pineapple-src/src/core/cpu_manager.h

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2020-12-28 16:15:37 +01:00
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#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:
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explicit CpuManager(System& system_);
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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
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void SetMulticore(bool is_multi) {
is_multicore = is_multi;
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}
/// Sets if emulation is using an asynchronous GPU.
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void SetAsyncGpu(bool is_async) {
is_async_gpu = is_async;
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}
void Initialize();
void Shutdown();
void Pause(bool paused);
static std::function<void(void*)> GetGuestThreadStartFunc();
static std::function<void(void*)> GetIdleThreadStartFunc();
static std::function<void(void*)> GetSuspendThreadStartFunc();
void* GetStartFuncParamater();
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 SuspendThreadFunction(void* cpu_manager);
void MultiCoreRunGuestThread();
void MultiCoreRunGuestLoop();
void MultiCoreRunIdleThread();
void MultiCoreRunSuspendThread();
void MultiCorePause(bool paused);
void SingleCoreRunGuestThread();
void SingleCoreRunGuestLoop();
void SingleCoreRunIdleThread();
void SingleCoreRunSuspendThread();
void SingleCorePause(bool paused);
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static void ThreadStart(std::stop_token stop_token, CpuManager& cpu_manager, std::size_t core);
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void RunThread(std::stop_token stop_token, std::size_t core);
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struct CoreData {
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std::shared_ptr<Common::Fiber> host_context;
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std::unique_ptr<Common::Event> enter_barrier;
std::unique_ptr<Common::Event> exit_barrier;
std::atomic<bool> is_running;
std::atomic<bool> is_paused;
std::atomic<bool> initialized;
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std::jthread host_thread;
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};
std::atomic<bool> running_mode{};
std::atomic<bool> paused_state{};
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{};
static constexpr std::size_t max_cycle_runs = 5;
System& system;
};
} // namespace Core