|SIGWAIT(2)||System Calls Manual||SIGWAIT(2)|
sigwait — select a
set of signals
sigset_t *restrict set,
int *restrict sig);
function selects a set of signals, specified by set.
If none of the selected signals are pending,
sigwait() waits until one or more of the selected
signals has been generated. Then
atomically clears one of the selected signals from the set of pending
signals for the process and sets the location pointed to by
sig to the signal number that was cleared.
The signals specified by set
should be blocked, but not ignored, at the time of the call to
Processes which call
on ignored signals will wait indefinitely. Ignored signals are dropped
immediately by the system, before delivery to a waiting process.
sigwait() returns 0 and
sets the location pointed to by sig to the cleared
signal number. Otherwise, an error number is returned.
sigwait() will fail if:
sigwait() conforms to ISO/IEC 9945-1:1996
|April 27, 2000||macOS 14.1|