Page Speed Optimization Libraries
1.6.29.3
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00001 /* 00002 * Copyright 2013 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_COUNTDOWN_TIMER_H_ 00020 #define NET_INSTAWEB_UTIL_PUBLIC_COUNTDOWN_TIMER_H_ 00021 00022 #include <time.h> 00023 #include "net/instaweb/util/public/basictypes.h" 00024 00025 namespace net_instaweb { 00026 00027 class Timer; 00028 00033 class CountdownTimer { 00034 public: 00035 CountdownTimer(Timer* timer, 00036 void* user_data, 00037 int64 allowed_time_ms); 00038 00039 void Reset(int64 allowed_time_ms); 00040 00041 bool HaveTimeLeft() const; 00042 00043 void* user_data() const { return user_data_; } 00044 00045 int64 TimeLeftMs() const; 00046 00047 int64 TimeElapsedMs() const; 00048 00049 private: 00050 Timer* timer_; 00051 void* user_data_; 00052 clock_t limit_time_us_; 00053 clock_t start_time_us_; 00054 }; 00055 00056 } 00057 00058 #endif ///< NET_INSTAWEB_UTIL_PUBLIC_COUNTDOWN_TIMER_H_