1 /* 2 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2009 Red Hat, Inc. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 class SharkConstant : public ResourceObj { 27 public: 28 static SharkConstant* for_ldc(ciBytecodeStream* iter); 29 static SharkConstant* for_field(ciBytecodeStream* iter); 30 31 private: 32 SharkConstant(ciConstant constant, ciType* type); 33 34 private: 35 SharkValue* _value; 36 ciObject* _object; 37 ciType* _type; 38 bool _is_loaded; 39 bool _is_nonzero; 40 bool _is_two_word; 41 42 public: 43 bool is_loaded() const { 44 return _is_loaded; 45 } 46 bool is_nonzero() const { 47 assert(is_loaded(), "should be"); 48 return _is_nonzero; 49 } 50 bool is_two_word() const { 51 assert(is_loaded(), "should be"); 52 return _is_two_word; 53 } 54 55 public: 56 SharkValue* value(SharkBuilder* builder) { 57 assert(is_loaded(), "should be"); 58 if (_value == NULL) { 59 _value = SharkValue::create_generic( 60 _type, builder->CreateInlineOop(_object), _is_nonzero); 61 } 62 return _value; 63 } 64 };