Page Speed Optimization Libraries  1.4.26.1
net/instaweb/util/public/mock_timer.h
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00001 /*
00002  * Copyright 2010 Google Inc.
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *      http:///www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00018 
00019 #ifndef NET_INSTAWEB_UTIL_PUBLIC_MOCK_TIMER_H_
00020 #define NET_INSTAWEB_UTIL_PUBLIC_MOCK_TIMER_H_
00021 
00022 #include <vector>                       
00023 
00024 #include "net/instaweb/util/public/abstract_mutex.h"
00025 #include "net/instaweb/util/public/basictypes.h"
00026 #include "net/instaweb/util/public/scoped_ptr.h"
00027 #include "net/instaweb/util/public/timer.h"
00028 
00029 namespace net_instaweb {
00030 
00031 class Function;
00032 
00033 class MockTimer : public Timer {
00034  public:
00035   typedef void (*Callback)(void* user_data);
00036 
00038   static const int64 kApr_5_2010_ms;
00039 
00040   explicit MockTimer(int64 time_ms);
00041   virtual ~MockTimer();
00042 
00045   void SetTimeUs(int64 new_time_us);
00046   void SetTimeMs(int64 new_time_ms) { SetTimeUs(1000 * new_time_ms); }
00047 
00049   void AdvanceUs(int64 delta_us) { SetTimeUs(time_us_ + delta_us); }
00050 
00052   void AdvanceMs(int64 delta_ms) { AdvanceUs(1000 * delta_ms); }
00053 
00055   void SetTimeDeltaUs(int64 delta_us) {
00056     SetTimeDeltaUsWithCallback(delta_us, NULL);
00057   }
00058 
00062   void SetTimeDeltaUsWithCallback(int64 delta_us,
00063                                   Function* callback);
00064 
00066   void SetTimeDeltaMs(int64 delta_ms) { SetTimeDeltaUs(1000 * delta_ms); }
00067 
00069   virtual int64 NowUs() const;
00070   virtual void SleepUs(int64 us) { AdvanceUs(us); }
00071   virtual void SleepMs(int64 ms) { AdvanceUs(1000 * ms); }
00072 
00076   void set_mutex(AbstractMutex* mutex) { mutex_.reset(mutex); }
00077 
00078  private:
00079   typedef struct {
00080     int64 time;
00081     Function* callback;
00082   } TimeAndCallback;
00083   mutable int64 time_us_;
00084   scoped_ptr<AbstractMutex> mutex_;
00085   std::vector<TimeAndCallback> deltas_us_;
00086   mutable unsigned int next_delta_;
00087 
00088   DISALLOW_COPY_AND_ASSIGN(MockTimer);
00089 };
00090 
00091 }  
00092 
00093 #endif  ///< NET_INSTAWEB_UTIL_PUBLIC_MOCK_TIMER_H_
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