1 /* 2 * Copyright (c) 2000, 2010, 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_OOPS_METHODDATAKLASS_HPP 26 #define SHARE_VM_OOPS_METHODDATAKLASS_HPP 27 28 #include "oops/klass.hpp" 29 30 // a methodDataKlass is the klass of a methodDataOop 31 32 class methodDataKlass : public Klass { 33 friend class VMStructs; 34 private: 35 juint _alloc_size; // allocation profiling support 36 public: 37 // Testing 38 bool oop_is_methodData() const { return true; } 39 40 // Allocation 41 DEFINE_ALLOCATE_PERMANENT(methodDataKlass); 42 methodDataOop allocate(methodHandle method, TRAPS); 43 static klassOop create_klass(TRAPS); 44 45 // Sizing 46 int oop_size(oop obj) const; 47 int klass_oop_size() const { return object_size(); } 48 49 // Casting from klassOop 50 static methodDataKlass* cast(klassOop k) { 51 assert(k->klass_part()->oop_is_methodData(), "cast to methodDataKlass"); 52 return (methodDataKlass*) k->klass_part(); 53 } 54 55 // Sizing 56 static int header_size() { 57 return oopDesc::header_size() + sizeof(methodDataKlass)/wordSize; 58 } 59 int object_size() const { 60 return align_object_size(header_size()); 61 } 62 63 // Garbage collection 64 void oop_follow_contents(oop obj); 65 int oop_adjust_pointers(oop obj); 66 bool oop_is_parsable(oop obj) const; 67 68 // Parallel Scavenge and Parallel Old 69 PARALLEL_GC_DECLS 70 71 // Allocation profiling support 72 juint alloc_size() const { return _alloc_size; } 73 void set_alloc_size(juint n) { _alloc_size = n; } 74 75 // Iterators 76 int oop_oop_iterate(oop obj, OopClosure* blk); 77 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); 78 79 public: 80 // Printing 81 void oop_print_value_on(oop obj, outputStream* st); 82 #ifndef PRODUCT 83 void oop_print_on (oop obj, outputStream* st); 84 #endif //PRODUCT 85 86 // Verify operations 87 const char* internal_name() const; 88 void oop_verify_on(oop obj, outputStream* st); 89 }; 90 91 #endif // SHARE_VM_OOPS_METHODDATAKLASS_HPP