SuspendedPageProxy.cpp [plain text]
#include "config.h"
#include "SuspendedPageProxy.h"
#include "Logging.h"
#include "WebPageMessages.h"
#include "WebPageProxy.h"
#include "WebPageProxyMessages.h"
#include "WebProcessMessages.h"
#include "WebProcessPool.h"
#include "WebProcessProxy.h"
#include <WebCore/URL.h>
#include <wtf/DebugUtilities.h>
using namespace WebCore;
namespace WebKit {
#if !LOG_DISABLED
static const HashSet<IPC::StringReference>& messageNamesToIgnoreWhileSuspended()
{
static NeverDestroyed<HashSet<IPC::StringReference>> messageNames;
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
messageNames.get().add("BackForwardAddItem");
messageNames.get().add("ClearAllEditCommands");
messageNames.get().add("DidChangeContentSize");
messageNames.get().add("DidChangeMainDocument");
messageNames.get().add("DidChangeProgress");
messageNames.get().add("DidCommitLoadForFrame");
messageNames.get().add("DidDestroyNavigation");
messageNames.get().add("DidFinishDocumentLoadForFrame");
messageNames.get().add("DidFinishProgress");
messageNames.get().add("DidFirstLayoutForFrame");
messageNames.get().add("DidFirstVisuallyNonEmptyLayoutForFrame");
messageNames.get().add("DidNavigateWithNavigationData");
messageNames.get().add("DidReachLayoutMilestone");
messageNames.get().add("DidRestoreScrollPosition");
messageNames.get().add("DidSaveToPageCache");
messageNames.get().add("DidStartProgress");
messageNames.get().add("DidStartProvisionalLoadForFrame");
messageNames.get().add("EditorStateChanged");
messageNames.get().add("PageExtendedBackgroundColorDidChange");
messageNames.get().add("SetRenderTreeSize");
messageNames.get().add("SetStatusText");
messageNames.get().add("SetNetworkRequestsInProgress");
});
return messageNames;
}
#endif
SuspendedPageProxy::SuspendedPageProxy(WebPageProxy& page, WebProcessProxy& process, WebBackForwardListItem& item)
: m_page(page)
, m_process(&process)
, m_backForwardListItem(item)
, m_origin(SecurityOriginData::fromURL({ ParsedURLString, item.url() }))
{
m_backForwardListItem->setSuspendedPage(this);
m_process->processPool().registerSuspendedPageProxy(*this);
m_process->send(Messages::WebPage::SetIsSuspended(true), m_page.pageID());
}
SuspendedPageProxy::~SuspendedPageProxy()
{
if (auto process = makeRefPtr(m_process)) {
process->suspendedPageWasDestroyed(*this);
process->processPool().unregisterSuspendedPageProxy(*this);
}
m_backForwardListItem->setSuspendedPage(nullptr);
}
void SuspendedPageProxy::webProcessDidClose(WebProcessProxy& process)
{
ASSERT_UNUSED(process, &process == m_process);
m_process->processPool().unregisterSuspendedPageProxy(*this);
m_process = nullptr;
m_page.suspendedPageClosed(*this);
m_backForwardListItem->setSuspendedPage(nullptr);
}
void SuspendedPageProxy::destroyWebPageInWebProcess()
{
m_process->send(Messages::WebPage::Close(), m_page.pageID());
m_page.suspendedPageClosed(*this);
}
void SuspendedPageProxy::didFinishLoad()
{
ASSERT(m_process);
LOG(ProcessSwapping, "SuspendedPageProxy %s from process %i finished transition to suspended", loggingString(), m_process->processIdentifier());
m_finishedSuspending = true;
m_process->send(Messages::WebProcess::UpdateActivePages(), 0);
}
void SuspendedPageProxy::didReceiveMessage(IPC::Connection&, IPC::Decoder& decoder)
{
ASSERT(decoder.messageReceiverName() == Messages::WebPageProxy::messageReceiverName());
if (decoder.messageName() == Messages::WebPageProxy::DidFinishLoadForFrame::name()) {
didFinishLoad();
return;
}
#if !LOG_DISABLED
if (!messageNamesToIgnoreWhileSuspended().contains(decoder.messageName()))
LOG(ProcessSwapping, "SuspendedPageProxy received unexpected WebPageProxy message '%s'", decoder.messageName().toString().data());
#endif
}
#if !LOG_DISABLED
const char* SuspendedPageProxy::loggingString() const
{
return debugString("(", String::format("%p", this), " page ID ", String::number(m_page.pageID()), ", m_finishedSuspending ", String::number(m_finishedSuspending), ")");
}
#endif
}