1 /** @file kmp_stats.cpp
2 * Statistics gathering and processing.
5 //===----------------------------------------------------------------------===//
7 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
8 // See https://llvm.org/LICENSE.txt for license information.
9 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
11 //===----------------------------------------------------------------------===//
15 #include "kmp_stats.h"
22 #include <stdlib.h> // for atexit
25 #define STRINGIZE2(x) #x
26 #define STRINGIZE(x) STRINGIZE2(x)
28 #define expandName(name, flags, ignore) {STRINGIZE(name), flags},
29 statInfo timeStat::timerInfo[] = {
30 KMP_FOREACH_TIMER(expandName, 0){"TIMER_LAST", 0}};
31 const statInfo counter::counterInfo[] = {
32 KMP_FOREACH_COUNTER(expandName, 0){"COUNTER_LAST", 0}};
35 #define expandName(ignore1, ignore2, ignore3) {0.0, 0.0, 0.0},
36 kmp_stats_output_module::rgb_color kmp_stats_output_module::timerColorInfo[] = {
37 KMP_FOREACH_TIMER(expandName, 0){0.0, 0.0, 0.0}};
40 const kmp_stats_output_module::rgb_color
41 kmp_stats_output_module::globalColorArray[] = {
42 {1.0, 0.0, 0.0}, // red
43 {1.0, 0.6, 0.0}, // orange
44 {1.0, 1.0, 0.0}, // yellow
45 {0.0, 1.0, 0.0}, // green
46 {0.0, 0.0, 1.0}, // blue
47 {0.6, 0.2, 0.8}, // purple
48 {1.0, 0.0, 1.0}, // magenta
49 {0.0, 0.4, 0.2}, // dark green
50 {1.0, 1.0, 0.6}, // light yellow
51 {0.6, 0.4, 0.6}, // dirty purple
52 {0.0, 1.0, 1.0}, // cyan
53 {1.0, 0.4, 0.8}, // pink
54 {0.5, 0.5, 0.5}, // grey
55 {0.8, 0.7, 0.5}, // brown
56 {0.6, 0.6, 1.0}, // light blue
57 {1.0, 0.7, 0.5}, // peach
58 {0.8, 0.5, 1.0}, // lavender
59 {0.6, 0.0, 0.0}, // dark red
60 {0.7, 0.6, 0.0}, // gold
61 {0.0, 0.0, 0.0} // black
64 // Ensure that the atexit handler only runs once.
65 static uint32_t statsPrinted = 0;
68 static kmp_stats_output_module *__kmp_stats_global_output = NULL;
70 double logHistogram::binMax[] = {
71 1.e1l, 1.e2l, 1.e3l, 1.e4l, 1.e5l, 1.e6l, 1.e7l, 1.e8l,
72 1.e9l, 1.e10l, 1.e11l, 1.e12l, 1.e13l, 1.e14l, 1.e15l, 1.e16l,
73 1.e17l, 1.e18l, 1.e19l, 1.e20l, 1.e21l, 1.e22l, 1.e23l, 1.e24l,
74 1.e25l, 1.e26l, 1.e27l, 1.e28l, 1.e29l, 1.e30l};
76 /* ************* statistic member functions ************* */
78 void statistic::addSample(double sample) {
80 KMP_DEBUG_ASSERT(std::isfinite(sample));
82 double delta = sample - meanVal;
84 sampleCount = sampleCount + 1;
85 meanVal = meanVal + delta / sampleCount;
86 m2 = m2 + delta * (sample - meanVal);
88 minVal = std::min(minVal, sample);
89 maxVal = std::max(maxVal, sample);
91 hist.addSample(sample);
94 statistic &statistic::operator+=(const statistic &other) {
95 if (other.sampleCount == 0)
98 if (sampleCount == 0) {
103 uint64_t newSampleCount = sampleCount + other.sampleCount;
104 double dnsc = double(newSampleCount);
105 double dsc = double(sampleCount);
106 double dscBydnsc = dsc / dnsc;
107 double dosc = double(other.sampleCount);
108 double delta = other.meanVal - meanVal;
110 // Try to order these calculations to avoid overflows. If this were Fortran,
111 // then the compiler would not be able to re-order over brackets. In C++ it
112 // may be legal to do that (we certainly hope it doesn't, and CC+ Programming
113 // Language 2nd edition suggests it shouldn't, since it says that exploitation
114 // of associativity can only be made if the operation really is associative
115 // (which floating addition isn't...)).
116 meanVal = meanVal * dscBydnsc + other.meanVal * (1 - dscBydnsc);
117 m2 = m2 + other.m2 + dscBydnsc * dosc * delta * delta;
118 minVal = std::min(minVal, other.minVal);
119 maxVal = std::max(maxVal, other.maxVal);
120 sampleCount = newSampleCount;
127 void statistic::scale(double factor) {
128 minVal = minVal * factor;
129 maxVal = maxVal * factor;
130 meanVal = meanVal * factor;
131 m2 = m2 * factor * factor;
135 std::string statistic::format(char unit, bool total) const {
136 std::string result = formatSI(sampleCount, 9, ' ');
138 if (sampleCount == 0) {
139 result = result + std::string(", ") + formatSI(0.0, 9, unit);
140 result = result + std::string(", ") + formatSI(0.0, 9, unit);
141 result = result + std::string(", ") + formatSI(0.0, 9, unit);
143 result = result + std::string(", ") + formatSI(0.0, 9, unit);
144 result = result + std::string(", ") + formatSI(0.0, 9, unit);
146 result = result + std::string(", ") + formatSI(minVal, 9, unit);
147 result = result + std::string(", ") + formatSI(meanVal, 9, unit);
148 result = result + std::string(", ") + formatSI(maxVal, 9, unit);
151 result + std::string(", ") + formatSI(meanVal * sampleCount, 9, unit);
152 result = result + std::string(", ") + formatSI(getSD(), 9, unit);
157 /* ************* histogram member functions ************* */
159 // Lowest bin that has anything in it
160 int logHistogram::minBin() const {
161 for (int i = 0; i < numBins; i++) {
162 if (bins[i].count != 0)
163 return i - logOffset;
168 // Highest bin that has anything in it
169 int logHistogram::maxBin() const {
170 for (int i = numBins - 1; i >= 0; i--) {
171 if (bins[i].count != 0)
172 return i - logOffset;
177 // Which bin does this sample belong in ?
178 uint32_t logHistogram::findBin(double sample) {
179 double v = std::fabs(sample);
180 // Simply loop up looking which bin to put it in.
181 // According to a micro-architect this is likely to be faster than a binary
183 // it will only have one branch mis-predict
184 for (int b = 0; b < numBins; b++)
188 "Trying to add a sample that is too large into a histogram\n");
193 void logHistogram::addSample(double sample) {
202 KMP_DEBUG_ASSERT(std::isfinite(sample));
203 uint32_t bin = findBin(sample);
204 KMP_DEBUG_ASSERT(0 <= bin && bin < numBins);
206 bins[bin].count += 1;
207 bins[bin].total += sample;
214 // This may not be the format we want, but it'll do for now
215 std::string logHistogram::format(char unit) const {
216 std::stringstream result;
218 result << "Bin, Count, Total\n";
220 result << "0, " << formatSI(zeroCount, 9, ' ') << ", ",
221 formatSI(0.0, 9, unit);
222 if (count(minBin()) == 0)
226 for (int i = minBin(); i <= maxBin(); i++) {
227 result << "10**" << i << "<=v<10**" << (i + 1) << ", "
228 << formatSI(count(i), 9, ' ') << ", " << formatSI(total(i), 9, unit);
236 /* ************* explicitTimer member functions ************* */
238 void explicitTimer::start(tsc_tick_count tick) {
241 if (timeStat::logEvent(timerEnumValue)) {
242 __kmp_stats_thread_ptr->incrementNestValue();
247 void explicitTimer::stop(tsc_tick_count tick,
248 kmp_stats_list *stats_ptr /* = nullptr */) {
249 if (startTime.getValue() == 0)
252 stat->addSample(((tick - startTime) - totalPauseTime).ticks());
254 if (timeStat::logEvent(timerEnumValue)) {
256 stats_ptr = __kmp_stats_thread_ptr;
257 stats_ptr->push_event(
258 startTime.getValue() - __kmp_stats_start_time.getValue(),
259 tick.getValue() - __kmp_stats_start_time.getValue(),
260 __kmp_stats_thread_ptr->getNestValue(), timerEnumValue);
261 stats_ptr->decrementNestValue();
264 /* We accept the risk that we drop a sample because it really did start at
270 /* ************* partitionedTimers member functions ************* */
271 partitionedTimers::partitionedTimers() { timer_stack.reserve(8); }
273 // initialize the paritioned timers to an initial timer
274 void partitionedTimers::init(explicitTimer timer) {
275 KMP_DEBUG_ASSERT(this->timer_stack.size() == 0);
276 timer_stack.push_back(timer);
277 timer_stack.back().start(tsc_tick_count::now());
280 // stop/save the current timer, and start the new timer (timer_pair)
281 // There is a special condition where if the current timer is equal to
282 // the one you are trying to push, then it only manipulates the stack,
283 // and it won't stop/start the currently running timer.
284 void partitionedTimers::push(explicitTimer timer) {
285 // get the current timer
286 // pause current timer
288 // start the new timer
289 explicitTimer *current_timer, *new_timer;
291 KMP_DEBUG_ASSERT(this->timer_stack.size() > 0);
292 timer_stack.push_back(timer);
293 stack_size = timer_stack.size();
294 current_timer = &(timer_stack[stack_size - 2]);
295 new_timer = &(timer_stack[stack_size - 1]);
296 tsc_tick_count tick = tsc_tick_count::now();
297 current_timer->pause(tick);
298 new_timer->start(tick);
301 // stop/discard the current timer, and start the previously saved timer
302 void partitionedTimers::pop() {
303 // get the current timer
304 // stop current timer (record event/sample)
306 // get the new current timer and resume
307 explicitTimer *old_timer, *new_timer;
308 size_t stack_size = timer_stack.size();
309 KMP_DEBUG_ASSERT(stack_size > 1);
310 old_timer = &(timer_stack[stack_size - 1]);
311 new_timer = &(timer_stack[stack_size - 2]);
312 tsc_tick_count tick = tsc_tick_count::now();
313 old_timer->stop(tick);
314 new_timer->resume(tick);
315 timer_stack.pop_back();
318 void partitionedTimers::exchange(explicitTimer timer) {
319 // get the current timer
320 // stop current timer (record event/sample)
322 // start the new timer
323 explicitTimer *current_timer, *new_timer;
325 KMP_DEBUG_ASSERT(this->timer_stack.size() > 0);
326 tsc_tick_count tick = tsc_tick_count::now();
327 stack_size = timer_stack.size();
328 current_timer = &(timer_stack[stack_size - 1]);
329 current_timer->stop(tick);
330 timer_stack.pop_back();
331 timer_stack.push_back(timer);
332 new_timer = &(timer_stack[stack_size - 1]);
333 new_timer->start(tick);
336 // Wind up all the currently running timers.
337 // This pops off all the timers from the stack and clears the stack
338 // After this is called, init() must be run again to initialize the
340 void partitionedTimers::windup() {
341 while (timer_stack.size() > 1) {
344 // Pop the timer from the init() call
345 if (timer_stack.size() > 0) {
346 timer_stack.back().stop(tsc_tick_count::now());
347 timer_stack.pop_back();
351 /* ************* kmp_stats_event_vector member functions ************* */
353 void kmp_stats_event_vector::deallocate() {
360 // This function is for qsort() which requires the compare function to return
361 // either a negative number if event1 < event2, a positive number if event1 >
362 // event2 or zero if event1 == event2. This sorts by start time (lowest to
364 int compare_two_events(const void *event1, const void *event2) {
365 const kmp_stats_event *ev1 = RCAST(const kmp_stats_event *, event1);
366 const kmp_stats_event *ev2 = RCAST(const kmp_stats_event *, event2);
368 if (ev1->getStart() < ev2->getStart())
370 else if (ev1->getStart() > ev2->getStart())
376 void kmp_stats_event_vector::sort() {
377 qsort(events, internal_size, sizeof(kmp_stats_event), compare_two_events);
380 /* ************* kmp_stats_list member functions ************* */
382 // returns a pointer to newly created stats node
383 kmp_stats_list *kmp_stats_list::push_back(int gtid) {
384 kmp_stats_list *newnode =
385 (kmp_stats_list *)__kmp_allocate(sizeof(kmp_stats_list));
386 // placement new, only requires space and pointer and initializes (so
387 // __kmp_allocate instead of C++ new[] is used)
388 new (newnode) kmp_stats_list();
389 newnode->setGtid(gtid);
390 newnode->prev = this->prev;
391 newnode->next = this;
392 newnode->prev->next = newnode;
393 newnode->next->prev = newnode;
396 void kmp_stats_list::deallocate() {
397 kmp_stats_list *ptr = this->next;
398 kmp_stats_list *delptr = this->next;
399 while (ptr != this) {
402 // placement new means we have to explicitly call destructor.
403 delptr->_event_vector.deallocate();
404 delptr->~kmp_stats_list();
408 kmp_stats_list::iterator kmp_stats_list::begin() {
409 kmp_stats_list::iterator it;
413 kmp_stats_list::iterator kmp_stats_list::end() {
414 kmp_stats_list::iterator it;
418 int kmp_stats_list::size() {
420 kmp_stats_list::iterator it;
421 for (retval = 0, it = begin(); it != end(); it++, retval++) {
426 /* ************* kmp_stats_list::iterator member functions ************* */
428 kmp_stats_list::iterator::iterator() : ptr(NULL) {}
429 kmp_stats_list::iterator::~iterator() {}
430 kmp_stats_list::iterator kmp_stats_list::iterator::operator++() {
431 this->ptr = this->ptr->next;
434 kmp_stats_list::iterator kmp_stats_list::iterator::operator++(int dummy) {
435 this->ptr = this->ptr->next;
438 kmp_stats_list::iterator kmp_stats_list::iterator::operator--() {
439 this->ptr = this->ptr->prev;
442 kmp_stats_list::iterator kmp_stats_list::iterator::operator--(int dummy) {
443 this->ptr = this->ptr->prev;
446 bool kmp_stats_list::iterator::operator!=(const kmp_stats_list::iterator &rhs) {
447 return this->ptr != rhs.ptr;
449 bool kmp_stats_list::iterator::operator==(const kmp_stats_list::iterator &rhs) {
450 return this->ptr == rhs.ptr;
452 kmp_stats_list *kmp_stats_list::iterator::operator*() const {
456 /* ************* kmp_stats_output_module functions ************** */
458 const char *kmp_stats_output_module::eventsFileName = NULL;
459 const char *kmp_stats_output_module::plotFileName = NULL;
460 int kmp_stats_output_module::printPerThreadFlag = 0;
461 int kmp_stats_output_module::printPerThreadEventsFlag = 0;
463 static char const *lastName(char *name) {
464 int l = strlen(name);
465 for (int i = l - 1; i >= 0; --i) {
474 /* Read the name of the executable from /proc/self/cmdline */
475 static char const *getImageName(char *buffer, size_t buflen) {
476 FILE *f = fopen("/proc/self/cmdline", "r");
481 // The file contains char(0) delimited words from the commandline.
482 // This just returns the last filename component of the first word on the
484 size_t n = fread(buffer, 1, buflen, f);
487 KMP_CHECK_SYSFAIL("fread", 1)
490 buffer[buflen - 1] = char(0);
491 return lastName(buffer);
494 static void getTime(char *buffer, size_t buflen, bool underscores = false) {
499 struct tm *tm_info = localtime(&timer);
501 strftime(buffer, buflen, "%Y-%m-%d_%H%M%S", tm_info);
503 strftime(buffer, buflen, "%Y-%m-%d %H%M%S", tm_info);
506 /* Generate a stats file name, expanding prototypes */
507 static std::string generateFilename(char const *prototype,
508 char const *imageName) {
511 for (int i = 0; prototype[i] != char(0); i++) {
512 char ch = prototype[i];
516 if (prototype[i] == char(0))
519 switch (prototype[i]) {
520 case 't': // Insert time and date
523 getTime(date, sizeof(date), true);
526 case 'e': // Insert executable name
529 case 'p': // Insert pid
531 std::stringstream ss;
545 // init() is called very near the beginning of execution time in the constructor
546 // of __kmp_stats_global_output
547 void kmp_stats_output_module::init() {
549 char *statsFileName = getenv("KMP_STATS_FILE");
550 eventsFileName = getenv("KMP_STATS_EVENTS_FILE");
551 plotFileName = getenv("KMP_STATS_PLOT_FILE");
552 char *threadStats = getenv("KMP_STATS_THREADS");
553 char *threadEvents = getenv("KMP_STATS_EVENTS");
555 // set the stats output filenames based on environment variables and defaults
557 char imageName[1024];
558 // Process any escapes (e.g., %p, %e, %t) in the name
559 outputFileName = generateFilename(
560 statsFileName, getImageName(&imageName[0], sizeof(imageName)));
562 eventsFileName = eventsFileName ? eventsFileName : "events.dat";
563 plotFileName = plotFileName ? plotFileName : "events.plt";
565 // set the flags based on environment variables matching: true, on, 1, .true.
567 printPerThreadFlag = __kmp_str_match_true(threadStats);
568 printPerThreadEventsFlag = __kmp_str_match_true(threadEvents);
570 if (printPerThreadEventsFlag) {
571 // assigns a color to each timer for printing
574 // will clear flag so that no event will be logged
575 timeStat::clearEventFlags();
579 void kmp_stats_output_module::setupEventColors() {
581 int globalColorIndex = 0;
582 int numGlobalColors = sizeof(globalColorArray) / sizeof(rgb_color);
583 for (i = 0; i < TIMER_LAST; i++) {
584 if (timeStat::logEvent((timer_e)i)) {
585 timerColorInfo[i] = globalColorArray[globalColorIndex];
586 globalColorIndex = (globalColorIndex + 1) % numGlobalColors;
591 void kmp_stats_output_module::printTimerStats(FILE *statsOut,
592 statistic const *theStats,
593 statistic const *totalStats) {
595 "Timer, SampleCount, Min, "
596 "Mean, Max, Total, SD\n");
597 for (timer_e s = timer_e(0); s < TIMER_LAST; s = timer_e(s + 1)) {
598 statistic const *stat = &theStats[s];
599 char tag = timeStat::noUnits(s) ? ' ' : 'T';
601 fprintf(statsOut, "%-35s, %s\n", timeStat::name(s),
602 stat->format(tag, true).c_str());
604 // Also print the Total_ versions of times.
605 for (timer_e s = timer_e(0); s < TIMER_LAST; s = timer_e(s + 1)) {
606 char tag = timeStat::noUnits(s) ? ' ' : 'T';
607 if (totalStats && !timeStat::noTotal(s))
608 fprintf(statsOut, "Total_%-29s, %s\n", timeStat::name(s),
609 totalStats[s].format(tag, true).c_str());
612 // Print historgram of statistics
613 if (theStats[0].haveHist()) {
614 fprintf(statsOut, "\nTimer distributions\n");
615 for (int s = 0; s < TIMER_LAST; s++) {
616 statistic const *stat = &theStats[s];
618 if (stat->getCount() != 0) {
619 char tag = timeStat::noUnits(timer_e(s)) ? ' ' : 'T';
621 fprintf(statsOut, "%s\n", timeStat::name(timer_e(s)));
622 fprintf(statsOut, "%s\n", stat->getHist()->format(tag).c_str());
628 void kmp_stats_output_module::printCounterStats(FILE *statsOut,
629 statistic const *theStats) {
630 fprintf(statsOut, "Counter, ThreadCount, Min, Mean, "
631 " Max, Total, SD\n");
632 for (int s = 0; s < COUNTER_LAST; s++) {
633 statistic const *stat = &theStats[s];
634 fprintf(statsOut, "%-25s, %s\n", counter::name(counter_e(s)),
635 stat->format(' ', true).c_str());
637 // Print histogram of counters
638 if (theStats[0].haveHist()) {
639 fprintf(statsOut, "\nCounter distributions\n");
640 for (int s = 0; s < COUNTER_LAST; s++) {
641 statistic const *stat = &theStats[s];
643 if (stat->getCount() != 0) {
644 fprintf(statsOut, "%s\n", counter::name(counter_e(s)));
645 fprintf(statsOut, "%s\n", stat->getHist()->format(' ').c_str());
651 void kmp_stats_output_module::printCounters(FILE *statsOut,
652 counter const *theCounters) {
653 // We print all the counters even if they are zero.
654 // That makes it easier to slice them into a spreadsheet if you need to.
655 fprintf(statsOut, "\nCounter, Count\n");
656 for (int c = 0; c < COUNTER_LAST; c++) {
657 counter const *stat = &theCounters[c];
658 fprintf(statsOut, "%-25s, %s\n", counter::name(counter_e(c)),
659 formatSI(stat->getValue(), 9, ' ').c_str());
663 void kmp_stats_output_module::printEvents(FILE *eventsOut,
664 kmp_stats_event_vector *theEvents,
666 // sort by start time before printing
668 for (int i = 0; i < theEvents->size(); i++) {
669 kmp_stats_event ev = theEvents->at(i);
670 rgb_color color = getEventColor(ev.getTimerName());
671 fprintf(eventsOut, "%d %llu %llu %1.1f rgb(%1.1f,%1.1f,%1.1f) %s\n", gtid,
672 static_cast<unsigned long long>(ev.getStart()),
673 static_cast<unsigned long long>(ev.getStop()),
674 1.2 - (ev.getNestLevel() * 0.2), color.r, color.g, color.b,
675 timeStat::name(ev.getTimerName()));
680 void kmp_stats_output_module::windupExplicitTimers() {
681 // Wind up any explicit timers. We assume that it's fair at this point to just
682 // walk all the explcit timers in all threads and say "it's over".
683 // If the timer wasn't running, this won't record anything anyway.
684 kmp_stats_list::iterator it;
685 for (it = __kmp_stats_list->begin(); it != __kmp_stats_list->end(); it++) {
686 kmp_stats_list *ptr = *it;
687 ptr->getPartitionedTimers()->windup();
692 void kmp_stats_output_module::printPloticusFile() {
694 int size = __kmp_stats_list->size();
695 FILE *plotOut = fopen(plotFileName, "w+");
697 fprintf(plotOut, "#proc page\n"
701 fprintf(plotOut, "#proc getdata\n"
705 fprintf(plotOut, "#proc areadef\n"
706 " title: OpenMP Sampling Timeline\n"
707 " titledetails: align=center size=16\n"
708 " rectangle: 1 1 13 9\n"
709 " xautorange: datafield=2,3\n"
710 " yautorange: -1 %d\n\n",
713 fprintf(plotOut, "#proc xaxis\n"
715 " stubdetails: size=12\n"
716 " label: Time (ticks)\n"
717 " labeldetails: size=14\n\n");
719 fprintf(plotOut, "#proc yaxis\n"
722 " stubdetails: size=12\n"
724 " labeldetails: size=14\n\n",
727 fprintf(plotOut, "#proc bars\n"
728 " exactcolorfield: 5\n"
731 " segmentfields: 2 3\n"
732 " barwidthfield: 4\n\n");
734 // create legend entries corresponding to the timer color
735 for (i = 0; i < TIMER_LAST; i++) {
736 if (timeStat::logEvent((timer_e)i)) {
737 rgb_color c = getEventColor((timer_e)i);
738 fprintf(plotOut, "#proc legendentry\n"
739 " sampletype: color\n"
741 " details: rgb(%1.1f,%1.1f,%1.1f)\n\n",
742 timeStat::name((timer_e)i), c.r, c.g, c.b);
746 fprintf(plotOut, "#proc legend\n"
748 " location: max max\n\n");
753 static void outputEnvVariable(FILE *statsOut, char const *name) {
754 char const *value = getenv(name);
755 fprintf(statsOut, "# %s = %s\n", name, value ? value : "*unspecified*");
758 /* Print some useful information about
759 * the date and time this experiment ran.
760 * the machine on which it ran.
761 We output all of this as stylised comments, though we may decide to parse
763 void kmp_stats_output_module::printHeaderInfo(FILE *statsOut) {
764 std::time_t now = std::time(0);
768 std::strftime(&buffer[0], sizeof(buffer), "%c", std::localtime(&now));
769 fprintf(statsOut, "# Time of run: %s\n", &buffer[0]);
770 if (gethostname(&hostName[0], sizeof(hostName)) == 0)
771 fprintf(statsOut, "# Hostname: %s\n", &hostName[0]);
772 #if KMP_ARCH_X86 || KMP_ARCH_X86_64
773 fprintf(statsOut, "# CPU: %s\n", &__kmp_cpuinfo.name[0]);
774 fprintf(statsOut, "# Family: %d, Model: %d, Stepping: %d\n",
775 __kmp_cpuinfo.family, __kmp_cpuinfo.model, __kmp_cpuinfo.stepping);
776 if (__kmp_cpuinfo.frequency == 0)
777 fprintf(statsOut, "# Nominal frequency: Unknown\n");
779 fprintf(statsOut, "# Nominal frequency: %sz\n",
780 formatSI(double(__kmp_cpuinfo.frequency), 9, 'H').c_str());
781 outputEnvVariable(statsOut, "KMP_HW_SUBSET");
782 outputEnvVariable(statsOut, "KMP_AFFINITY");
783 outputEnvVariable(statsOut, "KMP_BLOCKTIME");
784 outputEnvVariable(statsOut, "KMP_LIBRARY");
785 fprintf(statsOut, "# Production runtime built " __DATE__ " " __TIME__ "\n");
789 void kmp_stats_output_module::outputStats(const char *heading) {
790 // Stop all the explicit timers in all threads
791 // Do this before declaring the local statistics because thay have
792 // constructors so will take time to create.
793 windupExplicitTimers();
795 statistic allStats[TIMER_LAST];
796 statistic totalStats[TIMER_LAST]; /* Synthesized, cross threads versions of
797 normal timer stats */
798 statistic allCounters[COUNTER_LAST];
801 !outputFileName.empty() ? fopen(outputFileName.c_str(), "a+") : stderr;
806 if (eventPrintingEnabled()) {
807 eventsOut = fopen(eventsFileName, "w+");
810 printHeaderInfo(statsOut);
811 fprintf(statsOut, "%s\n", heading);
812 // Accumulate across threads.
813 kmp_stats_list::iterator it;
814 for (it = __kmp_stats_list->begin(); it != __kmp_stats_list->end(); it++) {
815 int t = (*it)->getGtid();
816 // Output per thread stats if requested.
817 if (printPerThreadFlag) {
818 fprintf(statsOut, "Thread %d\n", t);
819 printTimerStats(statsOut, (*it)->getTimers(), 0);
820 printCounters(statsOut, (*it)->getCounters());
821 fprintf(statsOut, "\n");
823 // Output per thread events if requested.
824 if (eventPrintingEnabled()) {
825 kmp_stats_event_vector events = (*it)->getEventVector();
826 printEvents(eventsOut, &events, t);
829 // Accumulate timers.
830 for (timer_e s = timer_e(0); s < TIMER_LAST; s = timer_e(s + 1)) {
831 // See if we should ignore this timer when aggregating
832 if ((timeStat::masterOnly(s) && (t != 0)) || // Timer only valid on master
833 // and this thread is worker
834 (timeStat::workerOnly(s) && (t == 0)) // Timer only valid on worker
835 // and this thread is the master
840 statistic *threadStat = (*it)->getTimer(s);
841 allStats[s] += *threadStat;
843 // Add Total stats for timers that are valid in more than one thread
844 if (!timeStat::noTotal(s))
845 totalStats[s].addSample(threadStat->getTotal());
848 // Accumulate counters.
849 for (counter_e c = counter_e(0); c < COUNTER_LAST; c = counter_e(c + 1)) {
850 if (counter::masterOnly(c) && t != 0)
852 allCounters[c].addSample((*it)->getCounter(c)->getValue());
856 if (eventPrintingEnabled()) {
861 fprintf(statsOut, "Aggregate for all threads\n");
862 printTimerStats(statsOut, &allStats[0], &totalStats[0]);
863 fprintf(statsOut, "\n");
864 printCounterStats(statsOut, &allCounters[0]);
866 if (statsOut != stderr)
870 /* ************* exported C functions ************** */
872 // no name mangling for these functions, we want the c files to be able to get
873 // at these functions
876 void __kmp_reset_stats() {
877 kmp_stats_list::iterator it;
878 for (it = __kmp_stats_list->begin(); it != __kmp_stats_list->end(); it++) {
879 timeStat *timers = (*it)->getTimers();
880 counter *counters = (*it)->getCounters();
882 for (int t = 0; t < TIMER_LAST; t++)
885 for (int c = 0; c < COUNTER_LAST; c++)
888 // reset the event vector so all previous events are "erased"
889 (*it)->resetEventVector();
893 // This function will reset all stats and stop all threads' explicit timers if
894 // they haven't been stopped already.
895 void __kmp_output_stats(const char *heading) {
896 __kmp_stats_global_output->outputStats(heading);
900 void __kmp_accumulate_stats_at_exit(void) {
901 // Only do this once.
902 if (KMP_XCHG_FIXED32(&statsPrinted, 1) != 0)
905 __kmp_output_stats("Statistics on exit");
908 void __kmp_stats_init(void) {
909 __kmp_init_tas_lock(&__kmp_stats_lock);
910 __kmp_stats_start_time = tsc_tick_count::now();
911 __kmp_stats_global_output = new kmp_stats_output_module();
912 __kmp_stats_list = new kmp_stats_list();
915 void __kmp_stats_fini(void) {
916 __kmp_accumulate_stats_at_exit();
917 __kmp_stats_list->deallocate();
918 delete __kmp_stats_global_output;
919 delete __kmp_stats_list;