RFR: 8212663: Remove conservative at_safepoint assert when JFR writes type sets during class unloading

[Erik Österlund]

Hi Coleen,

Thanks for the review.

/Erik

On 2018-10-18 17:55, coleen.phillimore at oracle.com wrote:
> Okay. do_unloading is currently called from only one thread.
> thanks,
> Coleen
>
> On 10/18/18 11:00 AM, Erik Österlund wrote:
>> Hi,
>>
>> JFR writes type sets during class unloading. It currently asserts 
>> this is done in a safepoint. But in fact, it suffices that it is done 
>> by a single thread. This assert needs to be relaxed for concurrent 
>> class unloading.
>>
>> Webrev:
>> http://cr.openjdk.java.net/~eosterlund/8212663/webrev.00/
>>
>> Bug:
>> https://bugs.openjdk.java.net/browse/JDK-8212663
>>
>> Thanks,
>> /Erik
>