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
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/utility/utility_thread_impl.h"
#include <stddef.h>
#include "base/command_line.h"
#include "base/memory/scoped_vector.h"
#include "content/child/blink_platform_impl.h"
#include "content/child/child_process.h"
#include "content/common/child_process_messages.h"
#include "content/common/utility_messages.h"
#include "content/public/common/content_switches.h"
#include "content/public/utility/content_utility_client.h"
#include "ipc/ipc_sync_channel.h"
#include "third_party/WebKit/public/web/WebKit.h"
#if defined(OS_POSIX) && defined(ENABLE_PLUGINS)
#include "base/files/file_path.h"
#include "content/common/plugin_list.h"
#endif
namespace content {
namespace {
template<typename SRC, typename DEST>
void ConvertVector(const SRC& src, DEST* dest) {
dest->reserve(src.size());
for (typename SRC::const_iterator i = src.begin(); i != src.end(); ++i)
dest->push_back(typename DEST::value_type(*i));
}
} // namespace
UtilityThreadImpl::UtilityThreadImpl() : single_process_(false) {
Init();
}
UtilityThreadImpl::UtilityThreadImpl(const std::string& channel_name)
: ChildThreadImpl(Options(channel_name, false)),
single_process_(true) {
Init();
}
UtilityThreadImpl::~UtilityThreadImpl() {
}
void UtilityThreadImpl::Shutdown() {
ChildThreadImpl::Shutdown();
if (!single_process_)
blink::shutdown();
}
void UtilityThreadImpl::ReleaseProcessIfNeeded() {
if (batch_mode_)
return;
if (single_process_) {
// Close the channel to cause UtilityProcessHostImpl to be deleted. We need
// to take a different code path than the multi-process case because that
// depends on the child process going away to close the channel, but that
// can't happen when we're in single process mode.
channel()->Close();
} else {
ChildProcess::current()->ReleaseProcess();
}
}
void UtilityThreadImpl::Init() {
batch_mode_ = false;
ChildProcess::current()->AddRefProcess();
if (!single_process_) {
// We can only initialize WebKit on one thread, and in single process mode
// we run the utility thread on separate thread. This means that if any code
// needs WebKit initialized in the utility process, they need to have
// another path to support single process mode.
blink_platform_impl_.reset(new BlinkPlatformImpl);
blink::initialize(blink_platform_impl_.get());
}
GetContentClient()->utility()->UtilityThreadStarted();
}
bool UtilityThreadImpl::OnControlMessageReceived(const IPC::Message& msg) {
if (GetContentClient()->utility()->OnMessageReceived(msg))
return true;
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(UtilityThreadImpl, msg)
IPC_MESSAGE_HANDLER(UtilityMsg_BatchMode_Started, OnBatchModeStarted)
IPC_MESSAGE_HANDLER(UtilityMsg_BatchMode_Finished, OnBatchModeFinished)
#if defined(OS_POSIX) && defined(ENABLE_PLUGINS)
IPC_MESSAGE_HANDLER(UtilityMsg_LoadPlugins, OnLoadPlugins)
#endif
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void UtilityThreadImpl::OnBatchModeStarted() {
batch_mode_ = true;
}
void UtilityThreadImpl::OnBatchModeFinished() {
batch_mode_ = false;
ReleaseProcessIfNeeded();
}
#if defined(OS_POSIX) && defined(ENABLE_PLUGINS)
void UtilityThreadImpl::OnLoadPlugins(
const std::vector<base::FilePath>& plugin_paths) {
PluginList* plugin_list = PluginList::Singleton();
std::vector<WebPluginInfo> plugins;
// TODO(bauerb): If we restart loading plug-ins, we might mess up the logic in
// PluginList::ShouldLoadPlugin due to missing the previously loaded plug-ins
// in |plugin_groups|.
for (size_t i = 0; i < plugin_paths.size(); ++i) {
WebPluginInfo plugin;
if (!plugin_list->LoadPluginIntoPluginList(
plugin_paths[i], &plugins, &plugin))
Send(new UtilityHostMsg_LoadPluginFailed(i, plugin_paths[i]));
else
Send(new UtilityHostMsg_LoadedPlugin(i, plugin));
}
ReleaseProcessIfNeeded();
}
#endif
} // namespace content
|
