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 #include <sys/mman.h>
18
19 #include "AshmemMemory.h"
20
21 namespace android {
22 namespace hidl {
23 namespace memory {
24 namespace V1_0 {
25 namespace implementation {
26
AshmemMemory(const hidl_memory & memory,void * data)27 AshmemMemory::AshmemMemory(const hidl_memory& memory, void* data)
28 : mMemory(memory),
29 mData(data)
30 {}
31
~AshmemMemory()32 AshmemMemory::~AshmemMemory()
33 {
34 // TODO: Move implementation to mapper class
35 munmap(mData, mMemory.size());
36 }
37
38 // Methods from ::android::hidl::memory::V1_0::IMemory follow.
update()39 Return<void> AshmemMemory::update() {
40 // NOOP (since non-remoted memory)
41 return Void();
42 }
43
updateRange(uint64_t,uint64_t)44 Return<void> AshmemMemory::updateRange(uint64_t /* start */, uint64_t /* length */) {
45 // NOOP (since non-remoted memory)
46 return Void();
47 }
48
read()49 Return<void> AshmemMemory::read() {
50 // NOOP (since non-remoted memory)
51 return Void();
52 }
53
readRange(uint64_t,uint64_t)54 Return<void> AshmemMemory::readRange(uint64_t /* start */, uint64_t /* length */) {
55 // NOOP (since non-remoted memory)
56 return Void();
57 }
58
commit()59 Return<void> AshmemMemory::commit() {
60 // NOOP (since non-remoted memory)
61 return Void();
62 }
63
getPointer()64 Return<void*> AshmemMemory::getPointer() {
65 return mData;
66 }
67
getSize()68 Return<uint64_t> AshmemMemory::getSize() {
69 return mMemory.size();
70 }
71
72 } // namespace implementation
73 } // namespace V1_0
74 } // namespace memory
75 } // namespace hidl
76 } // namespace android
77