ALARM(2-SVR4)       RISC/os Reference Manual        ALARM(2-SVR4)



NAME
     alarm - set a process alarm clock

SYNOPSIS
     #include <unistd.h>

     unsigned alarm(unsigned sec);

DESCRIPTION
     alarm instructs the alarm clock of the calling process to
     send the signal SIGALRM to the calling process after the
     number of real time seconds specified by sec have elapsed
     [see signal(2)].

     Alarm requests are not stacked; successive calls reset the
     alarm clock of the calling process.

     If sec is 0, any previously made alarm request is canceled.

     fork sets the alarm clock of a new process to 0 [see
     fork(2)].  A process created by the exec family of routines
     inherits the time left on the old process's alarm clock.

SEE ALSO
     fork(2), exec(2), pause(2), signal(2), sigset(2).

DIAGNOSTICS
     alarm returns the amount of time previously remaining in the
     alarm clock of the calling process.


























                        Printed 11/19/92                   Page 1