RFR: 8168914: Crash in ClassLoaderData/JNIHandleBlock::oops_do during concurrent marking

[Erik Helin]

On 02/21/2017 02:57 AM, Kim Barrett wrote:
>> On Feb 20, 2017, at 5:52 PM, David Holmes <david.holmes at oracle.com> wrote:
>>> 02 -> 03:
>>> - Only use load_acquire when reading the size for the "head" chunk
>>
>> Sorry but I don't like the way this is done - the conditional may end up being more expensive than the unnecessary load-acquire. Unrolling the first loop iteration, as per the email discussion, is a better way to go IMO.
>
> +1

David, Kim, please see new patches at:
- inc: http://cr.openjdk.java.net/~ehelin/8168914/03-04/
- full: http://cr.openjdk.java.net/~ehelin/8168914/04/

Thanks,
Erik