author | trims |
Thu, 27 May 2010 19:08:38 -0700 | |
changeset 5547 | f4b087cbb361 |
parent 2105 | 347008ce7984 |
child 7397 | 5b173b4ca846 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997, 2009, 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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// A typeArrayKlass is the klass of a typeArray |
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// It contains the type and size of the elements |
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class typeArrayKlass : public arrayKlass { |
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friend class VMStructs; |
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private: |
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jint _max_length; // maximum number of elements allowed in an array |
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public: |
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// instance variables |
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jint max_length() { return _max_length; } |
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void set_max_length(jint m) { _max_length = m; } |
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// testers |
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bool oop_is_typeArray_slow() const { return true; } |
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// klass allocation |
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DEFINE_ALLOCATE_PERMANENT(typeArrayKlass); |
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static klassOop create_klass(BasicType type, int scale, const char* name_str, |
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TRAPS); |
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static inline klassOop create_klass(BasicType type, int scale, TRAPS) { |
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return create_klass(type, scale, external_name(type), CHECK_NULL); |
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} |
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int oop_size(oop obj) const; |
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int klass_oop_size() const { return object_size(); } |
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bool compute_is_subtype_of(klassOop k); |
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// Allocation |
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typeArrayOop allocate(int length, TRAPS); |
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typeArrayOop allocate_permanent(int length, TRAPS); // used for class file structures |
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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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// Iteration |
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int oop_oop_iterate(oop obj, OopClosure* blk); |
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int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); |
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// Garbage collection |
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void oop_follow_contents(oop obj); |
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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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protected: |
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// Find n'th dimensional array |
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virtual klassOop 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 klassOop array_klass_impl(bool or_null, TRAPS); |
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public: |
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// Casting from klassOop |
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static typeArrayKlass* cast(klassOop k) { |
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assert(k->klass_part()->oop_is_typeArray_slow(), "cast to typeArrayKlass"); |
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return (typeArrayKlass*) k->klass_part(); |
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} |
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// Naming |
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static const char* external_name(BasicType type); |
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// Sizing |
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static int header_size() { return oopDesc::header_size() + sizeof(typeArrayKlass)/HeapWordSize; } |
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int object_size() const { return arrayKlass::object_size(header_size()); } |
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// Initialization (virtual from Klass) |
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void initialize(TRAPS); |
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private: |
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// Helpers |
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static klassOop array_klass_impl(typeArrayKlassHandle h_this, bool or_null, int n, TRAPS); |
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#ifndef PRODUCT |
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public: |
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// Printing |
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void oop_print_on(oop obj, outputStream* st); |
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#endif |
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public: |
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const char* internal_name() const; |
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}; |