FRF(S) 8216072: Remove TaskTerminator's assignment operator

[zgu at redhat.com]

On Wed, 2019-01-30 at 17:26 +0100, Roman Kennke wrote:
> Looks good to me!
> 
Thanks, Roman.

-Zhengyu

> Thanks,
> Roman
> 
> > The assignment operator was a workaround for issues since resolved
> > by
> > JDK-8215047, JDK-8215299 and JDK-8215220. It is time to remove it
> > and
> > use ParallelTaskTerminator::reset_for_reuse() instead.
> > 
> > 
> > Bug: https://bugs.openjdk.java.net/browse/JDK-8216072
> > Webrev: http://cr.openjdk.java.net/~zgu/JDK-8216072/webrev.00/index
> > .htm
> > l
> > 
> > 
> > Test:
> > 
> >    hotspot_gc (+/-UseOWSTTaskTerminator) on Linux x64 (fastdebug
> > and
> > release)
> > 
> > Thanks,
> > 
> > -Zhengyu
> >