TIMER_CREATE(2) BSD System Calls Manual TIMER_CREATE(2)NAMEtimer_create — create a per-process timer
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <time.h>
#include <signal.h>
int
timer_create(clockid_t clockid, struct sigevent * restrict evp,
timer_t * restrict timerid);
DESCRIPTION
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.
NOTES
Timers are not inherited after a fork(2) and are disarmed and deleted by
an exec(3).
RETURN VALUES
If successful, the timer_create() function returns 0, and fills in the
timerid argument with the id of the new timer that was created. Other‐
wise, it returns -1, and sets errno to indicate the error.
ERRORS
The timer_create() function will fail if:
[EAGAIN] The system is out of resources to satisfy this
request, or the process has created all the timers it
is allowed.
[EINVAL] The argument clockid is not a valid clock id.
SEE ALSOclock_getres(2), clock_gettime(2), clock_settime(2), timer_delete(2),
timer_getoverrun(2), timer_gettime(2), timer_settime(2)STANDARDS
IEEE Std 1003.1b-1993 (“POSIX.1”), IEEE Std 1003.1i-1995 (“POSIX.1”)
BSD May 19, 2010 BSD
