|
|
This manual page is for Mac OS X version 10.6.3If you are running a different version of Mac OS X, view the documentation locally:
Reading manual pagesManual pages are intended as a quick reference for people who already understand a technology.
|
UALARM(3) BSD Library Functions Manual UALARM(3)
NAME
ualarm -- schedule signal after specified time
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h>
useconds_t
ualarm(useconds_t useconds, useconds_t interval);
DESCRIPTION
This is a simplified interface to setitimer(2).
The ualarm() function waits a count of useconds before asserting the terminating signal SIGALRM. Sys-tem System
tem activity or time used in processing the call may cause a slight delay.
If the interval argument is non-zero, the SIGALRM signal will be sent to the process every interval
microseconds after the timer expires (e.g., after useconds number of microseconds have passed).
Due to a setitimer(2) restriction, the maximum number of useconds and interval is limited to
100,000,000,000,000 (in case this value fits in the unsigned integer).
RETURN VALUES
When the signal has successfully been caught, ualarm() returns the amount of time left on the clock.
NOTES
A microsecond is 0.000001 seconds.
SEE ALSO
getitimer(2), setitimer(2), sigpause(2), sigvec(2), alarm(3), signal(3), sleep(3), usleep(3)
HISTORY
The ualarm() function appeared in 4.3BSD.
BSD April 19, 1994 BSD
|
The way to report a problem with this manual page depends on the type of problem: