mirror of
https://github.com/TomHarte/CLK.git
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47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
#include "timer.h"
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#include "../../ClockReceiver/TimeTypes.hpp"
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#include <algorithm>
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#include <QDebug>
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Timer::Timer(QObject *parent) : QObject(parent) {
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// Set up the emulation timer. Bluffer's guide: the QTimer will post an
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// event to an event loop. QThread is a thread with an event loop.
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// My class, Timer, will be wired up to receive the QTimer's events.
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timer = std::make_unique<QTimer>(this);
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timer->setInterval(1);
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thread = std::make_unique<QThread>(this);
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moveToThread(thread.get());
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connect(timer.get(), SIGNAL(timeout()), this, SLOT(tick()));
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}
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void Timer::setMachine(MachineTypes::TimedMachine *machine, std::mutex *machineMutex) {
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this->machine = machine;
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this->machineMutex = machineMutex;
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}
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void Timer::tick() {
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const auto now = Time::nanos_now();
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const auto duration = std::min(now - lastTickNanos, int64_t(500'000'000));
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// qDebug() << duration << " [not " << now - lastTickNanos << "]";
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lastTickNanos = now;
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std::lock_guard lock_guard(*machineMutex);
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machine->run_for(double(duration) / 1e9);
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}
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void Timer::start() {
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thread->start();
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timer->start();
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}
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Timer::~Timer() {
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// Stop the timer, then ask the QThread to exit and wait for it to do so.
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timer->stop();
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thread->exit();
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while(thread->isRunning());
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}
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