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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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15
hotspot/src/share/vm/asm/codeBuffer.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2011, 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
@ -486,6 +486,9 @@ class CodeBuffer: public StackObj {
bool insts_contains(address pc) const { return _insts.contains(pc); }
bool insts_contains2(address pc) const { return _insts.contains2(pc); }
// Record any extra oops required to keep embedded metadata alive
void finalize_oop_references(methodHandle method);
// Allocated size in all sections, when aligned and concatenated
// (this is the eventual state of the content in its final
// CodeBlob).
@ -504,6 +507,12 @@ class CodeBuffer: public StackObj {
return (recorder == NULL)? 0: recorder->oop_size();
}
// allocated size of any and all recorded metadata
csize_t total_metadata_size() const {
OopRecorder* recorder = oop_recorder();
return (recorder == NULL)? 0: recorder->metadata_size();
}
// Configuration functions, called immediately after the CB is constructed.
// The section sizes are subtracted from the original insts section.
// Note: Call them in reverse section order, because each steals from insts.
@ -532,9 +541,9 @@ class CodeBuffer: public StackObj {
copy_relocations_to(blob);
copy_code_to(blob);
}
void copy_oops_to(nmethod* nm) {
void copy_values_to(nmethod* nm) {
if (!oop_recorder()->is_unused()) {
oop_recorder()->copy_to(nm);
oop_recorder()->copy_values_to(nm);
}
}