How does Chrome knows when Flash crashed?

unfortunately many times the Flash plugin at Google's Chrome crashes. But fortunately, they just present a message box and a sad face.

My question is, how do they do it? my first thought is that they use structured exception handling but the开发者_如何学Pythonn again, how they know its Flash that crashed?

thanks for any ideas! Lior

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Chrome runs plugins in an entirely separate process from the rest of the page.

If the process ever crashes or locks up, then the plugin must be dead.

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they run it in a separate process. when the child process terminates, the parent is notified by the operating system. the parent can then query the system about the nature of the termination.