source: azure_iot_hub/trunk/wolfssl-3.15.7/wolfssl/wolfcrypt/memory.h@ 389

Last change on this file since 389 was 389, checked in by coas-nagasima, 5 years ago

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1/* memory.h
2 *
3 * Copyright (C) 2006-2017 wolfSSL Inc.
4 *
5 * This file is part of wolfSSL.
6 *
7 * wolfSSL is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * wolfSSL is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
20 */
21
22
23/* submitted by eof */
24
25/*!
26 \file wolfssl/wolfcrypt/memory.h
27*/
28
29#ifndef WOLFSSL_MEMORY_H
30#define WOLFSSL_MEMORY_H
31
32#include <stdlib.h>
33#include <wolfssl/wolfcrypt/types.h>
34
35#ifdef __cplusplus
36 extern "C" {
37#endif
38
39#ifdef WOLFSSL_FORCE_MALLOC_FAIL_TEST
40 WOLFSSL_API void wolfSSL_SetMemFailCount(int memFailCount);
41#endif
42
43#ifdef WOLFSSL_STATIC_MEMORY
44 #ifdef WOLFSSL_DEBUG_MEMORY
45 typedef void *(*wolfSSL_Malloc_cb)(size_t size, void* heap, int type, const char* func, unsigned int line);
46 typedef void (*wolfSSL_Free_cb)(void *ptr, void* heap, int type, const char* func, unsigned int line);
47 typedef void *(*wolfSSL_Realloc_cb)(void *ptr, size_t size, void* heap, int type, const char* func, unsigned int line);
48 WOLFSSL_API void* wolfSSL_Malloc(size_t size, void* heap, int type, const char* func, unsigned int line);
49 WOLFSSL_API void wolfSSL_Free(void *ptr, void* heap, int type, const char* func, unsigned int line);
50 WOLFSSL_API void* wolfSSL_Realloc(void *ptr, size_t size, void* heap, int type, const char* func, unsigned int line);
51 #else
52 typedef void *(*wolfSSL_Malloc_cb)(size_t size, void* heap, int type);
53 typedef void (*wolfSSL_Free_cb)(void *ptr, void* heap, int type);
54 typedef void *(*wolfSSL_Realloc_cb)(void *ptr, size_t size, void* heap, int type);
55 WOLFSSL_API void* wolfSSL_Malloc(size_t size, void* heap, int type);
56 WOLFSSL_API void wolfSSL_Free(void *ptr, void* heap, int type);
57 WOLFSSL_API void* wolfSSL_Realloc(void *ptr, size_t size, void* heap, int type);
58 #endif /* WOLFSSL_DEBUG_MEMORY */
59#else
60 #ifdef WOLFSSL_DEBUG_MEMORY
61 typedef void *(*wolfSSL_Malloc_cb)(size_t size, const char* func, unsigned int line);
62 typedef void (*wolfSSL_Free_cb)(void *ptr, const char* func, unsigned int line);
63 typedef void *(*wolfSSL_Realloc_cb)(void *ptr, size_t size, const char* func, unsigned int line);
64
65 /* Public in case user app wants to use XMALLOC/XFREE */
66 WOLFSSL_API void* wolfSSL_Malloc(size_t size, const char* func, unsigned int line);
67 WOLFSSL_API void wolfSSL_Free(void *ptr, const char* func, unsigned int line);
68 WOLFSSL_API void* wolfSSL_Realloc(void *ptr, size_t size, const char* func, unsigned int line);
69 #else
70 typedef void *(*wolfSSL_Malloc_cb)(size_t size);
71 typedef void (*wolfSSL_Free_cb)(void *ptr);
72 typedef void *(*wolfSSL_Realloc_cb)(void *ptr, size_t size);
73 /* Public in case user app wants to use XMALLOC/XFREE */
74 WOLFSSL_API void* wolfSSL_Malloc(size_t size);
75 WOLFSSL_API void wolfSSL_Free(void *ptr);
76 WOLFSSL_API void* wolfSSL_Realloc(void *ptr, size_t size);
77 #endif /* WOLFSSL_DEBUG_MEMORY */
78#endif /* WOLFSSL_STATIC_MEMORY */
79
80/* Public get/set functions */
81WOLFSSL_API int wolfSSL_SetAllocators(wolfSSL_Malloc_cb,
82 wolfSSL_Free_cb,
83 wolfSSL_Realloc_cb);
84WOLFSSL_API int wolfSSL_GetAllocators(wolfSSL_Malloc_cb*,
85 wolfSSL_Free_cb*,
86 wolfSSL_Realloc_cb*);
87
88#ifdef WOLFSSL_STATIC_MEMORY
89 #define WOLFSSL_STATIC_TIMEOUT 1
90 #ifndef WOLFSSL_STATIC_ALIGN
91 #define WOLFSSL_STATIC_ALIGN 16
92 #endif
93 #ifndef WOLFMEM_MAX_BUCKETS
94 #define WOLFMEM_MAX_BUCKETS 9
95 #endif
96 #define WOLFMEM_DEF_BUCKETS 9 /* number of default memory blocks */
97 #ifndef WOLFMEM_IO_SZ
98 #define WOLFMEM_IO_SZ 16992 /* 16 byte aligned */
99 #endif
100 #ifndef WOLFMEM_BUCKETS
101 #ifndef SESSION_CERTS
102 /* default size of chunks of memory to separate into */
103 #define WOLFMEM_BUCKETS 64,128,256,512,1024,2432,3456,4544,16128
104 #elif defined (WOLFSSL_CERT_EXT)
105 /* certificate extensions requires 24k for the SSL struct */
106 #define WOLFMEM_BUCKETS 64,128,256,512,1024,2432,3456,4544,24576
107 #else
108 /* increase 23k for object member of WOLFSSL_X509_NAME_ENTRY */
109 #define WOLFMEM_BUCKETS 64,128,256,512,1024,2432,3456,4544,23440
110 #endif
111 #endif
112 #ifndef WOLFMEM_DIST
113 #define WOLFMEM_DIST 49,10,6,14,5,6,9,1,1
114 #endif
115
116 /* flags for loading static memory (one hot bit) */
117 #define WOLFMEM_GENERAL 0x01
118 #define WOLFMEM_IO_POOL 0x02
119 #define WOLFMEM_IO_POOL_FIXED 0x04
120 #define WOLFMEM_TRACK_STATS 0x08
121
122 #ifndef WOLFSSL_MEM_GUARD
123 #define WOLFSSL_MEM_GUARD
124 typedef struct WOLFSSL_MEM_STATS WOLFSSL_MEM_STATS;
125 typedef struct WOLFSSL_MEM_CONN_STATS WOLFSSL_MEM_CONN_STATS;
126 #endif
127
128 struct WOLFSSL_MEM_CONN_STATS {
129 word32 peakMem; /* peak memory usage */
130 word32 curMem; /* current memory usage */
131 word32 peakAlloc; /* peak memory allocations */
132 word32 curAlloc; /* current memory allocations */
133 word32 totalAlloc;/* total memory allocations for lifetime */
134 word32 totalFr; /* total frees for lifetime */
135 };
136
137 struct WOLFSSL_MEM_STATS {
138 word32 curAlloc; /* current memory allocations */
139 word32 totalAlloc;/* total memory allocations for lifetime */
140 word32 totalFr; /* total frees for lifetime */
141 word32 totalUse; /* total amount of memory used in blocks */
142 word32 avaIO; /* available IO specific pools */
143 word32 maxHa; /* max number of concurent handshakes allowed */
144 word32 maxIO; /* max number of concurent IO connections allowed */
145 word32 blockSz[WOLFMEM_MAX_BUCKETS]; /* block sizes in stacks */
146 word32 avaBlock[WOLFMEM_MAX_BUCKETS];/* ava block sizes */
147 word32 usedBlock[WOLFMEM_MAX_BUCKETS];
148 int flag; /* flag used */
149 };
150
151 typedef struct wc_Memory wc_Memory; /* internal structure for mem bucket */
152 typedef struct WOLFSSL_HEAP {
153 wc_Memory* ava[WOLFMEM_MAX_BUCKETS];
154 wc_Memory* io; /* list of buffers to use for IO */
155 word32 maxHa; /* max concurent handshakes */
156 word32 curHa;
157 word32 maxIO; /* max concurrent IO connections */
158 word32 curIO;
159 word32 sizeList[WOLFMEM_MAX_BUCKETS];/* memory sizes in ava list */
160 word32 distList[WOLFMEM_MAX_BUCKETS];/* general distribution */
161 word32 inUse; /* amount of memory currently in use */
162 word32 ioUse;
163 word32 alloc; /* total number of allocs */
164 word32 frAlc; /* total number of frees */
165 int flag;
166 wolfSSL_Mutex memory_mutex;
167 } WOLFSSL_HEAP;
168
169 /* structure passed into XMALLOC as heap hint
170 * having this abstraction allows tracking statistics of individual ssl's
171 */
172 typedef struct WOLFSSL_HEAP_HINT {
173 WOLFSSL_HEAP* memory;
174 WOLFSSL_MEM_CONN_STATS* stats; /* hold individual connection stats */
175 wc_Memory* outBuf; /* set if using fixed io buffers */
176 wc_Memory* inBuf;
177 byte haFlag; /* flag used for checking handshake count */
178 } WOLFSSL_HEAP_HINT;
179
180 WOLFSSL_API int wc_LoadStaticMemory(WOLFSSL_HEAP_HINT** pHint,
181 unsigned char* buf, unsigned int sz, int flag, int max);
182
183 WOLFSSL_LOCAL int wolfSSL_init_memory_heap(WOLFSSL_HEAP* heap);
184 WOLFSSL_LOCAL int wolfSSL_load_static_memory(byte* buffer, word32 sz,
185 int flag, WOLFSSL_HEAP* heap);
186 WOLFSSL_LOCAL int wolfSSL_GetMemStats(WOLFSSL_HEAP* heap,
187 WOLFSSL_MEM_STATS* stats);
188 WOLFSSL_LOCAL int SetFixedIO(WOLFSSL_HEAP* heap, wc_Memory** io);
189 WOLFSSL_LOCAL int FreeFixedIO(WOLFSSL_HEAP* heap, wc_Memory** io);
190
191 WOLFSSL_API int wolfSSL_StaticBufferSz(byte* buffer, word32 sz, int flag);
192 WOLFSSL_API int wolfSSL_MemoryPaddingSz(void);
193#endif /* WOLFSSL_STATIC_MEMORY */
194
195#ifdef __cplusplus
196 } /* extern "C" */
197#endif
198
199#endif /* WOLFSSL_MEMORY_H */
200
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