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.