Index: Source/WTF/wtf/DynamicAnnotations.h |
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-/* |
- * Copyright (C) 2011 Google Inc. 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. |
- * * 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 WTF_DynamicAnnotations_h |
-#define WTF_DynamicAnnotations_h |
- |
-/* This file defines dynamic annotations for use with dynamic analysis |
- * tool such as ThreadSanitizer, Valgrind, etc. |
- * |
- * Dynamic annotation is a source code annotation that affects |
- * the generated code (that is, the annotation is not a comment). |
- * Each such annotation is attached to a particular |
- * instruction and/or to a particular object (address) in the program. |
- * |
- * By using dynamic annotations a developer can give more details to the dynamic |
- * analysis tool to improve its precision. |
- * |
- * In C/C++ program the annotations are represented as C macros. |
- * With the default build flags, these macros are empty, hence don't affect |
- * performance of a compiled binary. |
- * If dynamic annotations are enabled, they just call no-op functions. |
- * The dynamic analysis tools can intercept these functions and replace them |
- * with their own implementations. |
- * |
- * See http://code.google.com/p/data-race-test/wiki/DynamicAnnotations for more information. |
- */ |
- |
-#if USE(DYNAMIC_ANNOTATIONS) |
-/* Tell data race detector that we're not interested in reports on the given address range. */ |
-#define WTF_ANNOTATE_BENIGN_RACE_SIZED(address, size, description) WTFAnnotateBenignRaceSized(__FILE__, __LINE__, address, size, description) |
-#define WTF_ANNOTATE_BENIGN_RACE(pointer, description) WTFAnnotateBenignRaceSized(__FILE__, __LINE__, pointer, sizeof(*(pointer)), description) |
- |
-/* Annotations for user-defined synchronization mechanisms. |
- * These annotations can be used to define happens-before arcs in user-defined |
- * synchronization mechanisms: the race detector will infer an arc from |
- * the former to the latter when they share the same argument pointer. |
- * |
- * The most common case requiring annotations is atomic reference counting: |
- * bool deref() { |
- * ANNOTATE_HAPPENS_BEFORE(&m_refCount); |
- * if (!atomicDecrement(&m_refCount)) { |
- * // m_refCount is now 0 |
- * ANNOTATE_HAPPENS_AFTER(&m_refCount); |
- * // "return true; happens-after each atomicDecrement of m_refCount" |
- * return true; |
- * } |
- * return false; |
- * } |
- */ |
-#define WTF_ANNOTATE_HAPPENS_BEFORE(address) WTFAnnotateHappensBefore(__FILE__, __LINE__, address) |
-#define WTF_ANNOTATE_HAPPENS_AFTER(address) WTFAnnotateHappensAfter(__FILE__, __LINE__, address) |
- |
-#ifdef __cplusplus |
-extern "C" { |
-#endif |
-/* Don't use these directly, use the above macros instead. */ |
-void WTFAnnotateBenignRaceSized(const char* file, int line, const volatile void* memory, long size, const char* description); |
-void WTFAnnotateHappensBefore(const char* file, int line, const volatile void* address); |
-void WTFAnnotateHappensAfter(const char* file, int line, const volatile void* address); |
-#ifdef __cplusplus |
-} // extern "C" |
-#endif |
- |
-#else // USE(DYNAMIC_ANNOTATIONS) |
-/* These macros are empty when dynamic annotations are not enabled so you can |
- * use them without affecting the performance of release binaries. */ |
-#define WTF_ANNOTATE_BENIGN_RACE_SIZED(address, size, description) |
-#define WTF_ANNOTATE_BENIGN_RACE(pointer, description) |
-#define WTF_ANNOTATE_HAPPENS_BEFORE(address) |
-#define WTF_ANNOTATE_HAPPENS_AFTER(address) |
-#endif // USE(DYNAMIC_ANNOTATIONS) |
- |
-#endif // WTF_DynamicAnnotations_h |