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comparison: gfx/skia/trunk/include/utils/SkEventTracer.h
gfx/skia/trunk/include/utils/SkEventTracer.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:07be4227cfb3 |
|---|---|
| 1 /* | |
| 2 * Copyright (C) 2014 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #ifndef SkEventTracer_DEFINED | |
| 9 #define SkEventTracer_DEFINED | |
| 10 | |
| 11 // The class in this header defines the interface between Skia's internal | |
| 12 // tracing macros and an external entity (e.g., Chrome) that will consume them. | |
| 13 // Such an entity should subclass SkEventTracer and provide an instance of | |
| 14 // that event to SkEventTracer::SetInstance. | |
| 15 | |
| 16 // If you're looking for the tracing macros to instrument Skia itself, those | |
| 17 // live in src/core/SkTraceEvent.h | |
| 18 | |
| 19 #include "SkTypes.h" | |
| 20 | |
| 21 // This will mark the trace event as disabled by default. The user will need | |
| 22 // to explicitly enable the event. | |
| 23 #define TRACE_DISABLED_BY_DEFAULT(name) "disabled-by-default-" name | |
| 24 | |
| 25 class SK_API SkEventTracer { | |
| 26 public: | |
| 27 | |
| 28 typedef uint64_t Handle; | |
| 29 | |
| 30 static SkEventTracer* GetInstance(); | |
| 31 | |
| 32 static void SetInstance(SkEventTracer* tracer) { | |
| 33 SkDELETE(SkEventTracer::gInstance); | |
| 34 SkEventTracer::gInstance = tracer; | |
| 35 } | |
| 36 | |
| 37 virtual ~SkEventTracer() { } | |
| 38 | |
| 39 // The pointer returned from GetCategoryGroupEnabled() points to a | |
| 40 // value with zero or more of the following bits. Used in this class only. | |
| 41 // The TRACE_EVENT macros should only use the value as a bool. | |
| 42 // These values must be in sync with macro values in trace_event.h in chromium. | |
| 43 enum CategoryGroupEnabledFlags { | |
| 44 // Category group enabled for the recording mode. | |
| 45 kEnabledForRecording_CategoryGroupEnabledFlags = 1 << 0, | |
| 46 // Category group enabled for the monitoring mode. | |
| 47 kEnabledForMonitoring_CategoryGroupEnabledFlags = 1 << 1, | |
| 48 // Category group enabled by SetEventCallbackEnabled(). | |
| 49 kEnabledForEventCallback_CategoryGroupEnabledFlags = 1 << 2, | |
| 50 }; | |
| 51 | |
| 52 virtual const uint8_t* getCategoryGroupEnabled(const char* name) = 0; | |
| 53 virtual const char* getCategoryGroupName( | |
| 54 const uint8_t* categoryEnabledFlag) = 0; | |
| 55 | |
| 56 virtual SkEventTracer::Handle | |
| 57 addTraceEvent(char phase, | |
| 58 const uint8_t* categoryEnabledFlag, | |
| 59 const char* name, | |
| 60 uint64_t id, | |
| 61 int32_t numArgs, | |
| 62 const char** argNames, | |
| 63 const uint8_t* argTypes, | |
| 64 const uint64_t* argValues, | |
| 65 uint8_t flags) = 0; | |
| 66 | |
| 67 virtual void | |
| 68 updateTraceEventDuration(const uint8_t* categoryEnabledFlag, | |
| 69 const char* name, | |
| 70 SkEventTracer::Handle handle) = 0; | |
| 71 private: | |
| 72 static SkEventTracer *gInstance; | |
| 73 }; | |
| 74 | |
| 75 #endif // SkEventTracer_DEFINED |
