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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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16
hotspot/src/share/vm/code/scopeDesc.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 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
@ -27,17 +27,17 @@
#include "code/debugInfo.hpp"
#include "code/pcDesc.hpp"
#include "oops/methodOop.hpp"
#include "oops/method.hpp"
#include "utilities/growableArray.hpp"
// SimpleScopeDesc is used when all you need to extract from
// a given pc,nmethod pair is a methodOop and a bci. This is
// a given pc,nmethod pair is a Method* and a bci. This is
// quite a bit faster than allocating a full ScopeDesc, but
// very limited in abilities.
class SimpleScopeDesc : public StackObj {
private:
methodOop _method;
Method* _method;
int _bci;
public:
@ -46,11 +46,11 @@ class SimpleScopeDesc : public StackObj {
assert(pc_desc != NULL, "Must be able to find matching PcDesc");
DebugInfoReadStream buffer(code, pc_desc->scope_decode_offset());
int ignore_sender = buffer.read_int();
_method = methodOop(buffer.read_oop());
_method = buffer.read_method();
_bci = buffer.read_bci();
}
methodOop method() { return _method; }
Method* method() { return _method; }
int bci() { return _bci; }
};
@ -68,7 +68,7 @@ class ScopeDesc : public ResourceObj {
ScopeDesc(const nmethod* code, int decode_offset, bool reexecute, bool return_oop);
// JVM state
methodHandle method() const { return _method; }
Method* method() const { return _method; }
int bci() const { return _bci; }
bool should_reexecute() const { return _reexecute; }
bool return_oop() const { return _return_oop; }
@ -94,7 +94,7 @@ class ScopeDesc : public ResourceObj {
ScopeDesc(const ScopeDesc* parent);
// JVM state
methodHandle _method;
Method* _method;
int _bci;
bool _reexecute;
bool _return_oop;