mirror of https://github.com/rusefi/rusefi.git
72 lines
1.5 KiB
C++
72 lines
1.5 KiB
C++
#include "pch.h"
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#include "timer.h"
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void Timer::reset() {
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m_lastReset = getTimeNowNt();
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}
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void Timer::reset(efitick_t nowNt) {
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m_lastReset = nowNt;
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}
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bool Timer::hasElapsedSec(float seconds) const {
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return hasElapsedMs(seconds * 1000);
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}
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bool Timer::hasElapsedMs(float milliseconds) const {
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return hasElapsedUs(milliseconds * 1000);
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}
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bool Timer::hasElapsedUs(float microseconds) const {
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auto delta = getTimeNowNt() - m_lastReset;
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// If larger than 32 bits, timer has certainly expired
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if (delta >= UINT32_MAX) {
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return true;
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}
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auto delta32 = (uint32_t)delta;
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return delta32 > USF2NT(microseconds);
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}
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float Timer::getElapsedSeconds() const {
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return getElapsedSeconds(getTimeNowNt());
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}
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float Timer::getElapsedSeconds(efitick_t nowNt) const {
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return 1 / US_PER_SECOND_F * getElapsedUs(nowNt);
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}
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float Timer::getElapsedUs() const {
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return getElapsedUs(getTimeNowNt());
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}
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float Timer::getElapsedUs(efitick_t nowNt) const {
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auto deltaNt = nowNt - m_lastReset;
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// Yes, things can happen slightly in the future if we get a lucky interrupt between
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// the timestamp and this subtraction, that updates m_lastReset to what's now "the future",
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// resulting in a negative delta.
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if (deltaNt < 0) {
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return 0;
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}
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if (deltaNt > UINT32_MAX - 1) {
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deltaNt = UINT32_MAX - 1;
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}
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auto delta32 = (uint32_t)deltaNt;
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return NT2US(delta32);
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}
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float Timer::getElapsedSecondsAndReset(efitick_t nowNt) {
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float result = getElapsedSeconds(nowNt);
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reset(nowNt);
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return result;
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}
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