mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/kdave/btrfs-progs.git
synced 2024-11-15 08:14:21 +08:00
b5aac254c7
The tool IWYU (include what you use) suggests to remove and add some includes. This is only partial to avoid accidental build breakage, the includes are entangled and will have to be cleaned in the future again. Signed-off-by: David Sterba <dsterba@suse.com>
148 lines
3.0 KiB
C
148 lines
3.0 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include <sys/timerfd.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <time.h>
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#include "common/task-utils.h"
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struct task_info *task_init(void *(*threadfn)(void *), int (*postfn)(void *),
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void *thread_private)
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{
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struct task_info *info = calloc(1, sizeof(struct task_info));
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if (!info)
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return NULL;
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info->private_data = thread_private;
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info->threadfn = threadfn;
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info->postfn = postfn;
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return info;
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}
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int task_start(struct task_info *info, time_t *start_time, u64 *item_count)
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{
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int ret;
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if (!info)
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return -1;
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if (!info->threadfn)
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return -1;
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if (start_time)
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*start_time = time(NULL);
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if (item_count)
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*item_count = 0;
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ret = pthread_create(&info->id, NULL, info->threadfn,
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info->private_data);
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if (ret)
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info->id = 0;
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return ret;
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}
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void task_stop(struct task_info *info)
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{
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if (!info)
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return;
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if (info->id) {
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pthread_cancel(info->id);
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pthread_join(info->id, NULL);
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info->id = 0;
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}
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if (info->periodic.timer_fd) {
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close(info->periodic.timer_fd);
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info->periodic.timer_fd = 0;
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}
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if (info->postfn)
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info->postfn(info->private_data);
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}
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void task_deinit(struct task_info *info)
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{
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if (!info)
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return;
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free(info);
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}
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int task_period_start(struct task_info *info, unsigned int period_ms)
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{
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unsigned int ns;
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unsigned int sec;
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struct itimerspec itval;
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if (!info)
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return -1;
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info->periodic.timer_fd = timerfd_create(CLOCK_MONOTONIC, 0);
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if (info->periodic.timer_fd == -1) {
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info->periodic.timer_fd = 0;
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return info->periodic.timer_fd;
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}
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info->periodic.wakeups_missed = 0;
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sec = period_ms / 1000;
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ns = (period_ms - (sec * 1000)) * 1000 * 1000;
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itval.it_interval.tv_sec = sec;
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itval.it_interval.tv_nsec = ns;
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itval.it_value.tv_sec = sec;
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itval.it_value.tv_nsec = ns;
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return timerfd_settime(info->periodic.timer_fd, 0, &itval, NULL);
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};
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void task_period_wait(struct task_info *info)
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{
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unsigned long long missed;
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int ret;
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if (!info)
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return;
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if (info->periodic.timer_fd == 0)
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return;
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ret = read(info->periodic.timer_fd, &missed, sizeof (missed));
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if (ret == -1)
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return;
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if (missed > 0)
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info->periodic.wakeups_missed += (missed - 1);
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}
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void task_period_stop(struct task_info *info)
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{
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if (!info)
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return;
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if (info->periodic.timer_fd) {
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timerfd_settime(info->periodic.timer_fd, 0, NULL, NULL);
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close(info->periodic.timer_fd);
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info->periodic.timer_fd = -1;
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}
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}
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