RFR: 8237521: Memory Access API fixes for 32-bit

[Maurizio Cimadamore]

Fixes look good to me - I assume this is for JDK 15, right?

Maurizio

On 22/01/2020 08:43, Nick Gasson wrote:
> Hi,
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8237521
> Webrev: http://cr.openjdk.java.net/~ngasson/8237521/webrev.01/
>
> This is a follow-up to JDK-8236634 which just contained changes to the 
> tests to make them build/pass on 32-bit systems for JDK 14. This patch 
> removes the test workarounds and fixes two things to make them pass:
>
> * In Unsafe_AllocateMemory0 handle the case where the aligned-up size 
> overflows a 32-bit size_t and throw an OutOfMemoryError instead of 
> calling os::malloc(0).
>
> * Change the value of Utils.MAX_ALIGN from 16 to 8 on 32-bit systems, 
> as malloc can return addresses that are only 8-byte aligned.
>
> Tested jdk_foreign on x86_32, arm32, aarch64, x86_64.
>
>
> Thanks,
> Nick