| /* |
| * Copyright (C) 2012 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. |
| * * 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 PlatformInstrumentation_h |
| #define PlatformInstrumentation_h |
| |
| #include "platform/TraceEvent.h" |
| #include "wtf/MainThread.h" |
| #include "wtf/text/WTFString.h" |
| |
| namespace WebCore { |
| |
| class PlatformInstrumentationClient { |
| public: |
| virtual ~PlatformInstrumentationClient(); |
| |
| virtual void willDecodeImage(const String& imageType) = 0; |
| virtual void didDecodeImage() = 0; |
| virtual void willResizeImage(bool shouldCache) = 0; |
| virtual void didResizeImage() = 0; |
| }; |
| |
| class PlatformInstrumentation { |
| public: |
| class LazyPixelRefTracker: TraceEvent::TraceScopedTrackableObject<void*> { |
| public: |
| LazyPixelRefTracker(void* instance) |
| : TraceScopedTrackableObject(CategoryName, LazyPixelRef, instance) |
| { |
| } |
| }; |
| |
| static const char ImageDecodeEvent[]; |
| static const char ImageResizeEvent[]; |
| static const char DrawLazyPixelRefEvent[]; |
| |
| static const char ImageTypeArgument[]; |
| static const char CachedArgument[]; |
| |
| static const char LazyPixelRef[]; |
| |
| static void setClient(PlatformInstrumentationClient*); |
| static bool hasClient() { return m_client; } |
| |
| static void willDecodeImage(const String& imageType); |
| static void didDecodeImage(); |
| static void willResizeImage(bool shouldCache); |
| static void didResizeImage(); |
| static void didDrawLazyPixelRef(unsigned long long lazyPixelRefId); |
| |
| private: |
| static const char CategoryName[]; |
| |
| static PlatformInstrumentationClient* m_client; |
| }; |
| |
| #define FAST_RETURN_IF_NO_CLIENT_OR_NOT_MAIN_THREAD() if (!m_client || !isMainThread()) return; |
| |
| inline void PlatformInstrumentation::willDecodeImage(const String& imageType) |
| { |
| TRACE_EVENT_BEGIN1(CategoryName, ImageDecodeEvent, ImageTypeArgument, TRACE_STR_COPY(imageType.ascii().data())); |
| FAST_RETURN_IF_NO_CLIENT_OR_NOT_MAIN_THREAD(); |
| m_client->willDecodeImage(imageType); |
| } |
| |
| inline void PlatformInstrumentation::didDecodeImage() |
| { |
| TRACE_EVENT_END0(CategoryName, ImageDecodeEvent); |
| FAST_RETURN_IF_NO_CLIENT_OR_NOT_MAIN_THREAD(); |
| m_client->didDecodeImage(); |
| } |
| |
| inline void PlatformInstrumentation::willResizeImage(bool shouldCache) |
| { |
| TRACE_EVENT_BEGIN1(CategoryName, ImageResizeEvent, CachedArgument, shouldCache); |
| FAST_RETURN_IF_NO_CLIENT_OR_NOT_MAIN_THREAD(); |
| m_client->willResizeImage(shouldCache); |
| } |
| |
| inline void PlatformInstrumentation::didResizeImage() |
| { |
| TRACE_EVENT_END0(CategoryName, ImageResizeEvent); |
| FAST_RETURN_IF_NO_CLIENT_OR_NOT_MAIN_THREAD(); |
| m_client->didResizeImage(); |
| } |
| |
| inline void PlatformInstrumentation::didDrawLazyPixelRef(unsigned long long lazyPixelRefId) |
| { |
| TRACE_EVENT_INSTANT1(CategoryName, DrawLazyPixelRefEvent, LazyPixelRef, lazyPixelRefId); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // PlatformInstrumentation_h |