关闭钩子可以依赖另一个线程吗？
在关闭挂钩方法中，我需要它向另一个进程发送消息以表明它已关闭。我当前的消息处理代码要求将消息写入队列，该队列由另一个线程处理并发送到它要去的任何地方。在这种情况下，由另一个线程写入管道文件。
在关闭钩子中，我可以保证这些线程仍然在运行吗？我有几个关闭挂钩，但这些都是为了处理不需要其他线程的其他事情。
执行是最小的。它将运行大约 15 行代码以及写入文件所需的任何等待，这也应该是最少的。
In a shutdown hook method, I need it to send a message to another process to say it has shutdown. My current message handling code requires that the message be written into a queue, this queue is processed by another thread and sent on to wherever it is going. In this case, to be written into a pipe file by another thread.
In a shutdown hook, can I guarantee that these threads will still be running? I have several shutdown hooks but these are all to handle other things that don't need other threads.
The execution is minimal. It will run about 15 lines of code + any wait needed to write into the file which should also be minimal.
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来自 addShutdownHook：
“请注意，守护线程将在关闭序列期间继续运行，如果通过调用 exit 方法启动关闭，则非守护线程也会继续运行。”< /em>
鉴于此，我想说可以安全地假设您的线程仍将运行并且您能够与其通信。我唯一要警告的是不要依赖以确定性顺序运行的关闭挂钩。
From the Javadoc description of addShutdownHook:
"Note that daemon threads will continue to run during the shutdown sequence, as will non-daemon threads if shutdown was initiated by invoking the exit method."
Given this I would say that it is safe to assume that your thread will still be running and that you're able to communicate with it. Only thing I would warn against is relying on your shut-down hooks running in a deterministic order.
听起来您需要一个多步骤的关闭过程。在多线程环境中，我不会指望简单地评估您需要执行的代码行，以便为您提供有关关闭过程的指导......
It sounds like you need a multi-step shutdown process. In a multithreaded environment, I wouldn't count on simply evaluating the lines of codes you need to execute in order to give you guidance on your shutdown procedure...