private/queue.h
/*
* SpanDSP - a series of DSP components for telephony
*
* private/queue.h - simple in process message queuing
*
* Written by Steve Underwood <steveu@coppice.org>
*
* Copyright (C) 2004 Steve Underwood
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#if !defined(_SPANDSP_PRIVATE_QUEUE_H_)
#define _SPANDSP_PRIVATE_QUEUE_H_
/*!
Queue descriptor. This defines the working state for a single instance of
a byte stream or message oriented queue.
*/
struct queue_state_s
{
/*! \brief Flags indicating the mode of the queue. */
int flags;
/*! \brief The length of the data buffer. */
int len;
/*! \brief The buffer input pointer. */
volatile int iptr;
/*! \brief The buffer output pointer. */
volatile int optr;
#if defined(SPANDSP_FULLY_DEFINE_QUEUE_STATE_T)
/*! \brief The data buffer, sized at the time the structure is created. */
uint8_t data[];
#endif
};
#endif
/*- End of file ------------------------------------------------------------*/
queue_state_s
Definition private/queue.h:34
queue_state_s::flags
int flags
Flags indicating the mode of the queue.
Definition private/queue.h:36
queue_state_s::optr
volatile int optr
The buffer output pointer.
Definition private/queue.h:42
queue_state_s::len
int len
The length of the data buffer.
Definition private/queue.h:38
queue_state_s::iptr
volatile int iptr
The buffer input pointer.
Definition private/queue.h:40