Unix/Linux Go Back    

NetBSD 6.1.5 - man page for alarm (netbsd section 3)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)

ALARM(3)			   BSD Library Functions Manual 			 ALARM(3)

     alarm -- set signal timer alarm

     Standard C Library (libc, -lc)

     #include <unistd.h>

     unsigned int
     alarm(unsigned int seconds);

     This interface is made obsolete by setitimer(2).

     The alarm() function sets a timer to deliver the signal SIGALRM to the calling process
     seconds after the call to alarm().  If an alarm has already been set with alarm() but has
     not been delivered, another call to alarm() will supersede the prior call.  The request
     alarm(0) voids the current alarm and the signal SIGALRM will not be delivered.  The maximum
     number of seconds allowed is 2147483647.

     The return value of alarm() is the amount of time left on the timer from a previous call to
     alarm().  If no alarm is currently set, the return value is 0.  If there is an error setting
     the timer, alarm() returns ((unsigned int) -1).

     setitimer(2), sigaction(2), sigsuspend(2), signal(3), sigvec(3), sleep(3), ualarm(3),

     The alarm() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'').

     An alarm() function appeared in Version 7 AT&T UNIX.

BSD					  April 19, 1994				      BSD
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums

All times are GMT -4. The time now is 09:08 AM.