1/*
2 * Copyright (c) 1997, 2019, 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 */
24
25#include "precompiled.hpp"
26#include "oops/markOop.hpp"
27#include "runtime/thread.inline.hpp"
28#include "runtime/objectMonitor.hpp"
29
30void markOopDesc::print_on(outputStream* st) const {
31 if (is_marked()) { // last bits = 11
32 st->print(" marked(" INTPTR_FORMAT ")", value());
33 } else if (has_monitor()) { // last bits = 10
34 // have to check has_monitor() before is_locked()
35 st->print(" monitor(" INTPTR_FORMAT ")=", value());
36 ObjectMonitor* mon = monitor();
37 if (mon == NULL) {
38 st->print("NULL (this should never be seen!)");
39 } else {
40 mon->print_on(st);
41 }
42 } else if (is_locked()) { // last bits != 01 => 00
43 // thin locked
44 st->print(" locked(" INTPTR_FORMAT ")", value());
45 } else {
46 st->print(" mark(");
47 // Biased bit is 3rd rightmost bit
48 if (is_neutral()) { // last bits = 001
49 st->print("is_neutral");
50 if (has_no_hash()) {
51 st->print(" no_hash");
52 } else {
53 st->print(" hash=" INTPTR_FORMAT, hash());
54 }
55 } else if (has_bias_pattern()) { // last bits = 101
56 st->print("is_biased");
57 JavaThread* jt = biased_locker();
58 st->print(" biased_locker=" INTPTR_FORMAT " epoch=%d", p2i(jt), bias_epoch());
59 } else {
60 st->print("??");
61 }
62 st->print(" age=%d)", age());
63 }
64}
65