void Resource::addClient(ResourceClient* client)
{
ASSERT(!isPurgeable());
if (m_preloadResult == PreloadNotReferenced) {
if (isLoaded())
m_preloadResult = PreloadReferencedWhileComplete;
else if (m_requestedFromNetworkingLayer)
m_preloadResult = PreloadReferencedWhileLoading;
else
m_preloadResult = PreloadReferenced;
}
if (!hasClients())
memoryCache()->makeLive(this);
if (!m_revalidatingRequest.isNull()) {
m_clients.add(client);
return;
}
// If we have existing data to send to the new client and the resource type supprts it, send it asynchronously.
if (!m_response.isNull() && !shouldSendCachedDataSynchronouslyForType(type()) && !m_needsSynchronousCacheHit) {
m_clientsAwaitingCallback.add(client);
ResourceCallback::callbackHandler()->schedule(this);
return;
}
m_clients.add(client);
didAddClient(client);
return;
}
void Resource::onMemoryDump(WebMemoryDumpLevelOfDetail levelOfDetail, WebProcessMemoryDump* memoryDump) const
{
static const size_t kMaxURLReportLength = 128;
static const int kMaxResourceClientToShowInMemoryInfra = 10;
const String dumpName = getMemoryDumpName();
WebMemoryAllocatorDump* dump = memoryDump->createMemoryAllocatorDump(dumpName);
dump->addScalar("encoded_size", "bytes", m_encodedSize);
if (canDelete()) {
dump->addScalar("dead_size", "bytes", m_encodedSize);
} else {
dump->addScalar("live_size", "bytes", m_encodedSize);
}
if (m_data) {
dump->addScalar("purgeable_size", "bytes", isPurgeable() && !wasPurged() ? encodedSize() + overheadSize() : 0);
m_data->onMemoryDump(dumpName, memoryDump);
}
if (levelOfDetail == WebMemoryDumpLevelOfDetail::Detailed) {
String urlToReport = url().string();
if (urlToReport.length() > kMaxURLReportLength) {
urlToReport.truncate(kMaxURLReportLength);
urlToReport = urlToReport + "...";
}
dump->addString("url", "", urlToReport);
dump->addString("reason_not_deletable", "", reasonNotDeletable());
Vector<String> clientNames;
ResourceClientWalker<ResourceClient> walker(m_clients);
while (ResourceClient* client = walker.next())
clientNames.append(client->debugName());
ResourceClientWalker<ResourceClient> walker2(m_clientsAwaitingCallback);
while (ResourceClient* client = walker2.next())
clientNames.append("(awaiting) " + client->debugName());
ResourceClientWalker<ResourceClient> walker3(m_finishedClients);
while (ResourceClient* client = walker3.next())
clientNames.append("(finished) " + client->debugName());
std::sort(clientNames.begin(), clientNames.end(), codePointCompareLessThan);
StringBuilder builder;
for (size_t i = 0; i < clientNames.size() && i < kMaxResourceClientToShowInMemoryInfra; ++i) {
if (i > 0)
builder.append(" / ");
builder.append(clientNames[i]);
}
if (clientNames.size() > kMaxResourceClientToShowInMemoryInfra) {
builder.append(" / and ");
builder.appendNumber(clientNames.size() - kMaxResourceClientToShowInMemoryInfra);
builder.append(" more");
}
dump->addString("ResourceClient", "", builder.toString());
}
const String overheadName = dumpName + "/metadata";
WebMemoryAllocatorDump* overheadDump = memoryDump->createMemoryAllocatorDump(overheadName);
overheadDump->addScalar("size", "bytes", overheadSize());
memoryDump->addSuballocation(overheadDump->guid(), String(WTF::Partitions::kAllocatedObjectPoolName));
}
void Resource::onMemoryDump(WebMemoryDumpLevelOfDetail levelOfDetail, WebProcessMemoryDump* memoryDump) const
{
static const size_t kMaxURLReportLength = 128;
const String dumpName = getMemoryDumpName();
WebMemoryAllocatorDump* dump = memoryDump->createMemoryAllocatorDump(dumpName);
dump->addScalar("encoded_size", "bytes", m_encodedSize);
if (canDelete()) {
dump->addScalar("dead_size", "bytes", m_encodedSize);
} else {
dump->addScalar("live_size", "bytes", m_encodedSize);
}
if (m_data) {
dump->addScalar("purgeable_size", "bytes", isPurgeable() && !wasPurged() ? encodedSize() + overheadSize() : 0);
m_data->onMemoryDump(dumpName, memoryDump);
}
if (levelOfDetail == WebMemoryDumpLevelOfDetail::Detailed) {
String urlToReport = url().string();
if (urlToReport.length() > kMaxURLReportLength) {
urlToReport.truncate(kMaxURLReportLength);
urlToReport = urlToReport + "...";
}
dump->addString("url", "", urlToReport);
}
const String overheadName = dumpName + "/metadata";
WebMemoryAllocatorDump* overheadDump = memoryDump->createMemoryAllocatorDump(overheadName);
overheadDump->addScalar("size", "bytes", overheadSize());
memoryDump->addSuballocation(overheadDump->guid(), String(WTF::Partitions::kAllocatedObjectPoolName));
}
bool CachedResource::addClientToSet(CachedResourceClient* client)
{
ASSERT(!isPurgeable());
if (m_preloadResult == PreloadNotReferenced) {
if (isLoaded())
m_preloadResult = PreloadReferencedWhileComplete;
else if (m_requestedFromNetworkingLayer)
m_preloadResult = PreloadReferencedWhileLoading;
else
m_preloadResult = PreloadReferenced;
}
if (!hasClients() && inCache())
memoryCache()->addToLiveResourcesSize(this);
if ((m_type == RawResource || m_type == MainResource) && !m_response.isNull() && !m_proxyResource) {
// Certain resources (especially XHRs and main resources) do crazy things if an asynchronous load returns
// synchronously (e.g., scripts may not have set all the state they need to handle the load).
// Therefore, rather than immediately sending callbacks on a cache hit like other CachedResources,
// we schedule the callbacks and ensure we never finish synchronously.
ASSERT(!m_clientsAwaitingCallback.contains(client));
m_clientsAwaitingCallback.add(client, CachedResourceCallback::schedule(this, client));
return false;
}
m_clients.add(client);
return true;
}
LayoutSize ImageResource::imageSizeForLayoutObject(const LayoutObject* layoutObject, float multiplier, SizeType sizeType)
{
ASSERT(!isPurgeable());
if (!m_image)
return LayoutSize();
LayoutSize imageSize;
if (m_image->isBitmapImage() && (layoutObject && layoutObject->shouldRespectImageOrientation() == RespectImageOrientation))
imageSize = LayoutSize(toBitmapImage(m_image.get())->sizeRespectingOrientation());
else if (m_image->isSVGImage() && sizeType == NormalSize)
imageSize = LayoutSize(svgImageSizeForLayoutObject(layoutObject));
else
imageSize = LayoutSize(m_image->size());
if (multiplier == 1.0f)
return imageSize;
// Don't let images that have a width/height >= 1 shrink below 1 when zoomed.
float widthScale = m_image->hasRelativeWidth() ? 1.0f : multiplier;
float heightScale = m_image->hasRelativeHeight() ? 1.0f : multiplier;
LayoutSize minimumSize(imageSize.width() > 0 ? 1 : 0, imageSize.height() > 0 ? 1 : 0);
imageSize.scale(widthScale, heightScale);
imageSize.clampToMinimumSize(minimumSize);
ASSERT(multiplier != 1.0f || (imageSize.width().fraction() == 0.0f && imageSize.height().fraction() == 0.0f));
return imageSize;
}
const String& CachedScript::script()
{
ASSERT(!isPurgeable());
if (!m_script && m_data) {
m_script = m_decoder->decode(m_data->data(), encodedSize());
m_script.append(m_decoder->flush());
#if ENABLE(MEMORY_OUT_HANDLING)
// If we fail to decode the script (because of lack of memory)
// and return an empty string the Lexer will barf. It
// assumes that the data ptr is not going to be null.
if (encodedSize() > 0 && m_script.length() == 0)
m_script = " ";
#endif
setDecodedSize(m_script.sizeInBytes());
}
#if !ENABLE(MEMORY_OUT_HANDLING)
// If memory out handling is enabled, don't delete the decoded data.
// JS parser assumes that if a script has been decoded once we'll always
// be able to decode it.
m_decodedDataDeletionTimer.startOneShot(0);
#endif
return m_script;
}
IntRect CachedImage::imageRect(float multiplier) const
{
ASSERT(!isPurgeable());
if (!m_image)
return IntRect();
if (multiplier == 1.0f || (!m_image->hasRelativeWidth() && !m_image->hasRelativeHeight()))
return m_image->rect();
float widthMultiplier = (m_image->hasRelativeWidth() ? 1.0f : multiplier);
float heightMultiplier = (m_image->hasRelativeHeight() ? 1.0f : multiplier);
// Don't let images that have a width/height >= 1 shrink below 1 when zoomed.
bool hasWidth = m_image->rect().width() > 0;
bool hasHeight = m_image->rect().height() > 0;
int width = static_cast<int>(m_image->rect().width() * widthMultiplier);
int height = static_cast<int>(m_image->rect().height() * heightMultiplier);
if (hasWidth)
width = max(1, width);
if (hasHeight)
height = max(1, height);
int x = static_cast<int>(m_image->rect().x() * widthMultiplier);
int y = static_cast<int>(m_image->rect().y() * heightMultiplier);
return IntRect(x, y, width, height);
}
LayoutSize CachedImage::imageSizeForRenderer(const RenderObject* renderer, float multiplier, SizeType sizeType)
{
ASSERT(!isPurgeable());
if (!m_image)
return LayoutSize();
LayoutSize imageSize(m_image->size());
#if ENABLE(CSS_IMAGE_ORIENTATION)
if (renderer && m_image->isBitmapImage()) {
ImageOrientationDescription orientationDescription(renderer->shouldRespectImageOrientation(), renderer->style().imageOrientation());
if (orientationDescription.respectImageOrientation() == RespectImageOrientation)
imageSize = LayoutSize(toBitmapImage(m_image.get())->sizeRespectingOrientation(orientationDescription));
}
#else
if (m_image->isBitmapImage() && (renderer && renderer->shouldRespectImageOrientation() == RespectImageOrientation))
#if !PLATFORM(IOS)
imageSize = LayoutSize(toBitmapImage(m_image.get())->sizeRespectingOrientation());
#else
{
// On iOS, the image may have been subsampled to accommodate our size restrictions. However
// we should tell the renderer what the original size was.
imageSize = LayoutSize(toBitmapImage(m_image.get())->originalSizeRespectingOrientation());
} else if (m_image->isBitmapImage())
const String& CachedScript::script()
{
ASSERT(!isPurgeable());
if (!m_script && m_data) {
m_script = m_decoder->decodeAndFlush(m_data->data(), encodedSize());
setDecodedSize(m_script.sizeInBytes());
}
m_decodedDataDeletionTimer.restart();
return m_script;
}
Image* CachedImage::image() const
{
ASSERT(!isPurgeable());
if (errorOccurred() && m_shouldPaintBrokenImage)
return brokenImage();
if (m_image)
return m_image.get();
return Image::nullImage();
}
const String& CachedScript::script()
{
ASSERT(!isPurgeable());
if (!m_script && m_data) {
m_script = m_decoder->decode(m_data->data(), encodedSize());
m_script += m_decoder->flush();
setDecodedSize(m_script.length() * sizeof(UChar));
}
m_decodedDataDeletionTimer.startOneShot(0);
return m_script;
}
Image* CachedImage::image() const
{
ASSERT(!isPurgeable());
if (m_errorOccurred)
return brokenImage();
if (m_image)
return m_image.get();
return nullImage();
}
const String& CachedScript::script()
{
ASSERT(!isPurgeable());
if (!m_script && m_data) {
m_script = m_decoder->decode(m_data->data(), encodedSize());
m_script.append(m_decoder->flush());
setDecodedSize(m_script.sizeInBytes());
}
m_decodedDataDeletionTimer.startOneShot(0);
return m_script;
}
const String CachedCSSStyleSheet::sheetText(bool enforceMIMEType, bool* hasValidMIMEType) const
{
ASSERT(!isPurgeable());
if (!m_data || m_data->isEmpty() || !canUseSheet(enforceMIMEType, hasValidMIMEType))
return String();
if (!m_decodedSheetText.isNull())
return m_decodedSheetText;
// Don't cache the decoded text, regenerating is cheap and it can use quite a bit of memory
String sheetText = m_decoder->decode(m_data->data(), m_data->size());
sheetText += m_decoder->flush();
return sheetText;
}
Image* CachedImage::imageForRenderer(const RenderObject* renderer)
{
ASSERT(!isPurgeable());
if (errorOccurred() && m_shouldPaintBrokenImage) {
// Returning the 1x broken image is non-ideal, but we cannot reliably access the appropriate
// deviceScaleFactor from here. It is critical that callers use CachedImage::brokenImage()
// when they need the real, deviceScaleFactor-appropriate broken image icon.
return brokenImage();
}
if (m_image)
return lookupImageForRenderer(renderer);
return Image::nullImage();
}
blink::Image* ImageResource::image()
{
ASSERT(!isPurgeable());
if (errorOccurred()) {
// Returning the 1x broken image is non-ideal, but we cannot reliably access the appropriate
// deviceScaleFactor from here. It is critical that callers use ImageResource::brokenImage()
// when they need the real, deviceScaleFactor-appropriate broken image icon.
return brokenImage(1).first;
}
if (m_image)
return m_image.get();
return blink::Image::nullImage();
}
const String& ScriptResource::script()
{
ASSERT(!isPurgeable());
ASSERT(isLoaded());
if (!m_script && m_data) {
String script = decodedText();
m_data.clear();
// We lie a it here and claim that script counts as encoded data (even though it's really decoded data).
// That's because the MemoryCache thinks that it can clear out decoded data by calling destroyDecodedData(),
// but we can't destroy script in destroyDecodedData because that's our only copy of the data!
setEncodedSize(script.sizeInBytes());
m_script = AtomicString(script);
}
return m_script.string();
}
Image* CachedImage::image(bool brokenImageNeeded) const // CAPP_WEB_HIDE_BROKEN_IMAGE
{
ASSERT(!isPurgeable());
// CAPP_WEB_HIDE_BROKEN_IMAGE
if (!brokenImageNeeded) {
if (m_image&&!errorOccurred())
return m_image.get();
return Image::nullImage();
}
// CAPP_WEB_HIDE_BROKEN_IMAGE_END
if (errorOccurred() && m_shouldPaintBrokenImage)
return brokenImage();
if (m_image)
return m_image.get();
return Image::nullImage();
}
IntSize CachedImage::imageSize(float multiplier) const
{
ASSERT(!isPurgeable());
if (!m_image)
return IntSize();
if (multiplier == 1.0f)
return m_image->size();
// Don't let images that have a width/height >= 1 shrink below 1 when zoomed.
bool hasWidth = m_image->size().width() > 0;
bool hasHeight = m_image->size().height() > 0;
int width = m_image->size().width() * (m_image->hasRelativeWidth() ? 1.0f : multiplier);
int height = m_image->size().height() * (m_image->hasRelativeHeight() ? 1.0f : multiplier);
if (hasWidth)
width = max(1, width);
if (hasHeight)
height = max(1, height);
return IntSize(width, height);
}