Originální popis anglicky:
sigpause - atomically release blocked signals and wait for interrupt
Návod, kniha: Linux Programmer's Manual
#include <signal.h>
int sigpause(int sigmask); /* BSD */
int sigpause(int sig); /* Unix95 */
Don't use this function. Use
sigsuspend(2) instead.
The function
sigpause is designed to wait for some signal. It changes the
process' 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.
If
sigpause returns, it was interrupted by a signal and the return value
is -1 with
errno set to
EINTR.
The classical BSD version of this function appeared in 4.2BSD. It sets the
process' signal mask to
sigmask. When the number of signals was
increased above 32, this version was replaced by the incompatible Unix95 one,
which removes only the specified signal
sig from the process' signal
mask. The unfortunate situation 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.
kill(2),
sigaction(2),
sigblock(2),
sigprocmask(2),
sigsuspend(2),
sigvec(2)
