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  1. JDK
  2. JDK-8221539

[metaspace] Improve MetaspaceObj::is_metaspace_obj() and friends

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        There are several functions which, given an unknown pointer assumed to be a metaspace object, check if the pointer is indeed a metaspace object by walking the VirtualSpaceList and checking the ranges.

        This can be avoided completely when the pointer is obviously bogus, or, in the case of MetaspaceObj::is_metaspace_obj(), not correctly aligned.

        It could also be avoided when the address does not fall within a range of [lowest ever|highest ever), were the list to keep such a range.

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                stuefe Thomas Stuefe
                stuefe Thomas Stuefe
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