1 /* 2 * Copyright (C) 2007 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_IMEMORY_H 18 #define ANDROID_IMEMORY_H 19 20 #include <stdint.h> 21 #include <sys/types.h> 22 #include <sys/mman.h> 23 24 #include <utils/RefBase.h> 25 #include <utils/Errors.h> 26 #include <binder/IInterface.h> 27 28 namespace android { 29 30 // ---------------------------------------------------------------------------- 31 32 class IMemoryHeap : public IInterface 33 { 34 public: 35 DECLARE_META_INTERFACE(MemoryHeap); 36 37 // flags returned by getFlags() 38 enum { 39 READ_ONLY = 0x00000001 40 }; 41 42 virtual int getHeapID() const = 0; 43 virtual void* getBase() const = 0; 44 virtual size_t getSize() const = 0; 45 virtual uint32_t getFlags() const = 0; 46 47 // these are there just for backward source compatibility heapID()48 int32_t heapID() const { return getHeapID(); } base()49 void* base() const { return getBase(); } virtualSize()50 size_t virtualSize() const { return getSize(); } 51 }; 52 53 class BnMemoryHeap : public BnInterface<IMemoryHeap> 54 { 55 public: 56 virtual status_t onTransact( 57 uint32_t code, 58 const Parcel& data, 59 Parcel* reply, 60 uint32_t flags = 0); 61 62 BnMemoryHeap(); 63 protected: 64 virtual ~BnMemoryHeap(); 65 }; 66 67 // ---------------------------------------------------------------------------- 68 69 class IMemory : public IInterface 70 { 71 public: 72 DECLARE_META_INTERFACE(Memory); 73 74 virtual sp<IMemoryHeap> getMemory(ssize_t* offset=0, size_t* size=0) const = 0; 75 76 // helpers 77 void* fastPointer(const sp<IBinder>& heap, ssize_t offset) const; 78 void* pointer() const; 79 size_t size() const; 80 ssize_t offset() const; 81 }; 82 83 class BnMemory : public BnInterface<IMemory> 84 { 85 public: 86 virtual status_t onTransact( 87 uint32_t code, 88 const Parcel& data, 89 Parcel* reply, 90 uint32_t flags = 0); 91 92 BnMemory(); 93 protected: 94 virtual ~BnMemory(); 95 }; 96 97 // ---------------------------------------------------------------------------- 98 99 }; // namespace android 100 101 #endif // ANDROID_IMEMORY_H 102