SIGPAUSE(3) Linux Programmer's Manual SIGPAUSE(3)NAMEsigpause - atomically release blocked signals and wait for interrupt
SYNOPSIS
#include <signal.h>
int sigpause(int sigmask); /* BSD */
int sigpause(int sig); /* System V / Unix95 */
DESCRIPTION
Don't use this function. Use sigsuspend(2) instead.
The function sigpause() is designed to wait for some signal. It
changes the process's signal mask (set of blocked signals), and then
waits for a signal to arrive. Upon arrival of a signal, the original
signal mask is restored.
RETURN VALUE
If sigpause() returns, it was interrupted by a signal and the return
value is -1 with errno set to EINTR.
HISTORY
The classical BSD version of this function appeared in 4.2BSD. It sets
the process's signal mask to sigmask. Unix95 standardized the incom‐
patible System V version of this function, which removes only the spec‐
ified signal sig from the process' signal mask. The unfortunate situa‐
tion with two incompatible functions with the same name was solved by
the sigsuspend(2) function, that takes a sigset_t * parameter (instead
of an int).
On Linux, this routine is a system call only on the Sparc (sparc64)
architecture. Libc4 and libc5 only know about the BSD version. Glibc
uses the BSD version unless _XOPEN_SOURCE is defined.
SEE ALSOkill(2), sigaction(2), sigprocmask(2), sigsuspend(2), sigblock(3),
sigvec(3)Linux 2.6 2005-12-01 SIGPAUSE(3)
