1 /*
2 * Copyright (c) 2010, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
37 import javafx.beans.property.SimpleDoubleProperty;
38 import javafx.beans.property.SimpleObjectProperty;
39 import javafx.beans.property.SimpleStringProperty;
40 import javafx.beans.property.StringProperty;
41 import javafx.beans.value.ChangeListener;
42 import javafx.beans.value.ObservableValue;
43 import javafx.event.Event;
44 import javafx.event.EventDispatchChain;
45 import javafx.event.EventHandler;
46 import javafx.event.EventTarget;
47 import javafx.event.EventType;
48 import java.security.AccessController;
49 import java.security.AccessControlContext;
50 import java.security.PrivilegedAction;
51 import java.util.concurrent.BlockingQueue;
52 import java.util.concurrent.Executor;
53 import java.util.concurrent.LinkedBlockingQueue;
54 import java.util.concurrent.ThreadFactory;
55 import java.util.concurrent.ThreadPoolExecutor;
56 import java.util.concurrent.TimeUnit;
57 import sun.util.logging.PlatformLogger;
58 import static javafx.concurrent.WorkerStateEvent.WORKER_STATE_CANCELLED;
59 import static javafx.concurrent.WorkerStateEvent.WORKER_STATE_FAILED;
60 import static javafx.concurrent.WorkerStateEvent.WORKER_STATE_READY;
61 import static javafx.concurrent.WorkerStateEvent.WORKER_STATE_RUNNING;
62 import static javafx.concurrent.WorkerStateEvent.WORKER_STATE_SCHEDULED;
63 import static javafx.concurrent.WorkerStateEvent.WORKER_STATE_SUCCEEDED;
64
65 /**
66 * <p>
67 * A Service is a non-visual component encapsulating the information required
68 * to perform some work on one or more background threads. As part of the
69 * JavaFX UI library, the Service knows about the JavaFX Application thread
70 * and is designed to relieve the application developer from the burden
71 * of managing multithreaded code that interacts with the user interface. As
72 * such, all of the methods and state on the Service are intended to be
73 * invoked exclusively from the JavaFX Application thread. The only exception
74 * to this, is when initially configuring a Service, which may safely be done
75 * from any thread, and initially starting a Service, which may also safely
76 * be done from any thread. However, once the Service has been initialized and
77 * started, it may only thereafter be used from the FX thread.
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1 /*
2 * Copyright (c) 2010, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
37 import javafx.beans.property.SimpleDoubleProperty;
38 import javafx.beans.property.SimpleObjectProperty;
39 import javafx.beans.property.SimpleStringProperty;
40 import javafx.beans.property.StringProperty;
41 import javafx.beans.value.ChangeListener;
42 import javafx.beans.value.ObservableValue;
43 import javafx.event.Event;
44 import javafx.event.EventDispatchChain;
45 import javafx.event.EventHandler;
46 import javafx.event.EventTarget;
47 import javafx.event.EventType;
48 import java.security.AccessController;
49 import java.security.AccessControlContext;
50 import java.security.PrivilegedAction;
51 import java.util.concurrent.BlockingQueue;
52 import java.util.concurrent.Executor;
53 import java.util.concurrent.LinkedBlockingQueue;
54 import java.util.concurrent.ThreadFactory;
55 import java.util.concurrent.ThreadPoolExecutor;
56 import java.util.concurrent.TimeUnit;
57 import com.sun.javafx.logging.PlatformLogger;
58 import static javafx.concurrent.WorkerStateEvent.WORKER_STATE_CANCELLED;
59 import static javafx.concurrent.WorkerStateEvent.WORKER_STATE_FAILED;
60 import static javafx.concurrent.WorkerStateEvent.WORKER_STATE_READY;
61 import static javafx.concurrent.WorkerStateEvent.WORKER_STATE_RUNNING;
62 import static javafx.concurrent.WorkerStateEvent.WORKER_STATE_SCHEDULED;
63 import static javafx.concurrent.WorkerStateEvent.WORKER_STATE_SUCCEEDED;
64
65 /**
66 * <p>
67 * A Service is a non-visual component encapsulating the information required
68 * to perform some work on one or more background threads. As part of the
69 * JavaFX UI library, the Service knows about the JavaFX Application thread
70 * and is designed to relieve the application developer from the burden
71 * of managing multithreaded code that interacts with the user interface. As
72 * such, all of the methods and state on the Service are intended to be
73 * invoked exclusively from the JavaFX Application thread. The only exception
74 * to this, is when initially configuring a Service, which may safely be done
75 * from any thread, and initially starting a Service, which may also safely
76 * be done from any thread. However, once the Service has been initialized and
77 * started, it may only thereafter be used from the FX thread.
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