46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
#include "../headers/cpu.h"
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void cpu::start() {
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if (running) return;
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running = true;
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nitUre = std::thread(&cpu::zankaUre, this);
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}
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void cpu::stop() {
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running = false;
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if (nitUre.joinable())
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nitUre.join();
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}
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bool cpu::isRunning() {
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return running.load();
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}
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int cpu::getSpeed() {
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return hitrostKhz;
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}
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void cpu::setSpeed(int speedKhz) {
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if (speedKhz < 1) speedKhz = 1;
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hitrostKhz = speedKhz;
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}
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void cpu::zankaUre() {
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while (running) {
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// 1. Izvedemo določeno št. ukazov na tick
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for (int i = 0; i < operacijeNaTick; i++) {
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cpu::m->execute();
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}
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// 2. Izračunamo kolikokrat mora "tikati" na sekundo
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// speed_kHz = n tisoč ukazov / sekundo
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// operacijeNaTick = koliko ukazov na en tik
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// ticksPerSecond = (hitrostKhz * 1000) / operacijeNaTick
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double ticksPerSecond = (hitrostKhz * 1000.0) / operacijeNaTick;
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double sleepTimeSec = 1.0 / ticksPerSecond;
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// 3. Ustavimo nit za izračunani čas
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std::this_thread::sleep_for(std::chrono::duration<double>(sleepTimeSec));
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}
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}
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