c34efbbd60
This will always outlive the Cpu instances, since it's destroyed after we destroy the Cpu instances on shutdown, so there's no need for shared ownership semantics here.
87 lines
1.7 KiB
C++
87 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(std::shared_ptr<ExclusiveMonitor> exclusive_monitor, CpuBarrier& cpu_barrier,
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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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const std::shared_ptr<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::shared_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::shared_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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