ResourceCache.cpp revision 58ecc204fbcacef34806290492384677a330d4d4 
1/*
2 * Copyright (C) 2010 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 <SkPixelRef.h>
18#include "ResourceCache.h"
19#include "Caches.h"
20
21namespace android {
22namespace uirenderer {
23
24///////////////////////////////////////////////////////////////////////////////
25// Resource cache
26///////////////////////////////////////////////////////////////////////////////
27
28void ResourceCache::logCache() {
29    ALOGD("ResourceCache: cacheReport:");
30    for (size_t i = 0; i < mCache->size(); ++i) {
31        ResourceReference* ref = mCache->valueAt(i);
32        ALOGD("  ResourceCache: mCache(%d): resource, ref = 0x%p, 0x%p",
33                i, mCache->keyAt(i), mCache->valueAt(i));
34        ALOGD("  ResourceCache: mCache(%d): refCount, recycled, destroyed, type = %d, %d, %d, %d",
35                i, ref->refCount, ref->recycled, ref->destroyed, ref->resourceType);
36    }
37}
38
39ResourceCache::ResourceCache() {
40    Mutex::Autolock _l(mLock);
41    mCache = new KeyedVector<void*, ResourceReference*>();
42}
43
44ResourceCache::~ResourceCache() {
45    Mutex::Autolock _l(mLock);
46    delete mCache;
47}
48
49void ResourceCache::lock() {
50    mLock.lock();
51}
52
53void ResourceCache::unlock() {
54    mLock.unlock();
55}
56
57void ResourceCache::incrementRefcount(void* resource, ResourceType resourceType) {
58    Mutex::Autolock _l(mLock);
59    incrementRefcountLocked(resource, resourceType);
60}
61
62void ResourceCache::incrementRefcount(SkBitmap* bitmapResource) {
63    SkSafeRef(bitmapResource->pixelRef());
64    SkSafeRef(bitmapResource->getColorTable());
65    incrementRefcount((void*) bitmapResource, kBitmap);
66}
67
68void ResourceCache::incrementRefcount(SkPath* pathResource) {
69    incrementRefcount((void*) pathResource, kPath);
70}
71
72void ResourceCache::incrementRefcount(SkiaShader* shaderResource) {
73    SkSafeRef(shaderResource->getSkShader());
74    incrementRefcount((void*) shaderResource, kShader);
75}
76
77void ResourceCache::incrementRefcount(SkiaColorFilter* filterResource) {
78    SkSafeRef(filterResource->getSkColorFilter());
79    incrementRefcount((void*) filterResource, kColorFilter);
80}
81
82void ResourceCache::incrementRefcountLocked(void* resource, ResourceType resourceType) {
83    ssize_t index = mCache->indexOfKey(resource);
84    ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
85    if (ref == NULL || mCache->size() == 0) {
86        ref = new ResourceReference(resourceType);
87        mCache->add(resource, ref);
88    }
89    ref->refCount++;
90}
91
92void ResourceCache::incrementRefcountLocked(SkBitmap* bitmapResource) {
93    SkSafeRef(bitmapResource->pixelRef());
94    SkSafeRef(bitmapResource->getColorTable());
95    incrementRefcountLocked((void*) bitmapResource, kBitmap);
96}
97
98void ResourceCache::incrementRefcountLocked(SkPath* pathResource) {
99    incrementRefcountLocked((void*) pathResource, kPath);
100}
101
102void ResourceCache::incrementRefcountLocked(SkiaShader* shaderResource) {
103    SkSafeRef(shaderResource->getSkShader());
104    incrementRefcountLocked((void*) shaderResource, kShader);
105}
106
107void ResourceCache::incrementRefcountLocked(SkiaColorFilter* filterResource) {
108    SkSafeRef(filterResource->getSkColorFilter());
109    incrementRefcountLocked((void*) filterResource, kColorFilter);
110}
111
112void ResourceCache::decrementRefcount(void* resource) {
113    Mutex::Autolock _l(mLock);
114    decrementRefcountLocked(resource);
115}
116
117void ResourceCache::decrementRefcount(SkBitmap* bitmapResource) {
118    SkSafeUnref(bitmapResource->pixelRef());
119    SkSafeUnref(bitmapResource->getColorTable());
120    decrementRefcount((void*) bitmapResource);
121}
122
123void ResourceCache::decrementRefcount(SkPath* pathResource) {
124    decrementRefcount((void*) pathResource);
125}
126
127void ResourceCache::decrementRefcount(SkiaShader* shaderResource) {
128    SkSafeUnref(shaderResource->getSkShader());
129    decrementRefcount((void*) shaderResource);
130}
131
132void ResourceCache::decrementRefcount(SkiaColorFilter* filterResource) {
133    SkSafeUnref(filterResource->getSkColorFilter());
134    decrementRefcount((void*) filterResource);
135}
136
137void ResourceCache::decrementRefcountLocked(void* resource) {
138    ssize_t index = mCache->indexOfKey(resource);
139    ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
140    if (ref == NULL) {
141        // Should not get here - shouldn't get a call to decrement if we're not yet tracking it
142        return;
143    }
144    ref->refCount--;
145    if (ref->refCount == 0) {
146        deleteResourceReference(resource, ref);
147    }
148}
149
150void ResourceCache::decrementRefcountLocked(SkBitmap* bitmapResource) {
151    SkSafeUnref(bitmapResource->pixelRef());
152    SkSafeUnref(bitmapResource->getColorTable());
153    decrementRefcountLocked((void*) bitmapResource);
154}
155
156void ResourceCache::decrementRefcountLocked(SkPath* pathResource) {
157    decrementRefcountLocked((void*) pathResource);
158}
159
160void ResourceCache::decrementRefcountLocked(SkiaShader* shaderResource) {
161    SkSafeUnref(shaderResource->getSkShader());
162    decrementRefcountLocked((void*) shaderResource);
163}
164
165void ResourceCache::decrementRefcountLocked(SkiaColorFilter* filterResource) {
166    SkSafeUnref(filterResource->getSkColorFilter());
167    decrementRefcountLocked((void*) filterResource);
168}
169
170void ResourceCache::destructor(SkPath* resource) {
171    Mutex::Autolock _l(mLock);
172    destructorLocked(resource);
173}
174
175void ResourceCache::destructorLocked(SkPath* resource) {
176    ssize_t index = mCache->indexOfKey(resource);
177    ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
178    if (ref == NULL) {
179        // If we're not tracking this resource, just delete it
180        if (Caches::hasInstance()) {
181            Caches::getInstance().pathCache.removeDeferred(resource);
182        }
183        delete resource;
184        return;
185    }
186    ref->destroyed = true;
187    if (ref->refCount == 0) {
188        deleteResourceReference(resource, ref);
189    }
190}
191
192void ResourceCache::destructor(SkBitmap* resource) {
193    Mutex::Autolock _l(mLock);
194    destructorLocked(resource);
195}
196
197void ResourceCache::destructorLocked(SkBitmap* resource) {
198    ssize_t index = mCache->indexOfKey(resource);
199    ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
200    if (ref == NULL) {
201        // If we're not tracking this resource, just delete it
202        if (Caches::hasInstance()) {
203            Caches::getInstance().textureCache.removeDeferred(resource);
204        }
205        delete resource;
206        return;
207    }
208    ref->destroyed = true;
209    if (ref->refCount == 0) {
210        deleteResourceReference(resource, ref);
211    }
212}
213
214void ResourceCache::destructor(SkiaShader* resource) {
215    Mutex::Autolock _l(mLock);
216    destructorLocked(resource);
217}
218
219void ResourceCache::destructorLocked(SkiaShader* resource) {
220    ssize_t index = mCache->indexOfKey(resource);
221    ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
222    if (ref == NULL) {
223        // If we're not tracking this resource, just delete it
224        delete resource;
225        return;
226    }
227    ref->destroyed = true;
228    if (ref->refCount == 0) {
229        deleteResourceReference(resource, ref);
230    }
231}
232
233void ResourceCache::destructor(SkiaColorFilter* resource) {
234    Mutex::Autolock _l(mLock);
235    destructorLocked(resource);
236}
237
238void ResourceCache::destructorLocked(SkiaColorFilter* resource) {
239    ssize_t index = mCache->indexOfKey(resource);
240    ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
241    if (ref == NULL) {
242        // If we're not tracking this resource, just delete it
243        delete resource;
244        return;
245    }
246    ref->destroyed = true;
247    if (ref->refCount == 0) {
248        deleteResourceReference(resource, ref);
249    }
250}
251
252void ResourceCache::recycle(SkBitmap* resource) {
253    Mutex::Autolock _l(mLock);
254    recycleLocked(resource);
255}
256
257void ResourceCache::recycleLocked(SkBitmap* resource) {
258    ssize_t index = mCache->indexOfKey(resource);
259    if (index < 0) {
260        // not tracking this resource; just recycle the pixel data
261        resource->setPixels(NULL, NULL);
262        return;
263    }
264    ResourceReference* ref = mCache->valueAt(index);
265    if (ref == NULL) {
266        // Should not get here - shouldn't get a call to recycle if we're not yet tracking it
267        return;
268    }
269    ref->recycled = true;
270    if (ref->refCount == 0) {
271        deleteResourceReference(resource, ref);
272    }
273}
274
275/**
276 * This method should only be called while the mLock mutex is held (that mutex is grabbed
277 * by the various destructor() and recycle() methods which call this method).
278 */
279void ResourceCache::deleteResourceReference(void* resource, ResourceReference* ref) {
280    if (ref->recycled && ref->resourceType == kBitmap) {
281        ((SkBitmap*) resource)->setPixels(NULL, NULL);
282    }
283    if (ref->destroyed) {
284        switch (ref->resourceType) {
285            case kBitmap: {
286                SkBitmap* bitmap = (SkBitmap*) resource;
287                if (Caches::hasInstance()) {
288                    Caches::getInstance().textureCache.removeDeferred(bitmap);
289                }
290                delete bitmap;
291            }
292            break;
293            case kPath: {
294                SkPath* path = (SkPath*) resource;
295                if (Caches::hasInstance()) {
296                    Caches::getInstance().pathCache.removeDeferred(path);
297                }
298                delete path;
299            }
300            break;
301            case kShader: {
302                SkiaShader* shader = (SkiaShader*) resource;
303                delete shader;
304            }
305            break;
306            case kColorFilter: {
307                SkiaColorFilter* filter = (SkiaColorFilter*) resource;
308                delete filter;
309            }
310            break;
311        }
312    }
313    mCache->removeItem(resource);
314    delete ref;
315}
316
317}; // namespace uirenderer
318}; // namespace android
319