Windows在应用程序崩溃时关闭内核句柄所需的时间
[英]how long it takes for kernel handles to close by Windows when an application crashes
问题描述
I know Windows close kernel handles when an application crashes, but if I want to wait on this event, can I be sure it will happen in milisec or it might take a while? 
我知道Windows关闭内核会在应用程序崩溃时进行处理，但是如果我想等待此事件，可以确定它会在毫秒内发生还是会花费一些时间？ I would like to trigger a new function the moment one application is crashed and I'm checking if this handle is NULL but it seems like I can't get a NULL value in this case. 我想在一个应用程序崩溃时触发一个新函数，并且我正在检查此句柄是否为NULL，但在这种情况下似乎无法获得NULL值。
2 个解决方案
解决方案1
2 2010-05-17 14:12:34
How long it will take may vary depending upon many factors including implementation, type of crash, etc. It might take awhile. 所需的时间可能取决于许多因素，包括实现，崩溃类型等。它可能需要一段时间。
If you want to know when a process has crashed, you should set up a "watchdog" thread or process that waits on the application's Process Handle , using a function such as WaitForSingleObject . 如果您想知道某个进程何时崩溃，则应该使用诸如WaitForSingleObject之类的函数来设置一个“看门狗”线程或等待应用程序的Process Handle的进程 。 When the process dies, the event will be signaled and you can act accordingly. 流程结束后，将发出事件信号，您可以采取相应措施。
解决方案2
0 2010-05-17 18:16:59
Windows does not close handles when an application "crashes" - it closes them when the process terminates, no matter how the process terminates. 当应用程序“崩溃”时，Windows不会关闭句柄-进程终止时，无论进程如何终止，Windows都会关闭句柄。 By the time this happens the variables don't exist any more because the user mode address space has been shut down. 到这种情况发生时，变量已不存在，因为用户模式地址空间已关闭。
What are you trying to do? 你想做什么？
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