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00001 #ifndef UTILITIES_TIMING_PENTIUMTIMER_H 00002 #define UTILITIES_TIMING_PENTIUMTIMER_H 00003 // 00004 // 00005 // V 0.0 00006 // 00007 00008 #include "Utilities/Timing/interface/GenTimer.h" 00009 00010 typedef unsigned long long int PentiumTimeType; 00011 typedef long long int PentiumTimeIntervalType; 00012 00013 extern "C" inline PentiumTimeType rdtscPentium() { 00014 PentiumTimeType x; 00015 // Works only for x86 machines in protected mode. 00016 __asm__ volatile (".byte 0x0f, 0x31" : "=A" (x)); 00017 return x; 00018 } 00019 00020 00021 00022 struct PentiumTime { 00023 00024 struct OneTick { 00025 OneTick(); 00026 ~OneTick(); 00027 00028 double one; 00029 }; 00030 00031 static double oneTick() { 00032 static OneTick local; 00033 return local.one; 00034 }; 00035 00036 typedef GenTimeInterval<PentiumTime> TimeInterval; 00037 typedef PentiumTimeIntervalType IntervalType; 00038 typedef PentiumTimeType TimeType; 00039 00040 inline static TimeType time() { return rdtscPentium();} 00041 inline static TimeType time(int) { return rdtscPentium();} 00042 00043 }; 00044 00045 00049 typedef GenTimer<PentiumTime> PentiumTimer; 00050 00051 00052 template<> 00053 inline 00054 GenTimer<PentiumTime>::GenTimer() : elapsed(0), running_(0), pid(0) {} 00055 00056 #endif // UTILITIES_TIMING_PENTIUMTIMER_H
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