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std::thread???????

??????C++???????????std::thread??????????????????????????std::thread??????????????

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std::thread???????????????????

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????????????????????????join?detach????????????????????????????????

RAII?????

??????????????ThreadRAII????????????????????

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class ThreadRAII {public:    enum class DtorAction { join, detach };    ThreadRAII(std::thread&& t, DtorAction a)        : action(a), t(std::move(t)) {}    ~ThreadRAII() {        if (t.joinable()) {            if (action == DtorAction::join) {                t.join();            } else {                t.detach();            }        }    }    std::thread& get() { return t; }private:    DtorAction action;    std::thread t;};ThreadRAII::ThreadRAII() = default;ThreadRAII&& operator=(ThreadRAII&& other) = default;

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bool doWork(std::function
   
     filter, int maxVal = 10'000'000) {    std::vector
    
      goodVals;    ThreadRAII t(std::thread{[&filter, maxVal, &goodVals](int i) {        for (int i = 0; i <= maxVal; ++i) {            if (filter(i)) goodVals.push_back(i);        }    }), ThreadRAII::DtorAction::join;    auto nh = t.get().native_handle();    // ... ??????????    if (conditionsAreSatisfied()) {        t.get().join();        performComputation(goodVals);        return true;    }    return false;}
    
   

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??ThreadRAII??????????std::thread??????????????????????????????

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????std::thread????????????RAII???ThreadRAII?????????????????????????????????????????????????????

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