91 lines
1.7 KiB
C++
91 lines
1.7 KiB
C++
// Copyright 2018 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <atomic>
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#include <condition_variable>
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#include <cstddef>
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#include <memory>
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#include <mutex>
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#include "common/common_types.h"
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namespace Kernel {
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class Scheduler;
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}
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namespace Core {
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class ARM_Interface;
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class ExclusiveMonitor;
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constexpr unsigned NUM_CPU_CORES{4};
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class CpuBarrier {
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public:
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bool IsAlive() const {
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return !end;
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}
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void NotifyEnd();
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bool Rendezvous();
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private:
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unsigned cores_waiting{NUM_CPU_CORES};
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std::mutex mutex;
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std::condition_variable condition;
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std::atomic<bool> end{};
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};
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class Cpu {
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public:
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Cpu(ExclusiveMonitor& exclusive_monitor, CpuBarrier& cpu_barrier, std::size_t core_index);
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~Cpu();
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void RunLoop(bool tight_loop = true);
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void SingleStep();
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void PrepareReschedule();
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ARM_Interface& ArmInterface() {
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return *arm_interface;
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}
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const ARM_Interface& ArmInterface() const {
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return *arm_interface;
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}
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Kernel::Scheduler& Scheduler() {
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return *scheduler;
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}
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const Kernel::Scheduler& Scheduler() const {
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return *scheduler;
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}
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bool IsMainCore() const {
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return core_index == 0;
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}
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std::size_t CoreIndex() const {
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return core_index;
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}
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static std::unique_ptr<ExclusiveMonitor> MakeExclusiveMonitor(std::size_t num_cores);
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private:
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void Reschedule();
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std::unique_ptr<ARM_Interface> arm_interface;
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CpuBarrier& cpu_barrier;
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std::unique_ptr<Kernel::Scheduler> scheduler;
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std::atomic<bool> reschedule_pending = false;
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std::size_t core_index;
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};
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} // namespace Core
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