RFR (round 2) JDK-8039525: HashTable lookup API needs refactoring

[Gerard Ziemski]

hi all,

Please review this 2nd webrev for a simple enhancement, which renames symbolTable::lookup
API using names that better reflect the method purpose, ie: lookup, lookup_and_add,
lookup_and_hash, lookup_and_add_unicode, lookup_and_hash_unicode and lookup_and_ignore_hash.


The changes since webrev 1:

Re: Christian Thalinger

Dropped the “_only” suffix completely - I decided it was no longer needed after being left
with 1 API using it (ie. lookup_only —> lookup, after dropping it first from lookup_only_and_add)

Re: John Rose

Renamed “probe” into “lookup_and_ignore_hash”. Removed “blank” lines and checked with jcheck

Re: Per Liden

Decided to leave “lookup_and_add” alone, since “lookup_or_add” implies one or the other and seems
even less right. We could have renamed “lookup_and_add” as “lookup_and_add_if_needed”,
but there is no “lookup_and_add_always”, so I simply left it alone - hope that’s OK.


Webrev: http://cr.openjdk.java.net/~gziemski/8039525_rev1
Bug: https://bugs.openjdk.java.net/browse/JDK-8039525

Tested with hotspot jtreg, vm.quicklooks and JPRT. Locally builds on Mac OS X and Linux.

Thank you.