97 lines
2.8 KiB
Groff
97 lines
2.8 KiB
Groff
.\" Copyright (C) 2000 Jason Evans <jasone@freebsd.org>.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice(s), this list of conditions and the following disclaimer as
|
|
.\" the first lines of this file unmodified other than the possible
|
|
.\" addition of one or more copyright notices.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice(s), this list of conditions and the following disclaimer in
|
|
.\" the documentation and/or other materials provided with the
|
|
.\" distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
|
|
.\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
|
|
.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
|
|
.\" BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
.\" WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
|
|
.\" OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
|
.\" EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.Dd April 27, 2000
|
|
.Dt PTHREAD_SIGMASK 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm pthread_sigmask
|
|
.Nd examine and/or change a thread's signal mask
|
|
.Sh LIBRARY
|
|
.Lb libc_r
|
|
.Sh SYNOPSIS
|
|
.Fd #include <pthread.h>
|
|
.Fd #include <signal.h>
|
|
.Ft int
|
|
.Fn pthread_sigmask "int how" "const sigset_t *set" "sigset_t *oset"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn pthread_sigmask
|
|
function examines and/or changes the calling thread's signal mask.
|
|
.Pp
|
|
If
|
|
.Fa set
|
|
is not
|
|
.Dv NULL ,
|
|
it specifies a set of signals to be modified, and
|
|
.Fa how
|
|
specifies what to set the signal mask to:
|
|
.Bl -tag -width SIG_UNBLOCK
|
|
.It Dv SIG_BLOCK
|
|
Union of the current mask and
|
|
.Fa set .
|
|
.It Dv SIG_UNBLOCK
|
|
Intersection of the current mask and the complement of
|
|
.Fa set .
|
|
.It Dv SIG_SETMASK
|
|
.Fa set .
|
|
.El
|
|
.Pp
|
|
If
|
|
.Fa oset
|
|
is not NULL, the previous signal mask is stored in the location pointed to by
|
|
.Fa oset .
|
|
.Pp
|
|
.Dv SIGKILL
|
|
and
|
|
.Dv SIGSTOP
|
|
cannot be blocked, and will be silently ignored if included in the signal mask.
|
|
.Sh RETURN VALUES
|
|
If successful,
|
|
.Fn pthread_sigmask
|
|
returns 0.
|
|
Otherwise, an error is returned.
|
|
.Sh ERRORS
|
|
.Fn pthread_sigmask
|
|
will fail if:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EINVAL
|
|
.Fa how
|
|
is not one of the defined values.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr sigaction 2 ,
|
|
.Xr sigpending 2 ,
|
|
.Xr sigprocmask 2 ,
|
|
.Xr sigsuspend 2 ,
|
|
.Xr sigsetops 3
|
|
.Sh STANDARDS
|
|
.Fn pthread_sigmask
|
|
conforms to
|
|
.St -p1003.1-96
|