timer_create(2) - NetBSD Manual Pages

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TIMER_CREATE(2)           NetBSD System Calls Manual           TIMER_CREATE(2)


NAME
timer_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 ALSO
clock_getres(2), clock_gettime(2), clock_settime(2), timer_delete(2), timer_getoverrun(2), timer_gettime(2), timer_settime(2), sigevent(3)
STANDARDS
IEEE Std 1003.1b-1993 (``POSIX.1''), IEEE Std 1003.1i-1995 (``POSIX.1'') NetBSD 9.0 May 19, 2010 NetBSD 9.0
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