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| 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 #ifndef EventTracer_h | |
| 32 #define EventTracer_h | |
| 33 | |
| 34 #include "platform/PlatformExport.h" | |
| 35 #include "wtf/Allocator.h" | |
| 36 #include "wtf/text/WTFString.h" | |
| 37 #include <memory> | |
| 38 #include <stdint.h> | |
| 39 | |
| 40 namespace base { | |
| 41 namespace trace_event { | |
| 42 class ConvertableToTraceFormat; | |
| 43 class TraceEventMemoryOverhead; | |
| 44 } | |
| 45 } | |
| 46 | |
| 47 // This will mark the trace event as disabled by default. The user will need | |
| 48 // to explicitly enable the event. | |
| 49 #define TRACE_DISABLED_BY_DEFAULT(name) "disabled-by-default-" name | |
| 50 | |
| 51 namespace blink { | |
| 52 | |
| 53 class TracedValue; | |
| 54 | |
| 55 namespace TraceEvent { | |
| 56 typedef uint64_t TraceEventHandle; | |
| 57 typedef intptr_t TraceEventAPIAtomicWord; | |
| 58 } // namespace TraceEvent | |
| 59 | |
| 60 // FIXME: Make these global variables thread-safe. Make a value update atomic. | |
| 61 PLATFORM_EXPORT extern TraceEvent::TraceEventAPIAtomicWord* traceSamplingState[3
]; | |
| 62 | |
| 63 class PLATFORM_EXPORT EventTracer { | |
| 64 STATIC_ONLY(EventTracer); | |
| 65 public: | |
| 66 static void initialize(); | |
| 67 static const unsigned char* getTraceCategoryEnabledFlag(const char*); | |
| 68 static TraceEvent::TraceEventHandle addTraceEvent(char phase, | |
| 69 const unsigned char* categoryEnabledFlag, | |
| 70 const char* name, | |
| 71 const char* scope, | |
| 72 unsigned long long id, | |
| 73 unsigned long long bindId, | |
| 74 double timestamp, | |
| 75 int numArgs, | |
| 76 const char* argNames[], | |
| 77 const unsigned char argTypes[], | |
| 78 const unsigned long long argValues[], | |
| 79 std::unique_ptr<TracedValue>, | |
| 80 std::unique_ptr<TracedValue>, | |
| 81 unsigned flags); | |
| 82 static TraceEvent::TraceEventHandle addTraceEvent(char phase, | |
| 83 const unsigned char* categoryEnabledFlag, | |
| 84 const char* name, | |
| 85 const char* scope, | |
| 86 unsigned long long id, | |
| 87 unsigned long long bindId, | |
| 88 double timestamp, | |
| 89 int numArgs, | |
| 90 const char* argNames[], | |
| 91 const unsigned char argTypes[], | |
| 92 const unsigned long long argValues[], | |
| 93 unsigned flags); | |
| 94 static void updateTraceEventDuration(const unsigned char* categoryEnabledFla
g, const char* name, TraceEvent::TraceEventHandle); | |
| 95 static double systemTraceTime(); | |
| 96 | |
| 97 private: | |
| 98 static TraceEvent::TraceEventHandle addTraceEvent(char phase, | |
| 99 const unsigned char* categoryEnabledFlag, | |
| 100 const char* name, | |
| 101 const char* scope, | |
| 102 unsigned long long id, | |
| 103 unsigned long long bindId, | |
| 104 double timestamp, | |
| 105 int numArgs, | |
| 106 const char* argNames[], | |
| 107 const unsigned char argTypes[], | |
| 108 const unsigned long long argValues[], | |
| 109 std::unique_ptr<base::trace_event::ConvertableToTraceFormat>* convertabl
es, | |
| 110 unsigned flags); | |
| 111 }; | |
| 112 | |
| 113 } // namespace blink | |
| 114 | |
| 115 #endif // EventTracer_h | |
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Chromium Code Reviews
Issue 2341333003:
Use chromium trace_event implementation in blink (Closed)
