Review request for 6829503
forax at univ-mlv.fr
Sat Apr 18 13:20:29 UTC 2009
Xueming Shen a écrit :
> Two use scenarios
> (1) jvm is being terminated "abnormally" during a password reading
> operation (during "normal" application
> operation), in which the echo is in "off" mode when these shutdown
> hooks start to be invoked. Without
> the "console restore first", application hooks probably can do nothing
> with the stdin/console
> (2)Application hooks use Console.readPassword() and then be terminated
> "abnormally" during the reading,
> in which the echo mode is kept in "off" mode and will not be restored
> after app exits.
> The reason the console hook was/is added to run first is we weighed
> the first scenario as a more likely
> scenario in real world application. Note, the Console echo mode is not
> required to be "restored" if the
> reading operation finishes normally.
> Maybe we can consider to run the console hook again (if the hook is
> set) after the application hooks?
The other solution is to provide a way in the API to test if shutdown hooks
have been started or not.
In that case, all application codes that start a shutdown hook like
can check if shudown hooks run or not and throw a runtime exception
if shutdown hook run.
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