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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <condition_variable>
#include <memory>
#include <mutex>
#include <string>
#include "common/common_types.h"
class ARM_Interface;
namespace Kernel {
class Scheduler;
}
namespace Core {
constexpr unsigned NUM_CPU_CORES{4};
class CpuBarrier {
public:
void Rendezvous() {
std::unique_lock<std::mutex> lock(mutex);
--cores_waiting;
if (!cores_waiting) {
cores_waiting = NUM_CPU_CORES;
condition.notify_all();
return;
}
condition.wait(lock);
}
private:
unsigned cores_waiting{NUM_CPU_CORES};
std::mutex mutex;
std::condition_variable condition;
};
class Cpu {
public:
Cpu(std::shared_ptr<CpuBarrier> cpu_barrier, size_t core_index);
void RunLoop(bool tight_loop = true);
void SingleStep();
void PrepareReschedule();
ARM_Interface& CPU() {
return *arm_interface;
}
Kernel::Scheduler& Scheduler() {
return *scheduler;
}
bool IsMainCore() const {
return core_index == 0;
}
private:
void Reschedule();
std::shared_ptr<ARM_Interface> arm_interface;
std::shared_ptr<CpuBarrier> cpu_barrier;
std::unique_ptr<Kernel::Scheduler> scheduler;
bool reschedule_pending{};
size_t core_index;
};
} // namespace Core
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