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/*
* Copyright (C) 2008, 2010, 2016 Apple 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 "AbstractWorker.h"
#include "ActiveDOMObject.h"
#include "ContentSecurityPolicyResponseHeaders.h"
#include "EventTarget.h"
#include "FetchRequestCredentials.h"
#include "MessagePort.h"
#include "WorkerOptions.h"
#include "WorkerScriptLoaderClient.h"
#include "WorkerType.h"
#include <JavaScriptCore/RuntimeFlags.h>
#include <wtf/Deque.h>
#include <wtf/MonotonicTime.h>
#include <wtf/text/AtomStringHash.h>
namespace JSC {
class CallFrame;
class JSObject;
class JSValue;
}
namespace WebCore {
class RTCRtpScriptTransform;
class RTCRtpScriptTransformer;
class ScriptExecutionContext;
class TrustedScriptURL;
class WorkerGlobalScopeProxy;
class WorkerScriptLoader;
struct StructuredSerializeOptions;
struct WorkerOptions;
class Worker final : public AbstractWorker, public ActiveDOMObject, private WorkerScriptLoaderClient {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(Worker);
public:
void ref() const final { RefCounted::ref(); }
void deref() const final { RefCounted::deref(); }
USING_CAN_MAKE_WEAKPTR(AbstractWorker);
static ExceptionOr<Ref<Worker>> create(ScriptExecutionContext&, JSC::RuntimeFlags, std::variant<RefPtr<TrustedScriptURL>, String>&&, WorkerOptions&&);
virtual ~Worker();
ExceptionOr<void> postMessage(JSC::JSGlobalObject&, JSC::JSValue message, StructuredSerializeOptions&&);
void terminate();
bool wasTerminated() const { return m_wasTerminated; }
String identifier() const { return m_identifier; }
const String& name() const { return m_options.name; }
ScriptExecutionContext* scriptExecutionContext() const final { return ActiveDOMObject::scriptExecutionContext(); }
void dispatchEvent(Event&) final;
void reportError(const String&);
#if ENABLE(WEB_RTC)
void createRTCRtpScriptTransformer(RTCRtpScriptTransform&, MessageWithMessagePorts&&);
#endif
WorkerType type() const { return m_options.type; }
void postTaskToWorkerGlobalScope(Function<void(ScriptExecutionContext&)>&&);
static void forEachWorker(NOESCAPE const Function<Function<void(ScriptExecutionContext&)>()>&);
private:
Worker(ScriptExecutionContext&, JSC::RuntimeFlags, WorkerOptions&&);
enum EventTargetInterfaceType eventTargetInterface() const final { return EventTargetInterfaceType::Worker; }
void didReceiveResponse(ScriptExecutionContextIdentifier, std::optional<ResourceLoaderIdentifier>, const ResourceResponse&) final;
void notifyFinished(std::optional<ScriptExecutionContextIdentifier>) final;
// ActiveDOMObject.
void stop() final;
void suspend(ReasonForSuspension) final;
void resume() final;
bool virtualHasPendingActivity() const final;
static void networkStateChanged(bool isOnLine);
RefPtr<WorkerScriptLoader> m_scriptLoader;
const WorkerOptions m_options;
String m_identifier;
WorkerGlobalScopeProxy& m_contextProxy; // The proxy outlives the worker to perform thread shutdown.
std::optional<ContentSecurityPolicyResponseHeaders> m_contentSecurityPolicyResponseHeaders;
MonotonicTime m_workerCreationTime;
bool m_shouldBypassMainWorldContentSecurityPolicy { false };
bool m_isSuspendedForBackForwardCache { false };
JSC::RuntimeFlags m_runtimeFlags;
Deque<RefPtr<Event>> m_pendingEvents;
bool m_wasTerminated { false };
bool m_didStartWorkerGlobalScope { false };
const ScriptExecutionContextIdentifier m_clientIdentifier;
};
} // namespace WebCore
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