| Geant4 Cross Reference |
1 //
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24 // ********************************************************************
25 //
26 // G4Timer class implementation
27 //
28 // Author: P.Kent, 21.08.95 - First implementation
29 // Revision: G.Cosmo, 29.04.97 - Added timings for Windows
30 // --------------------------------------------------------------------
31
32 #include "G4Timer.hh"
33 #include "G4ios.hh"
34 #include "G4Exception.hh"
35
36 #include <iomanip>
37
38 #if defined(IRIX6_2)
39 # if defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE_EXTENDED == 1)
40 # define __vfork vfork
41 # endif
42 #endif
43
44 #ifdef WIN32
45 # include <sys/types.h>
46 # include <windows.h>
47
48 // extract milliseconds time unit
49 G4int sysconf(G4int a)
50 {
51 if(a == _SC_CLK_TCK)
52 return 1000;
53 else
54 return 0;
55 }
56
57 static clock_t filetime2msec(FILETIME* t)
58 {
59 return (clock_t)((((G4float) t->dwHighDateTime) * 429496.7296) +
60 (((G4float) t->dwLowDateTime) * .0001));
61 }
62
63 clock_t times(struct tms* t)
64 {
65 FILETIME ct = { 0, 0 }, et = { 0, 0 }, st = { 0, 0 }, ut = { 0, 0 },
66 rt = { 0, 0 };
67 SYSTEMTIME realtime;
68
69 GetSystemTime(&realtime);
70 SystemTimeToFileTime(&realtime, &rt); // get real time in 10^-9 sec
71 if(t != 0)
72 {
73 GetProcessTimes(GetCurrentProcess(), &ct, &et, &st, &ut);
74 // get process time in 10^-9 sec
75 t->tms_utime = t->tms_cutime = filetime2msec(&ut);
76 t->tms_stime = t->tms_cstime = filetime2msec(&st);
77 }
78 return filetime2msec(&rt);
79 }
80 #endif /* WIN32 */
81
82 // Print timer status on std::ostream
83 //
84 std::ostream& operator<<(std::ostream& os, const G4Timer& t)
85 {
86 // so fixed doesn't propagate
87 std::stringstream ss;
88 ss << std::fixed;
89 if(t.IsValid())
90 {
91 ss << "User=" << t.GetUserElapsed() << "s Real=" << t.GetRealElapsed()
92 << "s Sys=" << t.GetSystemElapsed() << "s";
93 #ifdef G4MULTITHREADED
94 // avoid possible FPE error
95 if(t.GetRealElapsed() > 1.0e-6)
96 {
97 G4double cpu_util = (t.GetUserElapsed() + t.GetSystemElapsed()) /
98 t.GetRealElapsed() * 100.0;
99 ss << std::setprecision(1);
100 ss << " [Cpu=" << std::setprecision(1) << cpu_util << "%]";
101 }
102 #endif
103 }
104 else
105 {
106 ss << "User=****s Real=****s Sys=****s";
107 }
108 os << ss.str();
109
110 return os;
111 }
112
113 G4double G4Timer::GetRealElapsed() const
114 {
115 if(!fValidTimes)
116 {
117 G4Exception("G4Timer::GetRealElapsed()", "InvalidCondition", FatalException,
118 "Timer not stopped or times not recorded!");
119 }
120 std::chrono::duration<G4double> diff = fEndRealTime - fStartRealTime;
121 return diff.count();
122 }
123
124 G4double G4Timer::GetSystemElapsed() const
125 {
126 if(!fValidTimes)
127 {
128 G4Exception("G4Timer::GetSystemElapsed()", "InvalidCondition",
129 FatalException, "Timer not stopped or times not recorded!");
130 }
131 G4double diff = fEndTimes.tms_stime - fStartTimes.tms_stime;
132 return diff / sysconf(_SC_CLK_TCK);
133 }
134
135 G4double G4Timer::GetUserElapsed() const
136 {
137 if(!fValidTimes)
138 {
139 G4Exception("G4Timer::GetUserElapsed()", "InvalidCondition", FatalException,
140 "Timer not stopped or times not recorded");
141 }
142 G4double diff = fEndTimes.tms_utime - fStartTimes.tms_utime;
143 return diff / sysconf(_SC_CLK_TCK);
144 }
145