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00004 #ifndef _CoinTime_hpp
00005 #define _CoinTime_hpp
00006
00007
00008
00009
00010
00011
00012
00013
00014 #include <ctime>
00015 #if defined(_MSC_VER)
00016
00017 # pragma warning(disable:4786)
00018 #else
00019
00020 #if defined(__MACH__) || defined (__FreeBSD__)
00021 #include <sys/time.h>
00022 #endif
00023 #if !defined(__MSVCRT__)
00024 #include <sys/resource.h>
00025 #endif
00026 #endif
00027
00028
00029
00030 #if defined(_MSC_VER)
00031
00032 #if 0 // change this to 1 if want to use the win32 API
00033 #include <windows.h>
00034 #ifdef small
00035
00036
00037 #undef small
00038 #endif
00039 #define TWO_TO_THE_THIRTYTWO 4294967296.0
00040 #define DELTA_EPOCH_IN_SECS 11644473600.0
00041 inline double CoinGetTimeOfDay()
00042 {
00043 FILETIME ft;
00044
00045 GetSystemTimeAsFileTime(&ft);
00046 double t = ft.dwHighDateTime * TWO_TO_THE_THIRTYTWO + ft.dwLowDateTime;
00047 t = t/10000000.0 - DELTA_EPOCH_IN_SECS;
00048 return t;
00049 }
00050 #else
00051 #include <sys/types.h>
00052 #include <sys/timeb.h>
00053 inline double CoinGetTimeOfDay()
00054 {
00055 struct _timeb timebuffer;
00056 #pragma warning(disable:4996)
00057 _ftime( &timebuffer );
00058 #pragma warning(default:4996)
00059 return timebuffer.time + timebuffer.millitm/1000.0;
00060 }
00061 #endif
00062
00063 #else
00064
00065 #include <sys/time.h>
00066
00067 inline double CoinGetTimeOfDay()
00068 {
00069 struct timeval tv;
00070 gettimeofday(&tv, NULL);
00071 return tv.tv_sec + tv.tv_usec/1000000.0;
00072 }
00073
00074 #endif // _MSC_VER
00075
00084 inline double CoinWallclockTime(double callType = 0)
00085 {
00086 double callTime = CoinGetTimeOfDay();
00087 static const double firstCall = callType > 0 ? callType : callTime;
00088 return callType < 0 ? firstCall : callTime - firstCall;
00089 }
00090
00091
00092
00093 static inline double CoinCpuTime()
00094 {
00095 double cpu_temp;
00096 #if defined(_MSC_VER) || defined(__MSVCRT__)
00097 unsigned int ticksnow;
00098
00099 ticksnow = (unsigned int)clock();
00100
00101 cpu_temp = (double)((double)ticksnow/CLOCKS_PER_SEC);
00102 #else
00103 struct rusage usage;
00104 # ifdef ZEROFAULT
00105 usage.ru_utime.tv_sec = 0 ;
00106 usage.ru_utime.tv_usec = 0 ;
00107 # endif
00108 getrusage(RUSAGE_SELF,&usage);
00109 cpu_temp = usage.ru_utime.tv_sec;
00110 cpu_temp += 1.0e-6*((double) usage.ru_utime.tv_usec);
00111 #endif
00112 return cpu_temp;
00113 }
00114
00115
00116
00117 static inline double CoinCpuTimeJustChildren()
00118 {
00119 double cpu_temp;
00120 #if defined(_MSC_VER) || defined(__MSVCRT__)
00121 cpu_temp = 0.0;
00122 #else
00123 struct rusage usage;
00124 # ifdef ZEROFAULT
00125 usage.ru_utime.tv_sec = 0 ;
00126 usage.ru_utime.tv_usec = 0 ;
00127 # endif
00128 getrusage(RUSAGE_CHILDREN,&usage);
00129 cpu_temp = usage.ru_utime.tv_sec;
00130 cpu_temp += 1.0e-6*((double) usage.ru_utime.tv_usec);
00131 #endif
00132 return cpu_temp;
00133 }
00134
00135
00136 #include <fstream>
00137
00153 class CoinTimer
00154 {
00155 private:
00157 double start;
00159 double limit;
00160 double end;
00161 #ifdef COIN_COMPILE_WITH_TRACING
00162 std::fstream* stream;
00163 bool write_stream;
00164 #endif
00165
00166 private:
00167 #ifdef COIN_COMPILE_WITH_TRACING
00168 inline bool evaluate(bool b_tmp) const {
00169 int i_tmp = b_tmp;
00170 if (stream) {
00171 if (write_stream)
00172 (*stream) << i_tmp << "\n";
00173 else
00174 (*stream) >> i_tmp;
00175 }
00176 return i_tmp;
00177 }
00178 inline double evaluate(double d_tmp) const {
00179 if (stream) {
00180 if (write_stream)
00181 (*stream) << d_tmp << "\n";
00182 else
00183 (*stream) >> d_tmp;
00184 }
00185 return d_tmp;
00186 }
00187 #else
00188 inline bool evaluate(const bool b_tmp) const {
00189 return b_tmp;
00190 }
00191 inline double evaluate(const double d_tmp) const {
00192 return d_tmp;
00193 }
00194 #endif
00195
00196 public:
00198 CoinTimer() :
00199 start(0), limit(1e100), end(1e100)
00200 #ifdef COIN_COMPILE_WITH_TRACING
00201 , stream(0), write_stream(true)
00202 #endif
00203 {}
00204
00206 CoinTimer(double lim) :
00207 start(CoinCpuTime()), limit(lim), end(start+lim)
00208 #ifdef COIN_COMPILE_WITH_TRACING
00209 , stream(0), write_stream(true)
00210 #endif
00211 {}
00212
00213 #ifdef COIN_COMPILE_WITH_TRACING
00214
00216 CoinTimer(std::fstream* s, bool write) :
00217 start(0), limit(1e100), end(1e100),
00218 stream(s), write_stream(write) {}
00219
00222 CoinTimer(double lim, std::fstream* s, bool w) :
00223 start(CoinCpuTime()), limit(lim), end(start+lim),
00224 stream(s), write_stream(w) {}
00225 #endif
00226
00228 inline void restart() { start=CoinCpuTime(); end=start+limit; }
00230 inline void reset() { restart(); }
00232 inline void reset(double lim) { limit=lim; restart(); }
00233
00236 inline bool isPastPercent(double pct) const {
00237 return evaluate(start + limit * pct < CoinCpuTime());
00238 }
00241 inline bool isPast(double lim) const {
00242 return evaluate(start + lim < CoinCpuTime());
00243 }
00246 inline bool isExpired() const {
00247 return evaluate(end < CoinCpuTime());
00248 }
00249
00251 inline double timeLeft() const {
00252 return evaluate(end - CoinCpuTime());
00253 }
00254
00256 inline double timeElapsed() const {
00257 return evaluate(CoinCpuTime() - start);
00258 }
00259
00260 inline void setLimit(double l) {
00261 limit = l;
00262 return;
00263 }
00264 };
00265
00266 #endif