1 // Copyright 2014 The Chromium 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 ANDROID_WEBVIEW_COMMON_DEVTOOLS_INSTRUMENTATION_H_ 6 #define ANDROID_WEBVIEW_COMMON_DEVTOOLS_INSTRUMENTATION_H_ 7 8 #include "base/macros.h" 9 #include "base/trace_event/trace_event.h" 10 11 namespace android_webview { 12 namespace devtools_instrumentation { 13 14 namespace internal { Category()15constexpr const char* Category() { 16 // Declared as a constexpr function to have an external linkage and to be 17 // known at compile-time. 18 return "Java,devtools,disabled-by-default-devtools.timeline"; 19 } 20 const char kEmbedderCallback[] = "EmbedderCallback"; 21 const char kCallbackNameArgument[] = "callbackName"; 22 } // namespace internal 23 24 class ScopedEmbedderCallbackTask { 25 public: ScopedEmbedderCallbackTask(const char * callback_name)26 explicit ScopedEmbedderCallbackTask(const char* callback_name) { 27 TRACE_EVENT_BEGIN1(internal::Category(), internal::kEmbedderCallback, 28 internal::kCallbackNameArgument, callback_name); 29 } ~ScopedEmbedderCallbackTask()30 ~ScopedEmbedderCallbackTask() { 31 TRACE_EVENT_END0(internal::Category(), internal::kEmbedderCallback); 32 } 33 34 private: 35 DISALLOW_COPY_AND_ASSIGN(ScopedEmbedderCallbackTask); 36 }; 37 38 } // namespace devtools_instrumentation 39 } // namespace android_webview 40 41 #endif // ANDROID_WEBVIEW_COMMON_DEVTOOLS_INSTRUMENTATION_H_ 42