TIMER_CREATE(2)System Calls ManualTIMER_CREATE(2)
timer_create — create a per-process timer
Standard C Library (libc, -lc)
#include <time.h>#include <signal.h>
int timer_create(clockid_t clockid, struct sigevent * restrict evp, timer_t * restrict timerid);
The timer_create() function creates a per-process timer using the clock specified in the clockid argument. If it succeeds, the timer_create() function fills in the timerid argument with an id associated with the timer created that can be used by other timer related calls. The clockid must be a valid clock id as defined in <time.h>. The timer is created in a disarmed state.
An optional (non-
NULL) struct sigevent argument can be specified by the evp argument. If the evp argument is NULL, then evp->sigev_notify defaults to SIGEV_SIGNAL and evp->sigev_value is set to timerid. Refer to
sigevent(3) for more details.
Timers are not inherited after a
fork(2) and are disarmed and deleted by an
If successful, the timer_create() function returns 0, and fills in the timerid argument with the id of the new timer that was created. Otherwise, it returns -1, and sets errno to indicate the error.
The timer_create() function will fail if:
- The system is out of resources to satisfy this request, or the process has created all the timers it is allowed.
- The argument clockid is not a valid clock id.
IEEE Std 1003.1b-1993 (“POSIX.1b”), IEEE Std 1003.1i-1995 (“POSIX.1i”)
NetBSDMay 19, 2010NetBSD