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