Adjust interfaces to indicate when tracking is in progress

base/tracked_objects.h

 // Copyright (c) 2011 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 BASE_TRACKED_OBJECTS_H_
 #define BASE_TRACKED_OBJECTS_H_
 #pragma once
 
 #include <map>
 #include <stack>
@@ skipping 644 matching lines @@
   // Initializes all statics if needed (this initialization call should be made
   // while we are single threaded). Returns false if unable to initialize.
   static bool Initialize();
 
   // Sets internal status_ to either become ACTIVE, or DEACTIVATED,
   // based on argument being true or false respectively.
   // If tracking is not compiled in, this function will return false.
   static bool InitializeAndSetTrackingStatus(bool status);
   static bool tracking_status();
 
+  // Special versions of Now() for getting times at start and end of a tracked
+  // run.  They are super fast when tracking is disabled, and have some interal

[ramant (doing other things), 2011/11/14 04:41:58]

nit: interal -> internal

[jar (doing other things), 2011/11/14 05:04:50]

Done.

+  // side effects when we are tracking, so that we can deduce the amount of time
+  // accumulated outside of execution of tracked runs.
+  static TrackedTime NowForStartOfRun();
+  static TrackedTime NowForEndOfRun();
+
   // Provide a time function that does nothing (runs fast) when we don't have
   // the profiler enabled.  It will generally be optimized away when it is
   // ifdef'ed to be small enough (allowing the profiler to be "compiled out" of
   // the code).
   static TrackedTime Now();
 
  private:
   // Allow only tests to call ShutdownSingleThreadedCleanup.  We NEVER call it
   // in production code.
   friend class TrackedObjectsTest;
@@ skipping 131 matching lines @@
   }
 
  private:
 
   DISALLOW_COPY_AND_ASSIGN(AutoTracking);
 };
 
 }  // namespace tracked_objects
 
 #endif  // BASE_TRACKED_OBJECTS_H_