sigpause(2)                                           sigpause(2)



NAME
     sigpause - release blocked signals and wait for interrupt

SYNOPSIS
     int sigpause(mask)
     int mask;

DESCRIPTION
     sigpause assigns mask to the set of blocked signals and then
     waits for a signal to arrive; on return the set of masked
     signals is restored.  mask is usually 0 to indicate that no
     signals are now to be blocked.

     In normal usage, a signal is blocked using 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.

STATUS MESSAGES AND VALUES
     sigpause always terminates by being interrupted, returning
     -1.

     The sigpause command always terminates by being interrupted
     with errno set to EINTR.

SEE ALSO
     sigblock(2), sigvec(2), signal(3)


























January 1992                                                    1