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28 .\" $FreeBSD: src/lib/libc_r/man/sigwait.3,v 1.2.2.6 2001/12/17 10:08:26 ru Exp $
29 .\" $DragonFly: src/lib/libc_r/man/sigwait.3,v 1.2 2003/06/17 04:26:48 dillon Exp $
35 .Nd select a set of signals
41 .Fn sigwait "const sigset_t *set" "int *sig"
45 function selects a set of signals, specified by
47 If none of the selected signals are pending,
49 waits until one or more of the selected signals has been generated.
52 atomically clears one of the selected signals from the set of pending signals
53 for the process and sets the location pointed to by
55 to the signal number that was cleared.
57 The signals specified by
59 should be blocked at the time of the call to
64 returns 0 and sets the location pointed to by
66 to the cleared signal number.
67 Otherwise, an error number is returned.
74 specifies one or more invalid signal numbers.