reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
mtklein | 67a3271 | 2014-07-10 06:03:46 -0700 | [diff] [blame] | 8 | #include "SkChecksum.h" |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 9 | #include "SkResourceCache.h" |
reed@google.com | d94697c | 2013-07-24 14:31:33 +0000 | [diff] [blame] | 10 | #include "SkMipMap.h" |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 11 | #include "SkPixelRef.h" |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 12 | |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 13 | // This can be defined by the caller's build system |
| 14 | //#define SK_USE_DISCARDABLE_SCALEDIMAGECACHE |
| 15 | |
| 16 | #ifndef SK_DISCARDABLEMEMORY_SCALEDIMAGECACHE_COUNT_LIMIT |
| 17 | # define SK_DISCARDABLEMEMORY_SCALEDIMAGECACHE_COUNT_LIMIT 1024 |
| 18 | #endif |
| 19 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 20 | #ifndef SK_DEFAULT_IMAGE_CACHE_LIMIT |
| 21 | #define SK_DEFAULT_IMAGE_CACHE_LIMIT (2 * 1024 * 1024) |
| 22 | #endif |
| 23 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 24 | void SkResourceCache::Key::init(size_t length) { |
reed | 4f987e9 | 2014-08-20 13:41:56 -0700 | [diff] [blame] | 25 | SkASSERT(SkAlign4(length) == length); |
| 26 | // 2 is fCount32 and fHash |
| 27 | fCount32 = SkToS32(2 + (length >> 2)); |
| 28 | // skip both of our fields whe computing the murmur |
| 29 | fHash = SkChecksum::Murmur3(this->as32() + 2, (fCount32 - 2) << 2); |
| 30 | } |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 31 | |
reed@google.com | 5d1e558 | 2013-07-25 14:36:15 +0000 | [diff] [blame] | 32 | #include "SkTDynamicHash.h" |
| 33 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 34 | class SkResourceCache::Hash : |
| 35 | public SkTDynamicHash<SkResourceCache::Rec, SkResourceCache::Key> {}; |
commit-bot@chromium.org | 158f646 | 2014-04-02 17:03:09 +0000 | [diff] [blame] | 36 | |
reed@google.com | 5d1e558 | 2013-07-25 14:36:15 +0000 | [diff] [blame] | 37 | |
| 38 | /////////////////////////////////////////////////////////////////////////////// |
| 39 | |
reed@google.com | b8d17fe | 2013-07-25 17:42:24 +0000 | [diff] [blame] | 40 | // experimental hash to speed things up |
reed@google.com | ea348cb | 2013-07-25 17:50:37 +0000 | [diff] [blame] | 41 | #define USE_HASH |
reed@google.com | 5d1e558 | 2013-07-25 14:36:15 +0000 | [diff] [blame] | 42 | |
commit-bot@chromium.org | 7585479 | 2013-10-29 19:55:00 +0000 | [diff] [blame] | 43 | #if !defined(USE_HASH) |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 44 | static inline SkResourceCache::Rec* find_rec_in_list( |
| 45 | SkResourceCache::Rec* head, const Key & key) { |
| 46 | SkResourceCache::Rec* rec = head; |
commit-bot@chromium.org | 7585479 | 2013-10-29 19:55:00 +0000 | [diff] [blame] | 47 | while ((rec != NULL) && (rec->fKey != key)) { |
| 48 | rec = rec->fNext; |
| 49 | } |
| 50 | return rec; |
| 51 | } |
| 52 | #endif |
| 53 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 54 | void SkResourceCache::init() { |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 55 | fHead = NULL; |
| 56 | fTail = NULL; |
reed@google.com | 5d1e558 | 2013-07-25 14:36:15 +0000 | [diff] [blame] | 57 | #ifdef USE_HASH |
| 58 | fHash = new Hash; |
| 59 | #else |
| 60 | fHash = NULL; |
| 61 | #endif |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 62 | fTotalBytesUsed = 0; |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 63 | fCount = 0; |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 64 | fSingleAllocationByteLimit = 0; |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 65 | fAllocator = NULL; |
| 66 | |
| 67 | // One of these should be explicit set by the caller after we return. |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 68 | fTotalByteLimit = 0; |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 69 | fDiscardableFactory = NULL; |
| 70 | } |
| 71 | |
| 72 | #include "SkDiscardableMemory.h" |
| 73 | |
| 74 | class SkOneShotDiscardablePixelRef : public SkPixelRef { |
| 75 | public: |
commit-bot@chromium.org | 227c246 | 2014-01-24 18:33:07 +0000 | [diff] [blame] | 76 | SK_DECLARE_INST_COUNT(SkOneShotDiscardablePixelRef) |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 77 | // Ownership of the discardablememory is transfered to the pixelref |
| 78 | SkOneShotDiscardablePixelRef(const SkImageInfo&, SkDiscardableMemory*, size_t rowBytes); |
| 79 | ~SkOneShotDiscardablePixelRef(); |
| 80 | |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 81 | protected: |
reed@google.com | d0419b1 | 2014-01-06 17:08:27 +0000 | [diff] [blame] | 82 | virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE; |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 83 | virtual void onUnlockPixels() SK_OVERRIDE; |
| 84 | virtual size_t getAllocatedSizeInBytes() const SK_OVERRIDE; |
| 85 | |
| 86 | private: |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 87 | SkDiscardableMemory* fDM; |
| 88 | size_t fRB; |
| 89 | bool fFirstTime; |
| 90 | |
| 91 | typedef SkPixelRef INHERITED; |
| 92 | }; |
| 93 | |
| 94 | SkOneShotDiscardablePixelRef::SkOneShotDiscardablePixelRef(const SkImageInfo& info, |
| 95 | SkDiscardableMemory* dm, |
| 96 | size_t rowBytes) |
| 97 | : INHERITED(info) |
| 98 | , fDM(dm) |
| 99 | , fRB(rowBytes) |
| 100 | { |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 101 | SkASSERT(dm->data()); |
| 102 | fFirstTime = true; |
| 103 | } |
| 104 | |
| 105 | SkOneShotDiscardablePixelRef::~SkOneShotDiscardablePixelRef() { |
| 106 | SkDELETE(fDM); |
| 107 | } |
| 108 | |
reed@google.com | d0419b1 | 2014-01-06 17:08:27 +0000 | [diff] [blame] | 109 | bool SkOneShotDiscardablePixelRef::onNewLockPixels(LockRec* rec) { |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 110 | if (fFirstTime) { |
| 111 | // we're already locked |
reed@google.com | c83a91f | 2013-12-13 13:41:14 +0000 | [diff] [blame] | 112 | SkASSERT(fDM->data()); |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 113 | fFirstTime = false; |
reed@google.com | d0419b1 | 2014-01-06 17:08:27 +0000 | [diff] [blame] | 114 | goto SUCCESS; |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 115 | } |
commit-bot@chromium.org | 281713e | 2013-12-12 18:08:08 +0000 | [diff] [blame] | 116 | |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 117 | // A previous call to onUnlock may have deleted our DM, so check for that |
| 118 | if (NULL == fDM) { |
reed@google.com | d0419b1 | 2014-01-06 17:08:27 +0000 | [diff] [blame] | 119 | return false; |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | if (!fDM->lock()) { |
| 123 | // since it failed, we delete it now, to free-up the resource |
| 124 | delete fDM; |
| 125 | fDM = NULL; |
reed@google.com | d0419b1 | 2014-01-06 17:08:27 +0000 | [diff] [blame] | 126 | return false; |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 127 | } |
reed@google.com | d0419b1 | 2014-01-06 17:08:27 +0000 | [diff] [blame] | 128 | |
| 129 | SUCCESS: |
| 130 | rec->fPixels = fDM->data(); |
| 131 | rec->fColorTable = NULL; |
| 132 | rec->fRowBytes = fRB; |
| 133 | return true; |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 134 | } |
| 135 | |
| 136 | void SkOneShotDiscardablePixelRef::onUnlockPixels() { |
| 137 | SkASSERT(!fFirstTime); |
reed@google.com | c83a91f | 2013-12-13 13:41:14 +0000 | [diff] [blame] | 138 | fDM->unlock(); |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 139 | } |
| 140 | |
| 141 | size_t SkOneShotDiscardablePixelRef::getAllocatedSizeInBytes() const { |
reed@google.com | d0419b1 | 2014-01-06 17:08:27 +0000 | [diff] [blame] | 142 | return this->info().getSafeSize(fRB); |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 143 | } |
| 144 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 145 | class SkResourceCacheDiscardableAllocator : public SkBitmap::Allocator { |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 146 | public: |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 147 | SkResourceCacheDiscardableAllocator(SkResourceCache::DiscardableFactory factory) { |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 148 | SkASSERT(factory); |
| 149 | fFactory = factory; |
| 150 | } |
| 151 | |
| 152 | virtual bool allocPixelRef(SkBitmap*, SkColorTable*) SK_OVERRIDE; |
skia.committer@gmail.com | cf0803b | 2013-12-10 07:02:03 +0000 | [diff] [blame] | 153 | |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 154 | private: |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 155 | SkResourceCache::DiscardableFactory fFactory; |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 156 | }; |
| 157 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 158 | bool SkResourceCacheDiscardableAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) { |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 159 | size_t size = bitmap->getSize(); |
sugoi | c197c8a | 2014-07-03 10:44:26 -0700 | [diff] [blame] | 160 | uint64_t size64 = bitmap->computeSize64(); |
| 161 | if (0 == size || size64 > (uint64_t)size) { |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 162 | return false; |
| 163 | } |
| 164 | |
| 165 | SkDiscardableMemory* dm = fFactory(size); |
| 166 | if (NULL == dm) { |
| 167 | return false; |
| 168 | } |
| 169 | |
reed@google.com | 900ecf2 | 2014-02-20 20:55:37 +0000 | [diff] [blame] | 170 | // can we relax this? |
commit-bot@chromium.org | 28fcae2 | 2014-04-11 17:15:40 +0000 | [diff] [blame] | 171 | if (kN32_SkColorType != bitmap->colorType()) { |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 172 | return false; |
| 173 | } |
| 174 | |
reed@google.com | 900ecf2 | 2014-02-20 20:55:37 +0000 | [diff] [blame] | 175 | SkImageInfo info = bitmap->info(); |
commit-bot@chromium.org | e13af71 | 2014-01-13 20:39:14 +0000 | [diff] [blame] | 176 | bitmap->setPixelRef(SkNEW_ARGS(SkOneShotDiscardablePixelRef, |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 177 | (info, dm, bitmap->rowBytes())))->unref(); |
| 178 | bitmap->lockPixels(); |
| 179 | return bitmap->readyToDraw(); |
| 180 | } |
| 181 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 182 | SkResourceCache::SkResourceCache(DiscardableFactory factory) { |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 183 | this->init(); |
| 184 | fDiscardableFactory = factory; |
| 185 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 186 | fAllocator = SkNEW_ARGS(SkResourceCacheDiscardableAllocator, (factory)); |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 187 | } |
| 188 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 189 | SkResourceCache::SkResourceCache(size_t byteLimit) { |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 190 | this->init(); |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 191 | fTotalByteLimit = byteLimit; |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 192 | } |
| 193 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 194 | SkResourceCache::~SkResourceCache() { |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 195 | SkSafeUnref(fAllocator); |
| 196 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 197 | Rec* rec = fHead; |
| 198 | while (rec) { |
| 199 | Rec* next = rec->fNext; |
| 200 | SkDELETE(rec); |
| 201 | rec = next; |
| 202 | } |
reed@google.com | 5d1e558 | 2013-07-25 14:36:15 +0000 | [diff] [blame] | 203 | delete fHash; |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 204 | } |
| 205 | |
commit-bot@chromium.org | 7585479 | 2013-10-29 19:55:00 +0000 | [diff] [blame] | 206 | //////////////////////////////////////////////////////////////////////////////// |
| 207 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 208 | const SkResourceCache::Rec* SkResourceCache::findAndLock(const Key& key) { |
reed@google.com | 5d1e558 | 2013-07-25 14:36:15 +0000 | [diff] [blame] | 209 | #ifdef USE_HASH |
| 210 | Rec* rec = fHash->find(key); |
| 211 | #else |
commit-bot@chromium.org | 7585479 | 2013-10-29 19:55:00 +0000 | [diff] [blame] | 212 | Rec* rec = find_rec_in_list(fHead, key); |
reed@google.com | 5d1e558 | 2013-07-25 14:36:15 +0000 | [diff] [blame] | 213 | #endif |
reed@google.com | 5d1e558 | 2013-07-25 14:36:15 +0000 | [diff] [blame] | 214 | if (rec) { |
| 215 | this->moveToHead(rec); // for our LRU |
| 216 | rec->fLockCount += 1; |
| 217 | } |
| 218 | return rec; |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 219 | } |
| 220 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 221 | const SkResourceCache::Rec* SkResourceCache::addAndLock(Rec* rec) { |
commit-bot@chromium.org | 7585479 | 2013-10-29 19:55:00 +0000 | [diff] [blame] | 222 | SkASSERT(rec); |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 223 | // See if we already have this key (racy inserts, etc.) |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 224 | const Rec* existing = this->findAndLock(rec->getKey()); |
bsalomon | 49f085d | 2014-09-05 13:34:00 -0700 | [diff] [blame] | 225 | if (existing) { |
robertphillips@google.com | 5db04df | 2013-12-18 18:48:08 +0000 | [diff] [blame] | 226 | SkDELETE(rec); |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 227 | return existing; |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 228 | } |
| 229 | |
commit-bot@chromium.org | 7585479 | 2013-10-29 19:55:00 +0000 | [diff] [blame] | 230 | this->addToHead(rec); |
| 231 | SkASSERT(1 == rec->fLockCount); |
| 232 | #ifdef USE_HASH |
| 233 | SkASSERT(fHash); |
| 234 | fHash->add(rec); |
| 235 | #endif |
| 236 | // We may (now) be overbudget, so see if we need to purge something. |
| 237 | this->purgeAsNeeded(); |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 238 | return rec; |
commit-bot@chromium.org | 7585479 | 2013-10-29 19:55:00 +0000 | [diff] [blame] | 239 | } |
| 240 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 241 | void SkResourceCache::add(Rec* rec) { |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 242 | SkASSERT(rec); |
| 243 | // See if we already have this key (racy inserts, etc.) |
| 244 | const Rec* existing = this->findAndLock(rec->getKey()); |
bsalomon | 49f085d | 2014-09-05 13:34:00 -0700 | [diff] [blame] | 245 | if (existing) { |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 246 | SkDELETE(rec); |
| 247 | this->unlock(existing); |
| 248 | return; |
| 249 | } |
| 250 | |
| 251 | this->addToHead(rec); |
| 252 | SkASSERT(1 == rec->fLockCount); |
| 253 | #ifdef USE_HASH |
| 254 | SkASSERT(fHash); |
| 255 | fHash->add(rec); |
| 256 | #endif |
| 257 | this->unlock(rec); |
reed@google.com | d94697c | 2013-07-24 14:31:33 +0000 | [diff] [blame] | 258 | } |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 259 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 260 | void SkResourceCache::unlock(SkResourceCache::ID id) { |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 261 | SkASSERT(id); |
| 262 | |
| 263 | #ifdef SK_DEBUG |
| 264 | { |
| 265 | bool found = false; |
| 266 | Rec* rec = fHead; |
| 267 | while (rec != NULL) { |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 268 | if (rec == id) { |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 269 | found = true; |
| 270 | break; |
| 271 | } |
| 272 | rec = rec->fNext; |
| 273 | } |
| 274 | SkASSERT(found); |
| 275 | } |
| 276 | #endif |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 277 | const Rec* rec = id; |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 278 | SkASSERT(rec->fLockCount > 0); |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 279 | // We're under our lock, and we're the only possible mutator, so unconsting is fine. |
| 280 | const_cast<Rec*>(rec)->fLockCount -= 1; |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 281 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 282 | // we may have been over-budget, but now have released something, so check |
| 283 | // if we should purge. |
| 284 | if (0 == rec->fLockCount) { |
| 285 | this->purgeAsNeeded(); |
| 286 | } |
| 287 | } |
| 288 | |
danakj | 790ffe3 | 2014-09-11 10:49:52 -0700 | [diff] [blame^] | 289 | void SkResourceCache::remove(Rec* rec) { |
| 290 | SkASSERT(0 == rec->fLockCount); |
| 291 | |
| 292 | size_t used = rec->bytesUsed(); |
| 293 | SkASSERT(used <= fTotalBytesUsed); |
| 294 | |
| 295 | this->detach(rec); |
| 296 | #ifdef USE_HASH |
| 297 | fHash->remove(rec->getKey()); |
| 298 | #endif |
| 299 | |
| 300 | SkDELETE(rec); |
| 301 | |
| 302 | fTotalBytesUsed -= used; |
| 303 | fCount -= 1; |
| 304 | } |
| 305 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 306 | void SkResourceCache::purgeAsNeeded() { |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 307 | size_t byteLimit; |
| 308 | int countLimit; |
skia.committer@gmail.com | 7f1af50 | 2013-07-24 07:01:12 +0000 | [diff] [blame] | 309 | |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 310 | if (fDiscardableFactory) { |
| 311 | countLimit = SK_DISCARDABLEMEMORY_SCALEDIMAGECACHE_COUNT_LIMIT; |
| 312 | byteLimit = SK_MaxU32; // no limit based on bytes |
| 313 | } else { |
| 314 | countLimit = SK_MaxS32; // no limit based on count |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 315 | byteLimit = fTotalByteLimit; |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 316 | } |
| 317 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 318 | Rec* rec = fTail; |
| 319 | while (rec) { |
danakj | 790ffe3 | 2014-09-11 10:49:52 -0700 | [diff] [blame^] | 320 | if (fTotalBytesUsed < byteLimit && fCount < countLimit) { |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 321 | break; |
| 322 | } |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 323 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 324 | Rec* prev = rec->fPrev; |
| 325 | if (0 == rec->fLockCount) { |
danakj | 790ffe3 | 2014-09-11 10:49:52 -0700 | [diff] [blame^] | 326 | this->remove(rec); |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 327 | } |
| 328 | rec = prev; |
| 329 | } |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 330 | } |
| 331 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 332 | size_t SkResourceCache::setTotalByteLimit(size_t newLimit) { |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 333 | size_t prevLimit = fTotalByteLimit; |
| 334 | fTotalByteLimit = newLimit; |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 335 | if (newLimit < prevLimit) { |
| 336 | this->purgeAsNeeded(); |
| 337 | } |
| 338 | return prevLimit; |
| 339 | } |
| 340 | |
| 341 | /////////////////////////////////////////////////////////////////////////////// |
| 342 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 343 | void SkResourceCache::detach(Rec* rec) { |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 344 | Rec* prev = rec->fPrev; |
| 345 | Rec* next = rec->fNext; |
skia.committer@gmail.com | 7f1af50 | 2013-07-24 07:01:12 +0000 | [diff] [blame] | 346 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 347 | if (!prev) { |
| 348 | SkASSERT(fHead == rec); |
| 349 | fHead = next; |
| 350 | } else { |
| 351 | prev->fNext = next; |
| 352 | } |
skia.committer@gmail.com | 7f1af50 | 2013-07-24 07:01:12 +0000 | [diff] [blame] | 353 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 354 | if (!next) { |
| 355 | fTail = prev; |
| 356 | } else { |
| 357 | next->fPrev = prev; |
| 358 | } |
skia.committer@gmail.com | 7f1af50 | 2013-07-24 07:01:12 +0000 | [diff] [blame] | 359 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 360 | rec->fNext = rec->fPrev = NULL; |
| 361 | } |
| 362 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 363 | void SkResourceCache::moveToHead(Rec* rec) { |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 364 | if (fHead == rec) { |
| 365 | return; |
| 366 | } |
| 367 | |
| 368 | SkASSERT(fHead); |
| 369 | SkASSERT(fTail); |
| 370 | |
| 371 | this->validate(); |
| 372 | |
| 373 | this->detach(rec); |
| 374 | |
| 375 | fHead->fPrev = rec; |
| 376 | rec->fNext = fHead; |
| 377 | fHead = rec; |
skia.committer@gmail.com | 7f1af50 | 2013-07-24 07:01:12 +0000 | [diff] [blame] | 378 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 379 | this->validate(); |
| 380 | } |
| 381 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 382 | void SkResourceCache::addToHead(Rec* rec) { |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 383 | this->validate(); |
| 384 | |
| 385 | rec->fPrev = NULL; |
| 386 | rec->fNext = fHead; |
| 387 | if (fHead) { |
| 388 | fHead->fPrev = rec; |
| 389 | } |
| 390 | fHead = rec; |
| 391 | if (!fTail) { |
| 392 | fTail = rec; |
| 393 | } |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 394 | fTotalBytesUsed += rec->bytesUsed(); |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 395 | fCount += 1; |
| 396 | |
| 397 | this->validate(); |
| 398 | } |
| 399 | |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 400 | /////////////////////////////////////////////////////////////////////////////// |
| 401 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 402 | #ifdef SK_DEBUG |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 403 | void SkResourceCache::validate() const { |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 404 | if (NULL == fHead) { |
| 405 | SkASSERT(NULL == fTail); |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 406 | SkASSERT(0 == fTotalBytesUsed); |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 407 | return; |
| 408 | } |
| 409 | |
| 410 | if (fHead == fTail) { |
| 411 | SkASSERT(NULL == fHead->fPrev); |
| 412 | SkASSERT(NULL == fHead->fNext); |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 413 | SkASSERT(fHead->bytesUsed() == fTotalBytesUsed); |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 414 | return; |
| 415 | } |
| 416 | |
| 417 | SkASSERT(NULL == fHead->fPrev); |
bsalomon | 49f085d | 2014-09-05 13:34:00 -0700 | [diff] [blame] | 418 | SkASSERT(fHead->fNext); |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 419 | SkASSERT(NULL == fTail->fNext); |
bsalomon | 49f085d | 2014-09-05 13:34:00 -0700 | [diff] [blame] | 420 | SkASSERT(fTail->fPrev); |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 421 | |
| 422 | size_t used = 0; |
| 423 | int count = 0; |
| 424 | const Rec* rec = fHead; |
| 425 | while (rec) { |
| 426 | count += 1; |
| 427 | used += rec->bytesUsed(); |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 428 | SkASSERT(used <= fTotalBytesUsed); |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 429 | rec = rec->fNext; |
| 430 | } |
| 431 | SkASSERT(fCount == count); |
| 432 | |
| 433 | rec = fTail; |
| 434 | while (rec) { |
| 435 | SkASSERT(count > 0); |
| 436 | count -= 1; |
| 437 | SkASSERT(used >= rec->bytesUsed()); |
| 438 | used -= rec->bytesUsed(); |
| 439 | rec = rec->fPrev; |
| 440 | } |
skia.committer@gmail.com | 7f1af50 | 2013-07-24 07:01:12 +0000 | [diff] [blame] | 441 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 442 | SkASSERT(0 == count); |
| 443 | SkASSERT(0 == used); |
| 444 | } |
| 445 | #endif |
| 446 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 447 | void SkResourceCache::dump() const { |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 448 | this->validate(); |
| 449 | |
| 450 | const Rec* rec = fHead; |
| 451 | int locked = 0; |
| 452 | while (rec) { |
| 453 | locked += rec->fLockCount > 0; |
| 454 | rec = rec->fNext; |
| 455 | } |
| 456 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 457 | SkDebugf("SkResourceCache: count=%d bytes=%d locked=%d %s\n", |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 458 | fCount, fTotalBytesUsed, locked, |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 459 | fDiscardableFactory ? "discardable" : "malloc"); |
| 460 | } |
| 461 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 462 | size_t SkResourceCache::setSingleAllocationByteLimit(size_t newLimit) { |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 463 | size_t oldLimit = fSingleAllocationByteLimit; |
| 464 | fSingleAllocationByteLimit = newLimit; |
| 465 | return oldLimit; |
| 466 | } |
| 467 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 468 | size_t SkResourceCache::getSingleAllocationByteLimit() const { |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 469 | return fSingleAllocationByteLimit; |
| 470 | } |
| 471 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 472 | /////////////////////////////////////////////////////////////////////////////// |
| 473 | |
| 474 | #include "SkThread.h" |
| 475 | |
reed@google.com | be19dbe | 2013-07-24 15:06:34 +0000 | [diff] [blame] | 476 | SK_DECLARE_STATIC_MUTEX(gMutex); |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 477 | static SkResourceCache* gResourceCache = NULL; |
| 478 | static void cleanup_gResourceCache() { |
mtklein | 77ec7a6 | 2014-06-10 11:13:47 -0700 | [diff] [blame] | 479 | // We'll clean this up in our own tests, but disable for clients. |
| 480 | // Chrome seems to have funky multi-process things going on in unit tests that |
| 481 | // makes this unsafe to delete when the main process atexit()s. |
| 482 | // SkLazyPtr does the same sort of thing. |
| 483 | #if SK_DEVELOPER |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 484 | SkDELETE(gResourceCache); |
mtklein | 77ec7a6 | 2014-06-10 11:13:47 -0700 | [diff] [blame] | 485 | #endif |
| 486 | } |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 487 | |
commit-bot@chromium.org | 60c8d24 | 2014-05-27 16:28:43 +0000 | [diff] [blame] | 488 | /** Must hold gMutex when calling. */ |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 489 | static SkResourceCache* get_cache() { |
commit-bot@chromium.org | 60c8d24 | 2014-05-27 16:28:43 +0000 | [diff] [blame] | 490 | // gMutex is always held when this is called, so we don't need to be fancy in here. |
mtklein | b83f6c3 | 2014-06-09 14:18:02 -0700 | [diff] [blame] | 491 | gMutex.assertHeld(); |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 492 | if (NULL == gResourceCache) { |
commit-bot@chromium.org | 60c8d24 | 2014-05-27 16:28:43 +0000 | [diff] [blame] | 493 | #ifdef SK_USE_DISCARDABLE_SCALEDIMAGECACHE |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 494 | gResourceCache = SkNEW_ARGS(SkResourceCache, (SkDiscardableMemory::Create)); |
commit-bot@chromium.org | 60c8d24 | 2014-05-27 16:28:43 +0000 | [diff] [blame] | 495 | #else |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 496 | gResourceCache = SkNEW_ARGS(SkResourceCache, (SK_DEFAULT_IMAGE_CACHE_LIMIT)); |
commit-bot@chromium.org | 60c8d24 | 2014-05-27 16:28:43 +0000 | [diff] [blame] | 497 | #endif |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 498 | atexit(cleanup_gResourceCache); |
commit-bot@chromium.org | 60c8d24 | 2014-05-27 16:28:43 +0000 | [diff] [blame] | 499 | } |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 500 | return gResourceCache; |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 501 | } |
| 502 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 503 | void SkResourceCache::Unlock(SkResourceCache::ID id) { |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 504 | SkAutoMutexAcquire am(gMutex); |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 505 | get_cache()->unlock(id); |
| 506 | |
| 507 | // get_cache()->dump(); |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 508 | } |
| 509 | |
danakj | 790ffe3 | 2014-09-11 10:49:52 -0700 | [diff] [blame^] | 510 | void SkResourceCache::Remove(SkResourceCache::ID id) { |
| 511 | SkAutoMutexAcquire am(gMutex); |
| 512 | SkASSERT(id); |
| 513 | |
| 514 | #ifdef SK_DEBUG |
| 515 | { |
| 516 | bool found = false; |
| 517 | Rec* rec = get_cache()->fHead; |
| 518 | while (rec != NULL) { |
| 519 | if (rec == id) { |
| 520 | found = true; |
| 521 | break; |
| 522 | } |
| 523 | rec = rec->fNext; |
| 524 | } |
| 525 | SkASSERT(found); |
| 526 | } |
| 527 | #endif |
| 528 | const Rec* rec = id; |
| 529 | get_cache()->remove(const_cast<Rec*>(rec)); |
| 530 | } |
| 531 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 532 | size_t SkResourceCache::GetTotalBytesUsed() { |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 533 | SkAutoMutexAcquire am(gMutex); |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 534 | return get_cache()->getTotalBytesUsed(); |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 535 | } |
| 536 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 537 | size_t SkResourceCache::GetTotalByteLimit() { |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 538 | SkAutoMutexAcquire am(gMutex); |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 539 | return get_cache()->getTotalByteLimit(); |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 540 | } |
| 541 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 542 | size_t SkResourceCache::SetTotalByteLimit(size_t newLimit) { |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 543 | SkAutoMutexAcquire am(gMutex); |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 544 | return get_cache()->setTotalByteLimit(newLimit); |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 545 | } |
| 546 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 547 | SkBitmap::Allocator* SkResourceCache::GetAllocator() { |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 548 | SkAutoMutexAcquire am(gMutex); |
| 549 | return get_cache()->allocator(); |
| 550 | } |
| 551 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 552 | void SkResourceCache::Dump() { |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 553 | SkAutoMutexAcquire am(gMutex); |
| 554 | get_cache()->dump(); |
| 555 | } |
| 556 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 557 | size_t SkResourceCache::SetSingleAllocationByteLimit(size_t size) { |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 558 | SkAutoMutexAcquire am(gMutex); |
| 559 | return get_cache()->setSingleAllocationByteLimit(size); |
| 560 | } |
| 561 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 562 | size_t SkResourceCache::GetSingleAllocationByteLimit() { |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 563 | SkAutoMutexAcquire am(gMutex); |
| 564 | return get_cache()->getSingleAllocationByteLimit(); |
| 565 | } |
| 566 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 567 | const SkResourceCache::Rec* SkResourceCache::FindAndLock(const Key& key) { |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 568 | SkAutoMutexAcquire am(gMutex); |
| 569 | return get_cache()->findAndLock(key); |
| 570 | } |
| 571 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 572 | const SkResourceCache::Rec* SkResourceCache::AddAndLock(Rec* rec) { |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 573 | SkAutoMutexAcquire am(gMutex); |
| 574 | return get_cache()->addAndLock(rec); |
| 575 | } |
| 576 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 577 | void SkResourceCache::Add(Rec* rec) { |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 578 | SkAutoMutexAcquire am(gMutex); |
| 579 | get_cache()->add(rec); |
| 580 | } |
| 581 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 582 | /////////////////////////////////////////////////////////////////////////////// |
| 583 | |
| 584 | #include "SkGraphics.h" |
| 585 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 586 | size_t SkGraphics::GetResourceCacheTotalBytesUsed() { |
| 587 | return SkResourceCache::GetTotalBytesUsed(); |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 588 | } |
| 589 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 590 | size_t SkGraphics::GetResourceCacheTotalByteLimit() { |
| 591 | return SkResourceCache::GetTotalByteLimit(); |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 592 | } |
| 593 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 594 | size_t SkGraphics::SetResourceCacheTotalByteLimit(size_t newLimit) { |
| 595 | return SkResourceCache::SetTotalByteLimit(newLimit); |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 596 | } |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 597 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 598 | size_t SkGraphics::GetResourceCacheSingleAllocationByteLimit() { |
| 599 | return SkResourceCache::GetSingleAllocationByteLimit(); |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 600 | } |
| 601 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 602 | size_t SkGraphics::SetResourceCacheSingleAllocationByteLimit(size_t newLimit) { |
| 603 | return SkResourceCache::SetSingleAllocationByteLimit(newLimit); |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 604 | } |
| 605 | |