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/* ========================================================================= *
* *
* The Apache Software License, Version 1.1 *
* *
* Copyright (c) 1999-2001 The Apache Software Foundation. *
* All rights reserved. *
* *
* ========================================================================= *
* *
* Redistribution and use in source and binary forms, with or without modi- *
* fication, are permitted provided that the following conditions are met: *
* *
* 1. Redistributions of source code must retain the above copyright notice *
* notice, this list of conditions and the following disclaimer. *
* *
* 2. Redistributions in binary form must reproduce the above copyright *
* notice, this list of conditions and the following disclaimer in the *
* documentation and/or other materials provided with the distribution. *
* *
* 3. The end-user documentation included with the redistribution, if any, *
* must include the following acknowlegement: *
* *
* "This product includes software developed by the Apache Software *
* Foundation <http://www.apache.org/>." *
* *
* Alternately, this acknowlegement may appear in the software itself, if *
* and wherever such third-party acknowlegements normally appear. *
* *
* 4. The names "The Jakarta Project", "Jk", and "Apache Software *
* Foundation" must not be used to endorse or promote products derived *
* from this software without prior written permission. For written *
* permission, please contact <apache@apache.org>. *
* *
* 5. Products derived from this software may not be called "Apache" nor may *
* "Apache" appear in their names without prior written permission of the *
* Apache Software Foundation. *
* *
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS 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. *
* *
* ========================================================================= *
* *
* This software consists of voluntary contributions made by many indivi- *
* duals on behalf of the Apache Software Foundation. For more information *
* on the Apache Software Foundation, please see <http://www.apache.org/>. *
* *
* ========================================================================= */
/***************************************************************************
* Description: ISAPI plugin for Tomcat *
* Author: Andy Armstrong <andy@tagish.com> *
* Version: $Revision: 1.1 $ *
***************************************************************************/
#ifndef __poolbuf_h
#define __poolbuf_h
#include <stddef.h>
#include "jk_pool.h"
#define poolbuf__MINCHUNK 2048
typedef struct poolbuf__chunk
{
size_t size;
struct poolbuf__chunk *next;
} poolbuf__chunk;
typedef enum { WRITE, READ } poolbuf__state;
typedef struct
{
jk_pool_t *p;
poolbuf__chunk *head;
poolbuf__chunk *current;
/* current state */
poolbuf__state state;
/* total number of bytes available to read */
size_t avail;
/* offsets within the current chunk */
unsigned int writePos;
unsigned int readPos;
} poolbuf;
/* Initialise a poolbuf. */
void poolbuf_init(poolbuf *pb, jk_pool_t *p);
size_t poolbuf_write(poolbuf *pb, const void *buf, size_t size);
size_t poolbuf_read(poolbuf *pb, void *buf, size_t size);
size_t poolbuf_available(poolbuf *pb);
void poolbuf_destroy(poolbuf *pb);
#endif /* __poolbuf_h */
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