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Issue 23901002: [blink]: Annotate StringImpl::createStatic leak for LeakSanitizer. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Created 7 years, 3 months ago
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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 */
abarth-chromium 2013/09/04 17:34:15 We typically use //-style comments (except for the
50
51 #if USE(LEAK_ANNOTATIONS)
52
53 #include "wtf/Noncopyable.h"
54
55 #if USE(LEAK_SANITIZER)
56 #ifdef __cplusplus
abarth-chromium 2013/09/04 17:34:15 We generally assume C++ for WTF headers.
57 extern "C" {
58 #endif
59 void __lsan_disable();
60 void __lsan_enable();
61 void __lsan_ignore_object(const void *p);
62 #ifdef __cplusplus
63 } // extern "C"
64 #endif
65
66 class WTFLeakSanitizerDisabler {
abarth-chromium 2013/09/04 17:34:15 Rather than putting WTF into the name of this clas
67 WTF_MAKE_NONCOPYABLE(WTFLeakSanitizerDisabler);
68 public:
69 WTFLeakSanitizerDisabler()
70 {
71 __lsan_disable();
72 }
73
74 ~WTFLeakSanitizerDisabler()
75 {
76 __lsan_enable();
77 }
78 };
79
80 #define WTF_ANNOTATE_SCOPED_MEMORY_LEAK \
81 WTFLeakSanitizerDisabler leakSanitizerDisabler; static_cast<void>(0)
82
83 #define WTF_ANNOTATE_LEAKING_OBJECT_PTR(X) \
84 __lsan_ignore_object(X)
85
86 #else // USE(LEAK_SANITIZER)
87
88 // If Leak Sanitizer is not being used, the annotations should be no-ops.
89 #define WTF_ANNOTATE_SCOPED_MEMORY_LEAK
90 #define WTF_ANNOTATE_LEAKING_OBJECT_PTR(X)
91
92 #endif // USE(LEAK_SANITIZER)
93
94 #endif // USE(LEAK_ANNOTATIONS)
95
96 #endif // WTF_LeakAnnotations_h
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