ReactOS  0.4.15-dev-1200-gc3b3fcd
mem.h
Go to the documentation of this file.
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 #define MEM_SIZE_F SZT_F
47 
48 /* aliases for C library malloc() */
49 #define mem_init()
50 /* in case C library malloc() needs extra protection,
51  * allow these defines to be overridden.
52  */
53 #ifndef mem_free
54 #define mem_free free
55 #endif
56 #ifndef mem_malloc
57 #define mem_malloc malloc
58 #endif
59 #ifndef mem_calloc
60 #define mem_calloc calloc
61 #endif
62 /* Since there is no C library allocation function to shrink memory without
63  moving it, define this to nothing. */
64 #ifndef mem_trim
65 #define mem_trim(mem, size) (mem)
66 #endif
67 #else /* MEM_LIBC_MALLOC */
68 
69 /* MEM_SIZE would have to be aligned, but using 64000 here instead of
70  * 65535 leaves some room for alignment...
71  */
72 #if MEM_SIZE > 64000L
73 typedef u32_t mem_size_t;
74 #define MEM_SIZE_F U32_F
75 #else
76 typedef u16_t mem_size_t;
77 #define MEM_SIZE_F U16_F
78 #endif /* MEM_SIZE > 64000 */
79 
80 #if MEM_USE_POOLS
81 
82 #define mem_init()
83 
85 #define mem_trim(mem, size) (mem)
86 #else /* MEM_USE_POOLS */
87 /* lwIP alternative malloc */
88 void mem_init(void);
89 void *mem_trim(void *mem, mem_size_t size);
90 #endif /* MEM_USE_POOLS */
93 void mem_free(void *mem);
94 #endif /* MEM_LIBC_MALLOC */
95 
100 #ifndef LWIP_MEM_ALIGN_SIZE
101 #define LWIP_MEM_ALIGN_SIZE(size) (((size) + MEM_ALIGNMENT - 1) & ~(MEM_ALIGNMENT-1))
102 #endif
103 
108 #ifndef LWIP_MEM_ALIGN_BUFFER
109 #define LWIP_MEM_ALIGN_BUFFER(size) (((size) + MEM_ALIGNMENT - 1))
110 #endif
111 
115 #ifndef LWIP_MEM_ALIGN
116 #define LWIP_MEM_ALIGN(addr) ((void *)(((mem_ptr_t)(addr) + MEM_ALIGNMENT - 1) & ~(mem_ptr_t)(MEM_ALIGNMENT-1)))
117 #endif
118 
119 #ifdef __cplusplus
120 }
121 #endif
122 
123 #endif /* __LWIP_MEM_H__ */
void mem_init(void)
Definition: mem.c:274
GLuint GLuint GLsizei count
Definition: gl.h:1545
GLsizeiptr size
Definition: glext.h:5919
u16_t mem_size_t
Definition: mem.h:76
unsigned long u32_t
Definition: cc.h:25
void * mem_trim(void *mem, mem_size_t size)
Definition: mem.c:369
void mem_free(void *mem)
Definition: mem.c:311
Definition: mem.c:156
unsigned short u16_t
Definition: cc.h:24
void * mem_malloc(mem_size_t size)
Definition: mem.c:494
void * mem_calloc(mem_size_t count, mem_size_t size)
Definition: mem.c:646