19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#ifndef ANDROID_MEMORY_HEAP_BASE_H 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define ANDROID_MEMORY_HEAP_BASE_H 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <stdlib.h> 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <stdint.h> 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <utils/IMemory.h> 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectnamespace android { 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project// --------------------------------------------------------------------------- 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectclass MemoryHeapBase : public virtual BnMemoryHeap 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic: 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project enum { 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project READ_ONLY = IMemoryHeap::READ_ONLY, 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MAP_ONCE = IMemoryHeap::MAP_ONCE, 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // memory won't be mapped locally, but will be mapped in the remote 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // process. 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project DONT_MAP_LOCALLY = 0x00000100 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * maps the memory referenced by fd. but DOESN'T take ownership 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * of the filedescriptor (it makes a copy with dup() 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MemoryHeapBase(int fd, size_t size, uint32_t flags = 0); 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * maps memory from the given device 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MemoryHeapBase(const char* device, size_t size = 0, uint32_t flags = 0); 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * maps memory from ashmem, with the given name for debugging 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MemoryHeapBase(size_t size, uint32_t flags = 0, char const* name = NULL); 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project virtual ~MemoryHeapBase(); 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* implement IMemoryHeap interface */ 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project virtual int getHeapID() const; 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project virtual void* getBase() const; 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project virtual size_t getSize() const; 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project virtual uint32_t getFlags() const; 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project const char* getDevice() const; 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* this closes this heap -- use carefully */ 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void dispose(); 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* this is only needed as a workaround, use only if you know 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * what you are doing */ 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project status_t setDevice(const char* device) { 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mDevice == 0) 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDevice = device; 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mDevice ? NO_ERROR : ALREADY_EXISTS; 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectprotected: 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MemoryHeapBase(); 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // init() takes ownership of fd 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project status_t init(int fd, void *base, int size, 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int flags = 0, const char* device = NULL); 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectprivate: 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project status_t mapfd(int fd, size_t size); 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mFD; 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project size_t mSize; 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void* mBase; 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project uint32_t mFlags; 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project const char* mDevice; 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bool mNeedUnmap; 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project}; 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project// --------------------------------------------------------------------------- 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project}; // namespace android 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#endif // ANDROID_MEMORY_HEAP_BASE_H 99