1 /* 2 * Copyright (C) 2023 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 BERBERIS_GUEST_OS_PRIMITIVES_GUEST_THREAD_MAP_H_ 18 #define BERBERIS_GUEST_OS_PRIMITIVES_GUEST_THREAD_MAP_H_ 19 20 #include <sys/types.h> // pid_t 21 #include <mutex> 22 23 #include "berberis/base/forever_map.h" 24 #include "berberis/guest_os_primitives/guest_thread.h" 25 26 namespace berberis { 27 28 class GuestThreadMap { 29 public: 30 static GuestThreadMap* GetInstance(); 31 32 void ResetThreadTable(pid_t tid, GuestThread* thread); 33 void InsertThread(pid_t tid, GuestThread* thread); 34 GuestThread* RemoveThread(pid_t tid); 35 GuestThread* FindThread(pid_t tid); 36 37 // TODO(b/280551726): Replace template with function that accepts a function arg. 38 template <typename F> ForEachThread(const F & f)39 void ForEachThread(const F& f) { 40 std::lock_guard<std::mutex> lock(mutex_); 41 for (const auto& v : map_) { 42 f(v.first, v.second); 43 } 44 } 45 46 private: 47 GuestThreadMap() = default; 48 GuestThreadMap(const GuestThreadMap&) = delete; 49 GuestThreadMap& operator=(const GuestThreadMap&) = delete; 50 51 friend GuestThreadMap* NewForever<GuestThreadMap>(); 52 53 ForeverMap<pid_t, GuestThread*> map_; 54 std::mutex mutex_; 55 }; 56 57 } // namespace berberis 58 59 #endif // BERBERIS_GUEST_OS_PRIMITIVES_GUEST_THREAD_MAP_H_ 60