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 virtual uint32_t getOffset() const = 0; 47 48 // these are there just for backward source compatibility heapID()49 int32_t heapID() const { return getHeapID(); } base()50 void* base() const { return getBase(); } virtualSize()51 size_t virtualSize() const { return getSize(); } 52 }; 53 54 class BnMemoryHeap : public BnInterface<IMemoryHeap> 55 { 56 public: 57 virtual status_t onTransact( 58 uint32_t code, 59 const Parcel& data, 60 Parcel* reply, 61 uint32_t flags = 0); 62 63 BnMemoryHeap(); 64 protected: 65 virtual ~BnMemoryHeap(); 66 }; 67 68 // ---------------------------------------------------------------------------- 69 70 class IMemory : public IInterface 71 { 72 public: 73 DECLARE_META_INTERFACE(Memory) 74 75 virtual sp<IMemoryHeap> getMemory(ssize_t* offset=0, size_t* size=0) const = 0; 76 77 // helpers 78 void* fastPointer(const sp<IBinder>& heap, ssize_t offset) const; 79 void* pointer() const; 80 size_t size() const; 81 ssize_t offset() const; 82 }; 83 84 class BnMemory : public BnInterface<IMemory> 85 { 86 public: 87 virtual status_t onTransact( 88 uint32_t code, 89 const Parcel& data, 90 Parcel* reply, 91 uint32_t flags = 0); 92 93 BnMemory(); 94 protected: 95 virtual ~BnMemory(); 96 }; 97 98 // ---------------------------------------------------------------------------- 99 100 }; // namespace android 101 102 #endif // ANDROID_IMEMORY_H 103