Mercurial > hg > graal-compiler
diff src/share/vm/oops/arrayKlass.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | 4ce7240d622c |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/oops/arrayKlass.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,134 @@ +/* + * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +// arrayKlass is the abstract baseclass for all array classes + +class arrayKlass: public Klass { + friend class VMStructs; + private: + int _dimension; // This is n'th-dimensional array. + klassOop _higher_dimension; // Refers the (n+1)'th-dimensional array (if present). + klassOop _lower_dimension; // Refers the (n-1)'th-dimensional array (if present). + int _vtable_len; // size of vtable for this klass + juint _alloc_size; // allocation profiling support + oop _component_mirror; // component type, as a java/lang/Class + + public: + // Testing operation + bool oop_is_array() const { return true; } + + // Instance variables + int dimension() const { return _dimension; } + void set_dimension(int dimension) { _dimension = dimension; } + + klassOop higher_dimension() const { return _higher_dimension; } + void set_higher_dimension(klassOop k) { oop_store_without_check((oop*) &_higher_dimension, (oop) k); } + oop* adr_higher_dimension() { return (oop*)&this->_higher_dimension;} + + klassOop lower_dimension() const { return _lower_dimension; } + void set_lower_dimension(klassOop k) { oop_store_without_check((oop*) &_lower_dimension, (oop) k); } + oop* adr_lower_dimension() { return (oop*)&this->_lower_dimension;} + + // Allocation profiling support + juint alloc_size() const { return _alloc_size; } + void set_alloc_size(juint n) { _alloc_size = n; } + + // offset of first element, including any padding for the sake of alignment + int array_header_in_bytes() const { return layout_helper_header_size(layout_helper()); } + int log2_element_size() const { return layout_helper_log2_element_size(layout_helper()); } + // type of elements (T_OBJECT for both oop arrays and array-arrays) + BasicType element_type() const { return layout_helper_element_type(layout_helper()); } + + oop component_mirror() const { return _component_mirror; } + void set_component_mirror(oop m) { oop_store((oop*) &_component_mirror, m); } + oop* adr_component_mirror() { return (oop*)&this->_component_mirror;} + + // Compiler/Interpreter offset + static ByteSize component_mirror_offset() { return byte_offset_of(arrayKlass, _component_mirror); } + + virtual klassOop java_super() const;//{ return SystemDictionary::object_klass(); } + + // Allocation + // Sizes points to the first dimension of the array, subsequent dimensions + // are always in higher memory. The callers of these set that up. + virtual oop multi_allocate(int rank, jint* sizes, TRAPS); + objArrayOop allocate_arrayArray(int n, int length, TRAPS); + + // Lookup operations + methodOop uncached_lookup_method(symbolOop name, symbolOop signature) const; + + // Casting from klassOop + static arrayKlass* cast(klassOop k) { + Klass* kp = k->klass_part(); + assert(kp->null_vtbl() || kp->oop_is_array(), "cast to arrayKlass"); + return (arrayKlass*) kp; + } + + objArrayOop compute_secondary_supers(int num_extra_slots, TRAPS); + bool compute_is_subtype_of(klassOop k); + + // Sizing + static int header_size() { return oopDesc::header_size() + sizeof(arrayKlass)/HeapWordSize; } + int object_size(int header_size) const; + + bool object_is_parsable() const { return _vtable_len > 0; } + + // Java vtable + klassVtable* vtable() const; // return new klassVtable + int vtable_length() const { return _vtable_len; } + static int base_vtable_length() { return Universe::base_vtable_size(); } + void set_vtable_length(int len) { assert(len == base_vtable_length(), "bad length"); _vtable_len = len; } + protected: + inline intptr_t* start_of_vtable() const; + + public: + // Iterators + void array_klasses_do(void f(klassOop k)); + void with_array_klasses_do(void f(klassOop k)); + + // Shared creation method + static arrayKlassHandle base_create_array_klass( + const Klass_vtbl& vtbl, + int header_size, KlassHandle klass, + TRAPS); + // Return a handle. + static void complete_create_array_klass(arrayKlassHandle k, KlassHandle super_klass, TRAPS); + + public: + // jvm support + jint compute_modifier_flags(TRAPS) const; + + public: + // JVMTI support + jint jvmti_class_status() const; + +#ifndef PRODUCT + public: + // Printing + void oop_print_on(oop obj, outputStream* st); +#endif + public: + // Verification + void oop_verify_on(oop obj, outputStream* st); +};