1 // Copyright 2016 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_TRACING_TRACING_CATEGORY_OBSERVER_H_ 6 #define V8_TRACING_TRACING_CATEGORY_OBSERVER_H_ 7 8 #include "include/v8-platform.h" 9 10 namespace v8 { 11 namespace tracing { 12 13 class TracingCategoryObserver : public TracingController::TraceStateObserver { 14 public: 15 enum Mode { 16 ENABLED_BY_NATIVE = 1 << 0, 17 ENABLED_BY_TRACING = 1 << 1, 18 ENABLED_BY_SAMPLING = 1 << 2, 19 }; 20 21 static void SetUp(); 22 static void TearDown(); 23 24 // v8::TracingController::TraceStateObserver 25 void OnTraceEnabled() final; 26 void OnTraceDisabled() final; 27 28 private: 29 static TracingCategoryObserver* instance_; 30 }; 31 32 } // namespace tracing 33 } // namespace v8 34 35 #endif // V8_TRACING_TRACING_CATEGORY_OBSERVER_H_ 36
