1/*
2 * Copyright (C) 2008, 2010, 2016 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. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "AbstractWorker.h"
29#include "ActiveDOMObject.h"
30#include "ContentSecurityPolicyResponseHeaders.h"
31#include "EventTarget.h"
32#include "MessagePort.h"
33#include "WorkerScriptLoaderClient.h"
34#include <JavaScriptCore/RuntimeFlags.h>
35#include <wtf/MonotonicTime.h>
36#include <wtf/Optional.h>
37#include <wtf/text/AtomicStringHash.h>
38
39namespace JSC {
40class ExecState;
41class JSObject;
42class JSValue;
43}
44
45namespace WebCore {
46
47class ScriptExecutionContext;
48class WorkerGlobalScopeProxy;
49class WorkerScriptLoader;
50
51class Worker final : public AbstractWorker, public ActiveDOMObject, private WorkerScriptLoaderClient {
52 WTF_MAKE_ISO_ALLOCATED(Worker);
53public:
54 struct Options {
55 String name;
56 };
57 static ExceptionOr<Ref<Worker>> create(ScriptExecutionContext&, JSC::RuntimeFlags, const String& url, const Options&);
58 virtual ~Worker();
59
60 ExceptionOr<void> postMessage(JSC::ExecState&, JSC::JSValue message, Vector<JSC::Strong<JSC::JSObject>>&&);
61
62 void terminate();
63
64 bool hasPendingActivity() const final;
65
66 String identifier() const { return m_identifier; }
67
68 ScriptExecutionContext* scriptExecutionContext() const final { return ActiveDOMObject::scriptExecutionContext(); }
69
70private:
71 explicit Worker(ScriptExecutionContext&, JSC::RuntimeFlags, const Options&);
72
73 EventTargetInterface eventTargetInterface() const final { return WorkerEventTargetInterfaceType; }
74
75 void notifyNetworkStateChange(bool isOnline);
76
77 void didReceiveResponse(unsigned long identifier, const ResourceResponse&) final;
78 void notifyFinished() final;
79
80 bool canSuspendForDocumentSuspension() const final;
81 void stop() final;
82 const char* activeDOMObjectName() const final;
83
84 static void networkStateChanged(bool isOnLine);
85
86 RefPtr<WorkerScriptLoader> m_scriptLoader;
87 String m_name;
88 String m_identifier;
89 WorkerGlobalScopeProxy& m_contextProxy; // The proxy outlives the worker to perform thread shutdown.
90 Optional<ContentSecurityPolicyResponseHeaders> m_contentSecurityPolicyResponseHeaders;
91 MonotonicTime m_workerCreationTime;
92 bool m_shouldBypassMainWorldContentSecurityPolicy { false };
93 JSC::RuntimeFlags m_runtimeFlags;
94};
95
96} // namespace WebCore
97