1 /* 2 * Copyright (C) 2020 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 ANDROID_MEDIA_TRANSCODING_UID_POLICY_H 18 #define ANDROID_MEDIA_TRANSCODING_UID_POLICY_H 19 20 #include <aidl/android/media/ITranscodingClient.h> 21 #include <aidl/android/media/ITranscodingClientCallback.h> 22 #include <media/UidPolicyInterface.h> 23 #include <sys/types.h> 24 #include <utils/Condition.h> 25 26 #include <map> 27 #include <mutex> 28 #include <unordered_map> 29 #include <unordered_set> 30 31 struct AActivityManager_UidImportanceListener; 32 33 namespace android { 34 35 // Observer for UID lifecycle and provide information about the uid's app 36 // priority used by the session controller. 37 class TranscodingUidPolicy : public UidPolicyInterface { 38 public: 39 explicit TranscodingUidPolicy(); 40 ~TranscodingUidPolicy(); 41 42 // UidPolicyInterface 43 bool isUidOnTop(uid_t uid) override; 44 void registerMonitorUid(uid_t uid) override; 45 void unregisterMonitorUid(uid_t uid) override; 46 std::unordered_set<uid_t> getTopUids() const override; 47 void setCallback(const std::shared_ptr<UidPolicyCallbackInterface>& cb) override; 48 // ~UidPolicyInterface 49 50 private: 51 void onUidStateChanged(uid_t uid, int32_t procState); 52 void registerSelf(); 53 void unregisterSelf(); 54 int32_t getProcState_l(uid_t uid) NO_THREAD_SAFETY_ANALYSIS; 55 void updateTopUid_l() NO_THREAD_SAFETY_ANALYSIS; 56 57 static void OnUidImportance(uid_t uid, int32_t uidImportance, void* cookie); 58 59 struct ResourceManagerClient; 60 mutable Mutex mUidLock; 61 AActivityManager_UidImportanceListener* mUidObserver; 62 63 bool mRegistered GUARDED_BY(mUidLock); 64 int32_t mTopUidState GUARDED_BY(mUidLock); 65 std::unordered_map<uid_t, int32_t> mUidStateMap GUARDED_BY(mUidLock); 66 std::map<int32_t, std::unordered_set<uid_t>> mStateUidMap GUARDED_BY(mUidLock); 67 std::weak_ptr<UidPolicyCallbackInterface> mUidPolicyCallback; 68 }; // class TranscodingUidPolicy 69 70 } // namespace android 71 #endif // ANDROID_MEDIA_TRANSCODING_SERVICE_H 72