1 /* 2 * Copyright (C) 2016 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_BASE_MUTATOR_LOCKED_DUMPABLE_H_ 18 #define ART_RUNTIME_BASE_MUTATOR_LOCKED_DUMPABLE_H_ 19 20 #include "base/locks.h" 21 #include "thread-current-inl.h" 22 23 namespace art { 24 25 template<typename T> 26 class MutatorLockedDumpable { 27 public: MutatorLockedDumpable(T & value)28 explicit MutatorLockedDumpable(T& value) REQUIRES_SHARED(Locks::mutator_lock_) : value_(value) {} 29 Dump(std::ostream & os)30 void Dump(std::ostream& os) const REQUIRES_SHARED(Locks::mutator_lock_) { 31 value_.Dump(os); 32 } 33 34 private: 35 const T& value_; 36 37 DISALLOW_COPY_AND_ASSIGN(MutatorLockedDumpable); 38 }; 39 40 // template<typename T> 41 // std::ostream& operator<<(std::ostream& os, const MutatorLockedDumpable<T>& rhs) 42 // // TODO: should be REQUIRES_SHARED(Locks::mutator_lock_) however annotalysis 43 // // currently fails for this. 44 // NO_THREAD_SAFETY_ANALYSIS; 45 46 template<typename T> 47 inline std::ostream& operator<<(std::ostream& os, const MutatorLockedDumpable<T>& rhs) 48 NO_THREAD_SAFETY_ANALYSIS { 49 Locks::mutator_lock_->AssertSharedHeld(Thread::Current()); 50 rhs.Dump(os); 51 return os; 52 } 53 54 } // namespace art 55 56 #endif // ART_RUNTIME_BASE_MUTATOR_LOCKED_DUMPABLE_H_ 57