review for 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb

Tom Rodriguez tom.rodriguez at
Wed Jun 22 12:32:49 PDT 2011

On Jun 22, 2011, at 12:23 PM, Vladimir Kozlov wrote:

> Is it possible to add an assert in nmethod::preserve_callee_argument_oops() to verify that invokedynamic has a receiver?

Do you mean to verify that the receiver is really a valid oop or something else?


> Otherwise looks good.
> thanks,
> Vladimir
> Tom Rodriguez wrote:
>> 40 lines changed: 6 ins; 0 del; 34 mod; 4861 unchg
>> 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
>> Summary: don't skip receiver when GC'ing compiled invokedynamic callsites
>> Reviewed-by:
>> When GC'ing at a call site during resolution the arguments to the call
>> have to be handled specially.  In most cases the implicit receiver to
>> method handle invoke is ignored but in this case it must be treated as
>> real so that it is properly GC'ed.  Tested with failing test from
>> report.  Also ran jck, regression tests and vm.mlvm tests.
>> I also included a fix to the inline level printing.  For method handle
>> invokes we don't want to count them against MaxInlineLevel and
>> previously this was done by adding a bias to the inline_depth.  This
>> screwed up the indenting making the inlining output unreadable.
>> Instead we should keep the depth count consistent and adjust the max
>> inline level for the subtree.  This is done by keeping that value in
>> the InlineTree.  inline_depth was renamed to inline_level to be
>> consistent with MaxInlineLevel.

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