task-utils.h

   1 /*
   2  * This program is free software; you can redistribute it and/or
   3  * modify it under the terms of the GNU General Public
   4  * License v2 as published by the Free Software Foundation.
   5  *
   6  * This program is distributed in the hope that it will be useful,
   7  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   9  * General Public License for more details.
  10  *
  11  * You should have received a copy of the GNU General Public
  12  * License along with this program; if not, write to the
  13  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  14  * Boston, MA 021110-1307, USA.
  15  */
  16
  17 #ifndef __TASK_UTILS_H__
  18 #define __TASK_UTILS_H__
  19
  20 #include "kerncompat.h"
  21 #include <pthread.h>
  22
  23 struct periodic_info {
  24         int timer_fd;
  25         unsigned long long wakeups_missed;
  26 };
  27
  28 struct task_info {
  29         struct periodic_info periodic;
  30         pthread_t id;
  31         void *private_data;
  32         void *(*threadfn)(void *);
  33         int (*postfn)(void *);
  34 };
  35
  36 /* task life cycle */
  37 struct task_info *task_init(void *(*threadfn)(void *), int (*postfn)(void *),
  38                             void *thread_private);
  39 int task_start(struct task_info *info, time_t *start_time, u64 *item_count);
  40 void task_stop(struct task_info *info);
  41 void task_deinit(struct task_info *info);
  42
  43 /* periodic life cycle */
  44 int task_period_start(struct task_info *info, unsigned int period_ms);
  45 void task_period_wait(struct task_info *info);
  46 void task_period_stop(struct task_info *info);
  47
  48 #endif