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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/gc_implementation/parallelScavenge/psCompactionManager.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2005, 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
@ -32,7 +32,6 @@
#include "gc_implementation/parallelScavenge/psOldGen.hpp"
#include "gc_implementation/parallelScavenge/psParallelCompact.hpp"
#include "oops/objArrayKlass.inline.hpp"
#include "oops/oop.hpp"
#include "oops/oop.inline.hpp"
#include "oops/oop.pcgc.inline.hpp"
#include "utilities/stack.inline.hpp"
@ -175,13 +174,6 @@ ParCompactionManager::gc_thread_compaction_manager(int index) {
return _manager_array[index];
}
void ParCompactionManager::reset() {
for(uint i = 0; i < ParallelGCThreads + 1; i++) {
assert(manager_array(i)->revisit_klass_stack()->is_empty(), "sanity");
assert(manager_array(i)->revisit_mdo_stack()->is_empty(), "sanity");
}
}
void ParCompactionManager::follow_marking_stacks() {
do {
// Drain the overflow stack first, to allow stealing from the marking stack.
@ -196,10 +188,10 @@ void ParCompactionManager::follow_marking_stacks() {
// Process ObjArrays one at a time to avoid marking stack bloat.
ObjArrayTask task;
if (_objarray_stack.pop_overflow(task)) {
objArrayKlass* const k = (objArrayKlass*)task.obj()->blueprint();
objArrayKlass* const k = (objArrayKlass*)task.obj()->klass();
k->oop_follow_contents(this, task.obj(), task.index());
} else if (_objarray_stack.pop_local(task)) {
objArrayKlass* const k = (objArrayKlass*)task.obj()->blueprint();
objArrayKlass* const k = (objArrayKlass*)task.obj()->klass();
k->oop_follow_contents(this, task.obj(), task.index());
}
} while (!marking_stacks_empty());