RFR: Add asserts all over synchronizer

[Aleksey Shipilev]

On 10/07/2016 11:06 AM, Roman Kennke wrote:
> Am Donnerstag, den 06.10.2016, 19:11 +0200 schrieb Aleksey Shipilev:
>> On 10/06/2016 07:06 PM, Roman Kennke wrote:
>>>
>>> Aleksey pointed out in private that we could just as well make
>>> synchronizer and biasedlocking use oopDesc::cas_set_mark() and then
>>> put
>>> the asserts there and in oopDesc::set_mark() and
>>> oopDesc::release_set_mark(). That should give us better coverage.
>>> So
>>> here it is:
>>>
>>> http://cr.openjdk.java.net/~rkennke/assertsynchronizer/webrev.01/
>>>
>>> Ok now?
>>
>> Yes. Eager to see all those little places where it crashes with
>> Shenandoah. Maybe run TEST="hotspot_all" on Shenandoah/fastdebug
>> before
>> pushing?
> 
> I don't know (yet) how to unconditionally use Shenandoah everywhere.
> JAVA_TOOL_OPTIONS doesn't seem to do it.
> 
> I've run jcstress in sanity mode, and SPECjvm and didn't get any
> asserts. I'd like to push it and run more tests on a big machine. Ok?

Yeah, OK.

-Aleksey