freebsd-dev/lib/libcompat/4.3/insque.3
1994-05-27 05:00:24 +00:00

81 lines
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.\" @(#)insque.3 8.2 (Berkeley) 12/11/93
.\"
.Dd December 11, 1993
.Dt INSQUE 3
.Os BSD 4.2
.Sh NAME
.Nm insque ,
.Nm remque
.Nd insert/remove element from a queue
.Sh SYNOPSIS
.Bd -literal
struct qelem {
struct qelem *q_forw;
struct qelem *q_back;
char q_data[];
};
.Ed
.Fn insque "(caddr_t) struct qelem *elem" "(caddr_t) struct qelem *pred"
.Fn remque "(caddr_t) struct qelem *elem"
.Sh DESCRIPTION
The
.Fn insque
and
.Fn remque
functions
manipulate queues built from doubly linked lists. Each
element in the queue must be in the form of
.Dq Li struct qelem .
The function
.Fn insque
inserts
.Fa elem
in a queue immediately after
.Fa pred ;
.Fn remque
removes an entry
.Fa elem
from a queue.
.Sh SEE ALSO
.%T "VAX Architecture Handbook" ,
pp. 228-235.
.Sh HISTORY
The
.Fn insque
and
.Fn remque
functions appeared in
.Bx 4.2 .