--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/oops/objArrayKlass.hpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,206 @@
+/*
+ * 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_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;
+ friend class JVMCIVMStructs;
+ private:
+ // If you add a new field that points to any metaspace object, you
+ // must add this field to ObjArrayKlass::metaspace_pointers_do().
+ 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, Klass* element_klass, Symbol* name);
+ static ObjArrayKlass* allocate(ClassLoaderData* loader_data, int n, Klass* k, 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; }
+
+ ModuleEntry* module() const;
+ PackageEntry* package() const;
+
+ // 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, Klass* 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(); }
+
+ virtual void metaspace_pointers_do(MetaspaceClosure* iter);
+
+ 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)/wordSize; }
+ int size() const { return ArrayKlass::static_size(header_size()); }
+
+ // Initialization (virtual from Klass)
+ void initialize(TRAPS);
+
+ // GC specific object visitors
+ //
+#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, ParCompactionManager* cm);
+#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