4243978: (ref) Race condition in Reference.enqueue() 4268317: (ref) Reference.isEnqueued() can return true when instance not enqueued Summary: The reference handler now declares, and assumes, that the discovered field, rather than the next field, is (to be) used to link the entries in the pending list, thus allowing a reference object to be safely enqueued even while it is in the pending state. Also added slightly modified regression tests from the two bug reports. Reviewed-by: mchung, alanb, jcoomes

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README:

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  This file should be located at the top of the hotspot Mercurial repository.

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  See http://openjdk.java.net/ for more information about the OpenJDK.

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  See ../README-builds.html for complete details on build machine requirements.

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Simple Build Instructions:

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    cd make && gnumake

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  The files that will be imported into the jdk build will be in the "build"

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  directory.

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