[9] RFR (S): 8058892: FILL_ARRAYS and ARRAYS are eagely initialized in MethodHandleImpl

Vladimir Ivanov vladimir.x.ivanov at oracle.com
Thu Oct 2 16:55:12 UTC 2014

Small update:

Need to reorder initialization sequence in MHI.Lazy. Initialized 
FILL_ARRAYS and ARRAYS are required for later MH lookups.

Additional testing:
   * jck (api/java_lang/invoke)
   * jdk/java/lang/invoke, jdk/java/util/streams w/ "-ea -esa" and 

Best regards,
Vladimir Ivanov

On 10/2/14, 7:52 PM, Vladimir Ivanov wrote:
> http://cr.openjdk.java.net/~vlivanov/8058892/webrev.00/
> https://bugs.openjdk.java.net/browse/JDK-8058892
> Core j.l.i classes are preloaded during VM startup in order to avoid
> possible deadlock when accessing JSR292-related functionality from
> multiple threads. After LF sharing-related changes, FILL_ARRAYS and
> ARRAYS are initialized too early. It affects startup time & footprint of
> applications that don't use JSR292.
> The fix is to move these fields into MHI.Lazy class, thus delaying their
> initialization to the first usage of JSR292 API.
> Testing: failing test, manual (measured HelloWorld app startup time;
> compared -XX:+PrintCompilation logs)
> Best regards,
> Vladimir Ivanov

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