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
|
// Copyright (c) 2009 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 "chrome/worker/webworkerclient_proxy.h"
#include "base/command_line.h"
#include "chrome/common/child_process.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/ipc_logging.h"
#include "chrome/common/worker_messages.h"
#include "chrome/renderer/webworker_proxy.h"
#include "chrome/worker/worker_thread.h"
#include "webkit/api/public/WebString.h"
#include "webkit/api/public/WebURL.h"
#include "webkit/api/public/WebWorker.h"
using WebKit::WebString;
using WebKit::WebWorker;
using WebKit::WebWorkerClient;
namespace {
// How long to wait for worker to finish after it's been told to terminate.
static const int kMaxTimeForRunawayWorkerMs = 3000;
class KillProcessTask : public Task {
public:
KillProcessTask(WebWorkerClientProxy* proxy) : proxy_(proxy) { }
void Run() {
// This shuts down the process cleanly from the perspective of the browser
// process, and avoids the crashed worker infobar from appearing to the new
// page.
proxy_->workerContextDestroyed();
}
private:
WebWorkerClientProxy* proxy_;
};
}
WebWorkerClientProxy::WebWorkerClientProxy(const GURL& url, int route_id)
: url_(url),
route_id_(route_id),
ALLOW_THIS_IN_INITIALIZER_LIST(impl_(WebWorker::create(this))) {
WorkerThread::current()->AddRoute(route_id_, this);
ChildProcess::current()->AddRefProcess();
}
WebWorkerClientProxy::~WebWorkerClientProxy() {
WorkerThread::current()->RemoveRoute(route_id_);
ChildProcess::current()->ReleaseProcess();
}
void WebWorkerClientProxy::postMessageToWorkerObject(
const WebString& message) {
Send(new WorkerHostMsg_PostMessageToWorkerObject(route_id_, message));
}
void WebWorkerClientProxy::postExceptionToWorkerObject(
const WebString& error_message,
int line_number,
const WebString& source_url) {
Send(new WorkerHostMsg_PostExceptionToWorkerObject(
route_id_, error_message, line_number, source_url));
}
void WebWorkerClientProxy::postConsoleMessageToWorkerObject(
int destination,
int source,
int level,
const WebString& message,
int line_number,
const WebString& source_url) {
Send(new WorkerHostMsg_PostConsoleMessageToWorkerObject(
route_id_, destination, source, level,message, line_number, source_url));
}
void WebWorkerClientProxy::confirmMessageFromWorkerObject(
bool has_pending_activity) {
Send(new WorkerHostMsg_ConfirmMessageFromWorkerObject(
route_id_, has_pending_activity));
}
void WebWorkerClientProxy::reportPendingActivity(bool has_pending_activity) {
Send(new WorkerHostMsg_ReportPendingActivity(
route_id_, has_pending_activity));
}
void WebWorkerClientProxy::workerContextDestroyed() {
Send(new WorkerHostMsg_WorkerContextDestroyed(route_id_));
delete this;
}
WebKit::WebWorker* WebWorkerClientProxy::createWorker(
WebKit::WebWorkerClient* client) {
return new WebWorkerProxy(client, WorkerThread::current(), 0);
}
bool WebWorkerClientProxy::Send(IPC::Message* message) {
return WorkerThread::current()->Send(message);
}
void WebWorkerClientProxy::OnMessageReceived(const IPC::Message& message) {
if (!impl_)
return;
IPC_BEGIN_MESSAGE_MAP(WebWorkerClientProxy, message)
IPC_MESSAGE_FORWARD(WorkerMsg_StartWorkerContext, impl_,
WebWorker::startWorkerContext)
IPC_MESSAGE_HANDLER(WorkerMsg_TerminateWorkerContext,
OnTerminateWorkerContext)
IPC_MESSAGE_FORWARD(WorkerMsg_PostMessageToWorkerContext, impl_,
WebWorker::postMessageToWorkerContext)
IPC_MESSAGE_FORWARD(WorkerMsg_WorkerObjectDestroyed, impl_,
WebWorker::workerObjectDestroyed)
IPC_END_MESSAGE_MAP()
}
void WebWorkerClientProxy::OnTerminateWorkerContext() {
impl_->terminateWorkerContext();
// Avoid a worker doing a while(1) from never exiting.
if (CommandLine::ForCurrentProcess()->HasSwitch(
switches::kWebWorkerShareProcesses)) {
// Can't kill the process since there could be workers from other
// renderer process.
NOTIMPLEMENTED();
return;
}
MessageLoop::current()->PostDelayedTask(FROM_HERE,
new KillProcessTask(this), kMaxTimeForRunawayWorkerMs);
}
|
