base/test/simple_test_clock.h

   1 // Copyright (c) 2012 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_SIMPLE_TEST_CLOCK_H_
   6 #define BASE_SIMPLE_TEST_CLOCK_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/synchronization/lock.h"
  10 #include "base/time/clock.h"
  11 #include "base/time/time.h"
  12
  13 namespace base {
  14
  15 // SimpleTestClock is a Clock implementation that gives control over
  16 // the returned Time objects.  All methods may be called from any
  17 // thread.
  18 class SimpleTestClock : public Clock {
  19  public:
  20   // Starts off with a clock set to Time().
  21   SimpleTestClock();
  22   virtual ~SimpleTestClock();
  23
  24   virtual Time Now() OVERRIDE;
  25
  26   // Advances the clock by |delta|.
  27   void Advance(TimeDelta delta);
  28
  29   // Sets the clock to the given time.
  30   void SetNow(Time now);
  31
  32  private:
  33   // Protects |now_|.
  34   Lock lock_;
  35
  36   Time now_;
  37 };
  38
  39 }  // namespace base
  40
  41 #endif  // BASE_SIMPLE_TEST_CLOCK_H_