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/*
* 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 \
WTF::LeakSanitizerDisabler leakSanitizerDisabler; \
static_cast<void>(0)
// 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(X) __lsan_ignore_object(X)
#else
#define WTF_INTERNAL_LEAK_SANITIZER_DISABLED_SCOPE
#define LEAK_SANITIZER_IGNORE_OBJECT(X) ((void)0)
#endif // defined(LEAK_SANITIZER)
} // namespace WTF
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_LEAK_ANNOTATIONS_H_
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