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6479360: PrintClassHistogram improvements

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Jcmd <pid> GC.class_stats (UnlockDiagnosticVMOptions)

Reviewed-by: coleenp, hseigel, sla, acorn
This commit is contained in:
Ioi Lam 2013-01-25 15:06:18 -05:00 • committed by Karen Kinnear
parent 19303cc71d
commit 93b845e21b
23 changed files with 807 additions and 53 deletions
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10
hotspot/src/share/vm/oops/arrayKlass.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2013, 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
@ -106,6 +106,14 @@ class ArrayKlass: public Klass {
static int header_size() { return sizeof(ArrayKlass)/HeapWordSize; }
static int static_size(int header_size);
#if INCLUDE_SERVICES
virtual void collect_statistics(KlassSizeStats *sz) const {
Klass::collect_statistics(sz);
// Do nothing for now, but remember to modify if you add new
// stuff to ArrayKlass.
}
#endif
// Java vtable
klassVtable* vtable() const; // return new klassVtable
int vtable_length() const { return _vtable_len; }