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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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11
hotspot/src/share/vm/gc_implementation/shared/mutableSpace.cpp
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@ -216,7 +216,7 @@ bool MutableSpace::cas_deallocate(HeapWord *obj, size_t size) {
return (HeapWord*)Atomic::cmpxchg_ptr(obj, top_addr(), expected_top) == expected_top;
}
void MutableSpace::oop_iterate(OopClosure* cl) {
void MutableSpace::oop_iterate(ExtendedOopClosure* cl) {
HeapWord* obj_addr = bottom();
HeapWord* t = top();
// Could call objects iterate, but this is easier.
@ -225,6 +225,15 @@ void MutableSpace::oop_iterate(OopClosure* cl) {
}
}
void MutableSpace::oop_iterate_no_header(OopClosure* cl) {
HeapWord* obj_addr = bottom();
HeapWord* t = top();
// Could call objects iterate, but this is easier.
while (obj_addr < t) {
obj_addr += oop(obj_addr)->oop_iterate_no_header(cl);
}
}
void MutableSpace::object_iterate(ObjectClosure* cl) {
HeapWord* p = bottom();
while (p < top()) {