NAME
sigpause —
atomically release blocked signals and
wait for interrupt
SYNOPSIS
#include
<signal.h>
int
sigpause(int
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 0 to indicate that no
signals are to be blocked. sigpause() always
terminates by being interrupted, returning -1 with
errno set to EINTR.
SEE ALSO
kill(2), sigaction(2), sigprocmask(2), sigsuspend(2), sigblock(3), sigvec(3)
HISTORY
A sigpause() system call first appeared in
4.2BSD. In 4.3BSD-Reno, it
was reimplemented as a wrapper around
sigsuspend(2). The old system call was kept for compatibility until
OpenBSD 4.9.