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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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11
hotspot/src/share/vm/runtime/handles.cpp
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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
@ -24,6 +24,7 @@
#include "precompiled.hpp"
#include "memory/allocation.inline.hpp"
#include "oops/constantPool.hpp"
#include "oops/oop.inline.hpp"
#include "runtime/handles.inline.hpp"
#ifdef TARGET_OS_FAMILY_linux
@ -70,8 +71,10 @@ static uintx chunk_oops_do(OopClosure* f, Chunk* chunk, char* chunk_top) {
// during GC phase 3, a handle may be a forward pointer that
// is not yet valid, so loosen the assertion
while (bottom < top) {
// assert((*bottom)->is_oop(), "handle should point to oop");
assert(Universe::heap()->is_in(*bottom), "handle should be valid heap address");
// This test can be moved up but for now check every oop.
assert((*bottom)->is_oop(), "handle should point to oop");
f->do_oop(bottom++);
}
return handles_visited;
@ -148,6 +151,8 @@ HandleMark::~HandleMark() {
// Note: _nof_handlemarks is only set in debug mode
warning("%d: Allocated in HandleMark : %d", _nof_handlemarks, handles);
}
tty->print_cr("Handles %d", handles);
}
#endif