1 /* 2 * Copyright (C) 2016 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_HIDL_ASHMEM_MEMORY_V1_0_MEMORY_H 18 #define ANDROID_HIDL_ASHMEM_MEMORY_V1_0_MEMORY_H 19 20 #include <android/hidl/memory/1.0/IMemory.h> 21 #include <hidl/MQDescriptor.h> 22 #include <hidl/Status.h> 23 24 namespace android { 25 namespace hidl { 26 namespace memory { 27 namespace V1_0 { 28 namespace implementation { 29 30 using ::android::hidl::memory::V1_0::IMemory; 31 using ::android::hardware::hidl_array; 32 using ::android::hardware::hidl_memory; 33 using ::android::hardware::hidl_string; 34 using ::android::hardware::hidl_vec; 35 using ::android::hardware::Return; 36 using ::android::hardware::Void; 37 using ::android::sp; 38 39 struct AshmemMemory : public IMemory { 40 41 AshmemMemory(const hidl_memory& memory, void* mappedMemory); 42 ~AshmemMemory(); 43 44 // Methods from ::android::hidl::memory::V1_0::IMemory follow. 45 Return<void> update() override; 46 Return<void> updateRange(uint64_t start, uint64_t length) override; 47 Return<void> read() override; 48 Return<void> readRange(uint64_t start, uint64_t length) override; 49 Return<void> commit() override; 50 Return<void*> getPointer() override; 51 Return<uint64_t> getSize() override; 52 53 private: 54 // Holding onto hidl_memory reference because it contains 55 // handle and size, and handle will also be required for 56 // the remoted case. 57 hidl_memory mMemory; 58 59 // Mapped memory in process. 60 void* mData; 61 }; 62 63 } // namespace implementation 64 } // namespace V1_0 65 } // namespace memory 66 } // namespace hidl 67 } // namespace android 68 69 #endif // ANDROID_HIDL_ASHMEM_MEMORY_V1_0_MEMORY_H 70
