C:/knet/include/kNet/Clock.h
Go to the documentation of this file.
00001 /* Copyright 2010 Jukka Jylänki 00002 00003 Licensed under the Apache License, Version 2.0 (the "License"); 00004 you may not use this file except in compliance with the License. 00005 You may obtain a copy of the License at 00006 00007 http://www.apache.org/licenses/LICENSE-2.0 00008 00009 Unless required by applicable law or agreed to in writing, software 00010 distributed under the License is distributed on an "AS IS" BASIS, 00011 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00012 See the License for the specific language governing permissions and 00013 limitations under the License. */ 00014 #pragma once 00015 00019 #ifdef WIN32 00020 #include <Windows.h> 00021 #endif 00022 00023 namespace kNet 00024 { 00025 00027 typedef unsigned long long tick_t; 00028 00033 class Clock 00034 { 00035 public: 00036 Clock(); 00037 // ~Clock() {} 00038 00040 static void Sleep(int milliseconds); 00041 00043 static int Year(); 00044 00046 static int Month(); 00047 00049 static int Day(); 00050 00052 static int Hour(); 00053 00055 static int Min(); 00056 00058 static int Sec(); 00059 00061 static unsigned long SystemTime(); 00062 00064 static unsigned long Time(); 00065 00067 static unsigned long TickU32(); 00068 00070 static tick_t Tick(); 00071 00073 static tick_t TicksPerSec(); 00074 00075 static inline tick_t TicksPerMillisecond() { return TicksPerSec() / 1000; } 00076 00078 static inline tick_t TicksInBetween(tick_t newTick, tick_t oldTick) 00079 { 00080 return (tick_t)(newTick - oldTick); 00081 } 00082 00084 static inline bool IsNewer(tick_t newTick, tick_t oldTick) 00085 { 00086 return TicksInBetween(newTick, oldTick) < ((tick_t)(-1) >> 1); 00087 } 00088 00089 static inline float MillisecondsSinceF(tick_t oldTick) { return TimespanToMillisecondsF(oldTick, Tick()); } 00090 static inline double MillisecondsSinceD(tick_t oldTick) { return TimespanToMillisecondsD(oldTick, Tick()); } 00091 00092 static inline float SecondsSinceF(tick_t oldTick) { return TimespanToSecondsF(oldTick, Tick()); } 00093 static inline double SecondsSinceD(tick_t oldTick) { return TimespanToSecondsD(oldTick, Tick()); } 00094 00095 static inline float TicksToMillisecondsF(tick_t ticks) { return ticks * 1000.f / TicksPerSec(); } 00096 static inline double TicksToMillisecondsD(tick_t ticks) { return ticks * 1000.0 / TicksPerSec(); } 00097 00098 static inline float TicksToSecondsF(tick_t ticks) { return ticks / (float)TicksPerSec(); } 00099 static inline double TicksToSecondsD(tick_t ticks) { return ticks / (double)TicksPerSec(); } 00100 00101 static inline float TimespanToMillisecondsF(tick_t oldTick, tick_t newTick) { return TicksToMillisecondsF(TicksInBetween(newTick, oldTick)); } 00102 static inline double TimespanToMillisecondsD(tick_t oldTick, tick_t newTick) { return TicksToMillisecondsD(TicksInBetween(newTick, oldTick)); } 00103 00104 static inline float TimespanToSecondsF(tick_t oldTick, tick_t newTick) { return TicksToSecondsF(TicksInBetween(newTick, oldTick)); } 00105 static inline double TimespanToSecondsD(tick_t oldTick, tick_t newTick) { return TicksToSecondsD(TicksInBetween(newTick, oldTick)); } 00106 00107 private: 00108 static tick_t appStartTime; 00109 00111 static void InitClockData(); 00112 00113 #ifdef WIN32 00114 static LARGE_INTEGER ddwTimerFrequency; 00115 static LARGE_INTEGER ddwTimer; 00116 00117 #endif 00118 }; 00119 00120 } // ~kNet
