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32 #include "platform/EventTracer.h"
34 #include "public/platform/Platform.h"
35 #include "public/platform/WebConvertableToTraceFormat.h"
36 #include "wtf/Assertions.h"
41 COMPILE_ASSERT(sizeof(Platform::TraceEventHandle) == sizeof(TraceEvent::TraceEventHandle), TraceEventHandle_types_must_be_compatible);
43 // The dummy variable is needed to avoid a crash when someone updates the state variables
44 // before EventTracer::initialize() is called.
45 long dummyTraceSamplingState = 0;
46 long* traceSamplingState[3] = {&dummyTraceSamplingState, &dummyTraceSamplingState, &dummyTraceSamplingState };
48 void EventTracer::initialize()
50 // current() might not exist in unit tests.
51 if (!Platform::current())
54 traceSamplingState[0] = 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] = Platform::current()->getTraceSamplingState(1);
59 if (!traceSamplingState[1])
60 traceSamplingState[1] = &dummyTraceSamplingState;
61 traceSamplingState[2] = Platform::current()->getTraceSamplingState(2);
62 if (!traceSamplingState[2])
63 traceSamplingState[2] = &dummyTraceSamplingState;
66 const unsigned char* EventTracer::getTraceCategoryEnabledFlag(const char* categoryName)
68 static const char* dummyCategoryEnabledFlag = "*";
69 // current() might not exist in unit tests.
70 if (!Platform::current())
71 return reinterpret_cast<const unsigned char*>(dummyCategoryEnabledFlag);
73 return Platform::current()->getTraceCategoryEnabledFlag(categoryName);
76 TraceEvent::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[],
82 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] = WebConvertableToTraceFormat(convertableValues[i]);
91 return Platform::current()->addTraceEvent(phase, categoryEnabledFlag, name, id, numArgs, argNames, argTypes, argValues, webConvertableValues, flags);
94 TraceEvent::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,
99 return Platform::current()->addTraceEvent(phase, categoryEnabledFlag, name, id, numArgs, argNames, argTypes, argValues, 0, flags);
102 void EventTracer::updateTraceEventDuration(const unsigned char* categoryEnabledFlag, const char* name, TraceEvent::TraceEventHandle handle)
104 Platform::current()->updateTraceEventDuration(categoryEnabledFlag, name, handle);