/*

 * Copyright (c) 1997, 2019, 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

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#include "precompiled.hpp"

#include "oops/markWord.hpp"

#include "runtime/thread.inline.hpp"

#include "runtime/objectMonitor.hpp"

void markWord::print_on(outputStream* st) const {

  if (is_marked()) {  // last bits = 11

    st->print(" marked(" INTPTR_FORMAT ")", value());

  } else if (has_monitor()) {  // last bits = 10

    // have to check has_monitor() before is_locked()

    st->print(" monitor(" INTPTR_FORMAT ")=", value());

    ObjectMonitor* mon = monitor();

    if (mon == NULL) {

      st->print("NULL (this should never be seen!)");

    } else {

      mon->print_on(st);

    }

  } else if (is_locked()) {  // last bits != 01 => 00

    // thin locked

    st->print(" locked(" INTPTR_FORMAT ")", value());

  } else {

    st->print(" mark(");

    // Biased bit is 3rd rightmost bit

    if (is_neutral()) {   // last bits = 001

      st->print("is_neutral");

      if (has_no_hash()) {

        st->print(" no_hash");

      } else {

        st->print(" hash=" INTPTR_FORMAT, hash());

      }

    } else if (has_bias_pattern()) {  // last bits = 101

      st->print("is_biased");

      JavaThread* jt = biased_locker();

      st->print(" biased_locker=" INTPTR_FORMAT " epoch=%d", p2i(jt), bias_epoch());

    } else {

      st->print("??");

    }

    st->print(" age=%d)", age());

  }

}