| /* |
| * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_OOPS_TYPEARRAYKLASS_HPP |
| #define SHARE_VM_OOPS_TYPEARRAYKLASS_HPP |
| |
| #include "classfile/classLoaderData.hpp" |
| #include "oops/arrayKlass.hpp" |
| |
| // A TypeArrayKlass is the klass of a typeArray |
| // It contains the type and size of the elements |
| |
| class TypeArrayKlass : public ArrayKlass { |
| friend class VMStructs; |
| private: |
| jint _max_length; // maximum number of elements allowed in an array |
| |
| // Constructor |
| TypeArrayKlass(BasicType type, Symbol* name); |
| static TypeArrayKlass* allocate(ClassLoaderData* loader_data, BasicType type, Symbol* name, TRAPS); |
| public: |
| TypeArrayKlass() {} // For dummy objects. |
| |
| // instance variables |
| jint max_length() { return _max_length; } |
| void set_max_length(jint m) { _max_length = m; } |
| |
| // testers |
| DEBUG_ONLY(bool is_typeArray_klass_slow() const { return true; }) |
| |
| // klass allocation |
| static TypeArrayKlass* create_klass(BasicType type, const char* name_str, |
| TRAPS); |
| static inline Klass* create_klass(BasicType type, int scale, TRAPS) { |
| TypeArrayKlass* tak = create_klass(type, external_name(type), CHECK_NULL); |
| assert(scale == (1 << tak->log2_element_size()), "scale must check out"); |
| return tak; |
| } |
| |
| int oop_size(oop obj) const; |
| |
| bool compute_is_subtype_of(Klass* k); |
| |
| // Allocation |
| typeArrayOop allocate_common(int length, bool do_zero, TRAPS); |
| typeArrayOop allocate(int length, TRAPS) { return allocate_common(length, true, THREAD); } |
| oop multi_allocate(int rank, jint* sizes, TRAPS); |
| |
| oop protection_domain() const { return NULL; } |
| |
| // Copying |
| void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS); |
| |
| // GC specific object visitors |
| // |
| #if INCLUDE_ALL_GCS |
| // Parallel Scavenge |
| void oop_ps_push_contents( oop obj, PSPromotionManager* pm); |
| // Parallel Compact |
| void oop_pc_follow_contents(oop obj, ParCompactionManager* cm); |
| void oop_pc_update_pointers(oop obj, ParCompactionManager* cm); |
| #endif |
| |
| // Oop iterators. Since there are no oops in TypeArrayKlasses, |
| // these functions only return the size of the object. |
| |
| private: |
| // The implementation used by all oop_oop_iterate functions in TypeArrayKlasses. |
| inline void oop_oop_iterate_impl(oop obj, ExtendedOopClosure* closure); |
| |
| // Wraps oop_oop_iterate_impl to conform to macros. |
| template <bool nv, typename OopClosureType> |
| inline void oop_oop_iterate(oop obj, OopClosureType* closure); |
| |
| // Wraps oop_oop_iterate_impl to conform to macros. |
| template <bool nv, typename OopClosureType> |
| inline void oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr); |
| |
| public: |
| |
| ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_OOP_ITERATE_DECL) |
| ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_OOP_ITERATE_DECL) |
| ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_OOP_ITERATE_DECL_RANGE) |
| ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_OOP_ITERATE_DECL_RANGE) |
| |
| #if INCLUDE_ALL_GCS |
| ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_OOP_ITERATE_DECL_NO_BACKWARDS) |
| ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_OOP_ITERATE_DECL_NO_BACKWARDS) |
| #endif // INCLUDE_ALL_GCS |
| |
| |
| protected: |
| // Find n'th dimensional array |
| virtual Klass* array_klass_impl(bool or_null, int n, TRAPS); |
| |
| // Returns the array class with this class as element type |
| virtual Klass* array_klass_impl(bool or_null, TRAPS); |
| |
| public: |
| static TypeArrayKlass* cast(Klass* k) { |
| return const_cast<TypeArrayKlass*>(cast(const_cast<const Klass*>(k))); |
| } |
| |
| static const TypeArrayKlass* cast(const Klass* k) { |
| assert(k->is_typeArray_klass(), "cast to TypeArrayKlass"); |
| return static_cast<const TypeArrayKlass*>(k); |
| } |
| |
| // Naming |
| static const char* external_name(BasicType type); |
| |
| // Sizing |
| static int header_size() { return sizeof(TypeArrayKlass)/wordSize; } |
| int size() const { return ArrayKlass::static_size(header_size()); } |
| |
| // Initialization (virtual from Klass) |
| void initialize(TRAPS); |
| |
| public: |
| // Printing |
| #ifndef PRODUCT |
| void oop_print_on(oop obj, outputStream* st); |
| #endif |
| |
| void print_on(outputStream* st) const; |
| void print_value_on(outputStream* st) const; |
| |
| public: |
| const char* internal_name() const; |
| |
| ModuleEntry* module() const; |
| PackageEntry* package() const; |
| }; |
| |
| #endif // SHARE_VM_OOPS_TYPEARRAYKLASS_HPP |