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authorSilvio Fricke <silvio.fricke@gmail.com>2014-11-09 23:16:55 +0100
committerDavid Sterba <dsterba@suse.cz>2014-12-04 17:11:29 +0100
commitcd08bdfd9813568baf445fd1a65f1f16a52e5cd0 (patch)
tree758109c60c93bc09587f80605acfec01b0cd8bc9 /task-utils.h
parent3a98fe43f67e4f751b04fc9270152f6825fe47dd (diff)
btrfs-progs: add task-utils
Support for monitoring progress of running tasks, based on timerfd and pthreads. Signed-off-by: Silvio Fricke <silvio.fricke@gmail.com> Signed-off-by: David Sterba <dsterba@suse.cz>
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+/*
+ * 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 <pthread.h>
+
+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