80 lines
2.7 KiB
C++
80 lines
2.7 KiB
C++
#include <glog/logging.h>
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#include <iomanip>
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#include "usage.h"
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namespace fireusage {
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namespace {
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std::chrono::nanoseconds TvToNs(const timeval& tv) {
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return std::chrono::seconds(tv.tv_sec) +
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std::chrono::microseconds(tv.tv_usec);
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}
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} // namespace
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void UsageTracker::AddEvents(uint64_t num) { events_ += num; }
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void UsageTracker::AddEvent() { events_ += 1; }
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void UsageTracker::Start() {
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CHECK(!running_);
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running_ = true;
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PCHECK(getrusage(RUSAGE_THREAD, &start_usage_) == 0);
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start_time_ = std::chrono::steady_clock::now();
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}
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void UsageTracker::Stop() {
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CHECK(running_);
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running_ = false;
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const auto end_time = std::chrono::steady_clock::now();
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rusage end_usage;
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PCHECK(getrusage(RUSAGE_THREAD, &end_usage) == 0);
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wall_time_ += end_time - start_time_;
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user_time_ += TvToNs(end_usage.ru_utime) - TvToNs(start_usage_.ru_utime);
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sys_time_ += TvToNs(end_usage.ru_stime) - TvToNs(start_usage_.ru_stime);
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vol_ctxt_sw_ += end_usage.ru_nvcsw - start_usage_.ru_nvcsw;
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invol_ctxt_sw_ += end_usage.ru_nivcsw - start_usage_.ru_nivcsw;
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}
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void UsageTracker::Log(const std::string_view& title) {
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if (!title.empty()) {
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// Need to do this here so --vmodule works properly
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VLOG(1) << title << ":";
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}
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VLOG(1) << "\t events: " << std::setw(19) << std::setfill(' ')
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<< events_;
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VLOG(1) << "\t wall time: " << std::setw(19) << std::setfill(' ')
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<< wall_time_.count() << "ns";
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VLOG(1) << "\t user time: " << std::setw(19) << std::setfill(' ')
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<< user_time_.count() << "ns ("
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<< ((user_time_ * 100) / (user_time_ + sys_time_)) << "%)";
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VLOG(1) << "\t sys time: " << std::setw(19) << std::setfill(' ')
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<< sys_time_.count() << "ns ("
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<< ((sys_time_ * 100) / (user_time_ + sys_time_)) << "%)";
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VLOG(1) << "\t vol ctxt sw: " << std::setw(19) << std::setfill(' ')
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<< vol_ctxt_sw_;
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VLOG(1) << "\t invol ctxt sw: " << std::setw(19) << std::setfill(' ')
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<< invol_ctxt_sw_;
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if (events_) {
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VLOG(1) << "\t wall time / event: " << std::setw(19) << std::setfill(' ')
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<< (wall_time_ / events_).count() << "ns";
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VLOG(1) << "\t user time / event: " << std::setw(19) << std::setfill(' ')
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<< (user_time_ / events_).count() << "ns";
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VLOG(1) << "\t sys time / event: " << std::setw(19) << std::setfill(' ')
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<< (sys_time_ / events_).count() << "ns";
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VLOG(1) << "\t vol ctxt sw / event: " << std::setw(19) << std::setfill(' ')
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<< (vol_ctxt_sw_ / events_);
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VLOG(1) << "\tinvol ctxt sw / event: " << std::setw(19) << std::setfill(' ')
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<< (invol_ctxt_sw_ / events_);
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}
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}
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} // namespace fireusage
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