SGINAP(2)                                                            SGINAP(2)



NAME
     sginap - timed sleep and processor yield function

C SYNOPSIS
     #include <unistd.h>
     long sginap (long ticks);

DESCRIPTION
     The sginap system call provides two functions.  With an argument of 0, it
     yields the processor to any higher or equal priority threads immediately,
     thus potentially allowing another thread to run.  Note that because
     normally the user has no direct control over the exact priority of a
     given thread, this does not guarantee that another thread will run.

     With an argument which is non-zero, sginap will suspend the thread for
     ticks clock ticks.  The length of a clock tick is defined by CLKTCK in
     the include file <limits.h>. This is the same for all SGI systems.

     Note that if the calling thread is interrupted by a signal before the
     specified number of ticks has elapsed, sginap will return prematurely.

SEE ALSO
     sleep(3), alarm(2), pause(2), schedctl(2), setitimer(2).

DIAGNOSTICS
     If the calling thread remains suspended for the requested number of
     ticks, sginap returns 0.  If, however, the thread is interrupted
     prematurely by a signal, it returns the number of unexpired ticks in the
     specified period.


























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