/src/libsrtp/crypto/kernel/alloc.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * alloc.c |
3 | | * |
4 | | * memory allocation and deallocation |
5 | | * |
6 | | * David A. McGrew |
7 | | * Cisco Systems, Inc. |
8 | | */ |
9 | | /* |
10 | | * |
11 | | * Copyright (c) 2001-2017 Cisco Systems, Inc. |
12 | | * All rights reserved. |
13 | | * |
14 | | * Redistribution and use in source and binary forms, with or without |
15 | | * modification, are permitted provided that the following conditions |
16 | | * are met: |
17 | | * |
18 | | * Redistributions of source code must retain the above copyright |
19 | | * notice, this list of conditions and the following disclaimer. |
20 | | * |
21 | | * Redistributions in binary form must reproduce the above |
22 | | * copyright notice, this list of conditions and the following |
23 | | * disclaimer in the documentation and/or other materials provided |
24 | | * with the distribution. |
25 | | * |
26 | | * Neither the name of the Cisco Systems, Inc. nor the names of its |
27 | | * contributors may be used to endorse or promote products derived |
28 | | * from this software without specific prior written permission. |
29 | | * |
30 | | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
31 | | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
32 | | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
33 | | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
34 | | * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
35 | | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
36 | | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
37 | | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
38 | | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
39 | | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
40 | | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
41 | | * OF THE POSSIBILITY OF SUCH DAMAGE. |
42 | | * |
43 | | */ |
44 | | |
45 | | #ifdef HAVE_CONFIG_H |
46 | | #include <config.h> |
47 | | #endif |
48 | | |
49 | | #include "alloc.h" |
50 | | #include "crypto_kernel.h" |
51 | | |
52 | | /* the debug module for memory allocation */ |
53 | | |
54 | | srtp_debug_module_t srtp_mod_alloc = { |
55 | | 0, /* debugging is off by default */ |
56 | | "alloc" /* printable name for module */ |
57 | | }; |
58 | | |
59 | | /* |
60 | | * Nota bene: the debugging statements for srtp_crypto_alloc() and |
61 | | * srtp_crypto_free() have identical prefixes, which include the addresses |
62 | | * of the memory locations on which they are operating. This fact can |
63 | | * be used to locate memory leaks, by turning on memory debugging, |
64 | | * grepping for 'alloc', then matching alloc and free calls by |
65 | | * address. |
66 | | */ |
67 | | |
68 | | #if defined(HAVE_STDLIB_H) |
69 | | |
70 | | void *srtp_crypto_alloc(size_t size) |
71 | 156k | { |
72 | 156k | void *ptr; |
73 | | |
74 | 156k | if (!size) { |
75 | 0 | return NULL; |
76 | 0 | } |
77 | | |
78 | 156k | ptr = calloc(1, size); |
79 | | |
80 | 156k | if (ptr) { |
81 | 156k | debug_print(srtp_mod_alloc, "(location: %p) allocated", ptr); |
82 | 156k | } else { |
83 | 0 | debug_print(srtp_mod_alloc, "allocation failed (asked for %zu bytes)\n", |
84 | 0 | size); |
85 | 0 | } |
86 | | |
87 | 156k | return ptr; |
88 | 156k | } |
89 | | |
90 | | void srtp_crypto_free(void *ptr) |
91 | 156k | { |
92 | 156k | debug_print(srtp_mod_alloc, "(location: %p) freed", ptr); |
93 | | |
94 | 156k | free(ptr); |
95 | 156k | } |
96 | | |
97 | | #else /* we need to define our own memory allocation routines */ |
98 | | |
99 | | #error no memory allocation defined yet |
100 | | |
101 | | #endif |