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 private: 39 // Constructor 40 ValueArrayKlass(Klass* element_klass, Symbol* name); 41 42 static ValueArrayKlass* allocate_klass(Klass* element_klass, Symbol* name, TRAPS); 43 protected: 44 // Returns the ArrayKlass for n'th dimension. 45 Klass* array_klass_impl(bool or_null, int n, TRAPS); 46 47 // Returns the array class with this class as element type. 48 Klass* array_klass_impl(bool or_null, TRAPS); 49 50 public: 51 52 ValueArrayKlass() {} 53 54 virtual ValueKlass* element_klass() const; 55 virtual void set_element_klass(Klass* k); 56 57 // Casting from Klass* 58 static ValueArrayKlass* cast(Klass* k) { 59 assert(k->is_valueArray_klass(), "cast to ValueArrayKlass"); 60 return (ValueArrayKlass*) k; 61 } 62 63 // klass allocation 64 static ValueArrayKlass* allocate_klass(Klass* element_klass, TRAPS); 65 66 void initialize(TRAPS); 67 68 ModuleEntry* module() const; 69 PackageEntry* package() const; 70 71 int element_byte_size() const { return 1 << layout_helper_log2_element_size(_layout_helper); } 72 73 bool is_valueArray_klass_slow() const { return true; } 74 75 bool contains_oops() { 76 return element_klass()->contains_oops(); 77 } 78 79 bool is_atomic() { 80 return element_klass()->is_atomic(); 81 } 82 83 oop protection_domain() const; 84 85 static jint array_layout_helper(ValueKlass* vklass); // layout helper for values 86 87 // sizing 88 static int header_size() { return sizeof(ValueArrayKlass)/HeapWordSize; } 89 int size() const { return ArrayKlass::static_size(header_size()); } 90 91 jint max_elements() const; 92 93 int oop_size(oop obj) const; 94 95 // Oop Allocation 96 oop allocate(int length, bool do_zero, TRAPS); 97 oop multi_allocate(int rank, jint* sizes, TRAPS); 98 99 // Naming 100 const char* internal_name() const { return external_name(); } 101 102 // Copying 103 void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS); 104 105 // GC specific object visitors 106 // 107 // Mark Sweep 108 int oop_ms_adjust_pointers(oop obj); 109 110 #if INCLUDE_ALL_GCS 111 // Parallel Scavenge 112 void oop_ps_push_contents( oop obj, PSPromotionManager* pm); 113 // Parallel Compact 114 void oop_pc_follow_contents(oop obj, ParCompactionManager* cm); 115 void oop_pc_update_pointers(oop obj, ParCompactionManager* cm); 116 #endif 117 118 CMH("Oop iterators. Don't have embedded oops yet, so CMH...") 119 120 private: 121 template <bool nv, typename OopClosureType> 122 inline void oop_oop_iterate(oop obj, OopClosureType* closure); 123 template <bool nv, typename OopClosureType> 124 inline void oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr); 125 126 template <bool nv, typename T, class OopClosureType> 127 inline void oop_oop_iterate_elements_specialized(valueArrayOop a, OopClosureType* closure); 128 129 template <bool nv, class OopClosureType> 130 inline void oop_oop_iterate_elements_bounded(valueArrayOop a, OopClosureType* closure, MemRegion mr); 131 132 template <bool nv, typename T, class OopClosureType> 133 inline void oop_oop_iterate_elements_specialized_bounded(valueArrayOop a, OopClosureType* closure, void* low, void* high); 134 135 public: 136 template <bool nv, class OopClosureType> 137 inline void oop_oop_iterate_elements(valueArrayOop a, OopClosureType* closure); 138 139 ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_OOP_ITERATE_DECL) 140 ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_OOP_ITERATE_DECL) 141 ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_OOP_ITERATE_DECL_RANGE) 142 ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_OOP_ITERATE_DECL_RANGE) 143 144 #if INCLUDE_ALL_GCS 145 ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_OOP_ITERATE_DECL_NO_BACKWARDS) 146 ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_OOP_ITERATE_DECL_NO_BACKWARDS) 147 #endif // INCLUDE_ALL_GCS 148 149 public: 150 // Printing 151 void print_on(outputStream* st) const; 152 void print_value_on(outputStream* st) const; 153 154 void oop_print_value_on(oop obj, outputStream* st); 155 #ifndef PRODUCT 156 void oop_print_on(oop obj, outputStream* st); 157 #endif 158 159 // Verification 160 void verify_on(outputStream* st); 161 void oop_verify_on(oop obj, outputStream* st); 162 }; 163 164 #endif 165