ciBaseObject.cpp revision 3602:da91efe96a93 
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.
35void 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.
45uint ciBaseObject::ident() {
46  uint id = _ident >> FLAG_BITS;
47  assert(id != 0, "must be initialized");
48  return id;
49}
50