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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/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.inline.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2001, 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
@ -266,16 +266,12 @@ inline void CMSCollector::icms_wait() {
inline void CMSCollector::save_sweep_limits() {
_cmsGen->save_sweep_limit();
_permGen->save_sweep_limit();
}
inline bool CMSCollector::is_dead_obj(oop obj) const {
HeapWord* addr = (HeapWord*)obj;
assert((_cmsGen->cmsSpace()->is_in_reserved(addr)
&& _cmsGen->cmsSpace()->block_is_obj(addr))
||
(_permGen->cmsSpace()->is_in_reserved(addr)
&& _permGen->cmsSpace()->block_is_obj(addr)),
&& _cmsGen->cmsSpace()->block_is_obj(addr)),
"must be object");
return should_unload_classes() &&
_collectorState == Sweeping &&
@ -453,6 +449,14 @@ inline void Par_MarkFromRootsClosure::do_yield_check() {
}
}
inline void PushOrMarkClosure::do_yield_check() {
_parent->do_yield_check();
}
inline void Par_PushOrMarkClosure::do_yield_check() {
_parent->do_yield_check();
}
// Return value of "true" indicates that the on-going preclean
// should be aborted.
inline bool ScanMarkedObjectsAgainCarefullyClosure::do_yield_check() {