HPUX sigpause[2]

 sigpause(2)                                                     sigpause(2)





 NAME
      sigpause - atomically release blocked signals and wait for interrupt

 SYNOPSIS
      #include <signal.h>

      long sigpause(long mask);

 DESCRIPTION
      sigpause() blocks signals according to the value of mask in the same
      manner as sigsetmask(2), then atomically waits for an unmasked signal
      to arrive.  On return sigpause() restores the current signal mask to
      the value that existed before the sigpause() call.  When no signals
      are to be blocked, a value of 0L is used for mask.

      In normal usage, a signal is blocked using sigblock() (see
      sigblock(2)).  To begin a critical section, variables modified on the
      occurrence of the signal are examined to determine that there is no
      work to be done, and the process pauses, awaiting work by using
      sigpause() with the mask returned by sigblock().

 RETURN VALUE
      sigpause() terminates when it is interrupted by a signal.  When
      sigpause() terminates, it returns -l and sets errno to EINTR.

 EXAMPLES
      The following call to sigpause() waits until the calling process
      receives a signal:

           sigpause (0L);

      The following example blocks the SIGIO signal until sigpause() is
      called.  When a signal is received at the sigpause() statement, the
      signal mask is restored to its value before sigpause() was called:

           long savemask;
           savemask = sigblock (sigmask (SIGIO));
           /* critical section */
           sigpause (savemask);

 WARNINGS
      Check all references to signal(5) for appropriateness on systems that
      support sigvector(2).  sigvector() can affect the behavior described
      on this page.

      Do not use sigpause() in conjunction with the facilities described
      under sigset(2V).

 AUTHOR
      sigpause() was developed by the University of California, Berkeley.




 Hewlett-Packard Company            - 1 -     HP-UX Release 9.0: August 1992






 sigpause(2)                                                     sigpause(2)





 SEE ALSO
      sigblock(2), sigsetmask(2), sigsuspend(2), sigvector(2).




















































 Hewlett-Packard Company            - 2 -     HP-UX Release 9.0: August 1992