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 #define LOG_TAG "OpenGLRenderer"
18
19 #include "ResourceCache.h"
20 #include "Caches.h"
21
22 namespace android {
23
24 using namespace uirenderer;
25 ANDROID_SINGLETON_STATIC_INSTANCE(ResourceCache);
26
27 namespace uirenderer {
28
29 ///////////////////////////////////////////////////////////////////////////////
30 // Resource cache
31 ///////////////////////////////////////////////////////////////////////////////
32
logCache()33 void ResourceCache::logCache() {
34 ALOGD("ResourceCache: cacheReport:");
35 for (size_t i = 0; i < mCache->size(); ++i) {
36 ResourceReference* ref = mCache->valueAt(i);
37 ALOGD(" ResourceCache: mCache(%zu): resource, ref = 0x%p, 0x%p",
38 i, mCache->keyAt(i), mCache->valueAt(i));
39 ALOGD(" ResourceCache: mCache(%zu): refCount, destroyed, type = %d, %d, %d",
40 i, ref->refCount, ref->destroyed, ref->resourceType);
41 }
42 }
43
ResourceCache()44 ResourceCache::ResourceCache() {
45 Mutex::Autolock _l(mLock);
46 mCache = new KeyedVector<const void*, ResourceReference*>();
47 }
48
~ResourceCache()49 ResourceCache::~ResourceCache() {
50 Mutex::Autolock _l(mLock);
51 delete mCache;
52 }
53
lock()54 void ResourceCache::lock() {
55 mLock.lock();
56 }
57
unlock()58 void ResourceCache::unlock() {
59 mLock.unlock();
60 }
61
incrementRefcount(void * resource,ResourceType resourceType)62 void ResourceCache::incrementRefcount(void* resource, ResourceType resourceType) {
63 Mutex::Autolock _l(mLock);
64 incrementRefcountLocked(resource, resourceType);
65 }
66
incrementRefcount(const Res_png_9patch * patchResource)67 void ResourceCache::incrementRefcount(const Res_png_9patch* patchResource) {
68 incrementRefcount((void*) patchResource, kNinePatch);
69 }
70
incrementRefcountLocked(void * resource,ResourceType resourceType)71 void ResourceCache::incrementRefcountLocked(void* resource, ResourceType resourceType) {
72 ssize_t index = mCache->indexOfKey(resource);
73 ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : nullptr;
74 if (ref == nullptr || mCache->size() == 0) {
75 ref = new ResourceReference(resourceType);
76 mCache->add(resource, ref);
77 }
78 ref->refCount++;
79 }
80
decrementRefcount(void * resource)81 void ResourceCache::decrementRefcount(void* resource) {
82 Mutex::Autolock _l(mLock);
83 decrementRefcountLocked(resource);
84 }
85
decrementRefcount(const Res_png_9patch * patchResource)86 void ResourceCache::decrementRefcount(const Res_png_9patch* patchResource) {
87 decrementRefcount((void*) patchResource);
88 }
89
decrementRefcountLocked(void * resource)90 void ResourceCache::decrementRefcountLocked(void* resource) {
91 ssize_t index = mCache->indexOfKey(resource);
92 ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : nullptr;
93 if (ref == nullptr) {
94 // Should not get here - shouldn't get a call to decrement if we're not yet tracking it
95 return;
96 }
97 ref->refCount--;
98 if (ref->refCount == 0) {
99 deleteResourceReferenceLocked(resource, ref);
100 }
101 }
102
decrementRefcountLocked(const Res_png_9patch * patchResource)103 void ResourceCache::decrementRefcountLocked(const Res_png_9patch* patchResource) {
104 decrementRefcountLocked((void*) patchResource);
105 }
106
destructor(Res_png_9patch * resource)107 void ResourceCache::destructor(Res_png_9patch* resource) {
108 Mutex::Autolock _l(mLock);
109 destructorLocked(resource);
110 }
111
destructorLocked(Res_png_9patch * resource)112 void ResourceCache::destructorLocked(Res_png_9patch* resource) {
113 ssize_t index = mCache->indexOfKey(resource);
114 ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : nullptr;
115 if (ref == nullptr) {
116 // If we're not tracking this resource, just delete it
117 if (Caches::hasInstance()) {
118 Caches::getInstance().patchCache.removeDeferred(resource);
119 } else {
120 // A Res_png_9patch is actually an array of byte that's larger
121 // than sizeof(Res_png_9patch). It must be freed as an array.
122 delete[] (int8_t*) resource;
123 }
124 return;
125 }
126 ref->destroyed = true;
127 if (ref->refCount == 0) {
128 deleteResourceReferenceLocked(resource, ref);
129 }
130 }
131
132 /**
133 * This method should only be called while the mLock mutex is held (that mutex is grabbed
134 * by the various destructor() and recycle() methods which call this method).
135 */
deleteResourceReferenceLocked(const void * resource,ResourceReference * ref)136 void ResourceCache::deleteResourceReferenceLocked(const void* resource, ResourceReference* ref) {
137 if (ref->destroyed) {
138 switch (ref->resourceType) {
139 case kNinePatch: {
140 if (Caches::hasInstance()) {
141 Caches::getInstance().patchCache.removeDeferred((Res_png_9patch*) resource);
142 } else {
143 // A Res_png_9patch is actually an array of byte that's larger
144 // than sizeof(Res_png_9patch). It must be freed as an array.
145 int8_t* patch = (int8_t*) resource;
146 delete[] patch;
147 }
148 }
149 break;
150 }
151 }
152 mCache->removeItem(resource);
153 delete ref;
154 }
155
156 }; // namespace uirenderer
157 }; // namespace android
158