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// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <array>
#include <atomic>
#include <functional>
#include <memory>
#include <thread>
#include "common/fiber.h"
#include "common/thread.h"
#include "core/hardware_properties.h"
namespace Common {
class Event;
class Fiber;
} // namespace Common
namespace Core {
class System;
class CpuManager {
public:
explicit CpuManager(System& system_);
CpuManager(const CpuManager&) = delete;
CpuManager(CpuManager&&) = delete;
~CpuManager();
CpuManager& operator=(const CpuManager&) = delete;
CpuManager& operator=(CpuManager&&) = delete;
/// Sets if emulation is multicore or single core, must be set before Initialize
void SetMulticore(bool is_multi) {
is_multicore = is_multi;
}
/// Sets if emulation is using an asynchronous GPU.
void SetAsyncGpu(bool is_async) {
is_async_gpu = is_async;
}
void Initialize();
void Shutdown();
static std::function<void(void*)> GetGuestThreadStartFunc();
static std::function<void(void*)> GetIdleThreadStartFunc();
static std::function<void(void*)> GetShutdownThreadStartFunc();
void* GetStartFuncParameter();
void PreemptSingleCore(bool from_running_enviroment = true);
std::size_t CurrentCore() const {
return current_core.load();
}
private:
static void GuestThreadFunction(void* cpu_manager);
static void GuestRewindFunction(void* cpu_manager);
static void IdleThreadFunction(void* cpu_manager);
static void ShutdownThreadFunction(void* cpu_manager);
void MultiCoreRunGuestThread();
void MultiCoreRunGuestLoop();
void MultiCoreRunIdleThread();
void SingleCoreRunGuestThread();
void SingleCoreRunGuestLoop();
void SingleCoreRunIdleThread();
static void ThreadStart(std::stop_token stop_token, CpuManager& cpu_manager, std::size_t core);
void ShutdownThread();
void RunThread(std::size_t core);
struct CoreData {
std::shared_ptr<Common::Fiber> host_context;
std::jthread host_thread;
};
std::array<CoreData, Core::Hardware::NUM_CPU_CORES> core_data{};
bool is_async_gpu{};
bool is_multicore{};
std::atomic<std::size_t> current_core{};
std::size_t idle_count{};
std::size_t num_cores{};
static constexpr std::size_t max_cycle_runs = 5;
System& system;
};
} // namespace Core
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