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6964458: Reimplement class meta-data storage to use native memory

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Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes

Co-authored-by: Stefan Karlsson <stefan.karlsson@oracle.com>
Co-authored-by: Mikael Gerdin <mikael.gerdin@oracle.com>
Co-authored-by: Tom Rodriguez <tom.rodriguez@oracle.com>
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
This commit is contained in:
Jon Masamitsu 2012-09-01 13:25:18 -04:00 • committed by Coleen Phillimore
parent 36eee7c8c8
commit 5c58d27aac
853 changed files with 26124 additions and 82956 deletions
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6
hotspot/src/share/vm/opto/graphKit.cpp
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@ -3446,12 +3446,6 @@ void GraphKit::write_barrier_post(Node* oop_store,
if (t == TypePtr::NULL_PTR || t == Type::TOP)
// stores of null never (?) need barriers
return;
ciObject* con = t->is_oopptr()->const_oop();
if (con != NULL
&& con->is_perm()
&& Universe::heap()->can_elide_permanent_oop_store_barriers())
// no store barrier needed, because no old-to-new ref created
return;
}
if (use_ReduceInitialCardMarks()