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