[netwatch.git] / lwip / src / include / lwip / mem.h

/*
 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
 * All rights reserved. 
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright 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 name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 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 AUTHOR 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 file is part of the lwIP TCP/IP stack.
 * 
 * Author: Adam Dunkels <adam@sics.se>
 *
 */
#ifndef __LWIP_MEM_H__
#define __LWIP_MEM_H__

#include "lwip/opt.h"

#ifdef __cplusplus
extern "C" {
#endif

#if MEM_LIBC_MALLOC

#include <stddef.h> /* for size_t */

typedef size_t mem_size_t;

/* aliases for C library malloc() */
#define mem_init()
/* in case C library malloc() needs extra protection,
 * allow these defines to be overridden.
 */
#ifndef mem_free
#define mem_free(x) free(x)
#endif
#ifndef mem_malloc
#define mem_malloc(x) malloc(x)
#endif
#ifndef mem_calloc
#define mem_calloc(x, y) calloc(x, y)
#endif
#ifndef mem_realloc
#define mem_realloc(x, size) (x)
#endif
#else /* MEM_LIBC_MALLOC */

/* MEM_SIZE would have to be aligned, but using 64000 here instead of
 * 65535 leaves some room for alignment...
 */
#if MEM_SIZE > 64000l
typedef u32_t mem_size_t;
#else
typedef u16_t mem_size_t;
#endif /* MEM_SIZE > 64000 */

#if MEM_USE_POOLS
/** mem_init is not used when using pools instead of a heap */
#define mem_init()
/** mem_realloc is not used when using pools instead of a heap:
    we can't free part of a pool element and don't want to copy the rest */
#define mem_realloc(mem, size) (mem)
#else /* MEM_USE_POOLS */
/* lwIP alternative malloc */
void  mem_init(void);
void *mem_realloc(void *mem, mem_size_t size);
#endif /* MEM_USE_POOLS */
void *mem_malloc(mem_size_t size);
void *mem_calloc(mem_size_t count, mem_size_t size);
void  mem_free(void *mem);
#endif /* MEM_LIBC_MALLOC */

#ifndef LWIP_MEM_ALIGN_SIZE
#define LWIP_MEM_ALIGN_SIZE(size) (((size) + MEM_ALIGNMENT - 1) & ~(MEM_ALIGNMENT-1))
#endif

#ifndef LWIP_MEM_ALIGN
#define LWIP_MEM_ALIGN(addr) ((void *)(((mem_ptr_t)(addr) + MEM_ALIGNMENT - 1) & ~(mem_ptr_t)(MEM_ALIGNMENT-1)))
#endif

#ifdef __cplusplus
}
#endif

#endif /* __LWIP_MEM_H__ */
Commit	Line	Data
6e6d4a8b JP	1	/*
	2	* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without modification,
	6	* are permitted provided that the following conditions are met:
	7	*
	8	* 1. Redistributions of source code must retain the above copyright notice,
	9	* this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright notice,
	11	* this list of conditions and the following disclaimer in the documentation
	12	* and/or other materials provided with the distribution.
	13	* 3. The name of the author may not be used to endorse or promote products
	14	* derived from this software without specific prior written permission.
	15	*
	16	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
	17	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
	18	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
	19	* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	20	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
	21	* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	22	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	23	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	24	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
	25	* OF SUCH DAMAGE.
	26	*
	27	* This file is part of the lwIP TCP/IP stack.
	28	*
	29	* Author: Adam Dunkels <adam@sics.se>
	30	*
	31	*/
	32	#ifndef __LWIP_MEM_H__
	33	#define __LWIP_MEM_H__
	34
	35	#include "lwip/opt.h"
	36
	37	#ifdef __cplusplus
	38	extern "C" {
	39	#endif
	40
	41	#if MEM_LIBC_MALLOC
	42
	43	#include <stddef.h> /* for size_t */
	44
	45	typedef size_t mem_size_t;
	46
	47	/* aliases for C library malloc() */
	48	#define mem_init()
	49	/* in case C library malloc() needs extra protection,
	50	* allow these defines to be overridden.
	51	*/
	52	#ifndef mem_free
	53	#define mem_free(x) free(x)
	54	#endif
	55	#ifndef mem_malloc
	56	#define mem_malloc(x) malloc(x)
	57	#endif
	58	#ifndef mem_calloc
	59	#define mem_calloc(x, y) calloc(x, y)
	60	#endif
	61	#ifndef mem_realloc
	62	#define mem_realloc(x, size) (x)
	63	#endif
	64	#else /* MEM_LIBC_MALLOC */
65
66	/* MEM_SIZE would have to be aligned, but using 64000 here instead of
67	* 65535 leaves some room for alignment...
68	*/
69	#if MEM_SIZE > 64000l
70	typedef u32_t mem_size_t;
71	#else
72	typedef u16_t mem_size_t;
73	#endif /* MEM_SIZE > 64000 */
74
75	#if MEM_USE_POOLS
76	/** mem_init is not used when using pools instead of a heap */
77	#define mem_init()
78	/** mem_realloc is not used when using pools instead of a heap:
79	we can't free part of a pool element and don't want to copy the rest */
80	#define mem_realloc(mem, size) (mem)
81	#else /* MEM_USE_POOLS */
82	/* lwIP alternative malloc */
83	void mem_init(void);
84	void mem_realloc(void mem, mem_size_t size);
85	#endif /* MEM_USE_POOLS */
86	void *mem_malloc(mem_size_t size);
87	void *mem_calloc(mem_size_t count, mem_size_t size);
88	void mem_free(void *mem);
89	#endif /* MEM_LIBC_MALLOC */
90
91	#ifndef LWIP_MEM_ALIGN_SIZE
92	#define LWIP_MEM_ALIGN_SIZE(size) (((size) + MEM_ALIGNMENT - 1) & ~(MEM_ALIGNMENT-1))
93	#endif
94
95	#ifndef LWIP_MEM_ALIGN
96	#define LWIP_MEM_ALIGN(addr) ((void *)(((mem_ptr_t)(addr) + MEM_ALIGNMENT - 1) & ~(mem_ptr_t)(MEM_ALIGNMENT-1)))
97	#endif
98
99	#ifdef __cplusplus
100	}
101	#endif
102
103	#endif /* __LWIP_MEM_H__ */