[RFR] (XS) 8087153: EXCEPTION_ACCESS_VIOLATION when CDS RO section vanished on win32

[Daniel D. Daugherty]

On 6/19/15 3:35 PM, Chris Plummer wrote:
> Please review the following fix for 8087153:
>
> http://spiro.us.oracle.com/~cplummer/webrevs/8087153/webrev.00/webrev.hotspot/ 
>
> https://bugs.openjdk.java.net/browse/JDK-8087153

Chris, the above webrev URL won't work for OpenJDK reviews. Please copy
your webrev to your space on cr.openjdk.java.net.

src/share/vm/memory/filemap.cpp
     No comments.

Thumbs up!

Dan



>
> This bug was introduced by the changes for 8054386, which mapped the 
> archive RW even if RO was requested. The state of the 
> space_info->read_only was not reflecting this, causing an unnecessary 
> attempt to remap to RW later on when a method's bytecodes were 
> rewritten. This remap exposed a race condition on win32.
>
> Since the changes are small, they will be committed once they are 
> approved.
>
> thanks,
>
> Chris