blob: 5f62f777aa79b0075573e5afccc56d2e63552ea8 [file] [log] [blame]
/*
Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
Copyright (C) 2004, 2006-2008, 2015 Apple Inc. All rights reserved.
Copyright (C) 2010 Google Inc. All rights reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#pragma once
#include <WebCore/FrameLoaderTypes.h>
#include <WebCore/LoaderStrategy.h>
#include <WebCore/ResourceLoadPriority.h>
#include <WebCore/ResourceLoaderOptions.h>
#include <WebCore/Timer.h>
#include <array>
#include <wtf/Deque.h>
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/Noncopyable.h>
#include <wtf/text/StringHash.h>
#include <wtf/text/WTFString.h>
class WebResourceLoadScheduler;
WebResourceLoadScheduler& webResourceLoadScheduler();
class WebResourceLoadScheduler final : public WebCore::LoaderStrategy {
WTF_MAKE_NONCOPYABLE(WebResourceLoadScheduler); WTF_MAKE_FAST_ALLOCATED;
public:
WebResourceLoadScheduler();
void loadResource(WebCore::Frame&, WebCore::CachedResource&, WebCore::ResourceRequest&&, const WebCore::ResourceLoaderOptions&, CompletionHandler<void(RefPtr<WebCore::SubresourceLoader>&&)>&&) final;
void loadResourceSynchronously(WebCore::FrameLoader&, unsigned long, const WebCore::ResourceRequest&, WebCore::ClientCredentialPolicy, const WebCore::FetchOptions&, const WebCore::HTTPHeaderMap&, WebCore::ResourceError&, WebCore::ResourceResponse&, Vector<char>&) final;
void pageLoadCompleted(WebCore::PageIdentifier) final;
void remove(WebCore::ResourceLoader*) final;
void setDefersLoading(WebCore::ResourceLoader&, bool) final;
void crossOriginRedirectReceived(WebCore::ResourceLoader*, const URL& redirectURL) final;
void servePendingRequests(WebCore::ResourceLoadPriority minimumPriority = WebCore::ResourceLoadPriority::VeryLow) final;
void suspendPendingRequests() final;
void resumePendingRequests() final;
void startPingLoad(WebCore::Frame&, WebCore::ResourceRequest&, const WebCore::HTTPHeaderMap&, const WebCore::FetchOptions&, WebCore::ContentSecurityPolicyImposition, PingLoadCompletionHandler&&) final;
void preconnectTo(WebCore::FrameLoader&, const URL&, WebCore::StoredCredentialsPolicy, PreconnectCompletionHandler&&) final;
void setCaptureExtraNetworkLoadMetricsEnabled(bool) final { }
bool isSerialLoadingEnabled() const { return m_isSerialLoadingEnabled; }
void setSerialLoadingEnabled(bool b) { m_isSerialLoadingEnabled = b; }
void schedulePluginStreamLoad(WebCore::Frame&, WebCore::NetscapePlugInStreamLoaderClient&, WebCore::ResourceRequest&&, CompletionHandler<void(RefPtr<WebCore::NetscapePlugInStreamLoader>&&)>&&);
bool isOnLine() const final;
void addOnlineStateChangeListener(WTF::Function<void(bool)>&&) final;
protected:
virtual ~WebResourceLoadScheduler();
private:
void scheduleLoad(WebCore::ResourceLoader*);
void scheduleServePendingRequests();
void requestTimerFired();
bool isSuspendingPendingRequests() const { return !!m_suspendPendingRequestsCount; }
class HostInformation {
WTF_MAKE_NONCOPYABLE(HostInformation); WTF_MAKE_FAST_ALLOCATED;
public:
HostInformation(const String&, unsigned);
~HostInformation();
const String& name() const { return m_name; }
void schedule(WebCore::ResourceLoader*, WebCore::ResourceLoadPriority = WebCore::ResourceLoadPriority::VeryLow);
void addLoadInProgress(WebCore::ResourceLoader*);
void remove(WebCore::ResourceLoader*);
bool hasRequests() const;
bool limitRequests(WebCore::ResourceLoadPriority) const;
typedef Deque<RefPtr<WebCore::ResourceLoader>> RequestQueue;
RequestQueue& requestsPending(WebCore::ResourceLoadPriority priority) { return m_requestsPending[priorityToIndex(priority)]; }
private:
static unsigned priorityToIndex(WebCore::ResourceLoadPriority);
std::array<RequestQueue, WebCore::resourceLoadPriorityCount> m_requestsPending;
typedef HashSet<RefPtr<WebCore::ResourceLoader>> RequestMap;
RequestMap m_requestsLoading;
const String m_name;
const unsigned m_maxRequestsInFlight;
};
enum CreateHostPolicy {
CreateIfNotFound,
FindOnly
};
HostInformation* hostForURL(const URL&, CreateHostPolicy = FindOnly);
void servePendingRequests(HostInformation*, WebCore::ResourceLoadPriority);
typedef HashMap<String, HostInformation*, StringHash> HostMap;
HostMap m_hosts;
HostInformation* m_nonHTTPProtocolHost;
WebCore::Timer m_requestTimer;
unsigned m_suspendPendingRequestsCount;
bool m_isSerialLoadingEnabled;
};