1 /*

     2  * Copyright (c) 2011, 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  */

    24 

    25 #include "precompiled.hpp"

    26 #include "ci/ciBaseObject.hpp"

    27 #include "ci/ciUtilities.hpp"

    28 #include "gc_interface/collectedHeap.inline.hpp"

    29 #include "oops/oop.inline2.hpp"

    30 

    31 // ------------------------------------------------------------------

    32 // ciBaseObject::set_ident

    33 //

    34 // Set the unique identity number of a ciBaseObject.

    35 void ciBaseObject::set_ident(uint id) {

    36   assert((_ident >> FLAG_BITS) == 0, "must only initialize once");

    37   assert( id < ((uint)1 << (BitsPerInt-FLAG_BITS)), "id too big");

    38   _ident = _ident + (id << FLAG_BITS);

    39 }

    40 

    41 // ------------------------------------------------------------------

    42 // ciBaseObject::ident

    43 //

    44 // Report the unique identity number of a ciBaseObject.

    45 uint ciBaseObject::ident() {

    46   uint id = _ident >> FLAG_BITS;

    47   assert(id != 0, "must be initialized");

    48   return id;

    49 }