forked from OSchip/llvm-project
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
//===-- Timer.cpp -----------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "Timer.h"
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#include <assert.h>
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using namespace lldb_perf;
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TimeGauge::TimeType TimeGauge::Now() { return high_resolution_clock::now(); }
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TimeGauge::TimeGauge() : m_start(), m_state(TimeGauge::State::eNeverUsed) {}
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void TimeGauge::Start() {
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m_state = TimeGauge::State::eCounting;
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m_start = Now();
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}
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double TimeGauge::Stop() {
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m_stop = Now();
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assert(m_state == TimeGauge::State::eCounting &&
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"cannot stop a non-started clock");
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m_state = TimeGauge::State::eStopped;
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m_delta = duration_cast<duration<double>>(m_stop - m_start).count();
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return m_delta;
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}
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double TimeGauge::GetStartValue() const {
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return (double)m_start.time_since_epoch().count() *
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(double)system_clock::period::num / (double)system_clock::period::den;
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}
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double TimeGauge::GetStopValue() const {
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return (double)m_stop.time_since_epoch().count() *
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(double)system_clock::period::num / (double)system_clock::period::den;
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}
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double TimeGauge::GetDeltaValue() const {
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assert(m_state == TimeGauge::State::eStopped &&
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"clock must be used before you can evaluate it");
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return m_delta;
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}
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