--- /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