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      1 // Copyright 2013 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 BASE_TEST_PERF_TIME_LOGGER_H_
      6 #define BASE_TEST_PERF_TIME_LOGGER_H_
      7 
      8 #include <string>
      9 
     10 #include "base/basictypes.h"
     11 #include "base/timer/elapsed_timer.h"
     12 
     13 namespace base {
     14 
     15 // Automates calling LogPerfResult for the common case where you want
     16 // to measure the time that something took. Call Done() when the test
     17 // is complete if you do extra work after the test or there are stack
     18 // objects with potentially expensive constructors. Otherwise, this
     19 // class with automatically log on destruction.
     20 class PerfTimeLogger {
     21  public:
     22   explicit PerfTimeLogger(const char* test_name);
     23   ~PerfTimeLogger();
     24 
     25   void Done();
     26 
     27  private:
     28   bool logged_;
     29   std::string test_name_;
     30   ElapsedTimer timer_;
     31 
     32   DISALLOW_COPY_AND_ASSIGN(PerfTimeLogger);
     33 };
     34 
     35 }  // namespace base
     36 
     37 #endif  // BASE_TEST_PERF_TIME_LOGGER_H_
     38