1edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project/* 2edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 3edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 4edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * you may not use this file except in compliance with the License. 6edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * You may obtain a copy of the License at 7edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 8edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 10edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * See the License for the specific language governing permissions and 14edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * limitations under the License. 15edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project */ 16edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 17edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#ifndef ANDROID_MEMORY_HEAP_BASE_H 18edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#define ANDROID_MEMORY_HEAP_BASE_H 19edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 20edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <stdlib.h> 21edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <stdint.h> 22edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 23c5b2c0bf8007562536b822eb060fc54a01f8e08bMathias Agopian#include <binder/IMemory.h> 24edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 25edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 26edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectnamespace android { 27edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 28edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// --------------------------------------------------------------------------- 29edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 305728a92e29c1c9729017a82c5d0bc18fc1069923Anu Sundararajanclass MemoryHeapBase : public virtual BnMemoryHeap 31edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 32edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectpublic: 33edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project enum { 34edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project READ_ONLY = IMemoryHeap::READ_ONLY, 35edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // memory won't be mapped locally, but will be mapped in the remote 36edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // process. 370db1a8931bb24b4f240c19210e70844af8c1e9ffIliyan Malchev DONT_MAP_LOCALLY = 0x00000100, 380db1a8931bb24b4f240c19210e70844af8c1e9ffIliyan Malchev NO_CACHING = 0x00000200 39edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project }; 40edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 415728a92e29c1c9729017a82c5d0bc18fc1069923Anu Sundararajan /* 42edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * maps the memory referenced by fd. but DOESN'T take ownership 43edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * of the filedescriptor (it makes a copy with dup() 44edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project */ 45d4851d74ac9c737acda85f1fdbc028c68f481a36Benny Wong MemoryHeapBase(int fd, size_t size, uint32_t flags = 0, uint32_t offset = 0); 465728a92e29c1c9729017a82c5d0bc18fc1069923Anu Sundararajan 47edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project /* 48edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * maps memory from the given device 49edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project */ 50edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project MemoryHeapBase(const char* device, size_t size = 0, uint32_t flags = 0); 51edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 52edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project /* 53edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * maps memory from ashmem, with the given name for debugging 54edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project */ 55edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project MemoryHeapBase(size_t size, uint32_t flags = 0, char const* name = NULL); 56edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 57edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project virtual ~MemoryHeapBase(); 58edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 59edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project /* implement IMemoryHeap interface */ 60edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project virtual int getHeapID() const; 617b1905113712281c777b230648d3fbb69ae4f42cMathias Agopian 627b1905113712281c777b230648d3fbb69ae4f42cMathias Agopian /* virtual address of the heap. returns MAP_FAILED in case of error */ 63edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project virtual void* getBase() const; 647b1905113712281c777b230648d3fbb69ae4f42cMathias Agopian 65edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project virtual size_t getSize() const; 66edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project virtual uint32_t getFlags() const; 677b1905113712281c777b230648d3fbb69ae4f42cMathias Agopian virtual uint32_t getOffset() const; 68edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 69edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project const char* getDevice() const; 705728a92e29c1c9729017a82c5d0bc18fc1069923Anu Sundararajan 71edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project /* this closes this heap -- use carefully */ 72edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project void dispose(); 73edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 74edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project /* this is only needed as a workaround, use only if you know 75edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * what you are doing */ 76edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t setDevice(const char* device) { 77edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (mDevice == 0) 78edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mDevice = device; 79edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return mDevice ? NO_ERROR : ALREADY_EXISTS; 80edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 815728a92e29c1c9729017a82c5d0bc18fc1069923Anu Sundararajan 82edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectprotected: 83edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project MemoryHeapBase(); 84edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // init() takes ownership of fd 85edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t init(int fd, void *base, int size, 865728a92e29c1c9729017a82c5d0bc18fc1069923Anu Sundararajan int flags = 0, const char* device = NULL); 87edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 88edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectprivate: 89d4851d74ac9c737acda85f1fdbc028c68f481a36Benny Wong status_t mapfd(int fd, size_t size, uint32_t offset = 0); 90edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 91edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project int mFD; 92edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project size_t mSize; 93edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project void* mBase; 94edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project uint32_t mFlags; 95edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project const char* mDevice; 96edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project bool mNeedUnmap; 975728a92e29c1c9729017a82c5d0bc18fc1069923Anu Sundararajan uint32_t mOffset; 98edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; 99edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 100edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// --------------------------------------------------------------------------- 101edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; // namespace android 102edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 103edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#endif // ANDROID_MEMORY_HEAP_BASE_H 104