1/* 2 * Copyright (C) 2012 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#ifndef PlatformInstrumentation_h 32#define PlatformInstrumentation_h 33 34#include <wtf/MainThread.h> 35#include <wtf/text/WTFString.h> 36 37namespace WebCore { 38 39class PlatformInstrumentationClient { 40public: 41 virtual ~PlatformInstrumentationClient(); 42 43 virtual void willDecodeImage(const String& imageType) = 0; 44 virtual void didDecodeImage() = 0; 45 virtual void willResizeImage(bool shouldCache) = 0; 46 virtual void didResizeImage() = 0; 47}; 48 49class PlatformInstrumentation { 50public: 51 static const char ImageDecodeEvent[]; 52 static const char ImageResizeEvent[]; 53 54 static const char ImageTypeArgument[]; 55 static const char CachedArgument[]; 56 57 static void setClient(PlatformInstrumentationClient*); 58 static bool hasClient() { return m_client; } 59 60 static void willDecodeImage(const String& imageType); 61 static void didDecodeImage(); 62 static void willResizeImage(bool shouldCache); 63 static void didResizeImage(); 64 65private: 66 static const char CategoryName[]; 67 68 static PlatformInstrumentationClient* m_client; 69}; 70 71#define FAST_RETURN_IF_NO_CLIENT_OR_NOT_MAIN_THREAD() if (!m_client || !isMainThread()) return; 72 73inline void PlatformInstrumentation::willDecodeImage(const String& imageType) 74{ 75 FAST_RETURN_IF_NO_CLIENT_OR_NOT_MAIN_THREAD(); 76 m_client->willDecodeImage(imageType); 77} 78 79inline void PlatformInstrumentation::didDecodeImage() 80{ 81 FAST_RETURN_IF_NO_CLIENT_OR_NOT_MAIN_THREAD(); 82 m_client->didDecodeImage(); 83} 84 85inline void PlatformInstrumentation::willResizeImage(bool shouldCache) 86{ 87 FAST_RETURN_IF_NO_CLIENT_OR_NOT_MAIN_THREAD(); 88 m_client->willResizeImage(shouldCache); 89} 90 91inline void PlatformInstrumentation::didResizeImage() 92{ 93 FAST_RETURN_IF_NO_CLIENT_OR_NOT_MAIN_THREAD(); 94 m_client->didResizeImage(); 95} 96 97} // namespace WebCore 98 99#endif // PlatformInstrumentation_h 100