RFR: 6445283: ProgressMonitorInputStream not large file aware (>2GB) [v2]

[Prasanta Sadhukhan]

On Fri, 22 Jul 2022 19:54:59 GMT, Phil Race <prr at openjdk.org> wrote:

> Before although it would jump to zero it would continue to increment and so the user would know something is happening. Now it just gets to max and looks "stuck".

Actually, the progressbar will be **blank** as ProgressMonitorInputStream will call `setProgress(nread+=nr)` ie with -ve value due to integer overflow so progress bar will not be 0 but somewhat (-)2147483125 so **we will not see any increment** also in the progressbar till it reaches 0 from such -ve value

I guess it will be weird to jump back from 99% to ~50% and start again in the same progress monitor (not sure if it's possible also as we support int and not long)
so
I modified the fix to recalculate the available size after MAX_INT is read and close the current progress monitor and recreate another progress monitor with recalculated max and show the progress from MAX_INT onwards to EOF.

> BTW I don't see why you need a large file for a test. You can just have an InputStream subclass which keeps generating data ..

I have added a test.

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PR: https://git.openjdk.org/jdk/pull/9588