Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 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 | #define LOG_TAG "HidlMemoryCache" |
| 18 | #include "HidlMemoryCache.h" |
| 19 | #include <android/hidl/memory/1.0/IMemory.h> |
| 20 | #include <android/hidl/memory/token/1.0/IMemoryToken.h> |
| 21 | #include <hidlmemory/mapping.h> |
| 22 | #include <sys/mman.h> |
| 23 | #include <utils/Log.h> |
| 24 | |
| 25 | namespace android { |
| 26 | namespace hardware { |
| 27 | |
| 28 | using IMemoryToken = ::android::hidl::memory::token::V1_0::IMemoryToken; |
| 29 | using IMemory = ::android::hidl::memory::V1_0::IMemory; |
| 30 | |
Howard Chen | e79b60e | 2018-07-31 16:16:26 +0800 | [diff] [blame] | 31 | class MemoryDecorator : public virtual IMemory { |
Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 32 | public: |
Howard Chen | e79b60e | 2018-07-31 16:16:26 +0800 | [diff] [blame] | 33 | MemoryDecorator(const sp<IMemory>& heap) : mHeap(heap) {} |
| 34 | virtual ~MemoryDecorator() {} |
Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 35 | Return<void> update() override { return mHeap->update(); } |
Bernhard Rosenkränzer | 0c28fd2 | 2018-06-04 16:01:47 +0200 | [diff] [blame] | 36 | Return<void> read() override { return mHeap->read(); } |
Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 37 | Return<void> updateRange(uint64_t start, uint64_t length) override { |
| 38 | return mHeap->updateRange(start, length); |
| 39 | } |
| 40 | Return<void> readRange(uint64_t start, uint64_t length) override { |
| 41 | return mHeap->readRange(start, length); |
| 42 | } |
| 43 | Return<void> commit() override { return mHeap->commit(); } |
| 44 | |
| 45 | Return<void*> getPointer() override { return mHeap->getPointer(); } |
| 46 | Return<uint64_t> getSize() override { return mHeap->getSize(); } |
| 47 | |
| 48 | protected: |
| 49 | sp<IMemory> mHeap; |
| 50 | }; |
| 51 | |
Howard Chen | e79b60e | 2018-07-31 16:16:26 +0800 | [diff] [blame] | 52 | class MemoryCacheable : public virtual MemoryDecorator { |
Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 53 | public: |
Howard Chen | e79b60e | 2018-07-31 16:16:26 +0800 | [diff] [blame] | 54 | MemoryCacheable(const sp<IMemory>& heap, sp<IMemoryToken> key) |
| 55 | : MemoryDecorator(heap), mKey(key) {} |
| 56 | virtual ~MemoryCacheable() { HidlMemoryCache::getInstance()->flush(mKey); } |
Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 57 | |
| 58 | protected: |
| 59 | sp<IMemoryToken> mKey; |
| 60 | }; |
| 61 | |
Howard Chen | e79b60e | 2018-07-31 16:16:26 +0800 | [diff] [blame] | 62 | class MemoryBlockImpl : public virtual IMemory { |
Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 63 | public: |
Howard Chen | e79b60e | 2018-07-31 16:16:26 +0800 | [diff] [blame] | 64 | MemoryBlockImpl(const sp<IMemory>& heap, uint64_t size, uint64_t offset) |
| 65 | : mHeap(heap), mSize(size), mOffset(offset), mHeapSize(heap->getSize()) {} |
Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 66 | bool validRange(uint64_t start, uint64_t length) { |
Howard Chen | e79b60e | 2018-07-31 16:16:26 +0800 | [diff] [blame] | 67 | return (start + length <= mSize) && (start + length >= start) && |
| 68 | (mOffset + mSize <= mHeapSize); |
Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 69 | } |
Howard Chen | e79b60e | 2018-07-31 16:16:26 +0800 | [diff] [blame] | 70 | Return<void> readRange(uint64_t start, uint64_t length) override { |
Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 71 | if (!validRange(start, length)) { |
| 72 | ALOGE("IMemoryBlock::readRange: out of range"); |
Howard Chen | e79b60e | 2018-07-31 16:16:26 +0800 | [diff] [blame] | 73 | return Void(); |
Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 74 | } |
| 75 | return mHeap->readRange(mOffset + start, length); |
| 76 | } |
| 77 | Return<void> updateRange(uint64_t start, uint64_t length) override { |
| 78 | if (!validRange(start, length)) { |
| 79 | ALOGE("IMemoryBlock::updateRange: out of range"); |
| 80 | return Void(); |
| 81 | } |
| 82 | return mHeap->updateRange(mOffset + start, length); |
| 83 | } |
Howard Chen | e79b60e | 2018-07-31 16:16:26 +0800 | [diff] [blame] | 84 | Return<void> read() override { return this->readRange(0, mSize); } |
| 85 | Return<void> update() override { return this->updateRange(0, mSize); } |
| 86 | Return<void> commit() override { return mHeap->commit(); } |
Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 87 | Return<uint64_t> getSize() override { return mSize; } |
| 88 | Return<void*> getPointer() override { |
| 89 | void* p = mHeap->getPointer(); |
| 90 | return (static_cast<char*>(p) + mOffset); |
| 91 | } |
| 92 | |
| 93 | protected: |
Howard Chen | e79b60e | 2018-07-31 16:16:26 +0800 | [diff] [blame] | 94 | sp<IMemory> mHeap; |
Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 95 | uint64_t mSize; |
| 96 | uint64_t mOffset; |
| 97 | uint64_t mHeapSize; |
| 98 | }; |
| 99 | |
| 100 | sp<HidlMemoryCache> HidlMemoryCache::getInstance() { |
| 101 | static sp<HidlMemoryCache> instance = new HidlMemoryCache(); |
| 102 | return instance; |
| 103 | } |
| 104 | |
| 105 | sp<IMemory> HidlMemoryCache::fillLocked(const sp<IMemoryToken>& key) { |
| 106 | sp<IMemory> memory = nullptr; |
| 107 | Return<void> ret = key->get( |
Howard Chen | e79b60e | 2018-07-31 16:16:26 +0800 | [diff] [blame] | 108 | [&](const hidl_memory& mem) { memory = new MemoryCacheable(mapMemory(mem), key); }); |
Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 109 | if (!ret.isOk()) { |
| 110 | ALOGE("HidlMemoryCache::fill: cannot IMemoryToken::get."); |
| 111 | return nullptr; |
| 112 | } |
| 113 | mCached[key] = memory; |
| 114 | return memory; |
| 115 | } |
| 116 | |
| 117 | sp<IMemory> HidlMemoryCache::map(const MemoryBlock& memblk) { |
| 118 | sp<IMemoryToken> token = memblk.token; |
| 119 | sp<IMemory> heap = fetch(token); |
| 120 | if (heap == nullptr) { |
| 121 | return nullptr; |
| 122 | } |
Howard Chen | e79b60e | 2018-07-31 16:16:26 +0800 | [diff] [blame] | 123 | return new MemoryBlockImpl(heap, memblk.size, memblk.offset); |
Howard Chen | 4904f96 | 2017-12-08 18:11:05 +0800 | [diff] [blame] | 124 | } |
| 125 | |
| 126 | } // namespace hardware |
| 127 | } // namespace android |