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 28namespace android { 29 30// ---------------------------------------------------------------------------- 31 32class IMemoryHeap : public IInterface 33{ 34public: 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 49 int32_t heapID() const { return getHeapID(); } 50 void* base() const { return getBase(); } 51 size_t virtualSize() const { return getSize(); } 52}; 53 54class BnMemoryHeap : public BnInterface<IMemoryHeap> 55{ 56public: 57 virtual status_t onTransact( 58 uint32_t code, 59 const Parcel& data, 60 Parcel* reply, 61 uint32_t flags = 0); 62 63 BnMemoryHeap(); 64protected: 65 virtual ~BnMemoryHeap(); 66}; 67 68// ---------------------------------------------------------------------------- 69 70class IMemory : public IInterface 71{ 72public: 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 84class BnMemory : public BnInterface<IMemory> 85{ 86public: 87 virtual status_t onTransact( 88 uint32_t code, 89 const Parcel& data, 90 Parcel* reply, 91 uint32_t flags = 0); 92 93 BnMemory(); 94protected: 95 virtual ~BnMemory(); 96}; 97 98// ---------------------------------------------------------------------------- 99 100}; // namespace android 101 102#endif // ANDROID_IMEMORY_H 103