// Verifies that CachedResources are evicted from the decode cache
// according to their DecodeCachePriority.
static void TestDecodeCacheOrder(const ResourcePtr<Resource>& cachedImageLowPriority, const ResourcePtr<Resource>& cachedImageHighPriority)
{
memoryCache()->setDelayBeforeLiveDecodedPrune(0);
memoryCache()->setMaxPruneDeferralDelay(0);
MockImageResourceClient clientLowPriority(cachedImageLowPriority);
MockImageResourceClient clientHighPriority(cachedImageHighPriority);
const char data[5] = "abcd";
cachedImageLowPriority->appendData(data, 1u);
cachedImageHighPriority->appendData(data, 4u);
const unsigned lowPrioritySize = cachedImageLowPriority->size();
const unsigned highPrioritySize = cachedImageHighPriority->size();
const unsigned lowPriorityMockDecodeSize = cachedImageLowPriority->decodedSize();
const unsigned highPriorityMockDecodeSize = cachedImageHighPriority->decodedSize();
const unsigned totalSize = lowPrioritySize + highPrioritySize;
// Verify that the sizes are different to ensure that we can test eviction order.
ASSERT_GT(lowPrioritySize, 0u);
ASSERT_NE(lowPrioritySize, highPrioritySize);
ASSERT_GT(lowPriorityMockDecodeSize, 0u);
ASSERT_NE(lowPriorityMockDecodeSize, highPriorityMockDecodeSize);
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), 0u);
// Add the items. The item added first would normally be evicted first.
memoryCache()->add(cachedImageHighPriority.get());
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), highPrioritySize);
memoryCache()->add(cachedImageLowPriority.get());
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), highPrioritySize + lowPrioritySize);
// Insert all items in the decoded items list with the same priority
memoryCache()->updateDecodedResource(cachedImageHighPriority.get(), UpdateForPropertyChange);
memoryCache()->updateDecodedResource(cachedImageLowPriority.get(), UpdateForPropertyChange);
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), totalSize);
// Now we will assign their priority and make sure they are moved to the correct buckets.
memoryCache()->updateDecodedResource(cachedImageLowPriority.get(), UpdateForPropertyChange, MemoryCacheLiveResourcePriorityLow);
memoryCache()->updateDecodedResource(cachedImageHighPriority.get(), UpdateForPropertyChange, MemoryCacheLiveResourcePriorityHigh);
// Should first prune the LowPriority item.
memoryCache()->setCapacities(memoryCache()->minDeadCapacity(), memoryCache()->liveSize() - 10, memoryCache()->liveSize() - 10);
memoryCache()->prune();
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), totalSize - lowPriorityMockDecodeSize);
// Should prune the HighPriority item.
memoryCache()->setCapacities(memoryCache()->minDeadCapacity(), memoryCache()->liveSize() - 10, memoryCache()->liveSize() - 10);
memoryCache()->prune();
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), totalSize - lowPriorityMockDecodeSize - highPriorityMockDecodeSize);
}
// Verified that when ordering a prune in a runLoop task, the prune
// is deferred to the end of the task.
TEST_F(MemoryCacheTest, LiveResourceEvictionAtEndOfTask)
{
memoryCache()->setDelayBeforeLiveDecodedPrune(0);
const unsigned totalCapacity = 1;
const unsigned minDeadCapacity = 0;
const unsigned maxDeadCapacity = 0;
memoryCache()->setCapacities(minDeadCapacity, maxDeadCapacity, totalCapacity);
const char data[6] = "abcde";
ResourcePtr<Resource> cachedDeadResource =
new Resource(ResourceRequest(""), Resource::Raw);
cachedDeadResource->appendData(data, 3);
ResourcePtr<Resource> cachedLiveResource =
new FakeDecodedResource(ResourceRequest(""), Resource::Raw);
MockImageResourceClient client;
cachedLiveResource->addClient(&client);
cachedLiveResource->appendData(data, 4);
class Task1 : public WebKit::WebThread::Task {
public:
Task1(const ResourcePtr<Resource>& live, const ResourcePtr<Resource>& dead)
: m_live(live)
, m_dead(dead)
{ }
virtual void run() OVERRIDE
{
// The resource size has to be nonzero for this test to be meaningful, but
// we do not rely on it having any particular value.
ASSERT_GT(m_live->size(), 0u);
ASSERT_GT(m_dead->size(), 0u);
ASSERT_EQ(0u, memoryCache()->deadSize());
ASSERT_EQ(0u, memoryCache()->liveSize());
memoryCache()->add(m_dead.get());
memoryCache()->add(m_live.get());
memoryCache()->insertInLiveDecodedResourcesList(m_live.get());
ASSERT_EQ(m_dead->size(), memoryCache()->deadSize());
ASSERT_EQ(m_live->size(), memoryCache()->liveSize());
ASSERT_GT(m_live->decodedSize(), 0u);
memoryCache()->prune(); // Dead resources are pruned immediately
ASSERT_EQ(m_dead->size(), memoryCache()->deadSize());
ASSERT_EQ(m_live->size(), memoryCache()->liveSize());
ASSERT_GT(m_live->decodedSize(), 0u);
}
private:
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, RevalidationSucceeded)
{
ResourcePtr<Resource> resource = new RawResource(ResourceRequest("data:text/html,"), Resource::Raw);
ResourceResponse response;
response.setHTTPStatusCode(200);
resource->responseReceived(response, nullptr);
const char data[5] = "abcd";
resource->appendData(data, 4);
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(4u, resource->resourceBuffer()->size());
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("abcd", String(client->data().data(), client->data().size()));
}
// Verifies that dead resources that exceed dead resource capacity are evicted
// from cache when pruning.
TEST_F(MemoryCacheTest, DeadResourceEviction)
{
const unsigned totalCapacity = 1000000;
const unsigned minDeadCapacity = 0;
const unsigned maxDeadCapacity = 0;
memoryCache()->setCapacities(minDeadCapacity, maxDeadCapacity, totalCapacity);
ResourcePtr<Resource> cachedResource =
new Resource(ResourceRequest(""), Resource::Raw);
const char data[5] = "abcd";
cachedResource->appendData(data, 3);
// The resource size has to be nonzero for this test to be meaningful, but
// we do not rely on it having any particular value.
ASSERT_GT(cachedResource->size(), 0u);
ASSERT_EQ(0u, memoryCache()->deadSize());
ASSERT_EQ(0u, memoryCache()->liveSize());
memoryCache()->add(cachedResource.get());
ASSERT_EQ(cachedResource->size(), memoryCache()->deadSize());
ASSERT_EQ(0u, memoryCache()->liveSize());
memoryCache()->prune();
ASSERT_EQ(0u, memoryCache()->deadSize());
ASSERT_EQ(0u, memoryCache()->liveSize());
}
// Verifies that cached resources are evicted immediately after release when
// the total dead resource size is more than double the dead resource capacity.
static void TestClientRemoval(const ResourcePtr<Resource>& resource1, const ResourcePtr<Resource>& resource2)
{
const char data[6] = "abcde";
MockImageResourceClient client1(resource1);
resource1->appendData(data, 4u);
MockImageResourceClient client2(resource2);
resource2->appendData(data, 4u);
const unsigned minDeadCapacity = 0;
const unsigned maxDeadCapacity = ((resource1->size() + resource2->size()) / 2) - 1;
const unsigned totalCapacity = maxDeadCapacity;
memoryCache()->setCapacities(minDeadCapacity, maxDeadCapacity, totalCapacity);
memoryCache()->add(resource1.get());
memoryCache()->add(resource2.get());
// Call prune. There is nothing to prune, but this will initialize
// the prune timestamp, allowing future prunes to be deferred.
memoryCache()->prune();
ASSERT_GT(resource1->decodedSize(), 0u);
ASSERT_GT(resource2->decodedSize(), 0u);
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), resource1->size() + resource2->size());
// Removing the client from resource1 should result in all resources
// remaining in cache since the prune is deferred.
client1.removeAsClient();
ASSERT_GT(resource1->decodedSize(), 0u);
ASSERT_GT(resource2->decodedSize(), 0u);
ASSERT_EQ(memoryCache()->deadSize(), resource1->size());
ASSERT_EQ(memoryCache()->liveSize(), resource2->size());
ASSERT_TRUE(memoryCache()->contains(resource1.get()));
ASSERT_TRUE(memoryCache()->contains(resource2.get()));
// Removing the client from resource2 should result in immediate
// eviction of resource2 because we are over the prune deferral limit.
client2.removeAsClient();
ASSERT_GT(resource1->decodedSize(), 0u);
ASSERT_GT(resource2->decodedSize(), 0u);
ASSERT_EQ(memoryCache()->deadSize(), resource1->size());
ASSERT_EQ(memoryCache()->liveSize(), 0u);
ASSERT_TRUE(memoryCache()->contains(resource1.get()));
ASSERT_FALSE(memoryCache()->contains(resource2.get()));
}
TEST(ImageResourceTest, MultipartImage)
{
ResourceFetcher* fetcher = ResourceFetcher::create(nullptr);
KURL testURL(ParsedURLString, "http://www.test.com/cancelTest.html");
URLTestHelpers::registerMockedURLLoad(testURL, "cancelTest.html", "text/html");
// Emulate starting a real load, but don't expect any "real" WebURLLoaderClient callbacks.
ResourcePtr<ImageResource> cachedImage = new ImageResource(ResourceRequest(testURL), nullptr);
cachedImage->setIdentifier(createUniqueIdentifier());
cachedImage->load(fetcher, ResourceLoaderOptions());
Platform::current()->unitTestSupport()->unregisterMockedURL(testURL);
MockImageResourceClient client(cachedImage);
EXPECT_EQ(Resource::Pending, cachedImage->status());
// Send the multipart response. No image or data buffer is created.
// Note that the response must be routed through ResourceLoader to
// ensure the load is flagged as multipart.
ResourceResponse multipartResponse(KURL(), "multipart/x-mixed-replace", 0, nullAtom, String());
cachedImage->loader()->didReceiveResponse(nullptr, WrappedResourceResponse(multipartResponse), nullptr);
ASSERT_FALSE(cachedImage->resourceBuffer());
ASSERT_FALSE(cachedImage->hasImage());
ASSERT_EQ(client.imageChangedCount(), 0);
ASSERT_FALSE(client.notifyFinishedCalled());
// Send the response for the first real part. No image or data buffer is created.
const char* svgData = "<svg xmlns='http://www.w3.org/2000/svg' width='1' height='1'><rect width='1' height='1' fill='green'/></svg>";
unsigned svgDataLength = strlen(svgData);
ResourceResponse payloadResponse(KURL(), "image/svg+xml", svgDataLength, nullAtom, String());
cachedImage->loader()->didReceiveResponse(nullptr, WrappedResourceResponse(payloadResponse), nullptr);
ASSERT_FALSE(cachedImage->resourceBuffer());
ASSERT_FALSE(cachedImage->hasImage());
ASSERT_EQ(client.imageChangedCount(), 0);
ASSERT_FALSE(client.notifyFinishedCalled());
// The first bytes arrive. The data buffer is created, but no image is created.
cachedImage->appendData(svgData, svgDataLength);
ASSERT_TRUE(cachedImage->resourceBuffer());
ASSERT_EQ(cachedImage->resourceBuffer()->size(), svgDataLength);
ASSERT_FALSE(cachedImage->hasImage());
ASSERT_EQ(client.imageChangedCount(), 0);
ASSERT_FALSE(client.notifyFinishedCalled());
// This part finishes. The image is created, callbacks are sent, and the data buffer is cleared.
cachedImage->finish();
ASSERT_FALSE(cachedImage->resourceBuffer());
ASSERT_FALSE(cachedImage->errorOccurred());
ASSERT_TRUE(cachedImage->hasImage());
ASSERT_FALSE(cachedImage->image()->isNull());
ASSERT_EQ(cachedImage->image()->width(), 1);
ASSERT_EQ(cachedImage->image()->height(), 1);
ASSERT_EQ(client.imageChangedCount(), 2);
ASSERT_TRUE(client.notifyFinishedCalled());
}
TEST(ImageResourceTest, UpdateBitmapImages)
{
ResourcePtr<ImageResource> cachedImage = new ImageResource(ResourceRequest(), nullptr);
cachedImage->setLoading(true);
MockImageResourceClient client(cachedImage);
// Send the image response.
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_EQ(client.imageChangedCount(), 2);
ASSERT_TRUE(client.notifyFinishedCalled());
ASSERT_TRUE(cachedImage->image()->isBitmapImage());
}
static void TestLiveResourceEvictionAtEndOfTask(Resource* cachedDeadResource, const ResourcePtr<Resource>& cachedLiveResource)
{
memoryCache()->setDelayBeforeLiveDecodedPrune(0);
const unsigned totalCapacity = 1;
const unsigned minDeadCapacity = 0;
const unsigned maxDeadCapacity = 0;
memoryCache()->setCapacities(minDeadCapacity, maxDeadCapacity, totalCapacity);
const char data[6] = "abcde";
cachedDeadResource->appendData(data, 3u);
MockImageResourceClient client(cachedLiveResource);
cachedLiveResource->appendData(data, 4u);
class Task1 : public WebTaskRunner::Task {
public:
Task1(const ResourcePtr<Resource>& live, Resource* dead)
: m_live(live)
, m_dead(dead)
{ }
void run() override
{
// The resource size has to be nonzero for this test to be meaningful, but
// we do not rely on it having any particular value.
ASSERT_GT(m_live->size(), 0u);
ASSERT_GT(m_dead->size(), 0u);
ASSERT_EQ(0u, memoryCache()->deadSize());
ASSERT_EQ(0u, memoryCache()->liveSize());
memoryCache()->add(m_dead);
memoryCache()->add(m_live.get());
memoryCache()->updateDecodedResource(m_live.get(), UpdateForPropertyChange);
ASSERT_EQ(m_dead->size(), memoryCache()->deadSize());
ASSERT_EQ(m_live->size(), memoryCache()->liveSize());
ASSERT_GT(m_live->decodedSize(), 0u);
memoryCache()->prune(); // Dead resources are pruned immediately
ASSERT_EQ(m_dead->size(), memoryCache()->deadSize());
ASSERT_EQ(m_live->size(), memoryCache()->liveSize());
ASSERT_GT(m_live->decodedSize(), 0u);
}
private:
ResourcePtr<Resource> m_live;
Resource* m_dead;
};
class Task2 : public WebTaskRunner::Task {
public:
Task2(unsigned liveSizeWithoutDecode)
: m_liveSizeWithoutDecode(liveSizeWithoutDecode) { }
void run() override
{
// Next task: now, the live resource was evicted.
ASSERT_EQ(0u, memoryCache()->deadSize());
ASSERT_EQ(m_liveSizeWithoutDecode, memoryCache()->liveSize());
}
private:
unsigned m_liveSizeWithoutDecode;
};
Platform::current()->currentThread()->taskRunner()->postTask(FROM_HERE, new Task1(cachedLiveResource, cachedDeadResource));
Platform::current()->currentThread()->taskRunner()->postTask(FROM_HERE, new Task2(cachedLiveResource->encodedSize() + cachedLiveResource->overheadSize()));
testing::runPendingTasks();
}
// Verifies that CachedResources are evicted from the decode cache
// according to their DecodeCachePriority.
TEST_F(MemoryCacheTest, DecodeCacheOrder)
{
memoryCache()->setDelayBeforeLiveDecodedPrune(0);
ResourcePtr<MockImageResource> cachedImageLowPriority =
new MockImageResource(ResourceRequest(""), Resource::Raw);
ResourcePtr<MockImageResource> cachedImageHighPriority =
new MockImageResource(ResourceRequest(""), Resource::Raw);
MockImageResourceClient clientLowPriority;
MockImageResourceClient clientHighPriority;
cachedImageLowPriority->addClient(&clientLowPriority);
cachedImageHighPriority->addClient(&clientHighPriority);
const char data[5] = "abcd";
cachedImageLowPriority->appendData(data, 1);
cachedImageHighPriority->appendData(data, 4);
const unsigned lowPrioritySize = cachedImageLowPriority->size();
const unsigned highPrioritySize = cachedImageHighPriority->size();
const unsigned lowPriorityMockDecodeSize = cachedImageLowPriority->decodedSize();
const unsigned highPriorityMockDecodeSize = cachedImageHighPriority->decodedSize();
const unsigned totalSize = lowPrioritySize + highPrioritySize;
// Verify that the sizes are different to ensure that we can test eviction order.
ASSERT_GT(lowPrioritySize, 0u);
ASSERT_NE(lowPrioritySize, highPrioritySize);
ASSERT_GT(lowPriorityMockDecodeSize, 0u);
ASSERT_NE(lowPriorityMockDecodeSize, highPriorityMockDecodeSize);
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), 0u);
// Add the items. The item added first would normally be evicted first.
memoryCache()->add(cachedImageHighPriority.get());
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), highPrioritySize);
memoryCache()->add(cachedImageLowPriority.get());
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), highPrioritySize + lowPrioritySize);
// Insert all items in the decoded items list with the same priority
memoryCache()->insertInLiveDecodedResourcesList(cachedImageHighPriority.get());
memoryCache()->insertInLiveDecodedResourcesList(cachedImageLowPriority.get());
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), totalSize);
// Now we will assign their priority and make sure they are moved to the correct buckets.
cachedImageLowPriority->setCacheLiveResourcePriority(Resource::CacheLiveResourcePriorityLow);
cachedImageHighPriority->setCacheLiveResourcePriority(Resource::CacheLiveResourcePriorityHigh);
// Should first prune the LowPriority item.
memoryCache()->setCapacities(memoryCache()->minDeadCapacity(), memoryCache()->liveSize() - 10, memoryCache()->liveSize() - 10);
memoryCache()->prune();
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), totalSize - lowPriorityMockDecodeSize);
// Should prune the HighPriority item.
memoryCache()->setCapacities(memoryCache()->minDeadCapacity(), memoryCache()->liveSize() - 10, memoryCache()->liveSize() - 10);
memoryCache()->prune();
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), totalSize - lowPriorityMockDecodeSize - highPriorityMockDecodeSize);
}
