ThreadException.h

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#pragma once
 
#include <exception>
#include <mutex>
 
class ThreadException
{
public:
    void capture()
    {
        std::unique_lock<std::mutex> guard{lock_};
        exception_ = std::current_exception();
    }
 
    void rethrow()
    {
        if (exception_)
        {
            std::rethrow_exception(exception_);
        }
    }
 
    explicit operator bool() const noexcept { return exception_ != nullptr; }
 
private:
    std::exception_ptr exception_ = nullptr;
    std::mutex lock_;
};