[337] | 1 | /* memory.h
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| 2 | *
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| 3 | * Copyright (C) 2006-2017 wolfSSL Inc.
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| 4 | *
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| 5 | * This file is part of wolfSSL.
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| 6 | *
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| 7 | * wolfSSL is free software; you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation; either version 2 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * wolfSSL is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with this program; if not, write to the Free Software
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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| 20 | */
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| 21 |
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| 22 |
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| 23 | /* submitted by eof */
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| 24 |
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| 25 |
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| 26 | #ifndef WOLFSSL_MEMORY_H
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| 27 | #define WOLFSSL_MEMORY_H
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| 28 |
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| 29 | #include <stdlib.h>
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| 30 | #include <wolfssl/wolfcrypt/types.h>
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| 31 |
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| 32 | #ifdef __cplusplus
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| 33 | extern "C" {
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| 34 | #endif
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| 35 |
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| 36 | #ifdef WOLFSSL_STATIC_MEMORY
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| 37 | #ifdef WOLFSSL_DEBUG_MEMORY
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| 38 | typedef void *(*wolfSSL_Malloc_cb)(size_t size, void* heap, int type, const char* func, unsigned int line);
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| 39 | typedef void (*wolfSSL_Free_cb)(void *ptr, void* heap, int type, const char* func, unsigned int line);
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| 40 | typedef void *(*wolfSSL_Realloc_cb)(void *ptr, size_t size, void* heap, int type, const char* func, unsigned int line);
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| 41 | WOLFSSL_API void* wolfSSL_Malloc(size_t size, void* heap, int type, const char* func, unsigned int line);
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| 42 | WOLFSSL_API void wolfSSL_Free(void *ptr, void* heap, int type, const char* func, unsigned int line);
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| 43 | WOLFSSL_API void* wolfSSL_Realloc(void *ptr, size_t size, void* heap, int type, const char* func, unsigned int line);
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| 44 | #else
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| 45 | typedef void *(*wolfSSL_Malloc_cb)(size_t size, void* heap, int type);
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| 46 | typedef void (*wolfSSL_Free_cb)(void *ptr, void* heap, int type);
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| 47 | typedef void *(*wolfSSL_Realloc_cb)(void *ptr, size_t size, void* heap, int type);
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| 48 | WOLFSSL_API void* wolfSSL_Malloc(size_t size, void* heap, int type);
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| 49 | WOLFSSL_API void wolfSSL_Free(void *ptr, void* heap, int type);
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| 50 | WOLFSSL_API void* wolfSSL_Realloc(void *ptr, size_t size, void* heap, int type);
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| 51 | #endif /* WOLFSSL_DEBUG_MEMORY */
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| 52 | #else
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| 53 | #ifdef WOLFSSL_DEBUG_MEMORY
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| 54 | typedef void *(*wolfSSL_Malloc_cb)(size_t size, const char* func, unsigned int line);
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| 55 | typedef void (*wolfSSL_Free_cb)(void *ptr, const char* func, unsigned int line);
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| 56 | typedef void *(*wolfSSL_Realloc_cb)(void *ptr, size_t size, const char* func, unsigned int line);
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| 57 |
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| 58 | /* Public in case user app wants to use XMALLOC/XFREE */
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| 59 | WOLFSSL_API void* wolfSSL_Malloc(size_t size, const char* func, unsigned int line);
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| 60 | WOLFSSL_API void wolfSSL_Free(void *ptr, const char* func, unsigned int line);
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| 61 | WOLFSSL_API void* wolfSSL_Realloc(void *ptr, size_t size, const char* func, unsigned int line);
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| 62 | #else
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| 63 | typedef void *(*wolfSSL_Malloc_cb)(size_t size);
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| 64 | typedef void (*wolfSSL_Free_cb)(void *ptr);
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| 65 | typedef void *(*wolfSSL_Realloc_cb)(void *ptr, size_t size);
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| 66 | /* Public in case user app wants to use XMALLOC/XFREE */
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| 67 | WOLFSSL_API void* wolfSSL_Malloc(size_t size);
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| 68 | WOLFSSL_API void wolfSSL_Free(void *ptr);
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| 69 | WOLFSSL_API void* wolfSSL_Realloc(void *ptr, size_t size);
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| 70 | #endif /* WOLFSSL_DEBUG_MEMORY */
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| 71 | #endif /* WOLFSSL_STATIC_MEMORY */
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| 72 |
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| 73 | /* Public get/set functions */
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| 74 | WOLFSSL_API int wolfSSL_SetAllocators(wolfSSL_Malloc_cb,
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| 75 | wolfSSL_Free_cb,
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| 76 | wolfSSL_Realloc_cb);
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| 77 |
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| 78 | WOLFSSL_API int wolfSSL_GetAllocators(wolfSSL_Malloc_cb*,
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| 79 | wolfSSL_Free_cb*,
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| 80 | wolfSSL_Realloc_cb*);
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| 81 |
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| 82 | #ifdef WOLFSSL_STATIC_MEMORY
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| 83 | #define WOLFSSL_STATIC_TIMEOUT 1
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| 84 | #ifndef WOLFSSL_STATIC_ALIGN
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| 85 | #define WOLFSSL_STATIC_ALIGN 16
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| 86 | #endif
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| 87 | #ifndef WOLFMEM_MAX_BUCKETS
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| 88 | #define WOLFMEM_MAX_BUCKETS 9
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| 89 | #endif
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| 90 | #define WOLFMEM_DEF_BUCKETS 9 /* number of default memory blocks */
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| 91 | #define WOLFMEM_IO_SZ 16992 /* 16 byte aligned */
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| 92 | #ifndef WOLFMEM_BUCKETS
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| 93 | /* default size of chunks of memory to seperate into
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| 94 | * having session certs enabled makes a 21k SSL struct */
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| 95 | #ifndef SESSION_CERTS
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| 96 | #define WOLFMEM_BUCKETS 64,128,256,512,1024,2432,3456,4544,16128
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| 97 | #else
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| 98 | #define WOLFMEM_BUCKETS 64,128,256,512,1024,2432,3456,4544,21056
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| 99 | #endif
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| 100 | #endif
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| 101 | #ifndef WOLFMEM_DIST
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| 102 | #define WOLFMEM_DIST 8,4,4,12,4,5,8,1,1
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| 103 | #endif
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| 104 |
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| 105 | /* flags for loading static memory (one hot bit) */
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| 106 | #define WOLFMEM_GENERAL 0x01
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| 107 | #define WOLFMEM_IO_POOL 0x02
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| 108 | #define WOLFMEM_IO_POOL_FIXED 0x04
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| 109 | #define WOLFMEM_TRACK_STATS 0x08
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| 110 |
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| 111 | #ifndef WOLFSSL_MEM_GUARD
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| 112 | #define WOLFSSL_MEM_GUARD
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| 113 | typedef struct WOLFSSL_MEM_STATS WOLFSSL_MEM_STATS;
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| 114 | typedef struct WOLFSSL_MEM_CONN_STATS WOLFSSL_MEM_CONN_STATS;
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| 115 | #endif
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| 116 |
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| 117 | struct WOLFSSL_MEM_CONN_STATS {
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| 118 | word32 peakMem; /* peak memory usage */
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| 119 | word32 curMem; /* current memory usage */
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| 120 | word32 peakAlloc; /* peak memory allocations */
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| 121 | word32 curAlloc; /* current memory allocations */
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| 122 | word32 totalAlloc;/* total memory allocations for lifetime */
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| 123 | word32 totalFr; /* total frees for lifetime */
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| 124 | };
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| 125 |
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| 126 | struct WOLFSSL_MEM_STATS {
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| 127 | word32 curAlloc; /* current memory allocations */
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| 128 | word32 totalAlloc;/* total memory allocations for lifetime */
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| 129 | word32 totalFr; /* total frees for lifetime */
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| 130 | word32 totalUse; /* total amount of memory used in blocks */
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| 131 | word32 avaIO; /* available IO specific pools */
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| 132 | word32 maxHa; /* max number of concurent handshakes allowed */
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| 133 | word32 maxIO; /* max number of concurent IO connections allowed */
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| 134 | word32 blockSz[WOLFMEM_MAX_BUCKETS]; /* block sizes in stacks */
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| 135 | word32 avaBlock[WOLFMEM_MAX_BUCKETS];/* ava block sizes */
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| 136 | word32 usedBlock[WOLFMEM_MAX_BUCKETS];
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| 137 | int flag; /* flag used */
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| 138 | };
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| 139 |
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| 140 | typedef struct wc_Memory wc_Memory; /* internal structure for mem bucket */
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| 141 | typedef struct WOLFSSL_HEAP {
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| 142 | wc_Memory* ava[WOLFMEM_MAX_BUCKETS];
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| 143 | wc_Memory* io; /* list of buffers to use for IO */
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| 144 | word32 maxHa; /* max concurent handshakes */
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| 145 | word32 curHa;
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| 146 | word32 maxIO; /* max concurrent IO connections */
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| 147 | word32 curIO;
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| 148 | word32 sizeList[WOLFMEM_MAX_BUCKETS];/* memory sizes in ava list */
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| 149 | word32 distList[WOLFMEM_MAX_BUCKETS];/* general distribution */
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| 150 | word32 inUse; /* amount of memory currently in use */
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| 151 | word32 ioUse;
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| 152 | word32 alloc; /* total number of allocs */
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| 153 | word32 frAlc; /* total number of frees */
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| 154 | int flag;
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| 155 | wolfSSL_Mutex memory_mutex;
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| 156 | } WOLFSSL_HEAP;
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| 157 |
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| 158 | /* structure passed into XMALLOC as heap hint
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| 159 | * having this abstraction allows tracking statistics of individual ssl's
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| 160 | */
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| 161 | typedef struct WOLFSSL_HEAP_HINT {
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| 162 | WOLFSSL_HEAP* memory;
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| 163 | WOLFSSL_MEM_CONN_STATS* stats; /* hold individual connection stats */
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| 164 | wc_Memory* outBuf; /* set if using fixed io buffers */
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| 165 | wc_Memory* inBuf;
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| 166 | byte haFlag; /* flag used for checking handshake count */
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| 167 | } WOLFSSL_HEAP_HINT;
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| 168 |
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| 169 | WOLFSSL_API int wc_LoadStaticMemory(WOLFSSL_HEAP_HINT** pHint,
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| 170 | unsigned char* buf, unsigned int sz, int flag, int max);
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| 171 |
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| 172 | WOLFSSL_LOCAL int wolfSSL_init_memory_heap(WOLFSSL_HEAP* heap);
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| 173 | WOLFSSL_LOCAL int wolfSSL_load_static_memory(byte* buffer, word32 sz,
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| 174 | int flag, WOLFSSL_HEAP* heap);
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| 175 | WOLFSSL_LOCAL int wolfSSL_GetMemStats(WOLFSSL_HEAP* heap,
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| 176 | WOLFSSL_MEM_STATS* stats);
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| 177 | WOLFSSL_LOCAL int SetFixedIO(WOLFSSL_HEAP* heap, wc_Memory** io);
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| 178 | WOLFSSL_LOCAL int FreeFixedIO(WOLFSSL_HEAP* heap, wc_Memory** io);
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| 179 |
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| 180 | WOLFSSL_API int wolfSSL_StaticBufferSz(byte* buffer, word32 sz, int flag);
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| 181 | WOLFSSL_API int wolfSSL_MemoryPaddingSz(void);
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| 182 | #endif /* WOLFSSL_STATIC_MEMORY */
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| 183 |
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| 184 | #ifdef __cplusplus
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| 185 | } /* extern "C" */
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| 186 | #endif
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| 187 |
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| 188 | #endif /* WOLFSSL_MEMORY_H */
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| 189 |
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