Section: Linux Programmer's Manual (3)
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sigpause - atomically release blocked signals and wait for interrupt
int sigpause(int sigmask); /* BSD */
int sigpause(int sig); /* System V / Unix95 */
Don't use this function. Use
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.
returns, it was interrupted by a signal and the return value is -1
The classical BSD version of this function appeared in 4.2BSD.
It sets the process's signal mask to
Unix95 standardized the incompatible System V version of
this function, which removes only the specified signal
from the process' signal mask.
The unfortunate situation with two incompatible functions with the
same name was solved by the
function, that takes a
parameter (instead of an
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.
- RETURN VALUE
- SEE ALSO
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