Stan Iliev | d495f43 | 2017-10-09 15:49:32 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2017 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 "ShaderCache.h" |
| 18 | #include <algorithm> |
| 19 | #include <log/log.h> |
| 20 | #include <thread> |
| 21 | #include "FileBlobCache.h" |
| 22 | #include "utils/TraceUtils.h" |
| 23 | |
| 24 | namespace android { |
| 25 | namespace uirenderer { |
| 26 | namespace skiapipeline { |
| 27 | |
| 28 | // Cache size limits. |
| 29 | static const size_t maxKeySize = 1024; |
| 30 | static const size_t maxValueSize = 64 * 1024; |
| 31 | static const size_t maxTotalSize = 512 * 1024; |
| 32 | |
| 33 | ShaderCache::ShaderCache() { |
| 34 | // There is an "incomplete FileBlobCache type" compilation error, if ctor is moved to header. |
| 35 | } |
| 36 | |
| 37 | ShaderCache ShaderCache::sCache; |
| 38 | |
| 39 | ShaderCache& ShaderCache::get() { |
| 40 | return sCache; |
| 41 | } |
| 42 | |
| 43 | void ShaderCache::initShaderDiskCache() { |
| 44 | ATRACE_NAME("initShaderDiskCache"); |
| 45 | std::lock_guard<std::mutex> lock(mMutex); |
| 46 | if (mFilename.length() > 0) { |
| 47 | mBlobCache.reset(new FileBlobCache(maxKeySize, maxValueSize, maxTotalSize, mFilename)); |
| 48 | mInitialized = true; |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | void ShaderCache::setFilename(const char* filename) { |
| 53 | std::lock_guard<std::mutex> lock(mMutex); |
| 54 | mFilename = filename; |
| 55 | } |
| 56 | |
| 57 | BlobCache* ShaderCache::getBlobCacheLocked() { |
| 58 | LOG_ALWAYS_FATAL_IF(!mInitialized, "ShaderCache has not been initialized"); |
| 59 | return mBlobCache.get(); |
| 60 | } |
| 61 | |
| 62 | sk_sp<SkData> ShaderCache::load(const SkData& key) { |
| 63 | ATRACE_NAME("ShaderCache::load"); |
| 64 | size_t keySize = key.size(); |
| 65 | std::lock_guard<std::mutex> lock(mMutex); |
| 66 | if (!mInitialized) { |
Stan Iliev | d495f43 | 2017-10-09 15:49:32 -0400 | [diff] [blame] | 67 | return nullptr; |
| 68 | } |
| 69 | |
| 70 | // mObservedBlobValueSize is reasonably big to avoid memory reallocation |
| 71 | // Allocate a buffer with malloc. SkData takes ownership of that allocation and will call free. |
| 72 | void* valueBuffer = malloc(mObservedBlobValueSize); |
| 73 | if (!valueBuffer) { |
| 74 | return nullptr; |
| 75 | } |
| 76 | BlobCache* bc = getBlobCacheLocked(); |
| 77 | size_t valueSize = bc->get(key.data(), keySize, valueBuffer, mObservedBlobValueSize); |
| 78 | int maxTries = 3; |
| 79 | while (valueSize > mObservedBlobValueSize && maxTries > 0) { |
| 80 | mObservedBlobValueSize = std::min(valueSize, maxValueSize); |
| 81 | valueBuffer = realloc(valueBuffer, mObservedBlobValueSize); |
| 82 | if (!valueBuffer) { |
| 83 | return nullptr; |
| 84 | } |
| 85 | valueSize = bc->get(key.data(), keySize, valueBuffer, mObservedBlobValueSize); |
| 86 | maxTries--; |
| 87 | } |
| 88 | if (!valueSize) { |
| 89 | free(valueBuffer); |
| 90 | return nullptr; |
| 91 | } |
| 92 | if (valueSize > mObservedBlobValueSize) { |
| 93 | ALOGE("ShaderCache::load value size is too big %d", (int) valueSize); |
| 94 | free(valueBuffer); |
| 95 | return nullptr; |
| 96 | } |
| 97 | return SkData::MakeFromMalloc(valueBuffer, valueSize); |
| 98 | } |
| 99 | |
| 100 | void ShaderCache::store(const SkData& key, const SkData& data) { |
| 101 | ATRACE_NAME("ShaderCache::store"); |
| 102 | std::lock_guard<std::mutex> lock(mMutex); |
| 103 | |
| 104 | if (!mInitialized) { |
Stan Iliev | d495f43 | 2017-10-09 15:49:32 -0400 | [diff] [blame] | 105 | return; |
| 106 | } |
| 107 | |
| 108 | size_t valueSize = data.size(); |
| 109 | size_t keySize = key.size(); |
| 110 | if (keySize == 0 || valueSize == 0 || valueSize >= maxValueSize) { |
| 111 | ALOGW("ShaderCache::store: sizes %d %d not allowed", (int)keySize, (int)valueSize); |
| 112 | return; |
| 113 | } |
| 114 | |
| 115 | const void* value = data.data(); |
| 116 | |
| 117 | BlobCache* bc = getBlobCacheLocked(); |
| 118 | bc->set(key.data(), keySize, value, valueSize); |
| 119 | |
| 120 | if (!mSavePending && mDeferredSaveDelay > 0) { |
| 121 | mSavePending = true; |
| 122 | std::thread deferredSaveThread([this]() { |
| 123 | sleep(mDeferredSaveDelay); |
| 124 | std::lock_guard<std::mutex> lock(mMutex); |
| 125 | ATRACE_NAME("ShaderCache::saveToDisk"); |
| 126 | if (mInitialized && mBlobCache) { |
| 127 | mBlobCache->writeToFile(); |
| 128 | } |
| 129 | mSavePending = false; |
| 130 | }); |
| 131 | deferredSaveThread.detach(); |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | } /* namespace skiapipeline */ |
| 136 | } /* namespace uirenderer */ |
| 137 | } /* namespace android */ |