| /* |
| * 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. |
| * * 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 EventTracer_h |
| #define EventTracer_h |
| |
| #include "platform/PlatformExport.h" |
| #include "wtf/Allocator.h" |
| #include "wtf/text/WTFString.h" |
| #include <memory> |
| #include <stdint.h> |
| |
| namespace base { |
| namespace trace_event { |
| class ConvertableToTraceFormat; |
| class TraceEventMemoryOverhead; |
| } |
| } |
| |
| // This will mark the trace event as disabled by default. The user will need |
| // to explicitly enable the event. |
| #define TRACE_DISABLED_BY_DEFAULT(name) "disabled-by-default-" name |
| |
| namespace blink { |
| |
| class TracedValue; |
| |
| namespace TraceEvent { |
| typedef uint64_t TraceEventHandle; |
| typedef intptr_t TraceEventAPIAtomicWord; |
| } // namespace TraceEvent |
| |
| // FIXME: Make these global variables thread-safe. Make a value update atomic. |
| PLATFORM_EXPORT extern TraceEvent::TraceEventAPIAtomicWord* traceSamplingState[3]; |
| |
| class PLATFORM_EXPORT EventTracer { |
| STATIC_ONLY(EventTracer); |
| public: |
| static void initialize(); |
| static const unsigned char* getTraceCategoryEnabledFlag(const char*); |
| static TraceEvent::TraceEventHandle addTraceEvent(char phase, |
| const unsigned char* categoryEnabledFlag, |
| const char* name, |
| const char* scope, |
| unsigned long long id, |
| unsigned long long bindId, |
| double timestamp, |
| int numArgs, |
| const char* argNames[], |
| const unsigned char argTypes[], |
| const unsigned long long argValues[], |
| std::unique_ptr<TracedValue>, |
| std::unique_ptr<TracedValue>, |
| unsigned flags); |
| static TraceEvent::TraceEventHandle addTraceEvent(char phase, |
| const unsigned char* categoryEnabledFlag, |
| const char* name, |
| const char* scope, |
| unsigned long long id, |
| unsigned long long bindId, |
| double timestamp, |
| int numArgs, |
| const char* argNames[], |
| const unsigned char argTypes[], |
| const unsigned long long argValues[], |
| unsigned flags); |
| static void updateTraceEventDuration(const unsigned char* categoryEnabledFlag, const char* name, TraceEvent::TraceEventHandle); |
| static double systemTraceTime(); |
| |
| private: |
| static TraceEvent::TraceEventHandle addTraceEvent(char phase, |
| const unsigned char* categoryEnabledFlag, |
| const char* name, |
| const char* scope, |
| unsigned long long id, |
| unsigned long long bindId, |
| double timestamp, |
| int numArgs, |
| const char* argNames[], |
| const unsigned char argTypes[], |
| const unsigned long long argValues[], |
| std::unique_ptr<base::trace_event::ConvertableToTraceFormat>* convertables, |
| unsigned flags); |
| }; |
| |
| } // namespace blink |
| |
| #endif // EventTracer_h |