/* * Copyright (C) 2013 Google Inc. All rights reserved. * Copyright (C) 2013 Samsung Electronics. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_LEAK_ANNOTATIONS_H_ #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_LEAK_ANNOTATIONS_H_ // This file defines macros for working with LeakSanitizer, allowing memory // and allocations to be registered as exempted from LSan consideration. #if defined(LEAK_SANITIZER) #include "third_party/blink/renderer/platform/wtf/sanitizers.h" #include "third_party/blink/renderer/platform/wtf/type_traits.h" #endif namespace WTF { #if defined(LEAK_SANITIZER) class LeakSanitizerDisabler { public: LeakSanitizerDisabler() { __lsan_disable(); } LeakSanitizerDisabler(const LeakSanitizerDisabler&) = delete; LeakSanitizerDisabler& operator=(const LeakSanitizerDisabler&) = delete; ~LeakSanitizerDisabler() { __lsan_enable(); } }; // WTF_INTERNAL_LEAK_SANITIZER_DISABLED_SCOPE: all allocations made in the // current scope will be exempted from LSan consideration. Only to be // used internal to wtf/, Blink should use LEAK_SANITIZER_DISABLED_SCOPE // elsewhere. // // TODO(sof): once layering rules allow wtf/ to make use of the Oilpan // infrastructure, remove this macro. #define WTF_INTERNAL_LEAK_SANITIZER_DISABLED_SCOPE … // LEAK_SANITIZER_IGNORE_OBJECT(X): the heap object referenced by pointer X // will be ignored by LSan. // // "Ignorance" means that LSan's reachability traversal is stopped short // upon encountering an ignored memory chunk. Consequently, LSan will not // scan an ignored memory chunk for live, reachable pointers. However, should // those embedded pointers be reachable by some other path, they will be // reported as leaking. #define LEAK_SANITIZER_IGNORE_OBJECT … #else #define WTF_INTERNAL_LEAK_SANITIZER_DISABLED_SCOPE #define LEAK_SANITIZER_IGNORE_OBJECT(X) … #endif // defined(LEAK_SANITIZER) } // namespace WTF #endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_LEAK_ANNOTATIONS_H_