102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
/*
|
|
* 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
|