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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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14
hotspot/src/share/vm/services/classLoadingService.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2003, 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
@ -29,7 +29,7 @@
#include "runtime/perfData.hpp"
#include "utilities/growableArray.hpp"
class instanceKlass;
class InstanceKlass;
// VM monitoring and management support for the Class Loading subsystem
class ClassLoadingService : public AllStatic {
@ -48,7 +48,7 @@ private:
static PerfVariable* _class_methods_size;
static size_t compute_class_size(instanceKlass* k);
static size_t compute_class_size(InstanceKlass* k);
public:
static void init();
@ -102,9 +102,9 @@ public:
return (UsePerfData ? _class_methods_size->get_value() : -1);
}
static void notify_class_loaded(instanceKlass* k, bool shared_class);
static void notify_class_loaded(InstanceKlass* k, bool shared_class);
// All unloaded classes are non-shared
static void notify_class_unloaded(instanceKlass* k);
static void notify_class_unloaded(InstanceKlass* k);
static void add_class_method_size(int size) {
if (UsePerfData) {
_class_methods_size->inc(size);
@ -127,12 +127,12 @@ public:
int num_loaded_classes() { return _klass_handle_array->length(); }
KlassHandle get_klass(int index) { return _klass_handle_array->at(index); }
static void add_loaded_class(klassOop k) {
static void add_loaded_class(Klass* k) {
// FIXME: For now - don't include array klasses
// The spec is unclear at this point to count array klasses or not
// and also indirect creation of array of super class and secondaries
//
// for (klassOop l = k; l != NULL; l = Klass::cast(l)->array_klass_or_null()) {
// for (Klass* l = k; l != NULL; l = Klass::cast(l)->array_klass_or_null()) {
// KlassHandle h(_current_thread, l);
// _loaded_classes->append(h);
// }