1/* 2 * Copyright (C) 2011 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#include "config.h" 32#include "platform/EventTracer.h" 33 34#include "public/platform/Platform.h" 35#include "public/platform/WebConvertableToTraceFormat.h" 36#include "wtf/Assertions.h" 37#include <stdio.h> 38 39namespace blink { 40 41COMPILE_ASSERT(sizeof(blink::Platform::TraceEventHandle) == sizeof(TraceEvent::TraceEventHandle), TraceEventHandle_types_must_be_compatible); 42 43// The dummy variable is needed to avoid a crash when someone updates the state variables 44// before EventTracer::initialize() is called. 45long dummyTraceSamplingState = 0; 46long* traceSamplingState[3] = {&dummyTraceSamplingState, &dummyTraceSamplingState, &dummyTraceSamplingState }; 47 48void EventTracer::initialize() 49{ 50 // current() might not exist in unit tests. 51 if (!blink::Platform::current()) 52 return; 53 54 traceSamplingState[0] = blink::Platform::current()->getTraceSamplingState(0); 55 // FIXME: traceSamplingState[0] can be 0 in split-dll build. http://crbug.com/256965 56 if (!traceSamplingState[0]) 57 traceSamplingState[0] = &dummyTraceSamplingState; 58 traceSamplingState[1] = blink::Platform::current()->getTraceSamplingState(1); 59 if (!traceSamplingState[1]) 60 traceSamplingState[1] = &dummyTraceSamplingState; 61 traceSamplingState[2] = blink::Platform::current()->getTraceSamplingState(2); 62 if (!traceSamplingState[2]) 63 traceSamplingState[2] = &dummyTraceSamplingState; 64} 65 66const unsigned char* EventTracer::getTraceCategoryEnabledFlag(const char* categoryName) 67{ 68 static const char* dummyCategoryEnabledFlag = "*"; 69 // current() might not exist in unit tests. 70 if (!blink::Platform::current()) 71 return reinterpret_cast<const unsigned char*>(dummyCategoryEnabledFlag); 72 73 return blink::Platform::current()->getTraceCategoryEnabledFlag(categoryName); 74} 75 76TraceEvent::TraceEventHandle EventTracer::addTraceEvent(char phase, const unsigned char* categoryEnabledFlag, 77 const char* name, unsigned long long id, int numArgs, const char* argNames[], 78 const unsigned char argTypes[], const unsigned long long argValues[], 79 TraceEvent::ConvertableToTraceFormat* convertableValues[], 80 unsigned char flags) 81{ 82 blink::WebConvertableToTraceFormat webConvertableValues[2]; 83 if (numArgs <= static_cast<int>(WTF_ARRAY_LENGTH(webConvertableValues))) { 84 for (int i = 0; i < numArgs; ++i) { 85 if (convertableValues[i]) 86 webConvertableValues[i] = blink::WebConvertableToTraceFormat(convertableValues[i]); 87 } 88 } else { 89 ASSERT_NOT_REACHED(); 90 } 91 return blink::Platform::current()->addTraceEvent(phase, categoryEnabledFlag, name, id, numArgs, argNames, argTypes, argValues, webConvertableValues, flags); 92} 93 94TraceEvent::TraceEventHandle EventTracer::addTraceEvent(char phase, const unsigned char* categoryEnabledFlag, 95 const char* name, unsigned long long id, int numArgs, const char** argNames, 96 const unsigned char* argTypes, const unsigned long long* argValues, 97 unsigned char flags) 98{ 99 return blink::Platform::current()->addTraceEvent(phase, categoryEnabledFlag, name, id, numArgs, argNames, argTypes, argValues, 0, flags); 100} 101 102void EventTracer::updateTraceEventDuration(const unsigned char* categoryEnabledFlag, const char* name, TraceEvent::TraceEventHandle handle) 103{ 104 blink::Platform::current()->updateTraceEventDuration(categoryEnabledFlag, name, handle); 105} 106 107} // namespace blink 108