--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/ci/ciObjectFactory.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,150 @@
+/*
+ * Copyright (c) 1999, 2013, 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_CI_CIOBJECTFACTORY_HPP
+#define SHARE_VM_CI_CIOBJECTFACTORY_HPP
+
+#include "ci/ciClassList.hpp"
+#include "ci/ciObject.hpp"
+#include "utilities/growableArray.hpp"
+
+// ciObjectFactory
+//
+// This class handles requests for the creation of new instances
+// of ciObject and its subclasses.  It contains a caching mechanism
+// which ensures that for each oop, at most one ciObject is created.
+// This invariant allows efficient implementation of ciObject.
+class ciObjectFactory : public ResourceObj {
+  friend class VMStructs;
+  friend class ciEnv;
+
+private:
+  static volatile bool _initialized;
+  static GrowableArray<ciMetadata*>* _shared_ci_metadata;
+  static ciSymbol*                 _shared_ci_symbols[];
+  static int                       _shared_ident_limit;
+
+  Arena*                    _arena;
+  GrowableArray<ciMetadata*>*        _ci_metadata;
+  GrowableArray<ciMethod*>* _unloaded_methods;
+  GrowableArray<ciKlass*>* _unloaded_klasses;
+  GrowableArray<ciInstance*>* _unloaded_instances;
+  GrowableArray<ciReturnAddress*>* _return_addresses;
+  GrowableArray<ciSymbol*>* _symbols;  // keep list of symbols created
+  int                       _next_ident;
+
+public:
+  struct NonPermObject : public ResourceObj {
+    ciObject*      _object;
+    NonPermObject* _next;
+
+    inline NonPermObject(NonPermObject* &bucket, oop key, ciObject* object);
+    ciObject*     object()  { return _object; }
+    NonPermObject* &next()  { return _next; }
+  };
+private:
+  enum { NON_PERM_BUCKETS = 61 };
+  NonPermObject* _non_perm_bucket[NON_PERM_BUCKETS];
+  int _non_perm_count;
+
+  static int metadata_compare(Metadata* const& key, ciMetadata* const& elt);
+
+  ciObject* create_new_object(oop o);
+  ciMetadata* create_new_metadata(Metadata* o);
+
+  void ensure_metadata_alive(ciMetadata* m);
+
+  static bool is_equal(NonPermObject* p, oop key) {
+    return p->object()->get_oop() == key;
+  }
+
+  NonPermObject* &find_non_perm(oop key);
+  void insert_non_perm(NonPermObject* &where, oop key, ciObject* obj);
+
+  void init_ident_of(ciBaseObject* obj);
+
+  Arena* arena() { return _arena; }
+
+  void print_contents_impl();
+
+  ciInstance* get_unloaded_instance(ciInstanceKlass* klass);
+
+public:
+  static bool is_initialized() { return _initialized; }
+
+  static void initialize();
+  void init_shared_objects();
+  void remove_symbols();
+
+  ciObjectFactory(Arena* arena, int expected_size);
+
+  // Get the ciObject corresponding to some oop.
+  ciObject* get(oop key);
+  ciMetadata* get_metadata(Metadata* key);
+  ciSymbol* get_symbol(Symbol* key);
+
+  // Get the ciSymbol corresponding to one of the vmSymbols.
+  static ciSymbol* vm_symbol_at(int index);
+
+  // Get the ciMethod representing an unloaded/unfound method.
+  ciMethod* get_unloaded_method(ciInstanceKlass* holder,
+                                ciSymbol*        name,
+                                ciSymbol*        signature,
+                                ciInstanceKlass* accessor);
+
+  // Get a ciKlass representing an unloaded klass.
+  ciKlass* get_unloaded_klass(ciKlass* accessing_klass,
+                              ciSymbol* name,
+                              bool create_if_not_found);
+
+  // Get a ciInstance representing an unresolved klass mirror.
+  ciInstance* get_unloaded_klass_mirror(ciKlass* type);
+
+  // Get a ciInstance representing an unresolved method handle constant.
+  ciInstance* get_unloaded_method_handle_constant(ciKlass*  holder,
+                                                  ciSymbol* name,
+                                                  ciSymbol* signature,
+                                                  int       ref_kind);
+
+  // Get a ciInstance representing an unresolved method type constant.
+  ciInstance* get_unloaded_method_type_constant(ciSymbol* signature);
+
+
+  ciInstance* get_unloaded_object_constant();
+
+  // Get the ciMethodData representing the methodData for a method
+  // with none.
+  ciMethodData* get_empty_methodData();
+
+  ciReturnAddress* get_return_address(int bci);
+
+  GrowableArray<ciMetadata*>* get_ci_metadata() const { return _ci_metadata; }
+  // RedefineClasses support
+  void metadata_do(void f(Metadata*));
+
+  void print_contents();
+  void print();
+};
+
+#endif // SHARE_VM_CI_CIOBJECTFACTORY_HPP