66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_DEBUG_LEAK_ANNOTATIONS_H_
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#define BASE_DEBUG_LEAK_ANNOTATIONS_H_
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#include "build/build_config.h"
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// This file defines macros which can be used to annotate intentional memory
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// leaks. Support for annotations is implemented in HeapChecker and
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// LeakSanitizer. Annotated objects will be treated as a source of live
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// pointers, i.e. any heap objects reachable by following pointers from an
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// annotated object will not be reported as leaks.
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//
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// ANNOTATE_SCOPED_MEMORY_LEAK: all allocations made in the current scope
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// will be annotated as leaks.
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// ANNOTATE_LEAKING_OBJECT_PTR(X): the heap object referenced by pointer X will
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// be annotated as a leak.
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//
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// Note that HeapChecker will report a fatal error if an object which has been
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// annotated with ANNOTATE_LEAKING_OBJECT_PTR is later deleted (but
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// LeakSanitizer won't).
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#if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_NACL) && \
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defined(USE_HEAPCHECKER)
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#include "third_party/tcmalloc/chromium/src/gperftools/heap-checker.h"
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#define ANNOTATE_SCOPED_MEMORY_LEAK \
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HeapLeakChecker::Disabler heap_leak_checker_disabler; static_cast<void>(0)
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#define ANNOTATE_LEAKING_OBJECT_PTR(X) \
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HeapLeakChecker::IgnoreObject(X)
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#elif defined(LEAK_SANITIZER) && !defined(OS_NACL)
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extern "C" {
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void __lsan_disable();
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void __lsan_enable();
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void __lsan_ignore_object(const void *p);
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} // extern "C"
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class ScopedLeakSanitizerDisabler {
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public:
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ScopedLeakSanitizerDisabler() { __lsan_disable(); }
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~ScopedLeakSanitizerDisabler() { __lsan_enable(); }
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private:
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DISALLOW_COPY_AND_ASSIGN(ScopedLeakSanitizerDisabler);
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};
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#define ANNOTATE_SCOPED_MEMORY_LEAK \
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ScopedLeakSanitizerDisabler leak_sanitizer_disabler; static_cast<void>(0)
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#define ANNOTATE_LEAKING_OBJECT_PTR(X) __lsan_ignore_object(X);
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#else
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// If neither HeapChecker nor LSan are used, the annotations should be no-ops.
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#define ANNOTATE_SCOPED_MEMORY_LEAK ((void)0)
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#define ANNOTATE_LEAKING_OBJECT_PTR(X) ((void)0)
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#endif
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#endif // BASE_DEBUG_LEAK_ANNOTATIONS_H_
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