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Copyright (c) 2000, Sun Microsystems, Inc. All Rights Reserved.
Copyright 1989 AT&T
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
QB_WANTW
Copyright (c) 2000, Sun Microsystems, Inc. All Rights Reserved.
Copyright 1989 AT&T
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
QBAND 9S "Nov 14, 1996"
NAME
qband - STREAMS queue flow control information structure
SYNOPSIS
#include <sys/stream.h>
INTERFACE LEVEL
Architecture independent level 1 (DDI/DKI)
DESCRIPTION
The qband structure contains flow control information for each priority band in a queue.
The qband structure is defined as type qband_t.
STRUCTURE MEMBERS
struct qband*qb_next; /* next band's info */ size_t qb_count /* number of bytes in band */ struct msgb *qb_first; /* start of band's data */ struct msgb *qb_last; /* end of band's data */ size_t qb_hiwat; /* band's high water mark */ size_t qb_lowat; /* band's low water mark */ uint_t qb_flag; /* see below */
Valid flags are as follows: QB_FULL
Band is considered full.
Someone wants to write to band.
SEE ALSO
strqget (9F), strqset (9F), msgb (9S), queue (9S)
STREAMS Programming Guide
NOTES
All access to this structure should be through strqget(9F) and strqset(9F). It is logically part of the queue(9S) and its layout and partitioning with respect to that structure might change in future releases. If portability is a concern, do not declare or store instances of or references to this structure.