1 /* 2 * Copyright (c) 2003, 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_OOPS_CONSTMETHODKLASS_HPP 26 #define SHARE_VM_OOPS_CONSTMETHODKLASS_HPP 27 28 #include "oops/klass.hpp" 29 #include "oops/oop.hpp" 30 #include "runtime/orderAccess.hpp" 31 32 // A constMethodKlass is the klass of a constMethodOop 33 34 class constMethodKlass : public Klass { 35 friend class VMStructs; 36 private: 37 juint _alloc_size; // allocation profiling support 38 public: 39 // Testing 40 bool oop_is_constMethod() const { return true; } 41 virtual bool oop_is_parsable(oop obj) const; 42 virtual bool oop_is_conc_safe(oop obj) const; 43 44 45 // Allocation 46 DEFINE_ALLOCATE_PERMANENT(constMethodKlass); 47 constMethodOop allocate(int byte_code_size, int compressed_line_number_size, 48 int localvariable_table_length, 49 int exception_table_length, 50 int checked_exceptions_length, 51 bool is_conc_safe, 52 TRAPS); 53 static klassOop create_klass(TRAPS); 54 55 // Sizing 56 int oop_size(oop obj) const; 57 int klass_oop_size() const { return object_size(); } 58 59 // Casting from klassOop 60 static constMethodKlass* cast(klassOop k) { 61 assert(k->klass_part()->oop_is_constMethod(), "cast to constMethodKlass"); 62 return (constMethodKlass*) k->klass_part(); 63 } 64 65 // Sizing 66 static int header_size() { 67 return oopDesc::header_size() + sizeof(constMethodKlass)/HeapWordSize; 68 } 69 int object_size() const { 70 return align_object_size(header_size()); 71 } 72 73 // Garbage collection 74 void oop_follow_contents(oop obj); 75 int oop_adjust_pointers(oop obj); 76 77 // Parallel Scavenge and Parallel Old 78 PARALLEL_GC_DECLS 79 80 // Allocation profiling support 81 juint alloc_size() const { return _alloc_size; } 82 void set_alloc_size(juint n) { _alloc_size = n; } 83 84 // Iterators 85 int oop_oop_iterate(oop obj, OopClosure* blk); 86 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); 87 88 // Printing 89 void oop_print_value_on(oop obj, outputStream* st); 90 void oop_print_on (oop obj, outputStream* st); 91 92 // Verify operations 93 const char* internal_name() const; 94 void oop_verify_on(oop obj, outputStream* st); 95 bool oop_partially_loaded(oop obj) const; 96 void oop_set_partially_loaded(oop obj); 97 }; 98 99 #endif // SHARE_VM_OOPS_CONSTMETHODKLASS_HPP