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Copy pathThreadPool.h
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98 lines (83 loc) · 2.81 KB
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#pragma once
#include "Singleton.hpp"
#include <mutex>
#include <condition_variable>
#include <vector>
#include <queue>
#include <functional>
#include <future>
#include <memory>
#include <atomic>
namespace sh::core
{
class ThreadPool : public Singleton<ThreadPool>
{
friend Singleton<ThreadPool>;
public:
SH_CORE_API ~ThreadPool();
SH_CORE_API void Init(uint32_t threadNum);
SH_CORE_API void WaitAllTask();
SH_CORE_API void Lock();
SH_CORE_API void Unlock();
SH_CORE_API auto GetThreads() const -> const std::vector<std::thread>&;
SH_CORE_API auto GetThreadNum() const -> uint32_t;
SH_CORE_API auto IsInit() const -> bool;
template<typename F, typename... Args>
auto AddTask(F&& func, Args&&... args) -> std::future<typename std::invoke_result_t<F, Args...>>;
/// @brief 해당 함수로 작업을 추가하면 동기화 타이밍에 해당 작업이 끝날 때까지 기다리지 않게 한다.
template<typename F, typename... Args>
auto AddContinousTask(F&& func, Args&&... args) -> std::future<typename std::invoke_result_t<F, Args...>>;
protected:
SH_CORE_API ThreadPool();
private:
template<typename F, typename... Args>
auto AddTaskImpl(F&& func, bool bContinous, Args&&... args) -> std::future<typename std::invoke_result_t<F, Args...>>;
private:
std::mutex mu;
std::condition_variable cvTask;
std::condition_variable cvDone;
std::vector<std::thread> threads;
struct Task
{
std::function<void()> fn;
bool bContinous = false;
};
std::queue<Task> tasks;
int counter = 0;
bool bStop = false;
public:
constexpr static uint32_t MAX_THREAD = 16;
};
template<typename F, typename... Args>
auto ThreadPool::AddTask(F&& func, Args&&... args) -> std::future<typename std::invoke_result_t<F, Args...>>
{
return AddTaskImpl(std::forward<F>(func), false, std::forward<Args>(args)...);
}
template<typename F, typename... Args>
auto ThreadPool::AddContinousTask(F&& func, Args&&... args) -> std::future<typename std::invoke_result_t<F, Args...>>
{
return AddTaskImpl(std::forward<F>(func), true, std::forward<Args>(args)...);
}
template<typename F, typename... Args>
auto ThreadPool::AddTaskImpl(F&& func, bool bContinous, Args&&... args) -> std::future<typename std::invoke_result_t<F, Args...>>
{
using ReturnType = typename std::invoke_result_t<F, Args...>;
using PackageType = std::packaged_task<ReturnType()>;
auto packagePtr = new PackageType(std::bind(std::forward<F>(func), std::forward<Args>(args)...));
auto result = packagePtr->get_future();
{
std::lock_guard<std::mutex> lock{ mu };
Task task{};
task.fn =
[packagePtr]()
{
std::unique_ptr<PackageType> uniquePackage{ packagePtr };
(*packagePtr)();
};
task.bContinous = bContinous;
tasks.push(std::move(task));
}
cvTask.notify_one();
return result;
}
}//namespace