RFR 8174954: Parameter target type is allowed access after a module read edge or a package export has occurred after failed resolution

[harold seigel]

Hi,

Please review this new JDK-10 fix for bug JDK-8174954.  If the initial 
resolution attempt fails with a LinkageError exception then the fix 
saves the exception in the resolution_errors table and sets a flag in 
the constant pool Cache, indicating the failure.  Subsequent attempts to 
do the same resolution will see that the flag is set, retrieve the 
exception from the resolution_errors table, and throw it, instead of 
re-trying the resolution.

The fix also prevents a race condition if two or more threads try to do 
the same resolution concurrently.  When a thread tries to record the 
result of its resolution attempt, it will check to see if another thread 
recorded its result first.  If so, then it will use the result recorded 
by the other thread.  Otherwise, it will record and use its result.  
Access to the resolution result is protected by the 
'resolved_references' lock.

Open webrev: http://cr.openjdk.java.net/~hseigel/bug_8174954.1/webrev/

JBS Bug: https://bugs.openjdk.java.net/browse/JDK-8174954

The fix was tested with the JCK Lang and VM tests, the JTreg hotspot, 
java/io, java/lang, java/util, and other tests, the co-located NSK 
tests, JPRT, with Mach5 tier2 - tier5 tests, and by hand to check race 
condition handling.

Thanks, Harold