TEST(ImageResourceTest, DecodedDataRemainsWhileHasClients)
{
ResourcePtr<ImageResource> cachedImage = new ImageResource(ResourceRequest(), nullptr);
cachedImage->setLoading(true);
MockImageResourceClient client(cachedImage);
// Send the image response.
cachedImage->responseReceived(ResourceResponse(KURL(), "multipart/x-mixed-replace", 0, nullAtom, String()), nullptr);
Vector<unsigned char> jpeg = jpegImage();
cachedImage->responseReceived(ResourceResponse(KURL(), "image/jpeg", jpeg.size(), nullAtom, String()), nullptr);
cachedImage->appendData(reinterpret_cast<const char*>(jpeg.data()), jpeg.size());
cachedImage->finish();
ASSERT_FALSE(cachedImage->errorOccurred());
ASSERT_TRUE(cachedImage->hasImage());
ASSERT_FALSE(cachedImage->image()->isNull());
ASSERT_TRUE(client.notifyFinishedCalled());
// The prune comes when the ImageResource still has clients. The image should not be deleted.
cachedImage->prune();
ASSERT_TRUE(cachedImage->hasClients());
ASSERT_TRUE(cachedImage->hasImage());
ASSERT_FALSE(cachedImage->image()->isNull());
// The ImageResource no longer has clients. The image should be deleted by prune.
client.removeAsClient();
cachedImage->prune();
ASSERT_FALSE(cachedImage->hasClients());
ASSERT_FALSE(cachedImage->hasImage());
ASSERT_TRUE(cachedImage->image()->isNull());
}
TEST(RawResourceTest, RevalidationSucceededForResourceWithoutBody)
{
ResourcePtr<Resource> resource = new RawResource(ResourceRequest("data:text/html,"), Resource::Raw);
ResourceResponse response;
response.setHTTPStatusCode(200);
resource->responseReceived(response, nullptr);
resource->finish();
memoryCache()->add(resource.get());
// Simulate a successful revalidation.
resource->setRevalidatingRequest(ResourceRequest("data:text/html,"));
OwnPtr<DummyClient> client = adoptPtr(new DummyClient);
resource->addClient(client.get());
ResourceResponse revalidatingResponse;
revalidatingResponse.setHTTPStatusCode(304);
resource->responseReceived(revalidatingResponse, nullptr);
EXPECT_FALSE(resource->isCacheValidator());
EXPECT_EQ(200, resource->response().httpStatusCode());
EXPECT_EQ(nullptr, resource->resourceBuffer());
EXPECT_EQ(memoryCache()->resourceForURL(KURL(ParsedURLString, "data:text/html,")), resource.get());
memoryCache()->remove(resource.get());
resource->removeClient(client.get());
EXPECT_FALSE(resource->hasClients());
EXPECT_FALSE(client->called());
EXPECT_EQ(0u, client->data().size());
}
void MemoryCache::dumpLRULists(bool includeLive) const
{
printf("LRU-SP lists in eviction order (Kilobytes decoded, Kilobytes encoded, Access count, Referenced, isPurgeable, wasPurged):\n");
int size = m_allResources.size();
for (int i = size - 1; i >= 0; i--) {
printf("\n\nList %d: ", i);
MemoryCacheEntry* current = m_allResources[i].m_tail;
while (current) {
ResourcePtr<Resource> currentResource = current->m_resource;
if (includeLive || !currentResource->hasClients())
printf("(%.1fK, %.1fK, %uA, %dR, %d, %d); ", currentResource->decodedSize() / 1024.0f, (currentResource->encodedSize() + currentResource->overheadSize()) / 1024.0f, current->m_accessCount, currentResource->hasClients(), currentResource->isPurgeable(), currentResource->wasPurged());
current = current->m_previousInAllResourcesList;
}
}
}
TEST(RawResourceTest, RemoveClientDuringCallback)
{
ResourcePtr<Resource> raw = new RawResource(ResourceRequest("data:text/html,"), Resource::Raw);
raw->setLoading(false);
// Create a non-null response.
ResourceResponse response = raw->response();
response.setURL(KURL(ParsedURLString, "http://600.613/"));
raw->setResponse(response);
EXPECT_FALSE(raw->response().isNull());
OwnPtr<DummyClient> dummyClient = adoptPtr(new DummyClient());
OwnPtr<RemovingClient> removingClient = adoptPtr(new RemovingClient(dummyClient.get()));
raw->addClient(dummyClient.get());
raw->addClient(removingClient.get());
testing::runPendingTasks();
EXPECT_FALSE(raw->hasClients());
}
ResourcePtr<Resource> ResourceFetcher::requestResource(Resource::Type type, FetchRequest& request)
{
ASSERT(request.options().synchronousPolicy == RequestAsynchronously || type == Resource::Raw);
TRACE_EVENT0("blink", "ResourceFetcher::requestResource");
KURL url = request.resourceRequest().url();
WTF_LOG(ResourceLoading, "ResourceFetcher::requestResource '%s', charset '%s', priority=%d, type=%s", url.elidedString().latin1().data(), request.charset().latin1().data(), request.priority(), ResourceTypeName(type));
// If only the fragment identifiers differ, it is the same resource.
url = MemoryCache::removeFragmentIdentifierIfNeeded(url);
if (!url.isValid())
return 0;
if (!canRequest(type, url, request.options(), request.originRestriction()))
return 0;
if (LocalFrame* f = frame())
f->loaderClient()->dispatchWillRequestResource(&request);
// See if we can use an existing resource from the cache.
ResourcePtr<Resource> resource = memoryCache()->resourceForURL(url);
const RevalidationPolicy policy = determineRevalidationPolicy(type, request, resource.get());
switch (policy) {
case Reload:
memoryCache()->remove(resource.get());
// Fall through
case Load:
resource = createResourceForLoading(type, request, request.charset());
break;
case Revalidate:
resource = createResourceForRevalidation(request, resource.get());
break;
case Use:
memoryCache()->updateForAccess(resource.get());
break;
}
if (!resource)
return 0;
if (!resource->hasClients())
m_deadStatsRecorder.update(policy);
if (policy != Use)
resource->setIdentifier(createUniqueIdentifier());
ResourceLoadPriority priority = loadPriority(type, request);
if (priority != resource->resourceRequest().priority()) {
resource->mutableResourceRequest().setPriority(priority);
resource->didChangePriority(priority, 0);
}
if (resourceNeedsLoad(resource.get(), request, policy)) {
if (!shouldLoadNewResource(type)) {
if (memoryCache()->contains(resource.get()))
memoryCache()->remove(resource.get());
return 0;
}
resource->load(this, request.options());
// For asynchronous loads that immediately fail, it's sufficient to return a
// null Resource, as it indicates that something prevented the load from starting.
// If there's a network error, that failure will happen asynchronously. However, if
// a sync load receives a network error, it will have already happened by this point.
// In that case, the requester should have access to the relevant ResourceError, so
// we need to return a non-null Resource.
if (resource->errorOccurred()) {
if (memoryCache()->contains(resource.get()))
memoryCache()->remove(resource.get());
return 0;
}
}
requestLoadStarted(resource.get(), request, policy == Use ? ResourceLoadingFromCache : ResourceLoadingFromNetwork);
ASSERT(resource->url() == url.string());
m_documentResources.set(resource->url(), resource);
return resource;
}