Index: base/trace_event/persistent_async_event.cc |
diff --git a/base/trace_event/persistent_async_event.cc b/base/trace_event/persistent_async_event.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..70b6eb394c5847e0362172340245432333e3fa24 |
--- /dev/null |
+++ b/base/trace_event/persistent_async_event.cc |
@@ -0,0 +1,49 @@ |
+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "base/trace_event/persistent_async_event.h" |
+ |
+#include "base/macros.h" |
+#include "base/time/time.h" |
+#include "base/trace_event/trace_event.h" |
+ |
+namespace base { |
+ |
+namespace trace_event { |
+ |
+PersistentAsyncEvent::PersistentAsyncEvent() : active_(false) { |
+ id_ = static_cast<void*>(this); |
+ base::trace_event::TraceLog::GetInstance()->AddEnabledStateObserver(this); |
+} |
+ |
+PersistentAsyncEvent::~PersistentAsyncEvent() { |
+ base::trace_event::TraceLog::GetInstance()->RemoveEnabledStateObserver(this); |
+} |
+ |
+void PersistentAsyncEvent::Start() { |
+ RecordStartEvent(); |
+ active_ = true; |
+ start_time_ = base::TimeTicks::Now().ToInternalValue(); |
+} |
+ |
+void PersistentAsyncEvent::Stop() { |
+ RecordStopEvent(); |
+ active_ = false; |
+} |
+ |
+void PersistentAsyncEvent::OnTraceLogEnabled() { |
+ if (active_) { |
charliea (OOO until 10-5)
2016/08/31 17:30:38
Looks like it's okay to leave off the brace for on
alexandermont
2016/08/31 18:31:59
Done
|
+ RecordStartEventWithTimestamp(start_time_); |
+ } |
+} |
+ |
+void PersistentAsyncEvent::OnTraceLogDisabled() { |
+ // TODO(alexandermont): How do we call RecordStopEvent before log disabled? |
+ if (active_) { |
+ RecordStopEvent(); |
+ } |
+} |
+ |
+} // namespace trace_event |
+} // namespace base |