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