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!");
74 struct mallinfo MI = mallinfo();
77 Result.Elapsed = T.tv_sec + T.tv_usec/1000000.0;
78 Result.UserTime = RU.ru_utime.tv_sec + RU.ru_utime.tv_usec/1000000.0;
79 Result.SystemTime = RU.ru_stime.tv_sec + RU.ru_stime.tv_usec/1000000.0;
80 Result.MaxRSS = MI.uordblks+MI.usmblks;
84 void Timer::startTimer() {
86 TimeRecord TR = getTimeRecord();
87 Elapsed -= TR.Elapsed;
88 UserTime -= TR.UserTime;
89 SystemTime -= TR.SystemTime;
93 void Timer::stopTimer() {
94 TimeRecord TR = getTimeRecord();
95 Elapsed += TR.Elapsed;
96 UserTime += TR.UserTime;
97 SystemTime += TR.SystemTime;
99 if ((signed long)MaxRSS < 0)
103 void Timer::sum(const Timer &T) {
104 Elapsed += T.Elapsed;
105 UserTime += T.UserTime;
106 SystemTime += T.SystemTime;
110 //===----------------------------------------------------------------------===//
111 // TimerGroup Implementation
112 //===----------------------------------------------------------------------===//
114 static void printVal(double Val, double Total) {
115 if (Total < 1e-7) // Avoid dividing by zero...
116 fprintf(stderr, " ----- ");
118 fprintf(stderr, " %7.4f (%5.1f%%)", Val, Val*100/Total);
121 void Timer::print(const Timer &Total) {
123 printVal(UserTime, Total.UserTime);
124 if (Total.SystemTime)
125 printVal(SystemTime, Total.SystemTime);
126 if (Total.getProcessTime())
127 printVal(getProcessTime(), Total.getProcessTime());
128 printVal(Elapsed, Total.Elapsed);
130 fprintf(stderr, " ");
133 fprintf(stderr, " %8ld ", MaxRSS);
134 std::cerr << Name << "\n";
136 Started = false; // Once printed, don't print again
140 void TimerGroup::removeTimer() {
141 if (--NumTimers == 0 && !TimersToPrint.empty()) { // Print timing report...
142 // Sort the timers in descending order by amount of time taken...
143 std::sort(TimersToPrint.begin(), TimersToPrint.end(),
144 std::greater<Timer>());
146 // Figure out how many spaces to indent TimerGroup name...
147 unsigned Padding = (80-Name.length())/2;
148 if (Padding > 80) Padding = 0; // Don't allow "negative" numbers
151 { // Scope to contain Total timer... don't allow total timer to drop us to
153 Timer Total("TOTAL");
155 for (unsigned i = 0, e = TimersToPrint.size(); i != e; ++i)
156 Total.sum(TimersToPrint[i]);
158 // Print out timing header...
159 std::cerr << "===" << std::string(73, '-') << "===\n"
160 << std::string(Padding, ' ') << Name << "\n"
161 << "===" << std::string(73, '-')
162 << "===\n Total Execution Time: " << Total.getProcessTime()
163 << " seconds (" << Total.getWallTime()
164 << " wall clock)\n\n";
167 std::cerr << " ---User Time---";
168 if (Total.SystemTime)
169 std::cerr << " --System Time--";
170 if (Total.getProcessTime())
171 std::cerr << " --User+System--";
172 std::cerr << " ---Wall Time---";
174 if (Total.getMaxRSS())
175 std::cerr << " ---Mem---";
176 std::cerr << " --- Name ---\n";
178 // Loop through all of the timing data, printing it out...
179 for (unsigned i = 0, e = TimersToPrint.size(); i != e; ++i)
180 TimersToPrint[i].print(Total);
183 std::cerr << std::endl; // Flush output
187 TimersToPrint.clear();
190 // Delete default timer group!
191 if (NumTimers == 0 && this == DefaultTimerGroup) {
192 delete DefaultTimerGroup;
193 DefaultTimerGroup = 0;