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
|
/*
* Copyright (C) 2009 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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 WebWorkerClientImpl_h
#define WebWorkerClientImpl_h
#if ENABLE(WORKERS)
#include "WebWorkerClient.h"
#include "WorkerContextProxy.h"
#include <wtf/PassOwnPtr.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class ScriptExecutionContext;
}
namespace WebKit {
class WebWorker;
// The purpose of this class is to provide a WorkerContextProxy
// implementation that we can give to WebKit. Internally, it converts the
// data types to Chrome compatible ones so that renderer code can use it over
// IPC.
class WebWorkerClientImpl : public WebCore::WorkerContextProxy
, public WebWorkerClient {
public:
WebWorkerClientImpl(WebCore::Worker*);
// WebCore::WorkerContextProxy Factory.
static WebCore::WorkerContextProxy* createWorkerContextProxy(WebCore::Worker*);
void setWebWorker(WebWorker*);
// WebCore::WorkerContextProxy methods:
// These are called on the thread that created the worker. In the renderer
// process, this will be the main WebKit thread. In the worker process, this
// will be the thread of the executing worker (not the main WebKit thread).
virtual void startWorkerContext(const WebCore::KURL&,
const WebCore::String&,
const WebCore::String&);
virtual void terminateWorkerContext();
virtual void postMessageToWorkerContext(
PassRefPtr<WebCore::SerializedScriptValue> message,
PassOwnPtr<WebCore::MessagePortChannelArray> channels);
virtual bool hasPendingActivity() const;
virtual void workerObjectDestroyed();
// WebWorkerClient methods:
// These are called on the main WebKit thread.
virtual void postMessageToWorkerObject(const WebString&, const WebMessagePortChannelArray&);
virtual void postExceptionToWorkerObject(const WebString&, int, const WebString&);
// FIXME: the below is for compatibility only and should be
// removed once Chromium is updated to remove message
// destination parameter <http://webkit.org/b/37155>.
virtual void postConsoleMessageToWorkerObject(int, int, int, int, const WebString&, int, const WebString&);
virtual void postConsoleMessageToWorkerObject(int, int, int, const WebString&, int, const WebString&);
virtual void confirmMessageFromWorkerObject(bool);
virtual void reportPendingActivity(bool);
virtual void workerContextClosed();
virtual void workerContextDestroyed();
virtual WebWorker* createWorker(WebWorkerClient*) { return 0; }
virtual WebNotificationPresenter* notificationPresenter()
{
// FIXME: Notifications not yet supported in workers.
return 0;
}
virtual WebApplicationCacheHost* createApplicationCacheHost(WebApplicationCacheHostClient*) { return 0; }
virtual bool allowDatabase(WebFrame*, const WebString& name, const WebString& displayName, unsigned long estimatedSize)
{
ASSERT_NOT_REACHED();
return true;
}
private:
virtual ~WebWorkerClientImpl();
// Methods used to support WebWorkerClientImpl being constructed on worker
// threads.
// These tasks are dispatched on the WebKit thread.
static void startWorkerContextTask(WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* thisPtr,
const WebCore::String& scriptURL,
const WebCore::String& userAgent,
const WebCore::String& sourceCode);
static void terminateWorkerContextTask(WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* thisPtr);
static void postMessageToWorkerContextTask(WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* thisPtr,
const WebCore::String& message,
PassOwnPtr<WebCore::MessagePortChannelArray> channels);
static void workerObjectDestroyedTask(WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* thisPtr);
// These tasks are dispatched on the thread that created the worker (i.e.
// main WebKit thread in renderer process, and the worker thread in the
// worker process).
static void postMessageToWorkerObjectTask(WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* thisPtr,
const WebCore::String& message,
PassOwnPtr<WebCore::MessagePortChannelArray> channels);
static void postExceptionToWorkerObjectTask(WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* thisPtr,
const WebCore::String& message,
int lineNumber,
const WebCore::String& sourceURL);
static void postConsoleMessageToWorkerObjectTask(WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* thisPtr,
int sourceId,
int messageType,
int messageLevel,
const WebCore::String& message,
int lineNumber,
const WebCore::String& sourceURL);
static void confirmMessageFromWorkerObjectTask(WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* thisPtr);
static void reportPendingActivityTask(WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* thisPtr,
bool hasPendingActivity);
// Guard against context from being destroyed before a worker exits.
RefPtr<WebCore::ScriptExecutionContext> m_scriptExecutionContext;
WebCore::Worker* m_worker;
WebWorker* m_webWorker;
bool m_askedToTerminate;
unsigned m_unconfirmedMessageCount;
bool m_workerContextHadPendingActivity;
ThreadIdentifier m_workerThreadId;
};
} // namespace WebKit;
#endif // ENABLE(WORKERS)
#endif
|
