1/*
2 * Copyright (C) 2012 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef WebResourceLoadScheduler_h
27#define WebResourceLoadScheduler_h
28
29#include "WebResourceLoader.h"
30#include <WebCore/ResourceLoadPriority.h>
31#include <WebCore/ResourceLoadScheduler.h>
32#include <WebCore/ResourceLoader.h>
33#include <wtf/RunLoop.h>
34
35#if ENABLE(NETWORK_PROCESS)
36
37namespace WebKit {
38
39class NetworkProcessConnection;
40typedef uint64_t ResourceLoadIdentifier;
41
42class WebResourceLoadScheduler : public WebCore::ResourceLoadScheduler {
43    WTF_MAKE_NONCOPYABLE(WebResourceLoadScheduler); WTF_MAKE_FAST_ALLOCATED;
44public:
45    WebResourceLoadScheduler();
46    virtual ~WebResourceLoadScheduler();
47
48    virtual PassRefPtr<WebCore::SubresourceLoader> scheduleSubresourceLoad(WebCore::Frame*, WebCore::CachedResource*, const WebCore::ResourceRequest&, WebCore::ResourceLoadPriority, const WebCore::ResourceLoaderOptions&) override;
49    virtual PassRefPtr<WebCore::NetscapePlugInStreamLoader> schedulePluginStreamLoad(WebCore::Frame*, WebCore::NetscapePlugInStreamLoaderClient*, const WebCore::ResourceRequest&) override;
50
51    virtual void remove(WebCore::ResourceLoader*) override;
52    virtual void setDefersLoading(WebCore::ResourceLoader*, bool) override;
53    virtual void crossOriginRedirectReceived(WebCore::ResourceLoader*, const WebCore::URL& redirectURL) override;
54
55    virtual void servePendingRequests(WebCore::ResourceLoadPriority minimumPriority = WebCore::ResourceLoadPriorityVeryLow) override;
56
57    virtual void suspendPendingRequests() override;
58    virtual void resumePendingRequests() override;
59
60    virtual void setSerialLoadingEnabled(bool) override;
61
62    WebResourceLoader* webResourceLoaderForIdentifier(ResourceLoadIdentifier identifier) const { return m_webResourceLoaders.get(identifier); }
63
64    void networkProcessCrashed();
65
66private:
67    void scheduleLoad(WebCore::ResourceLoader*, WebCore::CachedResource*, WebCore::ResourceLoadPriority, bool shouldClearReferrerOnHTTPSToHTTPRedirect);
68    void scheduleInternallyFailedLoad(WebCore::ResourceLoader*);
69    void internallyFailedLoadTimerFired();
70
71    HashSet<RefPtr<WebCore::ResourceLoader>> m_internallyFailedResourceLoaders;
72    RunLoop::Timer<WebResourceLoadScheduler> m_internallyFailedLoadTimer;
73
74    HashMap<unsigned long, RefPtr<WebResourceLoader>> m_webResourceLoaders;
75
76    unsigned m_suspendPendingRequestsCount;
77
78};
79
80} // namespace WebKit
81
82#endif // ENABLE(NETWORK_PROCESS)
83
84#endif // WebResourceLoadScheduler_h
85