author | coleenp |
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/* |
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* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef SHARE_VM_OOPS_OBJARRAYKLASS_HPP |
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#define SHARE_VM_OOPS_OBJARRAYKLASS_HPP |
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#include "classfile/classLoaderData.hpp" |
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#include "memory/specialized_oop_closures.hpp" |
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#include "oops/arrayKlass.hpp" |
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// objArrayKlass is the klass for objArrays |
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class objArrayKlass : public arrayKlass { |
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friend class VMStructs; |
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private: |
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Klass* _element_klass; // The klass of the elements of this array type |
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Klass* _bottom_klass; // The one-dimensional type (InstanceKlass or typeArrayKlass) |
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// Constructor |
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objArrayKlass(int n, KlassHandle element_klass, Symbol* name); |
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static objArrayKlass* allocate(ClassLoaderData* loader_data, int n, KlassHandle klass_handle, Symbol* name, TRAPS); |
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public: |
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// For dummy objects |
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objArrayKlass() {} |
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// Instance variables |
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Klass* element_klass() const { return _element_klass; } |
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void set_element_klass(Klass* k) { _element_klass = k; } |
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Klass** element_klass_addr() { return &_element_klass; } |
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Klass* bottom_klass() const { return _bottom_klass; } |
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void set_bottom_klass(Klass* k) { _bottom_klass = k; } |
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Klass** bottom_klass_addr() { return &_bottom_klass; } |
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// Compiler/Interpreter offset |
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static ByteSize element_klass_offset() { return in_ByteSize(offset_of(objArrayKlass, _element_klass)); } |
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// Dispatched operation |
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bool can_be_primary_super_slow() const; |
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GrowableArray<Klass*>* compute_secondary_supers(int num_extra_slots); |
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bool compute_is_subtype_of(Klass* k); |
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bool oop_is_objArray_slow() const { return true; } |
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int oop_size(oop obj) const; |
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// Allocation |
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static Klass* allocate_objArray_klass(ClassLoaderData* loader_data, |
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int n, KlassHandle element_klass, TRAPS); |
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objArrayOop allocate(int length, TRAPS); |
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oop multi_allocate(int rank, jint* sizes, TRAPS); |
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// Copying |
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void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS); |
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// Compute protection domain |
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oop protection_domain() { return Klass::cast(bottom_klass())->protection_domain(); } |
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private: |
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// Either oop or narrowOop depending on UseCompressedOops. |
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// must be called from within objArrayKlass.cpp |
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template <class T> void do_copy(arrayOop s, T* src, arrayOop d, |
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T* dst, int length, TRAPS); |
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// Returns the objArrayKlass for n'th dimension. |
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virtual Klass* array_klass_impl(bool or_null, int n, TRAPS); |
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// Returns the array class with this class as element type. |
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virtual Klass* array_klass_impl(bool or_null, TRAPS); |
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public: |
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// Casting from Klass* |
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static objArrayKlass* cast(Klass* k) { |
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assert(k->oop_is_objArray(), "cast to objArrayKlass"); |
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return (objArrayKlass*) k; |
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} |
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// Sizing |
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static int header_size() { return sizeof(objArrayKlass)/HeapWordSize; } |
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int size() const { return arrayKlass::static_size(header_size()); } |
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// Initialization (virtual from Klass) |
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void initialize(TRAPS); |
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// Garbage collection |
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void oop_follow_contents(oop obj); |
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inline void oop_follow_contents(oop obj, int index); |
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template <class T> inline void objarray_follow_contents(oop obj, int index); |
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int oop_adjust_pointers(oop obj); |
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// Parallel Scavenge and Parallel Old |
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PARALLEL_GC_DECLS |
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#ifndef SERIALGC |
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inline void oop_follow_contents(ParCompactionManager* cm, oop obj, int index); |
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template <class T> inline void |
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objarray_follow_contents(ParCompactionManager* cm, oop obj, int index); |
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#endif // !SERIALGC |
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// Iterators |
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int oop_oop_iterate(oop obj, ExtendedOopClosure* blk) { |
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return oop_oop_iterate_v(obj, blk); |
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} |
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int oop_oop_iterate_m(oop obj, ExtendedOopClosure* blk, MemRegion mr) { |
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return oop_oop_iterate_v_m(obj, blk, mr); |
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} |
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#define ObjArrayKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \ |
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int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \ |
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int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, \ |
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MemRegion mr); \ |
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int oop_oop_iterate_range##nv_suffix(oop obj, OopClosureType* blk, \ |
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int start, int end); |
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ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DECL) |
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ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DECL) |
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// JVM support |
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jint compute_modifier_flags(TRAPS) const; |
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// Printing |
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void print_on(outputStream* st) const; |
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void print_value_on(outputStream* st) const; |
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void oop_print_value_on(oop obj, outputStream* st); |
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#ifndef PRODUCT |
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void oop_print_on (oop obj, outputStream* st); |
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#endif //PRODUCT |
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const char* internal_name() const; |
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// Verification |
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void verify_on(outputStream* st); |
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void oop_verify_on(oop obj, outputStream* st); |
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}; |
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#endif // SHARE_VM_OOPS_OBJARRAYKLASS_HPP |