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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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12
hotspot/src/share/vm/code/debugInfoRec.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1998, 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
@ -56,8 +56,8 @@
// NB: nodes from create_scope_values and create_locations
// can be reused for simple sharing.
// - mark the end of the scopes (end_safepoint or end_non_safepoint)
// 2) Use oop_size, data_size, pcs_size to create the nmethod and
// finally migrate the debugging information into the nmethod
// 2) Use oop_size, metadata_size, data_size, pcs_size to create the nmethod
// and finally migrate the debugging information into the nmethod
// by calling copy_to.
class DebugToken; // Opaque datatype for stored:
@ -123,6 +123,7 @@ class DebugInformationRecorder: public ResourceObj {
int data_size();
int pcs_size();
int oop_size() { return oop_recorder()->oop_size(); }
int metadata_size() { return oop_recorder()->metadata_size(); }
// copy the generated debugging information to nmethod
void copy_to(nmethod* nm);
@ -193,6 +194,11 @@ class DebugInformationRecorder: public ResourceObj {
int serialize_scope_values(GrowableArray<ScopeValue*>* values);
int find_sharable_decode_offset(int stream_offset);
#ifndef PRODUCT
bool recorders_frozen();
void mark_recorders_frozen();
#endif // PRODUCT
public:
enum { serialized_null = 0 };
};