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comparison: security/sandbox/chromium/base/debug/leak_annotations.h
security/sandbox/chromium/base/debug/leak_annotations.h
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
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| -1:000000000000 | 0:e4e168864a10 |
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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef BASE_DEBUG_LEAK_ANNOTATIONS_H_ | |
| 6 #define BASE_DEBUG_LEAK_ANNOTATIONS_H_ | |
| 7 | |
| 8 #include "build/build_config.h" | |
| 9 | |
| 10 // This file defines macros which can be used to annotate intentional memory | |
| 11 // leaks. Support for annotations is implemented in HeapChecker and | |
| 12 // LeakSanitizer. Annotated objects will be treated as a source of live | |
| 13 // pointers, i.e. any heap objects reachable by following pointers from an | |
| 14 // annotated object will not be reported as leaks. | |
| 15 // | |
| 16 // ANNOTATE_SCOPED_MEMORY_LEAK: all allocations made in the current scope | |
| 17 // will be annotated as leaks. | |
| 18 // ANNOTATE_LEAKING_OBJECT_PTR(X): the heap object referenced by pointer X will | |
| 19 // be annotated as a leak. | |
| 20 // | |
| 21 // Note that HeapChecker will report a fatal error if an object which has been | |
| 22 // annotated with ANNOTATE_LEAKING_OBJECT_PTR is later deleted (but | |
| 23 // LeakSanitizer won't). | |
| 24 | |
| 25 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_NACL) && \ | |
| 26 defined(USE_HEAPCHECKER) | |
| 27 | |
| 28 #include "third_party/tcmalloc/chromium/src/gperftools/heap-checker.h" | |
| 29 | |
| 30 #define ANNOTATE_SCOPED_MEMORY_LEAK \ | |
| 31 HeapLeakChecker::Disabler heap_leak_checker_disabler; static_cast<void>(0) | |
| 32 | |
| 33 #define ANNOTATE_LEAKING_OBJECT_PTR(X) \ | |
| 34 HeapLeakChecker::IgnoreObject(X) | |
| 35 | |
| 36 #elif defined(LEAK_SANITIZER) && !defined(OS_NACL) | |
| 37 | |
| 38 extern "C" { | |
| 39 void __lsan_disable(); | |
| 40 void __lsan_enable(); | |
| 41 void __lsan_ignore_object(const void *p); | |
| 42 } // extern "C" | |
| 43 | |
| 44 class ScopedLeakSanitizerDisabler { | |
| 45 public: | |
| 46 ScopedLeakSanitizerDisabler() { __lsan_disable(); } | |
| 47 ~ScopedLeakSanitizerDisabler() { __lsan_enable(); } | |
| 48 private: | |
| 49 DISALLOW_COPY_AND_ASSIGN(ScopedLeakSanitizerDisabler); | |
| 50 }; | |
| 51 | |
| 52 #define ANNOTATE_SCOPED_MEMORY_LEAK \ | |
| 53 ScopedLeakSanitizerDisabler leak_sanitizer_disabler; static_cast<void>(0) | |
| 54 | |
| 55 #define ANNOTATE_LEAKING_OBJECT_PTR(X) __lsan_ignore_object(X); | |
| 56 | |
| 57 #else | |
| 58 | |
| 59 // If neither HeapChecker nor LSan are used, the annotations should be no-ops. | |
| 60 #define ANNOTATE_SCOPED_MEMORY_LEAK ((void)0) | |
| 61 #define ANNOTATE_LEAKING_OBJECT_PTR(X) ((void)0) | |
| 62 | |
| 63 #endif | |
| 64 | |
| 65 #endif // BASE_DEBUG_LEAK_ANNOTATIONS_H_ |
