event/SocketEvent: add comment
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@ -44,6 +44,9 @@ SocketEvent::Close() noexcept
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if (!fd.IsDefined())
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return;
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/* closing the socket automatically unregisters it from epoll,
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so we can omit the epoll_ctl(EPOLL_CTL_DEL) call and save
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one system call */
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if (std::exchange(scheduled_flags, 0) != 0)
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loop.AbandonFD(*this);
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fd.Close();
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