1 /* 2 * Copyright (c) 1998, 2009, 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 class constantPoolCacheKlass: public Klass { 26 juint _alloc_size; // allocation profiling support 27 public: 28 // Dispatched klass operations 29 bool oop_is_constantPoolCache() const { return true; } 30 int oop_size(oop obj) const; 31 int klass_oop_size() const { return object_size(); } 32 33 // Allocation 34 DEFINE_ALLOCATE_PERMANENT(constantPoolCacheKlass); 35 constantPoolCacheOop allocate(int length, bool is_conc_safe, TRAPS); 36 static klassOop create_klass(TRAPS); 37 38 // Casting from klassOop 39 static constantPoolCacheKlass* cast(klassOop k) { 40 assert(k->klass_part()->oop_is_constantPoolCache(), "cast to constantPoolCacheKlass"); 41 return (constantPoolCacheKlass*)k->klass_part(); 42 } 43 44 // Sizing 45 static int header_size() { return oopDesc::header_size() + sizeof(constantPoolCacheKlass)/HeapWordSize; } 46 int object_size() const { return align_object_size(header_size()); } 47 48 // Garbage collection 49 void oop_follow_contents(oop obj); 50 int oop_adjust_pointers(oop obj); 51 virtual bool oop_is_conc_safe(oop obj) const; 52 53 // Parallel Scavenge and Parallel Old 54 PARALLEL_GC_DECLS 55 56 // Iterators 57 int oop_oop_iterate(oop obj, OopClosure* blk); 58 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); 59 60 // Allocation profiling support 61 juint alloc_size() const { return _alloc_size; } 62 void set_alloc_size(juint n) { _alloc_size = n; } 63 64 // Printing 65 void oop_print_value_on(oop obj, outputStream* st); 66 void oop_print_on(oop obj, outputStream* st); 67 68 // Verification 69 const char* internal_name() const; 70 void oop_verify_on(oop obj, outputStream* st); 71 };