1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/*
* Copyright (C) 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef NetworkResourceLoadScheduler_h
#define NetworkResourceLoadScheduler_h
#include <WebCore/ResourceLoadPriority.h>
#include <WebCore/Timer.h>
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/text/StringHash.h>
#if ENABLE(NETWORK_PROCESS)
namespace WebCore {
class KURL;
}
namespace WebKit {
class HostRecord;
class SchedulableLoader;
class NetworkResourceLoadScheduler {
WTF_MAKE_NONCOPYABLE(NetworkResourceLoadScheduler); WTF_MAKE_FAST_ALLOCATED;
public:
NetworkResourceLoadScheduler();
// Adds the request to the queue for its host.
void scheduleLoader(PassRefPtr<SchedulableLoader>);
// Called by the WebProcess when a ResourceLoader is being cleaned up.
void removeLoader(SchedulableLoader*);
// Called within the NetworkProcess on a background thread when a resource load has finished.
void scheduleRemoveLoader(SchedulableLoader*);
void receivedRedirect(SchedulableLoader*, const WebCore::KURL& redirectURL);
void servePendingRequests(WebCore::ResourceLoadPriority = WebCore::ResourceLoadPriorityVeryLow);
// For NetworkProcess statistics reporting.
uint64_t hostsPendingCount() const;
uint64_t loadsPendingCount() const;
uint64_t hostsActiveCount() const;
uint64_t loadsActiveCount() const;
private:
enum CreateHostPolicy {
CreateIfNotFound,
FindOnly
};
HostRecord* hostForURL(const WebCore::KURL&, CreateHostPolicy = FindOnly);
void scheduleServePendingRequests();
void requestTimerFired(WebCore::Timer<NetworkResourceLoadScheduler>*);
void platformInitializeMaximumHTTPConnectionCountPerHost();
static void removeScheduledLoaders(void* context);
void removeScheduledLoaders();
typedef HashMap<String, RefPtr<HostRecord>, StringHash> HostMap;
HostMap m_hosts;
typedef HashSet<RefPtr<SchedulableLoader>> SchedulableLoaderSet;
SchedulableLoaderSet m_loaders;
RefPtr<HostRecord> m_nonHTTPProtocolHost;
bool m_isSerialLoadingEnabled;
WebCore::Timer<NetworkResourceLoadScheduler> m_requestTimer;
Mutex m_loadersToRemoveMutex;
Vector<RefPtr<SchedulableLoader>> m_loadersToRemove;
unsigned m_maxRequestsInFlightPerHost;
};
} // namespace WebKit
#endif // ENABLE(NETWORK_PROCESS)
#endif // NetworkResourceLoadScheduler_h
|
