HtTime.h

00001 // HtTime.h
00002 //
00003 // class HtTime:
00004 // tools for timing 
00005 //
00006 // Part of the ht://Dig package <http://www.htdig.org/>
00007 // Copyright (c) 1999, 2000, 2001 The ht://Dig Group
00008 // For copyright details, see the file COPYING in your distribution
00009 // or the GNU General Public License version 2 or later
00010 // <http://www.gnu.org/copyleft/gpl.html>
00011 //
00012 // $Id: HtTime_8h-source.html,v 1.1 2008年06月08日 10:12:54 sebdiaz Exp $
00013 //
00014 #ifndef _HtTime_h_
00015 #define _HtTime_h_
00016 
00017 #if TIME_WITH_SYS_TIME
00018 #include <sys/time.h>
00019 #include <time.h>
00020 #else
00021 # if HAVE_SYS_TIME_H
00022 # include <sys/time.h>
00023 # else
00024 # include <time.h>
00025 # endif
00026 #endif
00027 
00028 
00029 class HtTime
00030 {
00031 public:
00032 // time in seconds (double format)
00033 static inline double DTime()
00034 {
00035 struct timeval tv;
00036 gettimeofday(&tv,NULL);
00037 return(tv.tv_usec/1000000.0+tv.tv_sec);
00038 }
00039 // time in seconds relative to T0 (double format)
00040 static inline double DTime(double T0)
00041 {
00042 struct timeval tv;
00043 gettimeofday(&tv,NULL);
00044 return((tv.tv_usec/1000000.0+tv.tv_sec)-T0);
00045 }
00046 
00047 // Do something every x seconds
00048 class Periodic
00049 {
00050 double t0;
00051 double last;
00052 double period;
00053 public:
00054 double total(){return(HtTime::DTime(t0));}
00055 void change_period(double nperiod){period=nperiod;}
00056 int operator()(double *prperiod=NULL)
00057 {
00058 double t=HtTime::DTime(t0);
00059 if(prperiod){*prperiod=t-last;}
00060 if((t-last)>period)
00061 {
00062 last=t;
00063 return(1);
00064 }
00065 return(0);
00066 }
00067 Periodic(double nperiod=.1)
00068 {
00069 period=nperiod;
00070 t0=HtTime::DTime();
00071 last=0;
00072 }
00073 };
00074 
00075 
00076 
00077 #ifdef NOTDEF
00078 // print progression message every x seconds
00079 class Progression
00080 {
00081 double t0;
00082 double last;
00083 double period;
00084 char *label;
00085 public:
00086 double total(){return(HtTime::DTime()-t0);}
00087 int operator()(double x)
00088 {
00089 double t=HtTime::DTime()-t0;
00090 if((t-last)>period)
00091 {
00092 last=t;
00093 printf("%s (%f): %f\n",label,t,x);
00094 return(1);
00095 }
00096 return(0);
00097 }
00098 Progression(double nperiod=.1,char *nlabel="progression")
00099 {
00100 label=nlabel;
00101 period=nperiod;
00102 t0=HtTime::DTime();
00103 last=0;
00104 }
00105 };
00106 #endif
00107 };
00108 #endif // _HtTime_h_
00109 
00110 
00111 
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