Wed, 26 Jun 2013 16:58:37 +0200
8013590: NPG: Add a memory pool MXBean for Metaspace
Reviewed-by: jmasa, mgerdin
1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #include "precompiled.hpp"
26 #include "memory/iterator.hpp"
27 #include "oops/oop.inline.hpp"
29 void KlassToOopClosure::do_klass(Klass* k) {
30 k->oops_do(_oop_closure);
31 }
33 void CLDToOopClosure::do_cld(ClassLoaderData* cld) {
34 cld->oops_do(_oop_closure, &_klass_closure, _must_claim_cld);
35 }
37 void ObjectToOopClosure::do_object(oop obj) {
38 obj->oop_iterate(_cl);
39 }
41 void VoidClosure::do_void() {
42 ShouldNotCallThis();
43 }
45 MarkingCodeBlobClosure::MarkScope::MarkScope(bool activate)
46 : _active(activate)
47 {
48 if (_active) nmethod::oops_do_marking_prologue();
49 }
51 MarkingCodeBlobClosure::MarkScope::~MarkScope() {
52 if (_active) nmethod::oops_do_marking_epilogue();
53 }
55 void MarkingCodeBlobClosure::do_code_blob(CodeBlob* cb) {
56 nmethod* nm = cb->as_nmethod_or_null();
57 if (nm == NULL) return;
58 if (!nm->test_set_oops_do_mark()) {
59 NOT_PRODUCT(if (TraceScavenge) nm->print_on(tty, "oops_do, 1st visit\n"));
60 do_newly_marked_nmethod(nm);
61 } else {
62 NOT_PRODUCT(if (TraceScavenge) nm->print_on(tty, "oops_do, skipped on 2nd visit\n"));
63 }
64 }
66 void CodeBlobToOopClosure::do_newly_marked_nmethod(nmethod* nm) {
67 nm->oops_do(_cl, /*do_strong_roots_only=*/ true);
68 }
70 void CodeBlobToOopClosure::do_code_blob(CodeBlob* cb) {
71 if (!_do_marking) {
72 nmethod* nm = cb->as_nmethod_or_null();
73 NOT_PRODUCT(if (TraceScavenge && Verbose && nm != NULL) nm->print_on(tty, "oops_do, unmarked visit\n"));
74 // This assert won't work, since there are lots of mini-passes
75 // (mostly in debug mode) that co-exist with marking phases.
76 //assert(!(cb->is_nmethod() && ((nmethod*)cb)->test_oops_do_mark()), "found marked nmethod during mark-free phase");
77 if (nm != NULL) {
78 nm->oops_do(_cl);
79 }
80 } else {
81 MarkingCodeBlobClosure::do_code_blob(cb);
82 }
83 }