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https://github.com/rui314/mold.git
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120 lines
2.8 KiB
C++
120 lines
2.8 KiB
C++
#include "common.h"
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#include <functional>
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#include <iomanip>
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#include <ios>
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#ifndef _WIN32
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#include <sys/resource.h>
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#include <sys/time.h>
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#endif
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namespace mold {
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i64 Counter::get_value() {
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return values.combine(std::plus());
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}
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void Counter::print() {
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sort(instances, [](Counter *a, Counter *b) {
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return a->get_value() > b->get_value();
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});
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for (Counter *c : instances)
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std::cout << std::setw(20) << std::right << c->name
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<< "=" << c->get_value() << "\n";
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}
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static i64 now_nsec() {
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return (i64)std::chrono::steady_clock::now().time_since_epoch().count();
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}
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static std::pair<i64, i64> get_usage() {
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#ifdef _WIN32
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auto to_nsec = [](FILETIME t) -> i64 {
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return (((u64)t.dwHighDateTime << 32) + (u64)t.dwLowDateTime) * 100;
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};
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FILETIME creation, exit, kernel, user;
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GetProcessTimes(GetCurrentProcess(), &creation, &exit, &kernel, &user);
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return {to_nsec(user), to_nsec(kernel)};
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#else
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auto to_nsec = [](struct timeval t) -> i64 {
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return (i64)t.tv_sec * 1'000'000'000 + t.tv_usec * 1'000;
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};
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struct rusage ru;
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getrusage(RUSAGE_SELF, &ru);
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return {to_nsec(ru.ru_utime), to_nsec(ru.ru_stime)};
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#endif
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}
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TimerRecord::TimerRecord(std::string name, TimerRecord *parent)
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: name(name), parent(parent) {
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start = now_nsec();
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std::tie(user, sys) = get_usage();
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if (parent)
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parent->children.push_back(this);
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}
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void TimerRecord::stop() {
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if (stopped)
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return;
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stopped = true;
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i64 user2;
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i64 sys2;
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std::tie(user2, sys2) = get_usage();
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end = now_nsec();
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user = user2 - user;
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sys = sys2 - sys;
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}
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static void print_rec(TimerRecord &rec, i64 indent) {
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printf(" % 8.3f % 8.3f % 8.3f %s%s\n",
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((double)rec.user / 1'000'000'000),
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((double)rec.sys / 1'000'000'000),
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(((double)rec.end - rec.start) / 1'000'000'000),
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std::string(indent * 2, ' ').c_str(),
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rec.name.c_str());
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sort(rec.children, [](TimerRecord *a, TimerRecord *b) {
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return a->start < b->start;
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});
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for (TimerRecord *child : rec.children)
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print_rec(*child, indent + 1);
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}
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void print_timer_records(
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tbb::concurrent_vector<std::unique_ptr<TimerRecord>> &records) {
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for (i64 i = records.size() - 1; i >= 0; i--)
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records[i]->stop();
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for (i64 i = 0; i < records.size(); i++) {
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TimerRecord &inner = *records[i];
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if (inner.parent)
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continue;
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for (i64 j = i - 1; j >= 0; j--) {
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TimerRecord &outer = *records[j];
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if (outer.start <= inner.start && inner.end <= outer.end) {
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inner.parent = &outer;
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outer.children.push_back(&inner);
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break;
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}
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}
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}
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std::cout << " User System Real Name\n";
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for (std::unique_ptr<TimerRecord> &rec : records)
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if (!rec->parent)
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print_rec(*rec, 0);
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std::cout << std::flush;
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}
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} // namespace mold
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