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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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9
hotspot/src/share/vm/memory/referenceProcessor.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -345,13 +345,11 @@ class ReferenceProcessor : public CHeapObj<mtGC> {
// The caller is responsible for taking care of potential
// interference with concurrent operations on these lists
// (or predicates involved) by other threads. Currently
// only used by the CMS collector. should_unload_classes is
// used to aid assertion checking when classes are collected.
// only used by the CMS collector.
void preclean_discovered_references(BoolObjectClosure* is_alive,
OopClosure* keep_alive,
VoidClosure* complete_gc,
YieldClosure* yield,
bool should_unload_classes);
YieldClosure* yield);
// Delete entries in the discovered lists that have
// either a null referent or are not active. Such
@ -496,6 +494,7 @@ class ReferenceProcessor : public CHeapObj<mtGC> {
// Balance each of the discovered lists.
void balance_all_queues();
void verify_list(DiscoveredList& ref_list);
// Discover a Reference object, using appropriate discovery criteria
bool discover_reference(oop obj, ReferenceType rt);