RFR: 8148507: [JVMCI] mitigate deadlocks related to JVMCI compiler under -Xbatch

[David Holmes]

On 6/02/2016 2:34 AM, Christian Thalinger wrote:
> Looks good to me.  David, any comments?

Just two observations:

1. The methods_compiler counter could overflow. That won't affect the 
progress check but I don't know if it impacts any other code that uses it.

2. wait_for_jvmci_completion can still fail to return for arbitrarily 
long periods of time if compilation progresses but at a very slow rate.

Thanks,
David

>> On Feb 4, 2016, at 12:36 PM, Doug Simon <doug.simon at oracle.com> wrote:
>>
>> I’ve updated the webrev in situ for reasons discussed here:
>>
>> https://bugs.openjdk.java.net/browse/JDK-8148507?focusedCommentId=13896252&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13896252
>>
>>
>>> On 03 Feb 2016, at 20:42, Christian Thalinger <christian.thalinger at oracle.com> wrote:
>>>
>>> There was some discussion in the bug report but I seems like we are going to integrate this change.
>>>
>>>> On Jan 31, 2016, at 5:48 AM, Christian Thalinger <christian.thalinger at oracle.com> wrote:
>>>>
>>>> Looks good.
>>>>
>>>>> On Jan 29, 2016, at 4:34 PM, Doug Simon <doug.simon at oracle.com> wrote:
>>>>>
>>>>> Please review this small change to further mitigate deadlocks that can be caused by JVMCI when BackgroundCompilation is disabled.
>>>>>
>>>>> https://bugs.openjdk.java.net/browse/JDK-8148507
>>>>> http://cr.openjdk.java.net/~dnsimon/8148507
>>>>>
>>>>> -Doug
>>>>
>>>
>>
>