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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/***************************************************************************
* Description: Memory Pool object header file *
* Author: Gal Shachor <shachor@il.ibm.com> *
* Version: $Revision: 466585 $ *
***************************************************************************/
#ifndef _JK_POOL_H
#define _JK_POOL_H
#include "jk_global.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/**
* @file jk_pool.h
* @brief Jk memory allocation
*
* Similar with apr_pools, but completely unsynchronized.
* XXX use same names
*
*/
/*
* The pool atom (basic pool alocation unit) is an 8 byte long.
* Each allocation (even for 1 byte) will return a round up to the
* number of atoms.
*
* This is to help in alignment of 32/64 bit machines ...
* G.S
*/
#ifdef WIN32
typedef __int64 jk_pool_atom_t;
#elif defined(AIX)
typedef long long jk_pool_atom_t;
#elif defined(SOLARIS)
typedef long long jk_pool_atom_t;
#elif defined(LINUX)
typedef long long jk_pool_atom_t;
#elif defined(FREEBSD)
typedef long long jk_pool_atom_t;
#elif defined(OS2)
typedef long long jk_pool_atom_t;
#elif defined(NETWARE)
typedef long long jk_pool_atom_t;
#elif defined(HPUX11)
typedef long long jk_pool_atom_t;
#elif defined(IRIX)
typedef long long jk_pool_atom_t;
#elif defined(AS400)
typedef void *jk_pool_atom_t;
#else
typedef long long jk_pool_atom_t;
#endif
/**
* Alignment macros
*/
/* JK_ALIGN() is only to be used to align on a power of 2 boundary */
#define JK_ALIGN(size, boundary) \
(((size) + ((boundary) - 1)) & ~((boundary) - 1))
/** Default alignment */
#ifdef AS400
#define JK_ALIGN_DEFAULT(size) JK_ALIGN(size, 16)
#else
#define JK_ALIGN_DEFAULT(size) JK_ALIGN(size, 8)
#endif
/*
* Pool size in number of pool atoms.
*/
#define TINY_POOL_SIZE 256 /* Tiny 1/4K atom pool. */
#define SMALL_POOL_SIZE 512 /* Small 1/2K atom pool. */
#define BIG_POOL_SIZE 2*SMALL_POOL_SIZE /* Bigger 1K atom pool. */
#define HUGE_POOL_SIZE 2*BIG_POOL_SIZE /* Huge 2K atom pool. */
/** jk pool structure */
struct jk_pool
{
size_t size;
size_t pos;
char *buf;
size_t dyn_size;
size_t dyn_pos;
void **dynamic;
};
typedef struct jk_pool jk_pool_t;
void jk_open_pool(jk_pool_t *p, jk_pool_atom_t *buf, size_t size);
void jk_close_pool(jk_pool_t *p);
void jk_reset_pool(jk_pool_t *p);
void *jk_pool_alloc(jk_pool_t *p, size_t sz);
void *jk_pool_realloc(jk_pool_t *p,
size_t sz, const void *old, size_t old_sz);
void *jk_pool_strdup(jk_pool_t *p, const char *s);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* _JK_POOL_H */
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