65 lines
2.3 KiB
C++
65 lines
2.3 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) + 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) {
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events_ += num;
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}
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void UsageTracker::AddEvent() {
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events_ += 1;
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}
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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() {
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VLOG(1) << "usage:";
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VLOG(1) << "\t events: " << std::setw(19) << std::setfill(' ') << events_;
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VLOG(1) << "\t wall time: " << std::setw(19) << std::setfill(' ') << wall_time_.count() << "ns";
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VLOG(1) << "\t user time: " << std::setw(19) << std::setfill(' ') << user_time_.count() << "ns";
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VLOG(1) << "\t sys time: " << std::setw(19) << std::setfill(' ') << sys_time_.count() << "ns";
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VLOG(1) << "\t vol ctxt sw: " << std::setw(19) << std::setfill(' ') << vol_ctxt_sw_;
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VLOG(1) << "\t invol ctxt sw: " << std::setw(19) << std::setfill(' ') << invol_ctxt_sw_;
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VLOG(1) << "\t wall time / event: " << std::setw(19) << std::setfill(' ') << (wall_time_ / events_).count() << "ns";
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VLOG(1) << "\t user time / event: " << std::setw(19) << std::setfill(' ') << (user_time_ / events_).count() << "ns";
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VLOG(1) << "\t sys time / event: " << std::setw(19) << std::setfill(' ') << (sys_time_ / events_).count() << "ns";
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VLOG(1) << "\t vol ctxt sw / event: " << std::setw(19) << std::setfill(' ') << (vol_ctxt_sw_ / events_);
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VLOG(1) << "\tinvol ctxt sw / event: " << std::setw(19) << std::setfill(' ') << (invol_ctxt_sw_ / events_);
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}
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} // namespace fireusage
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