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Add prefetch to all resource caches

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This commit is contained in:
Zach Pomerantz 2016-04-19 21:26:11 -07:00
parent e3131d2098
commit 74e1f817a5
2 changed files with 27 additions and 0 deletions
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22
libraries/networking/src/ResourceCache.cpp
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@ -169,6 +169,11 @@ void ResourceCache::clearATPAssets() {
}
void ResourceCache::refreshAll() {
// Remove refs to prefetching resources
_prefetchingResourcesLock.lock();
_prefetchingResources.clear();
_prefetchingResourcesLock.unlock();
// Clear all unused resources so we don't have to reload them
clearUnusedResource();
resetResourceCounters();
@ -217,6 +222,23 @@ QVariantList ResourceCache::getResourceList() {
return list;
}
void ResourceCache::prefetch(const QUrl& url) {
if (QThread::currentThread() != thread()) {
QMetaObject::invokeMethod(this, "prefetch", Q_ARG(QUrl, url));
} else {
auto resource = getResource(url);
// If it is not loaded, hold a ref until it is
if (!resource->isLoaded()) {
QMutexLocker lock(&_prefetchingResourcesLock);
_prefetchingResources.insert(url, resource);
connect(resource.data(), &Resource::finishedLoading, [this, url]{
QMutexLocker lock(&_prefetchingResourcesLock);
this->_prefetchingResources.remove(url);
});
}
}
}
void ResourceCache::setRequestLimit(int limit) {
_requestLimit = limit;

5
libraries/networking/src/ResourceCache.h
View file

@ -96,6 +96,8 @@ public:
Q_INVOKABLE QVariantList getResourceList();
Q_INVOKABLE void prefetch(const QUrl& url);
static void setRequestLimit(int limit);
static int getRequestLimit() { return _requestLimit; }
@ -175,6 +177,9 @@ private:
qint64 _unusedResourcesMaxSize = DEFAULT_UNUSED_MAX_SIZE;
QReadWriteLock _unusedResourcesLock { QReadWriteLock::Recursive };
QMap<int, QSharedPointer<Resource>> _unusedResources;
QMutex _prefetchingResourcesLock{ QMutex::Recursive };
QMap<QUrl, QSharedPointer<Resource>> _prefetchingResources;
};
/// Base class for resources.