SLEEP(3)                       Library Routines                       SLEEP(3)




NAME

       sleep - suspend process execution for interval of seconds


SYNOPSIS

       #include <unistd.h>

       unsigned int sleep (unsigned int seconds);


DESCRIPTION

       The  sleep  function suspends execution of the calling process for sec-
       onds of time.  System activity or time spent in processing the call may
       lengthen  the  sleep  by  a second.  Because scheduled wakeups occur at
       fixed 1-second intervals, the actual suspension time may also be up  to
       1 second less than requested.

       This function is implemented using alarm(2) and sigpause(2).


RETURN VALUES

       This implementation of sleep always returns zero.


SEE ALSO

       sigpause(2)


HISTORY

       A sleep function appeared in v7.



GNO                             27 January 1997                       SLEEP(3)

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