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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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14
hotspot/src/share/vm/oops/klass.cpp
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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
@ -29,6 +29,7 @@
#include "classfile/vmSymbols.hpp"
#include "gc_implementation/shared/markSweep.inline.hpp"
#include "gc_interface/collectedHeap.inline.hpp"
#include "memory/heapInspection.hpp"
#include "memory/metadataFactory.hpp"
#include "memory/oopFactory.hpp"
#include "memory/resourceArea.hpp"
@ -624,6 +625,17 @@ void Klass::oop_print_value_on(oop obj, outputStream* st) {
obj->print_address_on(st);
}
#if INCLUDE_SERVICES
// Size Statistics
void Klass::collect_statistics(KlassSizeStats *sz) const {
sz->_klass_bytes = sz->count(this);
sz->_mirror_bytes = sz->count(java_mirror());
sz->_secondary_supers_bytes = sz->count_array(secondary_supers());
sz->_ro_bytes += sz->_secondary_supers_bytes;
sz->_rw_bytes += sz->_klass_bytes + sz->_mirror_bytes;
}
#endif // INCLUDE_SERVICES
// Verification