1 /* 2 * Copyright (c) 1999, 2011, 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 #ifndef SHARE_VM_CI_CIINSTANCE_HPP 26 #define SHARE_VM_CI_CIINSTANCE_HPP 27 28 #include "ci/ciObject.hpp" 29 #include "oops/instanceOop.hpp" 30 31 // ciInstance 32 // 33 // This class represents an instanceOop in the HotSpot virtual 34 // machine. This is an oop which corresponds to a non-array 35 // instance of java.lang.Object. 36 class ciInstance : public ciObject { 37 CI_PACKAGE_ACCESS 38 39 protected: 40 ciInstance(instanceHandle h_i) : ciObject(h_i) { 41 assert(h_i()->is_instance(), "wrong type"); 42 } 43 44 ciInstance(ciKlass* klass) : ciObject(klass) {} 45 46 instanceOop get_instanceOop() { return (instanceOop)get_oop(); } 47 48 const char* type_string() { return "ciInstance"; } 49 50 void print_impl(outputStream* st); 51 52 public: 53 // If this object is a java mirror, return the corresponding type. 54 // Otherwise, return NULL. 55 // (Remember that a java mirror is an instance of java.lang.Class.) 56 ciType* java_mirror_type(); 57 58 // What kind of ciObject is this? 59 bool is_instance() { return true; } 60 bool is_java_object() { return true; } 61 62 // Constant value of a field. 63 ciConstant field_value(ciField* field); 64 65 // Constant value of a field at the specified offset. 66 ciConstant field_value_by_offset(int field_offset); 67 68 ciKlass* java_lang_Class_klass(); 69 }; 70 71 #endif // SHARE_VM_CI_CIINSTANCE_HPP