/* * Copyright (C) 2019 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. AND ITS 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 APPLE INC. OR ITS 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 #if PLATFORM(IOS_FAMILY) #include <wtf/Lock.h> #include <wtf/RetainPtr.h> #include <wtf/ThreadSafeRefCounted.h> OBJC_CLASS WKProcessTaskStateObserverDelegate; OBJC_CLASS BKSProcess; namespace WebKit { class ProcessTaskStateObserver : public ThreadSafeRefCounted<ProcessTaskStateObserver> { public: class Client; static Ref<ProcessTaskStateObserver> create(Client&); ~ProcessTaskStateObserver(); enum TaskState { None, Running, Suspended, }; class Client { public: virtual ~Client() = default; virtual void processTaskStateDidChange(TaskState) = 0; }; void invalidate(); TaskState taskState() const { return m_taskState; } private: explicit ProcessTaskStateObserver(Client&); void setTaskState(TaskState); Client* m_client; Lock m_clientLock; TaskState m_taskState { None }; RetainPtr<BKSProcess> m_process; RetainPtr<WKProcessTaskStateObserverDelegate> m_delegate; }; } #endif // PLATFORM(IOS_FAMILY)