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#pragma once
#include <utility>
class Work;
#if __cpp_lib_semaphore
# include <deque>
# include <memory>
# include <mutex>
# include <semaphore>
# include <special_members.hpp>
# include <thread>
# include <vector>
class Worker {
public:
Worker();
~Worker();
NO_COPY(Worker);
NO_MOVE(Worker);
using WorkPtr = std::unique_ptr<Work>;
template<typename T, typename... Params>
void
addWork(Params &&... params)
requires std::is_base_of_v<Work, T>
{
addWork(std::make_unique<T>(std::forward<Params>(params)...));
}
void addWork(WorkPtr w);
private:
void worker();
using Threads = std::vector<std::thread>;
using ToDo = std::deque<WorkPtr>;
Threads threads;
ToDo todo;
std::counting_semaphore<16> todoLen;
std::mutex todoMutex;
};
#else
class Worker {
public:
template<typename T, typename... Params>
void
addWork(Params &&... params)
requires std::is_base_of_v<Work, T>
{
T(std::forward<Params>(params)...).doWork();
}
};
#endif
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