
  21     hb_thread_t     ** task_threads;
  22     uint8_t          * task_threads_args;
  23     uint32_t         * task_begin_bitmap;    // Threads can begin
  24     uint32_t         * task_complete_bitmap; // Threads have completed
  25     uint32_t         * task_stop_bitmap;     // Threads should exit
  26     hb_lock_t        * task_cond_lock;       // Held during condition tests
  27     hb_cond_t        * task_begin;           // Threads can begin work
  28     hb_cond_t        * task_complete;        // Threads have finished work.
  29 } taskset_t;
  30
  31 int taskset_init( taskset_t *, int /*thread_count*/, size_t /*user_arg_size*/ );
  32 void taskset_cycle( taskset_t * );
  33 void taskset_fini( taskset_t * );
  34
  35 int  taskset_thread_spawn( taskset_t *, int /*thr_idx*/, const char * /*descr*/,
  36                            thread_func_t *, int /*priority*/ );
  37 void taskset_thread_wait4start( taskset_t *, int );
  38 void taskset_thread_complete( taskset_t *, int );
  39
  40 static inline void *taskset_thread_args( taskset_t *, int );
  41 static inline int   taskset_thread_stop( taskset_t *, int );
  42
  43 static inline void *
  44 taskset_thread_args( taskset_t *ts, int thr_idx )
  45 {
  46     return( ts->task_threads_args + ( ts->arg_size * thr_idx ) );
  47 }
  48
  49 static inline int
  50 taskset_thread_stop( taskset_t *ts, int thr_idx )
  51 {
  52     return bit_is_set( ts->task_stop_bitmap, thr_idx );
  53 }
  54
  55 #endif /* HB_TASKSET_H */