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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
// 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 <windows.h>
#include "chrome/browser/hang_monitor/hung_plugin_action.h"
#include "base/metrics/histogram.h"
#include "base/version.h"
#include "chrome/browser/ui/simple_message_box.h"
#include "chrome/common/logging_chrome.h"
#include "content/public/browser/plugin_service.h"
#include "content/public/common/webplugininfo.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/gfx/win/hwnd_util.h"
namespace {
const wchar_t kGTalkPluginName[] = L"Google Talk Plugin";
const int kGTalkPluginLogMinVersion = 26; // For version 2.6 and below.
enum GTalkPluginLogVersion {
GTALK_PLUGIN_VERSION_MIN = 0,
GTALK_PLUGIN_VERSION_27,
GTALK_PLUGIN_VERSION_28,
GTALK_PLUGIN_VERSION_29,
GTALK_PLUGIN_VERSION_30,
GTALK_PLUGIN_VERSION_31,
GTALK_PLUGIN_VERSION_32,
GTALK_PLUGIN_VERSION_33,
GTALK_PLUGIN_VERSION_34,
GTALK_PLUGIN_VERSION_MAX
};
// Converts the version string of Google Talk Plugin to a version enum. The
// version format is "major(1 digit).minor(1 digit).sub(1 or 2 digits)",
// for example, "2.7.10" and "2.8.1". Converts the string to a number as
// 10 * major + minor - kGTalkPluginLogMinVersion.
GTalkPluginLogVersion GetGTalkPluginVersion(const string16& version) {
int gtalk_plugin_version = GTALK_PLUGIN_VERSION_MIN;
Version plugin_version;
content::WebPluginInfo::CreateVersionFromString(version, &plugin_version);
if (plugin_version.IsValid() && plugin_version.components().size() >= 2) {
gtalk_plugin_version = 10 * plugin_version.components()[0] +
plugin_version.components()[1] - kGTalkPluginLogMinVersion;
}
if (gtalk_plugin_version < GTALK_PLUGIN_VERSION_MIN)
return GTALK_PLUGIN_VERSION_MIN;
if (gtalk_plugin_version > GTALK_PLUGIN_VERSION_MAX)
return GTALK_PLUGIN_VERSION_MAX;
return static_cast<GTalkPluginLogVersion>(gtalk_plugin_version);
}
} // namespace
HungPluginAction::HungPluginAction() : current_hung_plugin_window_(NULL) {
}
HungPluginAction::~HungPluginAction() {
}
bool HungPluginAction::OnHungWindowDetected(HWND hung_window,
HWND top_level_window,
ActionOnHungWindow* action) {
if (NULL == action) {
return false;
}
if (!IsWindow(hung_window)) {
return false;
}
bool continue_hang_detection = true;
DWORD hung_window_process_id = 0;
DWORD top_level_window_process_id = 0;
GetWindowThreadProcessId(hung_window, &hung_window_process_id);
GetWindowThreadProcessId(top_level_window, &top_level_window_process_id);
*action = HungWindowNotification::HUNG_WINDOW_IGNORE;
if (top_level_window_process_id != hung_window_process_id) {
string16 plugin_name;
string16 plugin_version;
GetPluginNameAndVersion(hung_window,
top_level_window_process_id,
&plugin_name,
&plugin_version);
if (plugin_name.empty()) {
plugin_name = l10n_util::GetStringUTF16(IDS_UNKNOWN_PLUGIN_NAME);
} else if (kGTalkPluginName == plugin_name) {
UMA_HISTOGRAM_ENUMERATION("GTalkPlugin.Hung",
GetGTalkPluginVersion(plugin_version),
GTALK_PLUGIN_VERSION_MAX + 1);
}
if (logging::DialogsAreSuppressed()) {
NOTREACHED() << "Terminated a hung plugin process.";
*action = HungWindowNotification::HUNG_WINDOW_TERMINATE_PROCESS;
} else {
const string16 title = l10n_util::GetStringUTF16(
IDS_BROWSER_HANGMONITOR_TITLE);
const string16 message = l10n_util::GetStringFUTF16(
IDS_BROWSER_HANGMONITOR, plugin_name);
// Before displaying the message box, invoke SendMessageCallback on the
// hung window. If the callback ever hits, the window is not hung anymore
// and we can dismiss the message box.
SendMessageCallback(hung_window,
WM_NULL,
0,
0,
HungWindowResponseCallback,
reinterpret_cast<ULONG_PTR>(this));
current_hung_plugin_window_ = hung_window;
if (chrome::ShowMessageBox(NULL, title, message,
chrome::MESSAGE_BOX_TYPE_QUESTION) ==
chrome::MESSAGE_BOX_RESULT_YES) {
*action = HungWindowNotification::HUNG_WINDOW_TERMINATE_PROCESS;
} else {
// If the user choses to ignore the hung window warning, the
// message timeout for this window should be doubled. We only
// double the timeout property on the window if the property
// exists. The property is deleted if the window becomes
// responsive.
continue_hang_detection = false;
#pragma warning(disable:4311)
int child_window_message_timeout =
reinterpret_cast<int>(GetProp(
hung_window, HungWindowDetector::kHungChildWindowTimeout));
#pragma warning(default:4311)
if (child_window_message_timeout) {
child_window_message_timeout *= 2;
#pragma warning(disable:4312)
SetProp(hung_window, HungWindowDetector::kHungChildWindowTimeout,
reinterpret_cast<HANDLE>(child_window_message_timeout));
#pragma warning(default:4312)
}
}
current_hung_plugin_window_ = NULL;
}
}
if (HungWindowNotification::HUNG_WINDOW_TERMINATE_PROCESS == *action) {
// Enable the top-level window just in case the plugin had been
// displaying a modal box that had disabled the top-level window
EnableWindow(top_level_window, TRUE);
}
return continue_hang_detection;
}
void HungPluginAction::OnWindowResponsive(HWND window) {
if (window == current_hung_plugin_window_) {
// The message timeout for this window should fallback to the default
// timeout as this window is now responsive.
RemoveProp(window, HungWindowDetector::kHungChildWindowTimeout);
// The monitored plugin recovered. Let's dismiss the message box.
EnumThreadWindows(GetCurrentThreadId(),
reinterpret_cast<WNDENUMPROC>(DismissMessageBox),
NULL);
}
}
bool HungPluginAction::GetPluginNameAndVersion(HWND plugin_window,
DWORD browser_process_id,
string16* plugin_name,
string16* plugin_version) {
DCHECK(plugin_name);
DCHECK(plugin_version);
HWND window_to_check = plugin_window;
while (NULL != window_to_check) {
DWORD process_id = 0;
GetWindowThreadProcessId(window_to_check, &process_id);
if (process_id == browser_process_id) {
// If we have reached a window the that belongs to the browser process
// we have gone too far.
return false;
}
if (content::PluginService::GetInstance()->GetPluginInfoFromWindow(
window_to_check, plugin_name, plugin_version)) {
return true;
}
window_to_check = GetParent(window_to_check);
}
return false;
}
// static
BOOL CALLBACK HungPluginAction::DismissMessageBox(HWND window, LPARAM ignore) {
string16 class_name = gfx::GetClassName(window);
// #32770 is the dialog window class which is the window class of
// the message box being displayed.
if (class_name == L"#32770") {
EndDialog(window, IDNO);
return FALSE;
}
return TRUE;
}
// static
void CALLBACK HungPluginAction::HungWindowResponseCallback(HWND target_window,
UINT message,
ULONG_PTR data,
LRESULT result) {
HungPluginAction* instance = reinterpret_cast<HungPluginAction*>(data);
DCHECK(NULL != instance);
if (NULL != instance) {
instance->OnWindowResponsive(target_window);
}
}
|
