1 /* 2 * Copyright (c) 2017, 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_VALUEARRAYKLASS_HPP 26 #define SHARE_VM_OOPS_VALUEARRAYKLASS_HPP 27 28 #include "classfile/classLoaderData.hpp" 29 #include "oops/arrayKlass.hpp" 30 #include "oops/valueKlass.hpp" 31 #include "utilities/macros.hpp" 32 33 /** 34 * Array of values, gives a layout of typeArrayOop, but needs oops iterators 35 */ 36 class ValueArrayKlass : public ArrayKlass { 37 friend class VMStructs; 38 39 public: 40 static const KlassID ID = ValueArrayKlassID; 41 42 private: 43 // Constructor 44 ValueArrayKlass(Klass* element_klass, Symbol* name); 45 46 static ValueArrayKlass* allocate_klass(Klass* element_klass, Symbol* name, TRAPS); 47 protected: 48 // Returns the ArrayKlass for n'th dimension. 49 Klass* array_klass_impl(bool or_null, int n, TRAPS); 50 51 // Returns the array class with this class as element type. 52 Klass* array_klass_impl(bool or_null, TRAPS); 53 54 public: 55 56 ValueArrayKlass() {} 57 58 virtual ValueKlass* element_klass() const; 59 virtual void set_element_klass(Klass* k); 60 61 // Casting from Klass* 62 static ValueArrayKlass* cast(Klass* k) { 63 assert(k->is_valueArray_klass(), "cast to ValueArrayKlass"); 64 return (ValueArrayKlass*) k; 65 } 66 67 // klass allocation 68 static ValueArrayKlass* allocate_klass(Klass* element_klass, TRAPS); 69 70 void initialize(TRAPS); 71 72 ModuleEntry* module() const; 73 PackageEntry* package() const; 74 75 bool can_be_primary_super_slow() const; 76 GrowableArray<Klass*>* compute_secondary_supers(int num_extra_slots, 77 Array<InstanceKlass*>* transitive_interfaces); 78 79 int element_byte_size() const { return 1 << layout_helper_log2_element_size(_layout_helper); } 80 81 bool is_valueArray_klass_slow() const { return true; } 82 83 bool contains_oops() { 84 return element_klass()->contains_oops(); 85 } 86 87 bool is_atomic() { 88 return element_klass()->is_atomic(); 89 } 90 91 oop protection_domain() const; 92 93 static jint array_layout_helper(ValueKlass* vklass); // layout helper for values 94 95 // sizing 96 static int header_size() { return sizeof(ValueArrayKlass)/HeapWordSize; } 97 int size() const { return ArrayKlass::static_size(header_size()); } 98 99 jint max_elements() const; 100 101 int oop_size(oop obj) const; 102 103 // Oop Allocation 104 valueArrayOop allocate(int length, TRAPS); 105 oop multi_allocate(int rank, jint* sizes, TRAPS); 106 107 // Naming 108 const char* internal_name() const { return external_name(); } 109 110 // Copying 111 void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS); 112 113 // GC specific object visitors 114 // 115 // Mark Sweep 116 int oop_ms_adjust_pointers(oop obj); 117 118 119 template <typename T, typename OopClosureType> 120 inline void oop_oop_iterate(oop obj, OopClosureType* closure); 121 122 template <typename T, typename OopClosureType> 123 inline void oop_oop_iterate_reverse(oop obj, OopClosureType* closure); 124 125 template <typename T, typename OopClosureType> 126 inline void oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr); 127 128 template <typename T, class OopClosureType> 129 inline void oop_oop_iterate_elements(valueArrayOop a, OopClosureType* closure); 130 131 private: 132 template <typename T, class OopClosureType> 133 inline void oop_oop_iterate_elements_specialized(valueArrayOop a, OopClosureType* closure); 134 135 template <typename T, class OopClosureType> 136 inline void oop_oop_iterate_elements_bounded(valueArrayOop a, OopClosureType* closure, MemRegion mr); 137 138 template <typename T, class OopClosureType> 139 inline void oop_oop_iterate_elements_specialized_bounded(valueArrayOop a, OopClosureType* closure, void* low, void* high); 140 141 public: 142 // Printing 143 void print_on(outputStream* st) const; 144 void print_value_on(outputStream* st) const; 145 146 void oop_print_value_on(oop obj, outputStream* st); 147 #ifndef PRODUCT 148 void oop_print_on(oop obj, outputStream* st); 149 #endif 150 151 // Verification 152 void verify_on(outputStream* st); 153 void oop_verify_on(oop obj, outputStream* st); 154 }; 155 156 #endif 157