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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/memory/cardTableModRefBS.hpp
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@ -285,12 +285,6 @@ public:
bool has_write_ref_pre_barrier() { return false; }
inline bool write_ref_needs_barrier(void* field, oop new_val) {
// Note that this assumes the perm gen is the highest generation
// in the address space
return new_val != NULL && !new_val->is_perm();
}
// Record a reference update. Note that these versions are precise!
// The scanning code has to handle the fact that the write barrier may be
// either precise or imprecise. We make non-virtual inline variants of