RFR 8235678: Remove unnecessary calls to Thread::current() in MutexLocker calls

[Lois Foltan]

On 1/14/2020 9:00 AM, Harold Seigel wrote:
> Hi,
>
> Please review this small change, to reduce unnecessary calls to 
> Thread::current() in MutexLocker calls, by passing the current thread 
> as an argument.  A few ResoureMark declarations were also changed.
>
> Open Webrev: 
> http://cr.openjdk.java.net/~hseigel/bug_8235678/webrev/index.html
>
> JBS Bug: https://bugs.openjdk.java.net/browse/JDK-8235678
>
> The fix was regression tested by running Mach5 tiers 1 and 2 tests and 
> builds on Linux-x64, Solaris, Windows, and Mac OS X, by running Mach5 
> tiers 3-5 tests on Linux-x64, and JCK lang and VM tests on Linux-x64.
>
> Thanks, Harold
>

Overall looks great.  One comment:

- prims/methodHandles.cpp
line #1507: Curious to know why you use "THREAD" and the MutexLocker mu1 
at line #1502 uses "thread"?

Thanks,
Lois