| /* |
| * Copyright (c) 1997, 2015, 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_OBJARRAYKLASS_HPP |
| #define SHARE_VM_OOPS_OBJARRAYKLASS_HPP |
| |
| #include "classfile/classLoaderData.hpp" |
| #include "oops/arrayKlass.hpp" |
| #include "utilities/macros.hpp" |
| |
| // ObjArrayKlass is the klass for objArrays |
| |
| class ObjArrayKlass : public ArrayKlass { |
| friend class VMStructs; |
| private: |
| Klass* _element_klass; // The klass of the elements of this array type |
| Klass* _bottom_klass; // The one-dimensional type (InstanceKlass or TypeArrayKlass) |
| |
| // Constructor |
| ObjArrayKlass(int n, KlassHandle element_klass, Symbol* name); |
| static ObjArrayKlass* allocate(ClassLoaderData* loader_data, int n, KlassHandle klass_handle, Symbol* name, TRAPS); |
| public: |
| // For dummy objects |
| ObjArrayKlass() {} |
| |
| // Instance variables |
| Klass* element_klass() const { return _element_klass; } |
| void set_element_klass(Klass* k) { _element_klass = k; } |
| Klass** element_klass_addr() { return &_element_klass; } |
| |
| Klass* bottom_klass() const { return _bottom_klass; } |
| void set_bottom_klass(Klass* k) { _bottom_klass = k; } |
| Klass** bottom_klass_addr() { return &_bottom_klass; } |
| |
| // Compiler/Interpreter offset |
| static ByteSize element_klass_offset() { return in_ByteSize(offset_of(ObjArrayKlass, _element_klass)); } |
| |
| // Dispatched operation |
| bool can_be_primary_super_slow() const; |
| GrowableArray<Klass*>* compute_secondary_supers(int num_extra_slots); |
| bool compute_is_subtype_of(Klass* k); |
| DEBUG_ONLY(bool is_objArray_klass_slow() const { return true; }) |
| int oop_size(oop obj) const; |
| |
| // Allocation |
| static Klass* allocate_objArray_klass(ClassLoaderData* loader_data, |
| int n, KlassHandle element_klass, TRAPS); |
| |
| objArrayOop allocate(int length, TRAPS); |
| oop multi_allocate(int rank, jint* sizes, TRAPS); |
| |
| // Copying |
| void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS); |
| |
| // Compute protection domain |
| oop protection_domain() const { return bottom_klass()->protection_domain(); } |
| |
| private: |
| // Either oop or narrowOop depending on UseCompressedOops. |
| // must be called from within ObjArrayKlass.cpp |
| template <class T> void do_copy(arrayOop s, T* src, arrayOop d, |
| T* dst, int length, TRAPS); |
| protected: |
| // Returns the ObjArrayKlass for n'th dimension. |
| 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 ObjArrayKlass* cast(Klass* k) { |
| return const_cast<ObjArrayKlass*>(cast(const_cast<const Klass*>(k))); |
| } |
| |
| static const ObjArrayKlass* cast(const Klass* k) { |
| assert(k->is_objArray_klass(), "cast to ObjArrayKlass"); |
| return static_cast<const ObjArrayKlass*>(k); |
| } |
| |
| // Sizing |
| static int header_size() { return sizeof(ObjArrayKlass)/HeapWordSize; } |
| int size() const { return ArrayKlass::static_size(header_size()); } |
| |
| // Initialization (virtual from Klass) |
| void initialize(TRAPS); |
| |
| // GC specific object visitors |
| // |
| // Mark Sweep |
| int oop_ms_adjust_pointers(oop obj); |
| #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); |
| #endif |
| |
| // Oop fields (and metadata) iterators |
| // [nv = true] Use non-virtual calls to do_oop_nv. |
| // [nv = false] Use virtual calls to do_oop. |
| // |
| // The ObjArrayKlass iterators also visits the Object's klass. |
| |
| private: |
| |
| // Iterate over oop elements and metadata. |
| template <bool nv, typename OopClosureType> |
| inline void oop_oop_iterate(oop obj, OopClosureType* closure); |
| |
| // Iterate over oop elements within mr, and metadata. |
| template <bool nv, typename OopClosureType> |
| inline void oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr); |
| |
| // Iterate over oop elements with indices within [start, end), and metadata. |
| template <bool nv, class OopClosureType> |
| inline void oop_oop_iterate_range(oop obj, OopClosureType* closure, int start, int end); |
| |
| // Iterate over oop elements within [start, end), and metadata. |
| // Specialized for [T = oop] or [T = narrowOop]. |
| template <bool nv, typename T, class OopClosureType> |
| inline void oop_oop_iterate_range_specialized(objArrayOop a, OopClosureType* closure, int start, int end); |
| |
| public: |
| // Iterate over all oop elements. |
| template <bool nv, class OopClosureType> |
| inline void oop_oop_iterate_elements(objArrayOop a, OopClosureType* closure); |
| |
| private: |
| // Iterate over all oop elements. |
| // Specialized for [T = oop] or [T = narrowOop]. |
| template <bool nv, typename T, class OopClosureType> |
| inline void oop_oop_iterate_elements_specialized(objArrayOop a, OopClosureType* closure); |
| |
| // Iterate over all oop elements with indices within mr. |
| template <bool nv, class OopClosureType> |
| inline void oop_oop_iterate_elements_bounded(objArrayOop a, OopClosureType* closure, MemRegion mr); |
| |
| // Iterate over oop elements within [low, high).. |
| // Specialized for [T = oop] or [T = narrowOop]. |
| template <bool nv, typename T, class OopClosureType> |
| inline void oop_oop_iterate_elements_specialized_bounded(objArrayOop a, OopClosureType* closure, void* low, void* high); |
| |
| |
| 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 |
| |
| // JVM support |
| jint compute_modifier_flags(TRAPS) const; |
| |
| public: |
| // Printing |
| void print_on(outputStream* st) const; |
| void print_value_on(outputStream* st) const; |
| |
| void oop_print_value_on(oop obj, outputStream* st); |
| #ifndef PRODUCT |
| void oop_print_on (oop obj, outputStream* st); |
| #endif //PRODUCT |
| |
| const char* internal_name() const; |
| |
| // Verification |
| void verify_on(outputStream* st); |
| |
| void oop_verify_on(oop obj, outputStream* st); |
| }; |
| |
| #endif // SHARE_VM_OOPS_OBJARRAYKLASS_HPP |