1 /* 2 * Copyright (C) 2005 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_HARDWARE_BPHWBINDER_H 18 #define ANDROID_HARDWARE_BPHWBINDER_H 19 20 #include <hwbinder/IBinder.h> 21 #include <utils/KeyedVector.h> 22 #include <utils/threads.h> 23 24 // --------------------------------------------------------------------------- 25 namespace android { 26 namespace hardware { 27 28 class BpHwBinder : public IBinder 29 { 30 public: 31 BpHwBinder(int32_t handle); 32 handle()33 inline int32_t handle() const { return mHandle; } 34 35 virtual status_t transact( uint32_t code, 36 const Parcel& data, 37 Parcel* reply, 38 uint32_t flags = 0, 39 TransactCallback callback = nullptr); 40 41 virtual status_t linkToDeath(const sp<DeathRecipient>& recipient, 42 void* cookie = NULL, 43 uint32_t flags = 0); 44 virtual status_t unlinkToDeath( const wp<DeathRecipient>& recipient, 45 void* cookie = NULL, 46 uint32_t flags = 0, 47 wp<DeathRecipient>* outRecipient = NULL); 48 49 virtual void attachObject( const void* objectID, 50 void* object, 51 void* cleanupCookie, 52 object_cleanup_func func); 53 virtual void* findObject(const void* objectID) const; 54 virtual void detachObject(const void* objectID); 55 56 virtual BpHwBinder* remoteBinder(); 57 58 status_t setConstantData(const void* data, size_t size); 59 void sendObituary(); 60 61 class ObjectManager 62 { 63 public: 64 ObjectManager(); 65 ~ObjectManager(); 66 67 void attach( const void* objectID, 68 void* object, 69 void* cleanupCookie, 70 IBinder::object_cleanup_func func); 71 void* find(const void* objectID) const; 72 void detach(const void* objectID); 73 74 void kill(); 75 76 private: 77 ObjectManager(const ObjectManager&); 78 ObjectManager& operator=(const ObjectManager&); 79 80 struct entry_t 81 { 82 void* object; 83 void* cleanupCookie; 84 IBinder::object_cleanup_func func; 85 }; 86 87 KeyedVector<const void*, entry_t> mObjects; 88 }; 89 90 protected: 91 virtual ~BpHwBinder(); 92 virtual void onFirstRef(); 93 virtual void onLastStrongRef(const void* id); 94 virtual bool onIncStrongAttempted(uint32_t flags, const void* id); 95 96 private: 97 const int32_t mHandle; 98 99 struct Obituary { 100 wp<DeathRecipient> recipient; 101 void* cookie; 102 uint32_t flags; 103 }; 104 105 void reportOneDeath(const Obituary& obit); 106 bool isDescriptorCached() const; 107 108 mutable Mutex mLock; 109 volatile int32_t mAlive; 110 volatile int32_t mObitsSent; 111 Vector<Obituary>* mObituaries; 112 ObjectManager mObjects; 113 Parcel* mConstantData; 114 mutable String16 mDescriptorCache; 115 }; 116 117 }; // namespace hardware 118 }; // namespace android 119 120 // --------------------------------------------------------------------------- 121 122 #endif // ANDROID_HARDWARE_BPHWBINDER_H 123