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.inline.hpp"
  29 
  30 void markOopDesc::print_on(outputStream* st) const {
  31   if (is_marked()) {
  32     st->print(" marked(" INTPTR_FORMAT ")", value());
  33   } else if (has_monitor()) {
  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       st->print("{contentions=0x%08x,waiters=0x%08x"
  41                 ",recursions=" INTPTR_FORMAT ",owner=" INTPTR_FORMAT "}",
  42                 mon->contentions(), mon->waiters(), mon->recursions(),
  43                 p2i(mon->owner()));
  44     }
  45   } else if (is_locked()) {
  46     st->print(" locked(" INTPTR_FORMAT ")->", value());
  47     if (is_neutral()) {
  48       st->print("is_neutral");
  49       if (has_no_hash()) {
  50         st->print(" no_hash");
  51       } else {
  52         st->print(" hash=" INTPTR_FORMAT, hash());
  53       }
  54       st->print(" age=%d", age());
  55     } else if (has_bias_pattern()) {
  56       st->print("is_biased");
  57       JavaThread* jt = biased_locker();
  58       st->print(" biased_locker=" INTPTR_FORMAT, p2i(jt));
  59     } else {
  60       st->print("??");
  61     }
  62   } else {
  63     assert(is_unlocked() || has_bias_pattern(), "just checking");
  64     st->print("mark(");
  65     if (has_bias_pattern()) st->print("biased,");
  66     st->print("hash " INTPTR_FORMAT ",", hash());
  67     st->print("age %d)", age());
  68   }
  69 }