base/test/perf_time_logger.h

   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_