Index: components/browser_watcher/exit_funnel_win.h |
diff --git a/components/browser_watcher/exit_funnel_win.h b/components/browser_watcher/exit_funnel_win.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..6b490da04aba66eefd922c13d4ef3ed52dcb1471 |
--- /dev/null |
+++ b/components/browser_watcher/exit_funnel_win.h |
@@ -0,0 +1,50 @@ |
+// Copyright (c) 2014 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. |
+ |
+#ifndef COMPONENTS_BROWSER_WATCHER_EXIT_FUNNEL_WIN_H_ |
+#define COMPONENTS_BROWSER_WATCHER_EXIT_FUNNEL_WIN_H_ |
+ |
+#include "base/macros.h" |
+#include "base/process/process_handle.h" |
+#include "base/strings/string16.h" |
+#include "base/win/registry.h" |
+ |
+namespace browser_watcher { |
+ |
+// A wrapper class that takes care of persistently recording a trace of named, |
+// timed events in registry, associated with a process instance. This allows |
+// reconstructing and reporting an event trace on a subsequent launch. |
+// The event trace is stored in registry under a new key named |
+// <pid>-<uniquifier>, where each event is a value named after the event, with |
+// an associated QWORD value noting the event time. |
+class ExitFunnel { |
+ public: |
+ ExitFunnel(); |
+ ~ExitFunnel(); |
+ |
+ // Initializes the exit funnel with |registry_path| and |process|. |
+ // |process| must be open for PROCESS_QUERY_INFORMATION at least. |
+ // Returns false on failure to create or open the registry path corresponding |
+ // to |process|. |
+ bool Init(const base::char16* registry_path, base::ProcessHandle process); |
+ |
+ // Records |event_name| at the current time in the registry for the process |
+ // this instance is associated with. Returns false on failure to record the |
+ // event. |
+ bool RecordEvent(const base::char16* event_name); |
+ |
+ // Records |event_name| at the current time in the registry at |registry_path| |
+ // for this process. |
+ static bool RecordSingleEvent(const base::char16* registry_path, |
+ const base::char16* event_name); |
+ |
+ private: |
+ base::win::RegKey key_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(ExitFunnel); |
+}; |
+ |
+} // namespace browser_watcher |
+ |
+#endif // COMPONENTS_BROWSER_WATCHER_EXIT_FUNNEL_WIN_H_ |