markOop.cpp revision 8638:767f36deb0dc 
1/*
2 * Copyright (c) 1997, 2015, 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.inline.hpp"
29
30PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
31
32void markOopDesc::print_on(outputStream* st) const {
33  if (is_marked()) {
34    st->print(" marked(" INTPTR_FORMAT ")", value());
35  } else if (is_locked()) {
36    st->print(" locked(" INTPTR_FORMAT ")->", value());
37    if (is_neutral()) {
38      st->print("is_neutral");
39      if (has_no_hash()) st->print(" no_hash");
40      else st->print(" hash=" INTPTR_FORMAT, hash());
41      st->print(" age=%d", age());
42    } else if (has_bias_pattern()) {
43      st->print("is_biased");
44      JavaThread* jt = biased_locker();
45      st->print(" biased_locker=" INTPTR_FORMAT, p2i(jt));
46    } else if (has_monitor()) {
47      ObjectMonitor* mon = monitor();
48      if (mon == NULL)
49        st->print("monitor=NULL");
50      else {
51        BasicLock * bl = (BasicLock *) mon->owner();
52        st->print("monitor={count=" INTPTR_FORMAT ",waiters=" INTPTR_FORMAT ",recursions=" INTPTR_FORMAT ",owner=" INTPTR_FORMAT "}",
53                mon->count(), mon->waiters(), mon->recursions(), p2i(bl));
54      }
55    } else {
56      st->print("??");
57    }
58  } else {
59    assert(is_unlocked() || has_bias_pattern(), "just checking");
60    st->print("mark(");
61    if (has_bias_pattern()) st->print("biased,");
62    st->print("hash %#lx,", hash());
63    st->print("age %d)", age());
64  }
65}
66