Please review: 6541756: Reduce executable C-heap

[Coleen Phillimore - Sun Microsystems]

I have changed the code a bit and would like another code review.  
Microsoft docs say that you should set executable permissions for 
allocated memory with VirtualProtect, rather than VirtualAlloc so we 
only need to set the execute permissions when committing memory.  Also 
added comments and did more testing.  New webrev:

http://cr.openjdk.java.net/~coleenp/6541756.2/

Could someone from the linux community check out the os_linux.cpp changes?
Thanks!
Coleen

On 03/23/09 20:30, Coleen Phillimore wrote:
> Summary: Add executable parameters to reserve_memory and commit_memory 
> to reduce executable memory to only the Code Heap.
>
> Tested this on solaris, linux (ubuntu) and windows Vista (with nx 
> AlwaysOn)
>
> Webrev:
> http://cr.openjdk.java.net/~coleenp/6541756/
> Bug:
> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6541756
>
> Thanks,
> Coleen