1 /* 2 * Copyright (c) 1997, 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_METHODKLASS_HPP 26 #define SHARE_VM_OOPS_METHODKLASS_HPP 27 28 #include "oops/klass.hpp" 29 #include "oops/klassOop.hpp" 30 #include "oops/methodOop.hpp" 31 32 // a methodKlass is the klass of a methodOop 33 34 class methodKlass : public Klass { 35 friend class VMStructs; 36 private: 37 juint _alloc_size; // allocation profiling support 38 public: 39 // Testing 40 bool oop_is_method() const { return true; } 41 42 // Allocation 43 DEFINE_ALLOCATE_PERMANENT(methodKlass); 44 methodOop allocate(constMethodHandle xconst, AccessFlags access_flags, 45 TRAPS); 46 static klassOop create_klass(TRAPS); 47 48 // Sizing 49 int oop_size(oop obj) const; 50 int klass_oop_size() const { return object_size(); } 51 52 // Casting from klassOop 53 static methodKlass* cast(klassOop k) { 54 assert(k->klass_part()->oop_is_method(), "cast to methodKlass"); 55 return (methodKlass*) k->klass_part(); 56 } 57 58 // Sizing 59 static int header_size() { return oopDesc::header_size() + sizeof(methodKlass)/HeapWordSize; } 60 int object_size() const { return align_object_size(header_size()); } 61 62 // Garbage collection 63 void oop_follow_contents(oop obj); 64 int oop_adjust_pointers(oop obj); 65 bool oop_is_parsable(oop obj) const; 66 67 // Parallel Scavenge and Parallel Old 68 PARALLEL_GC_DECLS 69 70 // Allocation profiling support 71 juint alloc_size() const { return _alloc_size; } 72 void set_alloc_size(juint n) { _alloc_size = n; } 73 74 // Iterators 75 int oop_oop_iterate(oop obj, OopClosure* blk); 76 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); 77 78 public: 79 // Printing 80 void oop_print_value_on(oop obj, outputStream* st); 81 #ifndef PRODUCT 82 void oop_print_on (oop obj, outputStream* st); 83 #endif //PRODUCT 84 85 // Verify operations 86 const char* internal_name() const; 87 void oop_verify_on(oop obj, outputStream* st); 88 bool oop_partially_loaded(oop obj) const; 89 void oop_set_partially_loaded(oop obj); 90 }; 91 92 #endif // SHARE_VM_OOPS_METHODKLASS_HPP