81 lines
2.6 KiB
Groff
81 lines
2.6 KiB
Groff
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.\" Copyright (c) 1983, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)insque.3 8.2 (Berkeley) 12/11/93
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.\"
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.Dd December 11, 1993
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.Dt INSQUE 3
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.Os BSD 4.2
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.Sh NAME
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.Nm insque ,
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.Nm remque
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.Nd insert/remove element from a queue
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.Sh SYNOPSIS
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.Bd -literal
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struct qelem {
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struct qelem *q_forw;
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struct qelem *q_back;
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char q_data[];
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};
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.Ed
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.Fn insque "(caddr_t) struct qelem *elem" "(caddr_t) struct qelem *pred"
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.Fn remque "(caddr_t) struct qelem *elem"
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.Sh DESCRIPTION
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The
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.Fn insque
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and
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.Fn remque
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functions
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manipulate queues built from doubly linked lists. Each
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element in the queue must be in the form of
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.Dq Li struct qelem .
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The function
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.Fn insque
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inserts
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.Fa elem
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in a queue immediately after
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.Fa pred ;
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.Fn remque
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removes an entry
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.Fa elem
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from a queue.
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.Sh SEE ALSO
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.%T "VAX Architecture Handbook" ,
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pp. 228-235.
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.Sh HISTORY
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The
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.Fn insque
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and
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.Fn remque
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functions appeared in
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.Bx 4.2 .
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