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 | #pragma once
#include <util/system/thread.h>
#include <util/system/defaults.h>
#include <util/generic/ptr.h>
//deprecated. use future.h instead
template <class T>
class TThreadable: public T {
public:
    using TThreadProc = TThread::TThreadProc;
    inline TThreadable()
        : Arg(nullptr)
        , ThreadInit(nullptr)
    {
    }
    inline int Run(void* arg = nullptr, size_t stackSize = 0, TThreadProc init = DefInit) {
        if (Thread_) {
            return 1;
        }
        Arg = arg;
        ThreadInit = init;
        try {
            THolder<TThread> thread(new TThread(TThread::TParams(Dispatch, this, stackSize)));
            thread->Start();
            Thread_.Swap(thread);
        } catch (...) {
            return 1;
        }
        return 0;
    }
    inline int Join(void** result = nullptr) {
        if (!Thread_) {
            return 1;
        }
        try {
            void* ret = Thread_->Join();
            if (result) {
                *result = ret;
            }
            Thread_.Destroy();
            return 0;
        } catch (...) {
        }
        return 1;
    }
protected:
    static TThreadable<T>* This(void* ptr) {
        return (TThreadable<T>*)ptr;
    }
    static void* Dispatch(void* ptr) {
        void* result = This(ptr)->ThreadInit(This(ptr)->Arg);
        return result ? result : (void*)(size_t)This(ptr)->T::Run(This(ptr)->Arg);
    }
    static void* DefInit(void*) {
        return nullptr;
    }
public:
    void* Arg;
    TThreadProc ThreadInit;
private:
    THolder<TThread> Thread_;
};
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