Re: [9] RFR(S): 8005873: JRuby test_respond_to.rb asserts with: MT-unsafe modification of inline cache

On May 16, 2014, at 4:56 AM, Tobias Hartmann <tobias.hartmann@oracle.com> wrote:

Is it sufficient then to use synchronized (lambdaForms) { ... } in setCachedLambdaForm(..) and a normal read in cachedLambdaForm(..)?

Yes, that is how I see it. The fast path is a racy non-volatile read of a safely-published structure. (If safe publication via arrays were broken, java.lang.String would be broken. But the JMM is carefully designed to support safe publication of array elements, and through array elements.) — John