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238 lines
10 KiB
C
238 lines
10 KiB
C
/* memory.h
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*
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* Copyright (C) 2006-2021 wolfSSL Inc.
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*
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* This file is part of wolfSSL.
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*
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* wolfSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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/* submitted by eof */
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/*!
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\file wolfssl/wolfcrypt/memory.h
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*/
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#ifndef WOLFSSL_MEMORY_H
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#define WOLFSSL_MEMORY_H
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#if !defined(STRING_USER) && !defined(WOLFSSL_LINUXKM)
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#include <stdlib.h>
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#endif
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#include <libwolfssl/wolfcrypt/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef WOLFSSL_FORCE_MALLOC_FAIL_TEST
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WOLFSSL_API void wolfSSL_SetMemFailCount(int memFailCount);
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#endif
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#ifdef WOLFSSL_STATIC_MEMORY
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#ifdef WOLFSSL_DEBUG_MEMORY
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typedef void *(*wolfSSL_Malloc_cb)(size_t size, void* heap, int type, const char* func, unsigned int line);
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typedef void (*wolfSSL_Free_cb)(void *ptr, void* heap, int type, const char* func, unsigned int line);
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typedef void *(*wolfSSL_Realloc_cb)(void *ptr, size_t size, void* heap, int type, const char* func, unsigned int line);
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WOLFSSL_API void* wolfSSL_Malloc(size_t size, void* heap, int type, const char* func, unsigned int line);
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WOLFSSL_API void wolfSSL_Free(void *ptr, void* heap, int type, const char* func, unsigned int line);
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WOLFSSL_API void* wolfSSL_Realloc(void *ptr, size_t size, void* heap, int type, const char* func, unsigned int line);
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#else
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typedef void *(*wolfSSL_Malloc_cb)(size_t size, void* heap, int type);
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typedef void (*wolfSSL_Free_cb)(void *ptr, void* heap, int type);
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typedef void *(*wolfSSL_Realloc_cb)(void *ptr, size_t size, void* heap, int type);
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WOLFSSL_API void* wolfSSL_Malloc(size_t size, void* heap, int type);
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WOLFSSL_API void wolfSSL_Free(void *ptr, void* heap, int type);
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WOLFSSL_API void* wolfSSL_Realloc(void *ptr, size_t size, void* heap, int type);
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#endif /* WOLFSSL_DEBUG_MEMORY */
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#else
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#ifdef WOLFSSL_DEBUG_MEMORY
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typedef void *(*wolfSSL_Malloc_cb)(size_t size, const char* func, unsigned int line);
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typedef void (*wolfSSL_Free_cb)(void *ptr, const char* func, unsigned int line);
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typedef void *(*wolfSSL_Realloc_cb)(void *ptr, size_t size, const char* func, unsigned int line);
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/* Public in case user app wants to use XMALLOC/XFREE */
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WOLFSSL_API void* wolfSSL_Malloc(size_t size, const char* func, unsigned int line);
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WOLFSSL_API void wolfSSL_Free(void *ptr, const char* func, unsigned int line);
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WOLFSSL_API void* wolfSSL_Realloc(void *ptr, size_t size, const char* func, unsigned int line);
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#else
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typedef void *(*wolfSSL_Malloc_cb)(size_t size);
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typedef void (*wolfSSL_Free_cb)(void *ptr);
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typedef void *(*wolfSSL_Realloc_cb)(void *ptr, size_t size);
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/* Public in case user app wants to use XMALLOC/XFREE */
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WOLFSSL_API void* wolfSSL_Malloc(size_t size);
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WOLFSSL_API void wolfSSL_Free(void *ptr);
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WOLFSSL_API void* wolfSSL_Realloc(void *ptr, size_t size);
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#endif /* WOLFSSL_DEBUG_MEMORY */
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#endif /* WOLFSSL_STATIC_MEMORY */
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/* Public get/set functions */
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WOLFSSL_API int wolfSSL_SetAllocators(wolfSSL_Malloc_cb,
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wolfSSL_Free_cb,
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wolfSSL_Realloc_cb);
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WOLFSSL_API int wolfSSL_GetAllocators(wolfSSL_Malloc_cb*,
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wolfSSL_Free_cb*,
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wolfSSL_Realloc_cb*);
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#ifdef WOLFSSL_STATIC_MEMORY
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#define WOLFSSL_STATIC_TIMEOUT 1
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#ifndef WOLFSSL_STATIC_ALIGN
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#define WOLFSSL_STATIC_ALIGN 16
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#endif
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#ifndef WOLFMEM_MAX_BUCKETS
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#define WOLFMEM_MAX_BUCKETS 9
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#endif
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#define WOLFMEM_DEF_BUCKETS 9 /* number of default memory blocks */
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#ifndef WOLFMEM_IO_SZ
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#define WOLFMEM_IO_SZ 16992 /* 16 byte aligned */
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#endif
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#ifndef WOLFMEM_BUCKETS
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#ifndef SESSION_CERTS
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/* default size of chunks of memory to separate into */
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#ifndef LARGEST_MEM_BUCKET
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#define LARGEST_MEM_BUCKET 16128
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#endif
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#define WOLFMEM_BUCKETS 64,128,256,512,1024,2432,3456,4544,\
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LARGEST_MEM_BUCKET
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#elif defined (OPENSSL_EXTRA)
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/* extra storage in structs for multiple attributes and order */
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#ifndef LARGEST_MEM_BUCKET
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#ifdef WOLFSSL_TLS13
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#define LARGEST_MEM_BUCKET 30400
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#else
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#define LARGEST_MEM_BUCKET 25600
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#endif
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#endif
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#define WOLFMEM_BUCKETS 64,128,256,512,1024,2432,3360,4480,\
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LARGEST_MEM_BUCKET
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#elif defined (WOLFSSL_CERT_EXT)
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/* certificate extensions requires 24k for the SSL struct */
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#ifndef LARGEST_MEM_BUCKET
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#define LARGEST_MEM_BUCKET 24576
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#endif
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#define WOLFMEM_BUCKETS 64,128,256,512,1024,2432,3456,4544,\
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LARGEST_MEM_BUCKET
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#else
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/* increase 23k for object member of WOLFSSL_X509_NAME_ENTRY */
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#ifndef LARGEST_MEM_BUCKET
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#define LARGEST_MEM_BUCKET 23440
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#endif
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#define WOLFMEM_BUCKETS 64,128,256,512,1024,2432,3456,4544,\
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LARGEST_MEM_BUCKET
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#endif
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#endif
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#ifndef WOLFMEM_DIST
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#ifndef WOLFSSL_STATIC_MEMORY_SMALL
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#define WOLFMEM_DIST 49,10,6,14,5,6,9,1,1
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#else
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/* Low resource and not RSA */
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#define WOLFMEM_DIST 29, 7,6, 9,4,4,0,0,0
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#endif
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#endif
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/* flags for loading static memory (one hot bit) */
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#define WOLFMEM_GENERAL 0x01
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#define WOLFMEM_IO_POOL 0x02
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#define WOLFMEM_IO_POOL_FIXED 0x04
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#define WOLFMEM_TRACK_STATS 0x08
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#ifndef WOLFSSL_MEM_GUARD
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#define WOLFSSL_MEM_GUARD
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typedef struct WOLFSSL_MEM_STATS WOLFSSL_MEM_STATS;
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typedef struct WOLFSSL_MEM_CONN_STATS WOLFSSL_MEM_CONN_STATS;
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#endif
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struct WOLFSSL_MEM_CONN_STATS {
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word32 peakMem; /* peak memory usage */
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word32 curMem; /* current memory usage */
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word32 peakAlloc; /* peak memory allocations */
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word32 curAlloc; /* current memory allocations */
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word32 totalAlloc;/* total memory allocations for lifetime */
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word32 totalFr; /* total frees for lifetime */
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};
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struct WOLFSSL_MEM_STATS {
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word32 curAlloc; /* current memory allocations */
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word32 totalAlloc;/* total memory allocations for lifetime */
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word32 totalFr; /* total frees for lifetime */
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word32 totalUse; /* total amount of memory used in blocks */
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word32 avaIO; /* available IO specific pools */
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word32 maxHa; /* max number of concurrent handshakes allowed */
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word32 maxIO; /* max number of concurrent IO connections allowed */
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word32 blockSz[WOLFMEM_MAX_BUCKETS]; /* block sizes in stacks */
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word32 avaBlock[WOLFMEM_MAX_BUCKETS];/* ava block sizes */
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word32 usedBlock[WOLFMEM_MAX_BUCKETS];
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int flag; /* flag used */
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};
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typedef struct wc_Memory wc_Memory; /* internal structure for mem bucket */
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typedef struct WOLFSSL_HEAP {
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wc_Memory* ava[WOLFMEM_MAX_BUCKETS];
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wc_Memory* io; /* list of buffers to use for IO */
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word32 maxHa; /* max concurrent handshakes */
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word32 curHa;
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word32 maxIO; /* max concurrent IO connections */
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word32 curIO;
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word32 sizeList[WOLFMEM_MAX_BUCKETS];/* memory sizes in ava list */
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word32 distList[WOLFMEM_MAX_BUCKETS];/* general distribution */
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word32 inUse; /* amount of memory currently in use */
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word32 ioUse;
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word32 alloc; /* total number of allocs */
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word32 frAlc; /* total number of frees */
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int flag;
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wolfSSL_Mutex memory_mutex;
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} WOLFSSL_HEAP;
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/* structure passed into XMALLOC as heap hint
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* having this abstraction allows tracking statistics of individual ssl's
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*/
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typedef struct WOLFSSL_HEAP_HINT {
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WOLFSSL_HEAP* memory;
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WOLFSSL_MEM_CONN_STATS* stats; /* hold individual connection stats */
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wc_Memory* outBuf; /* set if using fixed io buffers */
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wc_Memory* inBuf;
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byte haFlag; /* flag used for checking handshake count */
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} WOLFSSL_HEAP_HINT;
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WOLFSSL_API int wc_LoadStaticMemory(WOLFSSL_HEAP_HINT** pHint,
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unsigned char* buf, unsigned int sz, int flag, int max);
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WOLFSSL_LOCAL int wolfSSL_init_memory_heap(WOLFSSL_HEAP* heap);
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WOLFSSL_LOCAL int wolfSSL_load_static_memory(byte* buffer, word32 sz,
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int flag, WOLFSSL_HEAP* heap);
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WOLFSSL_LOCAL int wolfSSL_GetMemStats(WOLFSSL_HEAP* heap,
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WOLFSSL_MEM_STATS* stats);
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WOLFSSL_LOCAL int SetFixedIO(WOLFSSL_HEAP* heap, wc_Memory** io);
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WOLFSSL_LOCAL int FreeFixedIO(WOLFSSL_HEAP* heap, wc_Memory** io);
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WOLFSSL_API int wolfSSL_StaticBufferSz(byte* buffer, word32 sz, int flag);
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WOLFSSL_API int wolfSSL_MemoryPaddingSz(void);
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#endif /* WOLFSSL_STATIC_MEMORY */
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#ifdef WOLFSSL_STACK_LOG
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WOLFSSL_API void __attribute__((no_instrument_function))
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__cyg_profile_func_enter(void *func, void *caller);
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WOLFSSL_API void __attribute__((no_instrument_function))
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__cyg_profile_func_exit(void *func, void *caller);
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#endif /* WOLFSSL_STACK_LOG */
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* WOLFSSL_MEMORY_H */
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