Home | History | Annotate | Download | only in binder
      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 ANDROID_BINDER_H
     18 #define ANDROID_BINDER_H
     19 
     20 #include <atomic>
     21 #include <stdint.h>
     22 #include <binder/IBinder.h>
     23 
     24 // ---------------------------------------------------------------------------
     25 namespace android {
     26 
     27 class BBinder : public IBinder
     28 {
     29 public:
     30                         BBinder();
     31 
     32     virtual const String16& getInterfaceDescriptor() const;
     33     virtual bool        isBinderAlive() const;
     34     virtual status_t    pingBinder();
     35     virtual status_t    dump(int fd, const Vector<String16>& args);
     36 
     37     virtual status_t    transact(   uint32_t code,
     38                                     const Parcel& data,
     39                                     Parcel* reply,
     40                                     uint32_t flags = 0);
     41 
     42     virtual status_t    linkToDeath(const sp<DeathRecipient>& recipient,
     43                                     void* cookie = NULL,
     44                                     uint32_t flags = 0);
     45 
     46     virtual status_t    unlinkToDeath(  const wp<DeathRecipient>& recipient,
     47                                         void* cookie = NULL,
     48                                         uint32_t flags = 0,
     49                                         wp<DeathRecipient>* outRecipient = NULL);
     50 
     51     virtual void        attachObject(   const void* objectID,
     52                                         void* object,
     53                                         void* cleanupCookie,
     54                                         object_cleanup_func func);
     55     virtual void*       findObject(const void* objectID) const;
     56     virtual void        detachObject(const void* objectID);
     57 
     58     virtual BBinder*    localBinder();
     59 
     60 protected:
     61     virtual             ~BBinder();
     62 
     63     virtual status_t    onTransact( uint32_t code,
     64                                     const Parcel& data,
     65                                     Parcel* reply,
     66                                     uint32_t flags = 0);
     67 
     68 private:
     69                         BBinder(const BBinder& o);
     70             BBinder&    operator=(const BBinder& o);
     71 
     72     class Extras;
     73 
     74     std::atomic<Extras*> mExtras;
     75             void*       mReserved0;
     76 };
     77 
     78 // ---------------------------------------------------------------------------
     79 
     80 class BpRefBase : public virtual RefBase
     81 {
     82 protected:
     83                             BpRefBase(const sp<IBinder>& o);
     84     virtual                 ~BpRefBase();
     85     virtual void            onFirstRef();
     86     virtual void            onLastStrongRef(const void* id);
     87     virtual bool            onIncStrongAttempted(uint32_t flags, const void* id);
     88 
     89     inline  IBinder*        remote()                { return mRemote; }
     90     inline  IBinder*        remote() const          { return mRemote; }
     91 
     92 private:
     93                             BpRefBase(const BpRefBase& o);
     94     BpRefBase&              operator=(const BpRefBase& o);
     95 
     96     IBinder* const          mRemote;
     97     RefBase::weakref_type*  mRefs;
     98     std::atomic<int32_t>    mState;
     99 };
    100 
    101 }; // namespace android
    102 
    103 // ---------------------------------------------------------------------------
    104 
    105 #endif // ANDROID_BINDER_H
    106