1/*
2 * Copyright (C) 2010-2017 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#include "config.h"
27#include "VisitedLinkStore.h"
28
29#include "VisitedLinkStoreMessages.h"
30#include "VisitedLinkTableControllerMessages.h"
31#include "WebProcessMessages.h"
32#include "WebProcessPool.h"
33#include "WebProcessProxy.h"
34
35namespace WebKit {
36using namespace WebCore;
37
38Ref<VisitedLinkStore> VisitedLinkStore::create()
39{
40 return adoptRef(*new VisitedLinkStore);
41}
42
43VisitedLinkStore::~VisitedLinkStore()
44{
45 RELEASE_ASSERT(m_processes.isEmpty());
46}
47
48VisitedLinkStore::VisitedLinkStore()
49 : m_linkHashStore(*this)
50{
51}
52
53void VisitedLinkStore::addProcess(WebProcessProxy& process)
54{
55 ASSERT(process.state() == WebProcessProxy::State::Running);
56 ASSERT(!m_processes.contains(&process));
57
58 if (!m_processes.add(&process).isNewEntry)
59 return;
60
61 process.addMessageReceiver(Messages::VisitedLinkStore::messageReceiverName(), identifier(), *this);
62
63 if (m_linkHashStore.isEmpty())
64 return;
65
66 sendStoreHandleToProcess(process);
67}
68
69void VisitedLinkStore::removeProcess(WebProcessProxy& process)
70{
71 if (!m_processes.remove(&process))
72 return;
73
74 process.removeMessageReceiver(Messages::VisitedLinkStore::messageReceiverName(), identifier());
75}
76
77void VisitedLinkStore::addVisitedLinkHash(SharedStringHash linkHash)
78{
79 m_linkHashStore.scheduleAddition(linkHash);
80}
81
82bool VisitedLinkStore::containsVisitedLinkHash(WebCore::SharedStringHash linkHash)
83{
84 return m_linkHashStore.contains(linkHash);
85}
86
87void VisitedLinkStore::removeVisitedLinkHash(WebCore::SharedStringHash linkHash)
88{
89 m_linkHashStore.scheduleRemoval(linkHash);
90}
91
92void VisitedLinkStore::removeAll()
93{
94 m_linkHashStore.clear();
95
96 for (WebProcessProxy* process : m_processes) {
97 ASSERT(process->processPool().processes().contains(process));
98 process->send(Messages::VisitedLinkTableController::RemoveAllVisitedLinks(), identifier());
99 }
100}
101
102void VisitedLinkStore::webProcessWillOpenConnection(WebProcessProxy&, IPC::Connection&)
103{
104 // FIXME: Implement.
105}
106
107void VisitedLinkStore::webProcessDidCloseConnection(WebProcessProxy&, IPC::Connection&)
108{
109 // FIXME: Implement.
110}
111
112void VisitedLinkStore::addVisitedLinkHashFromPage(uint64_t pageID, SharedStringHash linkHash)
113{
114 if (auto* webPageProxy = WebProcessProxy::webPage(pageID)) {
115 if (!webPageProxy->addsVisitedLinks())
116 return;
117 }
118
119 addVisitedLinkHash(linkHash);
120}
121
122void VisitedLinkStore::sendStoreHandleToProcess(WebProcessProxy& process)
123{
124 ASSERT(process.processPool().processes().contains(&process));
125
126 SharedMemory::Handle handle;
127 if (!m_linkHashStore.createSharedMemoryHandle(handle))
128 return;
129
130 process.send(Messages::VisitedLinkTableController::SetVisitedLinkTable(handle), identifier());
131}
132
133void VisitedLinkStore::didInvalidateSharedMemory()
134{
135 for (WebProcessProxy* process : m_processes)
136 sendStoreHandleToProcess(*process);
137}
138
139void VisitedLinkStore::didUpdateSharedStringHashes(const Vector<WebCore::SharedStringHash>& addedHashes, const Vector<WebCore::SharedStringHash>& removedHashes)
140{
141 ASSERT(!addedHashes.isEmpty() || !removedHashes.isEmpty());
142
143 for (auto* process : m_processes) {
144 ASSERT(process->processPool().processes().contains(process));
145
146 if (addedHashes.size() > 20 || !removedHashes.isEmpty())
147 process->send(Messages::VisitedLinkTableController::AllVisitedLinkStateChanged(), identifier());
148 else
149 process->send(Messages::VisitedLinkTableController::VisitedLinkStateChanged(addedHashes), identifier());
150 }
151}
152
153} // namespace WebKit
154