--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/oops/arrayKlass.hpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,180 @@
+/*
+ * 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_ARRAYKLASS_HPP
+#define SHARE_VM_OOPS_ARRAYKLASS_HPP
+
+#include "memory/universe.hpp"
+#include "oops/klass.hpp"
+
+class fieldDescriptor;
+class klassVtable;
+
+// ArrayKlass is the abstract baseclass for all array classes
+
+class ArrayKlass: public Klass {
+ friend class VMStructs;
+ private:
+ // If you add a new field that points to any metaspace object, you
+ // must add this field to ArrayKlass::metaspace_pointers_do().
+ int _dimension; // This is n'th-dimensional array.
+ Klass* volatile _higher_dimension; // Refers the (n+1)'th-dimensional array (if present).
+ Klass* volatile _lower_dimension; // Refers the (n-1)'th-dimensional array (if present).
+
+ protected:
+ // Constructors
+ // The constructor with the Symbol argument does the real array
+ // initialization, the other is a dummy
+ ArrayKlass(Symbol* name);
+ ArrayKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for cds"); }
+
+ public:
+ // Testing operation
+ DEBUG_ONLY(bool is_array_klass_slow() const { return true; })
+
+ // Instance variables
+ int dimension() const { return _dimension; }
+ void set_dimension(int dimension) { _dimension = dimension; }
+
+ Klass* higher_dimension() const { return _higher_dimension; }
+ inline Klass* higher_dimension_acquire() const; // load with acquire semantics
+ void set_higher_dimension(Klass* k) { _higher_dimension = k; }
+ inline void release_set_higher_dimension(Klass* k); // store with release semantics
+ Klass** adr_higher_dimension() { return (Klass**)&this->_higher_dimension;}
+
+ Klass* lower_dimension() const { return _lower_dimension; }
+ void set_lower_dimension(Klass* k) { _lower_dimension = k; }
+ Klass** adr_lower_dimension() { return (Klass**)&this->_lower_dimension;}
+
+ // 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()); }
+
+ virtual Klass* 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);
+
+ // find field according to JVM spec 5.4.3.2, returns the klass in which the field is defined
+ Klass* find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const;
+
+ // Lookup operations
+ Method* uncached_lookup_method(const Symbol* name,
+ const Symbol* signature,
+ OverpassLookupMode overpass_mode) const;
+
+ static ArrayKlass* cast(Klass* k) {
+ return const_cast<ArrayKlass*>(cast(const_cast<const Klass*>(k)));
+ }
+
+ static const ArrayKlass* cast(const Klass* k) {
+ assert(k->is_array_klass(), "cast to ArrayKlass");
+ return static_cast<const ArrayKlass*>(k);
+ }
+
+ GrowableArray<Klass*>* compute_secondary_supers(int num_extra_slots);
+ bool compute_is_subtype_of(Klass* k);
+
+ // Sizing
+ static int static_size(int header_size);
+
+ virtual void metaspace_pointers_do(MetaspaceClosure* iter);
+
+#if INCLUDE_SERVICES
+ virtual void collect_statistics(KlassSizeStats *sz) const {
+ Klass::collect_statistics(sz);
+ // Do nothing for now, but remember to modify if you add new
+ // stuff to ArrayKlass.
+ }
+#endif
+
+ // Iterators
+ void array_klasses_do(void f(Klass* k));
+ void array_klasses_do(void f(Klass* k, TRAPS), TRAPS);
+
+ // Return a handle.
+ static void complete_create_array_klass(ArrayKlass* k, Klass* super_klass, ModuleEntry* module, TRAPS);
+
+
+ // jvm support
+ jint compute_modifier_flags(TRAPS) const;
+
+ // JVMTI support
+ jint jvmti_class_status() const;
+
+ // CDS support - remove and restore oops from metadata. Oops are not shared.
+ virtual void remove_unshareable_info();
+ virtual void remove_java_mirror();
+ virtual void restore_unshareable_info(ClassLoaderData* loader_data, Handle protection_domain, TRAPS);
+
+ // Printing
+ void print_on(outputStream* st) const;
+ void print_value_on(outputStream* st) const;
+
+ void oop_print_on(oop obj, outputStream* st);
+
+ // Verification
+ void verify_on(outputStream* st);
+
+ void oop_verify_on(oop obj, outputStream* st);
+};
+
+// Array oop iteration macros for declarations.
+// Used to generate the declarations in the *ArrayKlass header files.
+
+#define OOP_OOP_ITERATE_DECL_RANGE(OopClosureType, nv_suffix) \
+ void oop_oop_iterate_range##nv_suffix(oop obj, OopClosureType* closure, int start, int end);
+
+#if INCLUDE_ALL_GCS
+// Named NO_BACKWARDS because the definition used by *ArrayKlass isn't reversed, see below.
+#define OOP_OOP_ITERATE_DECL_NO_BACKWARDS(OopClosureType, nv_suffix) \
+ void oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure);
+#endif // INCLUDE_ALL_GCS
+
+
+// Array oop iteration macros for definitions.
+// Used to generate the definitions in the *ArrayKlass.inline.hpp files.
+
+#define OOP_OOP_ITERATE_DEFN_RANGE(KlassType, OopClosureType, nv_suffix) \
+ \
+void KlassType::oop_oop_iterate_range##nv_suffix(oop obj, OopClosureType* closure, int start, int end) { \
+ oop_oop_iterate_range<nvs_to_bool(nv_suffix)>(obj, closure, start, end); \
+}
+
+#if INCLUDE_ALL_GCS
+#define OOP_OOP_ITERATE_DEFN_NO_BACKWARDS(KlassType, OopClosureType, nv_suffix) \
+void KlassType::oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) { \
+ /* No reverse implementation ATM. */ \
+ oop_oop_iterate<nvs_to_bool(nv_suffix)>(obj, closure); \
+}
+#else
+#define OOP_OOP_ITERATE_DEFN_NO_BACKWARDS(KlassType, OopClosureType, nv_suffix)
+#endif
+
+#endif // SHARE_VM_OOPS_ARRAYKLASS_HPP