sigpause(2) [bsd man page]

SIGPAUSE(2)							System Calls Manual						       SIGPAUSE(2)

NAME

       sigpause - atomically release blocked signals and wait for interrupt

SYNOPSIS

       sigpause(sigmask)
       long sigmask;

DESCRIPTION

       Sigpause  assigns  sigmask  to  the  set  of  masked  signals and then waits for a signal to arrive; on return the set of masked signals is
       restored.  Sigmask is usually 0L to indicate that no signals are now to be blocked.   Sigpause  always  terminates  by  being  interrupted,
       returning -1 with errno set to EINTR.

       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.

SEE ALSO

       sigblock(2), sigvec(2)

4th Berkeley Distribution					   May 15, 1986 						       SIGPAUSE(2)

SIGPAUSE(2)						      BSD System Calls Manual						       SIGPAUSE(2)

NAME

     sigpause -- atomically release blocked signals and wait for interrupt

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <signal.h>

     int
     sigpause(int sig);

DESCRIPTION

     This interface is made obsolete by sigsuspend(2).

     Sigpause() assigns sig to the set of masked signals and then waits for a signal to arrive; on return the set of masked signals is restored.
     Sig is usually 0, indicating that no signals are to be blocked.  Sigpause() always terminates by being interrupted, returning -1 with errno
     set to EINTR.

COMPATIBILITY

     sigpause() now takes a signal value and not a mask.  This often appears as a hang in sigpause$UNIX2003 or with sigpause() returning with
     errno set to EINVAL.  Use sigsuspend() with signal masks.

SEE ALSO

     kill(2), sigaction(2), sigblock(2), sigprocmask(2), sigsuspend(2), sigvec(2)

HISTORY

     The sigpause() function call appeared in 4.2BSD and has been deprecated.

BSD
								   June 2, 1993 							       BSD