1 /* 2 * Copyright (c) 1999, 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 #ifndef SHARE_VM_CI_CIMETADATA_HPP 26 #define SHARE_VM_CI_CIMETADATA_HPP 27 28 #include "ci/ciBaseObject.hpp" 29 #include "ci/ciClassList.hpp" 30 #include "memory/allocation.hpp" 31 #include "runtime/handles.hpp" 32 #include "runtime/jniHandles.hpp" 33 34 // ciMetadata 35 // 36 // Compiler interface to metadata object in the VM, not Java object. 37 38 class ciMetadata: public ciBaseObject { 39 CI_PACKAGE_ACCESS 40 friend class ciEnv; 41 42 protected: 43 Metadata* _metadata; 44 45 ciMetadata(): _metadata(NULL) {} 46 ciMetadata(Metadata* o): _metadata(o) {} 47 48 virtual bool is_classless() const { return false; } 49 public: 50 bool is_loaded() const { return _metadata != NULL || is_classless(); } 51 52 virtual bool is_metadata() const { return true; } 53 54 virtual bool is_type() const { return false; } 55 virtual bool is_cpcache() const { return false; } 56 virtual bool is_return_address() const { return false; } 57 virtual bool is_method() const { return false; } 58 virtual bool is_method_data() const { return false; } 59 virtual bool is_klass() const { return false; } 60 virtual bool is_instance_klass() const { return false; } 61 virtual bool is_array_klass() const { return false; } 62 virtual bool is_obj_array_klass() const { return false; } 63 virtual bool is_type_array_klass() const { return false; } 64 virtual void dump_replay_data(outputStream* st) { /* do nothing */ } 65 66 ciMethod* as_method() { 67 assert(is_method(), "bad cast"); 68 return (ciMethod*)this; 69 } 70 ciMethodData* as_method_data() { 71 assert(is_method_data(), "bad cast"); 72 return (ciMethodData*)this; 73 } 74 ciSymbol* as_symbol() { 75 assert(is_symbol(), "bad cast"); 76 return (ciSymbol*)this; 77 } 78 ciType* as_type() { 79 assert(is_type(), "bad cast"); 80 return (ciType*)this; 81 } 82 ciReturnAddress* as_return_address() { 83 assert(is_return_address(), "bad cast"); 84 return (ciReturnAddress*)this; 85 } 86 ciKlass* as_klass() { 87 assert(is_klass(), "bad cast"); 88 return (ciKlass*)this; 89 } 90 ciInstanceKlass* as_instance_klass() { 91 assert(is_instance_klass(), "bad cast"); 92 return (ciInstanceKlass*)this; 93 } 94 ciArrayKlass* as_array_klass() { 95 assert(is_array_klass(), "bad cast"); 96 return (ciArrayKlass*)this; 97 } 98 ciObjArrayKlass* as_obj_array_klass() { 99 assert(is_obj_array_klass(), "bad cast"); 100 return (ciObjArrayKlass*)this; 101 } 102 ciTypeArrayKlass* as_type_array_klass() { 103 assert(is_type_array_klass(), "bad cast"); 104 return (ciTypeArrayKlass*)this; 105 } 106 107 Metadata* constant_encoding() { return _metadata; } 108 109 bool equals(ciMetadata* obj) const { return (this == obj); } 110 111 int hash() { return ident() * 31; } // ??? 112 113 void print(outputStream* st); 114 virtual void print_impl(outputStream* st) {} 115 virtual const char* type_string() { return "ciMetadata"; } 116 117 void print() { print(tty); } 118 void print_metadata(outputStream* st = tty); 119 120 }; 121 #endif // SHARE_VM_CI_CIMETADATA_HPP