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
|
/*
* Copyright (C) 2008-2021 Apple Inc. All Rights Reserved.
* Copyright (C) 2012 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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.
*/
#pragma once
#include <wtf/Compiler.h>
#include "FetchOptions.h"
#include "WorkerThreadType.h"
#include <JavaScriptCore/Debugger.h>
#include <JavaScriptCore/JSRunLoopTimer.h>
#include <wtf/CheckedPtr.h>
#include <wtf/Forward.h>
#include <wtf/Lock.h>
#include <wtf/MessageQueue.h>
#include <wtf/NakedPtr.h>
#include <wtf/TZoneMalloc.h>
namespace JSC {
class AbstractModuleRecord;
class Exception;
class JSGlobalObject;
class JSModuleRecord;
class VM;
}
namespace WebCore {
class Exception;
class JSDOMGlobalObject;
class ScriptSourceCode;
class WorkerConsoleClient;
class WorkerOrWorkletGlobalScope;
class WorkerScriptFetcher;
class WorkerOrWorkletScriptController final : public CanMakeCheckedPtr<WorkerOrWorkletScriptController> {
WTF_MAKE_TZONE_ALLOCATED(WorkerOrWorkletScriptController);
WTF_MAKE_NONCOPYABLE(WorkerOrWorkletScriptController);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(WorkerOrWorkletScriptController);
public:
WorkerOrWorkletScriptController(WorkerThreadType, Ref<JSC::VM>&&, WorkerOrWorkletGlobalScope*);
~WorkerOrWorkletScriptController();
void releaseHeapAccess();
void acquireHeapAccess();
void addTimerSetNotification(JSC::JSRunLoopTimer::TimerNotificationCallback);
void removeTimerSetNotification(JSC::JSRunLoopTimer::TimerNotificationCallback);
JSDOMGlobalObject* globalScopeWrapper()
{
initScriptIfNeeded();
return m_globalScopeWrapper.get();
}
void attachDebugger(JSC::Debugger*);
void detachDebugger(JSC::Debugger*);
// Async request to terminate a JS run execution. Eventually causes termination
// exception raised during JS execution, if the worker thread happens to run JS.
// After JS execution was terminated in this way, the Worker thread has to use
// forbidExecution()/isExecutionForbidden() to guard against reentry into JS.
// Can be called from any thread.
void scheduleExecutionTermination();
bool isTerminatingExecution() const;
// Called on Worker thread when JS exits with termination exception caused by forbidExecution() request,
// or by Worker thread termination code to prevent future entry into JS.
void forbidExecution();
bool isExecutionForbidden() const;
JSC::VM& vm() { return *m_vm; }
void setException(JSC::Exception*);
void disableEval(const String& errorMessage);
void disableWebAssembly(const String& errorMessage);
void setRequiresTrustedTypes(bool required);
void evaluate(const ScriptSourceCode&, String* returnedExceptionMessage = nullptr);
void evaluate(const ScriptSourceCode&, NakedPtr<JSC::Exception>& returnedException, String* returnedExceptionMessage = nullptr);
JSC::JSValue evaluateModule(const URL&, JSC::AbstractModuleRecord&, JSC::JSValue awaitedValue, JSC::JSValue resumeMode);
void linkAndEvaluateModule(WorkerScriptFetcher&, const ScriptSourceCode&, String* returnedExceptionMessage = nullptr);
bool loadModuleSynchronously(WorkerScriptFetcher&, const ScriptSourceCode&);
void loadAndEvaluateModule(const URL& moduleURL, FetchOptions::Credentials, CompletionHandler<void(std::optional<Exception>&&)>&&);
protected:
WorkerOrWorkletGlobalScope* globalScope() const { return m_globalScope.get(); }
RefPtr<WorkerOrWorkletGlobalScope> protectedGlobalScope() const;
void initScriptIfNeeded()
{
if (!m_globalScopeWrapper)
initScript();
}
WEBCORE_EXPORT void initScript();
private:
template<typename JSGlobalScopePrototype, typename JSGlobalScope, typename GlobalScope>
void initScriptWithSubclass();
RefPtr<JSC::VM> m_vm;
WeakPtr<WorkerOrWorkletGlobalScope> m_globalScope;
JSC::Strong<JSDOMGlobalObject> m_globalScopeWrapper;
std::unique_ptr<WorkerConsoleClient> m_consoleClient;
mutable Lock m_scheduledTerminationLock;
bool m_isTerminatingExecution WTF_GUARDED_BY_LOCK(m_scheduledTerminationLock) { false };
};
} // namespace WebCore
|
