forked from wolfSSL/wolfssl
184 lines
3.8 KiB
C
184 lines
3.8 KiB
C
/* memory.c
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*
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* Copyright (C) 2006-2014 wolfSSL Inc.
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*
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* This file is part of CyaSSL.
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*
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* CyaSSL 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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* CyaSSL 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 02110-1301, USA
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <cyassl/ctaocrypt/settings.h>
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#ifdef USE_CYASSL_MEMORY
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#include <cyassl/ctaocrypt/memory.h>
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#include <cyassl/ctaocrypt/error-crypt.h>
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#ifdef CYASSL_MALLOC_CHECK
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#include <stdio.h>
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#endif
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/* Set these to default values initially. */
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static CyaSSL_Malloc_cb malloc_function = 0;
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static CyaSSL_Free_cb free_function = 0;
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static CyaSSL_Realloc_cb realloc_function = 0;
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int CyaSSL_SetAllocators(CyaSSL_Malloc_cb mf,
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CyaSSL_Free_cb ff,
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CyaSSL_Realloc_cb rf)
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{
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int res = 0;
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if (mf)
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malloc_function = mf;
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else
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res = BAD_FUNC_ARG;
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if (ff)
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free_function = ff;
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else
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res = BAD_FUNC_ARG;
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if (rf)
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realloc_function = rf;
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else
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res = BAD_FUNC_ARG;
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return res;
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}
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void* CyaSSL_Malloc(size_t size)
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{
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void* res = 0;
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if (malloc_function)
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res = malloc_function(size);
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else
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res = malloc(size);
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#ifdef CYASSL_MALLOC_CHECK
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if (res == NULL)
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puts("CyaSSL_malloc failed");
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#endif
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return res;
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}
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void CyaSSL_Free(void *ptr)
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{
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if (free_function)
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free_function(ptr);
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else
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free(ptr);
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}
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void* CyaSSL_Realloc(void *ptr, size_t size)
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{
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void* res = 0;
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if (realloc_function)
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res = realloc_function(ptr, size);
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else
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res = realloc(ptr, size);
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return res;
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}
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#endif /* USE_CYASSL_MEMORY */
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#ifdef HAVE_IO_POOL
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/* Example for user io pool, shared build may need definitions in lib proper */
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#include <cyassl/ctaocrypt/types.h>
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#include <stdlib.h>
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#ifndef HAVE_THREAD_LS
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#error "Oops, simple I/O pool example needs thread local storage"
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#endif
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/* allow simple per thread in and out pools */
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/* use 17k size sense max record size is 16k plus overhead */
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static THREAD_LS_T byte pool_in[17*1024];
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static THREAD_LS_T byte pool_out[17*1024];
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void* XMALLOC(size_t n, void* heap, int type)
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{
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(void)heap;
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if (type == DYNAMIC_TYPE_IN_BUFFER) {
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if (n < sizeof(pool_in))
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return pool_in;
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else
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return NULL;
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}
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if (type == DYNAMIC_TYPE_OUT_BUFFER) {
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if (n < sizeof(pool_out))
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return pool_out;
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else
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return NULL;
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}
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return malloc(n);
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}
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void* XREALLOC(void *p, size_t n, void* heap, int type)
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{
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(void)heap;
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if (type == DYNAMIC_TYPE_IN_BUFFER) {
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if (n < sizeof(pool_in))
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return pool_in;
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else
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return NULL;
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}
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if (type == DYNAMIC_TYPE_OUT_BUFFER) {
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if (n < sizeof(pool_out))
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return pool_out;
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else
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return NULL;
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}
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return realloc(p, n);
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}
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/* unit api calls, let's make sure visisble with CYASSL_API */
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CYASSL_API void XFREE(void *p, void* heap, int type)
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{
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(void)heap;
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if (type == DYNAMIC_TYPE_IN_BUFFER)
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return; /* do nothing, static pool */
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if (type == DYNAMIC_TYPE_OUT_BUFFER)
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return; /* do nothing, static pool */
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free(p);
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}
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#endif /* HAVE_IO_POOL */
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