sigwait — wait for a signal
||const sigset_t *set,|
suspends execution of the calling thread until one of the
signals specified in the signal set
set becomes pending. The
function accepts the signal (removes it from the pending list
of signals), and returns the signal number in
The operation of
is the same as sigwaitinfo(2), except
sigwait() returns only
the signal number, rather than a siginfo_t structure describing the
The return values of the two functions are different.
returns 0. On error, it returns a positive error number
(listed in ERRORS).
For an explanation of the terms used in this section, see attributes(7).
sigwait() is implemented
The glibc implementation of
sigwait() silently ignores attempts to wait
for the two real-time signals that are used internally by the
NPTL threading implementation. See nptl(7) for details.
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