Support Closure in ALL the loops!

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 <string>
@@ skipping 475 matching lines @@
 
   // For a given accumulated array of results, use the comparator to sort and
   // subtotal, writing the results to the output.
   static void WriteHTMLTotalAndSubtotals(
       const DataCollector::Collection& match_array,
       const Comparator& comparator, std::string* output);
 
   // In this thread's data, record a new birth.
   Births* TallyABirth(const Location& location);
 
+
   // Find a place to record a death on this thread.
   void TallyADeath(const Births& lifetimes, const base::TimeDelta& duration);
 
+  // Helper methods to only tally if the current thread has tracking active.
+  //
+  // TallyABirthIfActive will returns NULL if the birth cannot be tallied.
+  static Births* TallyABirthIfActive(const Location& location);
+  static void TallyADeathIfActive(const Births* lifetimes,
+                                  const base::TimeDelta& duration);
+
   // (Thread safe) Get start of list of instances.
   static ThreadData* first();
   // Iterate through the null terminated list of instances.
   ThreadData* next() const { return next_; }
 
   MessageLoop* message_loop() const { return message_loop_; }
   const std::string ThreadName() const;
 
   // Using our lock, make a copy of the specified maps.  These calls may arrive
   // from non-local threads, and are used to quickly scan data from all threads
@@ skipping 150 matching lines @@
   };
   static State state_;
 
   DISALLOW_COPY_AND_ASSIGN(AutoTracking);
 };
 
 
 }  // namespace tracked_objects
 
 #endif  // BASE_TRACKED_OBJECTS_H_