1 //===-- Timer.cpp - Interval Timing Support -------------------------------===//
3 // Interval Timing implementation.
5 //===----------------------------------------------------------------------===//
7 #include "Support/Timer.h"
8 #include <sys/resource.h>
10 #include <sys/unistd.h>
18 static TimerGroup *DefaultTimerGroup = 0;
19 static TimerGroup *getDefaultTimerGroup() {
20 if (DefaultTimerGroup) return DefaultTimerGroup;
21 return DefaultTimerGroup = new TimerGroup("Miscellaneous Ungrouped Timers");
24 Timer::Timer(const std::string &N)
25 : Elapsed(0), UserTime(0), SystemTime(0), MaxRSS(0), Name(N),
26 Started(false), TG(getDefaultTimerGroup()) {
30 Timer::Timer(const std::string &N, TimerGroup &tg)
31 : Elapsed(0), UserTime(0), SystemTime(0), MaxRSS(0), Name(N),
32 Started(false), TG(&tg) {
36 Timer::Timer(const Timer &T) {
38 if (TG) TG->addTimer();
43 // Copy ctor, initialize with no TG member.
44 Timer::Timer(bool, const Timer &T) {
45 TG = T.TG; // Avoid assertion in operator=
46 operator=(T); // Copy contents
55 TG->addTimerToPrint(*this);
62 double Elapsed, UserTime, SystemTime;
66 static TimeRecord getTimeRecord() {
70 if (getrusage(RUSAGE_SELF, &RU)) {
71 perror("getrusage call failed: -time-passes info incorrect!");
75 Result.Elapsed = T.tv_sec + T.tv_usec/1000000.0;
76 Result.UserTime = RU.ru_utime.tv_sec + RU.ru_utime.tv_usec/1000000.0;
77 Result.SystemTime = RU.ru_stime.tv_sec + RU.ru_stime.tv_usec/1000000.0;
80 struct mallinfo MI = mallinfo();
81 Result.MaxRSS = MI.uordblks;
89 void Timer::startTimer() {
91 TimeRecord TR = getTimeRecord();
92 Elapsed -= TR.Elapsed;
93 UserTime -= TR.UserTime;
94 SystemTime -= TR.SystemTime;
98 void Timer::stopTimer() {
99 TimeRecord TR = getTimeRecord();
100 Elapsed += TR.Elapsed;
101 UserTime += TR.UserTime;
102 SystemTime += TR.SystemTime;
104 if ((signed long)MaxRSS < 0)
108 void Timer::sum(const Timer &T) {
109 Elapsed += T.Elapsed;
110 UserTime += T.UserTime;
111 SystemTime += T.SystemTime;
115 //===----------------------------------------------------------------------===//
116 // TimerGroup Implementation
117 //===----------------------------------------------------------------------===//
119 static void printVal(double Val, double Total) {
120 if (Total < 1e-7) // Avoid dividing by zero...
121 fprintf(stderr, " ----- ");
123 fprintf(stderr, " %7.4f (%5.1f%%)", Val, Val*100/Total);
126 void Timer::print(const Timer &Total) {
128 printVal(UserTime, Total.UserTime);
129 if (Total.SystemTime)
130 printVal(SystemTime, Total.SystemTime);
131 if (Total.getProcessTime())
132 printVal(getProcessTime(), Total.getProcessTime());
133 printVal(Elapsed, Total.Elapsed);
135 fprintf(stderr, " ");
138 fprintf(stderr, " %8ld ", MaxRSS);
139 std::cerr << Name << "\n";
141 Started = false; // Once printed, don't print again
145 void TimerGroup::removeTimer() {
146 if (--NumTimers == 0 && !TimersToPrint.empty()) { // Print timing report...
147 // Sort the timers in descending order by amount of time taken...
148 std::sort(TimersToPrint.begin(), TimersToPrint.end(),
149 std::greater<Timer>());
151 // Figure out how many spaces to indent TimerGroup name...
152 unsigned Padding = (80-Name.length())/2;
153 if (Padding > 80) Padding = 0; // Don't allow "negative" numbers
156 { // Scope to contain Total timer... don't allow total timer to drop us to
158 Timer Total("TOTAL");
160 for (unsigned i = 0, e = TimersToPrint.size(); i != e; ++i)
161 Total.sum(TimersToPrint[i]);
163 // Print out timing header...
164 std::cerr << "===" << std::string(73, '-') << "===\n"
165 << std::string(Padding, ' ') << Name << "\n"
166 << "===" << std::string(73, '-')
167 << "===\n Total Execution Time: " << Total.getProcessTime()
168 << " seconds (" << Total.getWallTime()
169 << " wall clock)\n\n";
172 std::cerr << " ---User Time---";
173 if (Total.SystemTime)
174 std::cerr << " --System Time--";
175 if (Total.getProcessTime())
176 std::cerr << " --User+System--";
177 std::cerr << " ---Wall Time---";
179 if (Total.getMaxRSS())
180 std::cerr << " ---Mem---";
181 std::cerr << " --- Name ---\n";
183 // Loop through all of the timing data, printing it out...
184 for (unsigned i = 0, e = TimersToPrint.size(); i != e; ++i)
185 TimersToPrint[i].print(Total);
188 std::cerr << std::endl; // Flush output
192 TimersToPrint.clear();
195 // Delete default timer group!
196 if (NumTimers == 0 && this == DefaultTimerGroup) {
197 delete DefaultTimerGroup;
198 DefaultTimerGroup = 0;