From cd08bdfd9813568baf445fd1a65f1f16a52e5cd0 Mon Sep 17 00:00:00 2001 From: Silvio Fricke Date: Sun, 9 Nov 2014 23:16:55 +0100 Subject: btrfs-progs: add task-utils Support for monitoring progress of running tasks, based on timerfd and pthreads. Signed-off-by: Silvio Fricke Signed-off-by: David Sterba --- task-utils.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 task-utils.h (limited to 'task-utils.h') diff --git a/task-utils.h b/task-utils.h new file mode 100644 index 0000000..3d412dd --- /dev/null +++ b/task-utils.h @@ -0,0 +1,47 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License v2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 021110-1307, USA. + */ + +#ifndef __TASK_UTILS_H_ +#define __TASK_UTILS_H_ + +#include + +struct periodic_info { + int timer_fd; + unsigned long long wakeups_missed; +}; + +struct task_info { + struct periodic_info periodic; + pthread_t id; + void *private_data; + void *(*threadfn)(void *); + int (*postfn)(void *); +}; + +/* task life cycle */ +struct task_info *task_init(void *(*threadfn)(void *), int (*postfn)(void *), + void *thread_private); +int task_start(struct task_info *info); +void task_stop(struct task_info *info); +void task_deinit(struct task_info *info); + +/* periodic life cycle */ +int task_period_start(struct task_info *info, unsigned int period_ms); +void task_period_wait(struct task_info *info); +void task_period_stop(struct task_info *info); + +#endif -- cgit v1.2.1