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1 /* | |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | |
3 * Copyright (C) 2013 Samsung Electronics. All rights reserved. | |
4 * | |
5 * Redistribution and use in source and binary forms, with or without | |
6 * modification, are permitted provided that the following conditions are | |
7 * met: | |
8 * | |
9 * * Redistributions of source code must retain the above copyright | |
10 * notice, this list of conditions and the following disclaimer. | |
11 * * Redistributions in binary form must reproduce the above | |
12 * copyright notice, this list of conditions and the following disclaimer | |
13 * in the documentation and/or other materials provided with the | |
14 * distribution. | |
15 * * Neither the name of Google Inc. nor the names of its | |
16 * contributors may be used to endorse or promote products derived from | |
17 * this software without specific prior written permission. | |
18 * | |
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
30 */ | |
31 | |
32 #ifndef WTF_LeakAnnotations_h | |
33 #define WTF_LeakAnnotations_h | |
34 | |
35 /* This file defines macros which can be used to annotate intentional memory | |
36 * leaks. Support for annotations is implemented in HeapChecker and | |
37 * LeakSanitizer. Annotated objects will be treated as a source of live | |
38 * pointers, i.e. any heap objects reachable by following pointers from an | |
39 * annotated object will not be reported as leaks. | |
40 * | |
41 * ANNOTATE_SCOPED_MEMORY_LEAK: all allocations made in the current scope | |
42 * will be annotated as leaks. | |
43 * ANNOTATE_LEAKING_OBJECT_PTR(X): the heap object referenced by pointer X will | |
44 * be annotated as a leak. | |
45 * | |
46 * Note that HeapChecker will report a fatal error if an object which has been | |
47 * annotated with ANNOTATE_LEAKING_OBJECT_PTR is later deleted (but | |
48 * LeakSanitizer won't). | |
49 */ | |
50 | |
51 #if USE(LEAK_ANNOTATIONS) | |
52 | |
53 #if USE(LEAK_SANITIZER) | |
54 #ifdef __cplusplus | |
earthdok
2013/09/04 13:43:00
Isn't this always true? We have C++ code below any
| |
55 extern "C" { | |
56 #endif | |
57 void __lsan_disable(); | |
58 void __lsan_enable(); | |
59 void __lsan_ignore_object(const void *p); | |
60 #ifdef __cplusplus | |
61 } // extern "C" | |
62 #endif | |
63 | |
64 class WTFLeakSanitizerDisabler { | |
earthdok
2013/09/04 13:43:00
Disallow copy and assign.
| |
65 public: | |
66 WTFLeakSanitizerDisabler() | |
67 { | |
68 __lsan_disable(); | |
69 } | |
70 | |
71 ~WTFLeakSanitizerDisabler() | |
72 { | |
73 __lsan_enable(); | |
74 } | |
75 }; | |
76 | |
77 #define WTF_ANNOTATE_SCOPED_MEMORY_LEAK \ | |
78 WTFLeakSanitizerDisabler leakSanitizerDisabler; static_cast<void>(0) | |
79 | |
80 #define WTF_ANNOTATE_LEAKING_OBJECT_PTR(X) __lsan_ignore_object(X); | |
earthdok
2013/09/04 13:43:00
Nit: don't need the semicolon here.
| |
81 | |
82 #else // USE(LEAK_SANITIZER) | |
83 | |
84 // If Leak Sanitizer is not being used, the annotations should be no-ops. | |
85 #define WTF_ANNOTATE_SCOPED_MEMORY_LEAK ((void)0) | |
86 #define WTF_ANNOTATE_LEAKING_OBJECT_PTR(X) ((void)0) | |
87 | |
88 #endif // USE(LEAK_SANITIZER) | |
89 | |
90 #endif // USE(LEAK_ANNOTATIONS) | |
91 | |
92 #endif // WTF_LeakAnnotations_h | |
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