1 /* 2 * Copyright (c) 1998, 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_CPCACHEKLASS_HPP 26 #define SHARE_VM_OOPS_CPCACHEKLASS_HPP 27 28 #include "oops/arrayKlass.hpp" 29 #include "oops/cpCacheOop.hpp" 30 #include "oops/instanceKlass.hpp" 31 32 class constantPoolCacheKlass: public Klass { 33 juint _alloc_size; // allocation profiling support 34 public: 35 // Dispatched klass operations 36 bool oop_is_constantPoolCache() const { return true; } 37 int oop_size(oop obj) const; 38 int klass_oop_size() const { return object_size(); } 39 40 // Allocation 41 DEFINE_ALLOCATE_PERMANENT(constantPoolCacheKlass); 42 constantPoolCacheOop allocate(int length, bool is_conc_safe, TRAPS); 43 static klassOop create_klass(TRAPS); 44 45 // Casting from klassOop 46 static constantPoolCacheKlass* cast(klassOop k) { 47 assert(k->klass_part()->oop_is_constantPoolCache(), "cast to constantPoolCacheKlass"); 48 return (constantPoolCacheKlass*)k->klass_part(); 49 } 50 51 // Sizing 52 static int header_size() { return oopDesc::header_size() + sizeof(constantPoolCacheKlass)/HeapWordSize; } 53 int object_size() const { return align_object_size(header_size()); } 54 55 // Garbage collection 56 void oop_follow_contents(oop obj); 57 int oop_adjust_pointers(oop obj); 58 virtual bool oop_is_conc_safe(oop obj) const; 59 60 // Parallel Scavenge and Parallel Old 61 PARALLEL_GC_DECLS 62 63 // Iterators 64 int oop_oop_iterate(oop obj, OopClosure* blk); 65 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); 66 67 // Allocation profiling support 68 juint alloc_size() const { return _alloc_size; } 69 void set_alloc_size(juint n) { _alloc_size = n; } 70 71 // Printing 72 void oop_print_value_on(oop obj, outputStream* st); 73 void oop_print_on(oop obj, outputStream* st); 74 75 // Verification 76 const char* internal_name() const; 77 void oop_verify_on(oop obj, outputStream* st); 78 }; 79 80 #endif // SHARE_VM_OOPS_CPCACHEKLASS_HPP