1 /* 2 * Copyright (c) 1999, 2010, 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 #ifndef SHARE_VM_SHARK_SHARKCONSTANT_HPP 27 #define SHARE_VM_SHARK_SHARKCONSTANT_HPP 28 29 #include "ci/ciStreams.hpp" 30 #include "memory/allocation.hpp" 31 #include "shark/sharkBuilder.hpp" 32 #include "shark/sharkValue.hpp" 33 34 class SharkConstant : public ResourceObj { 35 public: 36 static SharkConstant* for_ldc(ciBytecodeStream* iter); 37 static SharkConstant* for_field(ciBytecodeStream* iter); 38 39 private: 40 SharkConstant(ciConstant constant, ciType* type); 41 42 private: 43 SharkValue* _value; 44 ciObject* _object; 45 ciType* _type; 46 bool _is_loaded; 47 bool _is_nonzero; 48 bool _is_two_word; 49 50 public: 51 bool is_loaded() const { 52 return _is_loaded; 53 } 54 bool is_nonzero() const { 55 assert(is_loaded(), "should be"); 56 return _is_nonzero; 57 } 58 bool is_two_word() const { 59 assert(is_loaded(), "should be"); 60 return _is_two_word; 61 } 62 63 public: 64 SharkValue* value(SharkBuilder* builder) { 65 assert(is_loaded(), "should be"); 66 if (_value == NULL) { 67 _value = SharkValue::create_generic( 68 _type, builder->CreateInlineOop(_object), _is_nonzero); 69 } 70 return _value; 71 } 72 }; 73 74 #endif // SHARE_VM_SHARK_SHARKCONSTANT_HPP