#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/work_interval.h>
#include <mach/mach_time.h>
#include <sys/errno.h>
#include <stdlib.h>
struct work_interval {
uint64_t thread_id;
uint64_t work_interval_id;
};
extern uint64_t __thread_selfid(void);
int
work_interval_create(work_interval_t *interval_handle, uint32_t flags __unused)
{
int ret;
uint64_t work_interval_id;
work_interval_t handle;
ret = __work_interval_ctl(WORK_INTERVAL_OPERATION_CREATE, 0, &work_interval_id, sizeof(work_interval_id));
if (ret == -1) {
return ret;
}
handle = malloc(sizeof(*handle));
if (handle == NULL) {
errno = ENOMEM;
return -1;
}
handle->thread_id = __thread_selfid();
handle->work_interval_id = work_interval_id;
*interval_handle = handle;
return 0;
}
int
work_interval_notify(work_interval_t interval_handle, uint64_t start, uint64_t finish, uint64_t deadline, uint64_t next_start, uint32_t flags)
{
int ret;
uint64_t work_interval_id;
struct work_interval_notification notification = {
.start = start,
.finish = finish,
.deadline = deadline,
.next_start = next_start,
.flags = flags,
.unused1 = 0
};
if (interval_handle == NULL) {
errno = EINVAL;
return -1;
}
work_interval_id = interval_handle->work_interval_id;
ret = __work_interval_ctl(WORK_INTERVAL_OPERATION_NOTIFY, work_interval_id, ¬ification, sizeof(notification));
return ret;
}
int
work_interval_notify_simple(work_interval_t interval_handle, uint64_t start, uint64_t deadline, uint64_t next_start)
{
return work_interval_notify(interval_handle, start, mach_absolute_time(), deadline, next_start, 0);
}
int
work_interval_destroy(work_interval_t interval_handle)
{
int ret, saved_errno;
uint64_t work_interval_id;
if (interval_handle == NULL) {
errno = EINVAL;
return -1;
}
work_interval_id = interval_handle->work_interval_id;
ret = __work_interval_ctl(WORK_INTERVAL_OPERATION_DESTROY, work_interval_id, NULL, 0);
saved_errno = errno;
free(interval_handle);
errno = saved_errno;
return ret;
}