1 /* 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 17 #ifndef ART_RUNTIME_REFERENCE_TABLE_H_ 18 #define ART_RUNTIME_REFERENCE_TABLE_H_ 19 20 #include <cstddef> 21 #include <iosfwd> 22 #include <string> 23 #include <vector> 24 25 #include "locks.h" 26 #include "root_visitor.h" 27 28 namespace art { 29 namespace mirror { 30 class Object; 31 } // namespace mirror 32 33 // Maintain a table of references. Used for JNI monitor references and 34 // JNI pinned array references. 35 // 36 // None of the functions are synchronized. 37 class ReferenceTable { 38 public: 39 ReferenceTable(const char* name, size_t initial_size, size_t max_size); 40 ~ReferenceTable(); 41 42 void Add(const mirror::Object* obj); 43 44 void Remove(const mirror::Object* obj); 45 46 size_t Size() const; 47 48 void Dump(std::ostream& os) const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 49 50 void VisitRoots(RootVisitor* visitor, void* arg); 51 52 private: 53 typedef std::vector<const mirror::Object*> Table; 54 static void Dump(std::ostream& os, const Table& entries) 55 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 56 friend class IndirectReferenceTable; // For Dump. 57 58 std::string name_; 59 Table entries_; 60 size_t max_size_; 61 }; 62 63 } // namespace art 64 65 #endif // ART_RUNTIME_REFERENCE_TABLE_H_ 66