/*
* alloc . c
*
* memory allocation and deallocation
*
* David A . McGrew
* Cisco Systems , Inc .
*/
/*
*
* Copyright ( c ) 2001 - 2017 Cisco Systems , Inc .
* All rights reserved .
*
* Redistribution and use in source and binary forms , with or without
* modification , are permitted provided that the following conditions
* are met :
*
* Redistributions of source code must retain the above copyright
* notice , this list of conditions and the following disclaimer .
*
* Redistributions in binary form must reproduce the above
* copyright notice , this list of conditions and the following
* disclaimer in the documentation and / or other materials provided
* with the distribution .
*
* Neither the name of the Cisco Systems , Inc . nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission .
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* " AS IS " AND ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT
* LIMITED TO , THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED . IN NO EVENT SHALL THE
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT ,
* INDIRECT , INCIDENTAL , SPECIAL , EXEMPLARY , OR CONSEQUENTIAL DAMAGES
* ( INCLUDING , BUT NOT LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES ; LOSS OF USE , DATA , OR PROFITS ; OR BUSINESS INTERRUPTION )
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY , WHETHER IN CONTRACT ,
* STRICT LIABILITY , OR TORT ( INCLUDING NEGLIGENCE OR OTHERWISE )
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE , EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE .
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "alloc.h"
#include "crypto_kernel.h"
/* the debug module for memory allocation */
srtp_debug_module_t srtp_mod_alloc = {
0 , /* debugging is off by default */
"alloc" /* printable name for module */
};
/*
* Nota bene : the debugging statements for srtp_crypto_alloc ( ) and
* srtp_crypto_free ( ) have identical prefixes , which include the addresses
* of the memory locations on which they are operating . This fact can
* be used to locate memory leaks , by turning on memory debugging ,
* grepping for ' alloc ' , then matching alloc and free calls by
* address .
*/
#if defined (HAVE_STDLIB_H)
void *srtp_crypto_alloc(size_t size)
{
void *ptr;
if (!size) {
return NULL;
}
ptr = calloc(1 , size);
if (ptr) {
debug_print(srtp_mod_alloc, "(location: %p) allocated" , ptr);
} else {
debug_print(srtp_mod_alloc, "allocation failed (asked for %zu bytes)\n" ,
size);
}
return ptr;
}
void srtp_crypto_free(void *ptr)
{
debug_print(srtp_mod_alloc, "(location: %p) freed" , ptr);
free(ptr);
}
#else /* we need to define our own memory allocation routines */
#error no memory allocation defined yet
#endif
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