1 .\" $NetBSD: pthread_sigmask.3,v 1.6 2006/01/07 20:10:29 kleink Exp $
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52 .\" $FreeBSD: src/lib/libpthread/man/pthread_sigmask.3,v 1.10 2002/09/16 19:29:29 mini Exp $
58 .Nd examine and/or change a thread's signal mask
65 .Fn pthread_sigmask "int how" "const sigset_t * restrict set" "sigset_t * restrict oset"
69 function examines and/or changes the calling thread's signal mask.
75 it specifies a set of signals to be modified, and
77 specifies what to set the signal mask to:
78 .Bl -tag -width SIG_UNBLOCK
80 Union of the current mask and
83 Intersection of the current mask and the complement of
91 is not NULL, the previous signal mask is stored in the location pointed to by
97 cannot be blocked, and will be silently ignored if included in the signal mask.
102 Otherwise, an error is returned.
109 is not one of the defined values.