stop using mmap for zip I/O

[Christos Zoulas]

On Feb 26,  2:32pm, xueming.shen at oracle.com (Xueming Shen) wrote:
-- Subject: Re: stop using mmap for zip I/O

| That's true, unfortunately, the mmap does trigger crash here and there....
| 
| There is a property you can define to disable it in later releases
| -Dsun.zip.disableMemoryMapping=true
| 
| There is discussion that maybe we should simply disable the mmap by default ...
| 
| And, there is further plan to simply move the general zip file handling up to
| pure java, without any native code, as the webrev showed below. I'm still
| hoping we can do it in jdk9 later, when everyone is not that busy and can
| help codereview the change. (the webrev might be a little aged)

Thanks a lot! The plan sounds great, as the pure java implementation will
prevent other core-dumps from corrupt zip files...

Best,

christos