android_webview/common/devtools_instrumentation.h

   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/trace_event/trace_event.h"
   9
  10 namespace android_webview {
  11 namespace devtools_instrumentation {
  12
  13 namespace internal {
  14 const char kCategory[] = "Java,devtools,disabled-by-default-devtools.timeline";
  15 const char kEmbedderCallback[] = "EmbedderCallback";
  16 const char kCallbackNameArgument[] = "callbackName";
  17 }  // namespace internal
  18
  19 class ScopedEmbedderCallbackTask {
  20  public:
  21   ScopedEmbedderCallbackTask(const char* callback_name) {
  22     TRACE_EVENT_BEGIN1(internal::kCategory,
  23                        internal::kEmbedderCallback,
  24                        internal::kCallbackNameArgument,
  25                        callback_name);
  26   }
  27   ~ScopedEmbedderCallbackTask() {
  28     TRACE_EVENT_END0(internal::kCategory,
  29                      internal::kEmbedderCallback);
  30   }
  31
  32  private:
  33   DISALLOW_COPY_AND_ASSIGN(ScopedEmbedderCallbackTask);
  34 };
  35
  36 }  // namespace devtools_instrumentation
  37 }  // namespace android_webview
  38
  39 #endif  // ANDROID_WEBVIEW_COMMON_DEVTOOLS_INSTRUMENTATION_H_