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Elliott Hughes11e45072011-08-16 17:40:46 -07001/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
Brian Carlstromfc0e3212013-07-17 14:40:12 -070017#ifndef ART_RUNTIME_REFERENCE_TABLE_H_
18#define ART_RUNTIME_REFERENCE_TABLE_H_
Elliott Hughes11e45072011-08-16 17:40:46 -070019
20#include <cstddef>
21#include <iosfwd>
22#include <string>
23#include <vector>
24
Mathieu Chartierbad02672014-08-25 13:08:22 -070025#include "base/allocator.h"
Ian Rogers719d1a32014-03-06 12:13:39 -080026#include "base/mutex.h"
Hiroshi Yamauchi94f7b492014-07-22 18:08:23 -070027#include "gc_root.h"
Mathieu Chartier83c8ee02014-01-28 14:50:23 -080028#include "object_callbacks.h"
Elliott Hughes410c0c82011-09-01 17:58:25 -070029
Elliott Hughes11e45072011-08-16 17:40:46 -070030namespace art {
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080031namespace mirror {
Elliott Hughes11e45072011-08-16 17:40:46 -070032class Object;
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080033} // namespace mirror
Elliott Hughes11e45072011-08-16 17:40:46 -070034
Elliott Hughes6c1a3942011-08-17 15:00:06 -070035// Maintain a table of references. Used for JNI monitor references and
36// JNI pinned array references.
Carl Shapiro5b1982d2011-08-16 18:35:19 -070037//
38// None of the functions are synchronized.
Elliott Hughes11e45072011-08-16 17:40:46 -070039class ReferenceTable {
40 public:
41 ReferenceTable(const char* name, size_t initial_size, size_t max_size);
Elliott Hughesc1674ed2011-08-25 18:09:09 -070042 ~ReferenceTable();
Elliott Hughes11e45072011-08-16 17:40:46 -070043
Hiroshi Yamauchiea2e1bd2014-06-18 13:47:35 -070044 void Add(mirror::Object* obj) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Elliott Hughes11e45072011-08-16 17:40:46 -070045
Hiroshi Yamauchiea2e1bd2014-06-18 13:47:35 -070046 void Remove(mirror::Object* obj) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Elliott Hughes11e45072011-08-16 17:40:46 -070047
48 size_t Size() const;
49
Hiroshi Yamauchiea2e1bd2014-06-18 13:47:35 -070050 void Dump(std::ostream& os) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Elliott Hughes11e45072011-08-16 17:40:46 -070051
Mathieu Chartiere34fa1d2015-01-14 14:55:47 -080052 void VisitRoots(RootCallback* visitor, void* arg, const RootInfo& root_info);
Elliott Hughes410c0c82011-09-01 17:58:25 -070053
Elliott Hughes11e45072011-08-16 17:40:46 -070054 private:
Mathieu Chartierbad02672014-08-25 13:08:22 -070055 typedef std::vector<GcRoot<mirror::Object>,
56 TrackingAllocator<GcRoot<mirror::Object>, kAllocatorTagReferenceTable>> Table;
Hiroshi Yamauchiea2e1bd2014-06-18 13:47:35 -070057 static void Dump(std::ostream& os, Table& entries)
Ian Rogersb726dcb2012-09-05 08:57:23 -070058 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Brian Carlstrom7934ac22013-07-26 10:54:15 -070059 friend class IndirectReferenceTable; // For Dump.
Elliott Hughes6c1a3942011-08-17 15:00:06 -070060
Elliott Hughes11e45072011-08-16 17:40:46 -070061 std::string name_;
Elliott Hughes410c0c82011-09-01 17:58:25 -070062 Table entries_;
Elliott Hughes11e45072011-08-16 17:40:46 -070063 size_t max_size_;
64};
65
66} // namespace art
67
Brian Carlstromfc0e3212013-07-17 14:40:12 -070068#endif // ART_RUNTIME_REFERENCE_TABLE_H_