SSL/TLS Library
CyaSSL is SSL/TLS library for embedded systems.
Diff: ctaocrypt/src/memory.c
- Revision:
- 0:9d17e4342598
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ctaocrypt/src/memory.c Sun Apr 20 12:40:57 2014 +0000 @@ -0,0 +1,183 @@ +/* memory.c + * + * Copyright (C) 2006-2013 wolfSSL Inc. + * + * This file is part of CyaSSL. + * + * CyaSSL is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * CyaSSL is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#ifdef HAVE_CONFIG_H + #include <config.h> +#endif + +#include <cyassl/ctaocrypt/settings.h> + +#ifdef USE_CYASSL_MEMORY + +#include <cyassl/ctaocrypt/memory.h> +#include <cyassl/ctaocrypt/error-crypt.h> + +#ifdef CYASSL_MALLOC_CHECK + #include <stdio.h> +#endif + +/* Set these to default values initially. */ +static CyaSSL_Malloc_cb malloc_function = 0; +static CyaSSL_Free_cb free_function = 0; +static CyaSSL_Realloc_cb realloc_function = 0; + +int CyaSSL_SetAllocators(CyaSSL_Malloc_cb mf, + CyaSSL_Free_cb ff, + CyaSSL_Realloc_cb rf) +{ + int res = 0; + + if (mf) + malloc_function = mf; + else + res = BAD_FUNC_ARG; + + if (ff) + free_function = ff; + else + res = BAD_FUNC_ARG; + + if (rf) + realloc_function = rf; + else + res = BAD_FUNC_ARG; + + return res; +} + + +void* CyaSSL_Malloc(size_t size) +{ + void* res = 0; + + if (malloc_function) + res = malloc_function(size); + else + res = malloc(size); + + #ifdef CYASSL_MALLOC_CHECK + if (res == NULL) + puts("CyaSSL_malloc failed"); + #endif + + return res; +} + +void CyaSSL_Free(void *ptr) +{ + if (free_function) + free_function(ptr); + else + free(ptr); +} + +void* CyaSSL_Realloc(void *ptr, size_t size) +{ + void* res = 0; + + if (realloc_function) + res = realloc_function(ptr, size); + else + res = realloc(ptr, size); + + return res; +} + +#endif /* USE_CYASSL_MEMORY */ + + +#ifdef HAVE_IO_POOL + +/* Example for user io pool, shared build may need definitions in lib proper */ + +#include <cyassl/ctaocrypt/types.h> +#include <stdlib.h> + +#ifndef HAVE_THREAD_LS + #error "Oops, simple I/O pool example needs thread local storage" +#endif + + +/* allow simple per thread in and out pools */ +/* use 17k size sense max record size is 16k plus overhead */ +static THREAD_LS_T byte pool_in[17*1024]; +static THREAD_LS_T byte pool_out[17*1024]; + + +void* XMALLOC(size_t n, void* heap, int type) +{ + (void)heap; + + if (type == DYNAMIC_TYPE_IN_BUFFER) { + if (n < sizeof(pool_in)) + return pool_in; + else + return NULL; + } + + if (type == DYNAMIC_TYPE_OUT_BUFFER) { + if (n < sizeof(pool_out)) + return pool_out; + else + return NULL; + } + + return malloc(n); +} + +void* XREALLOC(void *p, size_t n, void* heap, int type) +{ + (void)heap; + + if (type == DYNAMIC_TYPE_IN_BUFFER) { + if (n < sizeof(pool_in)) + return pool_in; + else + return NULL; + } + + if (type == DYNAMIC_TYPE_OUT_BUFFER) { + if (n < sizeof(pool_out)) + return pool_out; + else + return NULL; + } + + return realloc(p, n); +} + + +/* unit api calls, let's make sure visisble with CYASSL_API */ +CYASSL_API void XFREE(void *p, void* heap, int type) +{ + (void)heap; + + if (type == DYNAMIC_TYPE_IN_BUFFER) + return; /* do nothing, static pool */ + + if (type == DYNAMIC_TYPE_OUT_BUFFER) + return; /* do nothing, static pool */ + + free(p); +} + +#endif /* HAVE_IO_POOL */ +