8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse

src/java.base/share/classes/sun/net/ProgressMonitor.java

@@ -0,0 +1,257 @@
+/*
+ * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.net;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.net.URL;
+
+/**
+ * ProgressMonitor is a class for monitoring progress in network input stream.
+ *
+ * @author Stanley Man-Kit Ho
+ */
+public class ProgressMonitor
+{
+    /**
+     * Return default ProgressMonitor.
+     */
+    public static synchronized ProgressMonitor getDefault() {
+        return pm;
+    }
+
+    /**
+     * Change default ProgressMonitor implementation.
+     */
+    public static synchronized void setDefault(ProgressMonitor m)   {
+        if (m != null)
+            pm = m;
+    }
+
+    /**
+     * Change progress metering policy.
+     */
+    public static synchronized void setMeteringPolicy(ProgressMeteringPolicy policy)    {
+        if (policy != null)
+            meteringPolicy = policy;
+    }
+
+
+    /**
+     * Return a snapshot of the ProgressSource list
+     */
+    public ArrayList<ProgressSource> getProgressSources()    {
+        ArrayList<ProgressSource> snapshot = new ArrayList<>();
+
+        try {
+            synchronized(progressSourceList)    {
+                for (Iterator<ProgressSource> iter = progressSourceList.iterator(); iter.hasNext();)    {
+                    ProgressSource pi = iter.next();
+
+                    // Clone ProgressSource and add to snapshot
+                    snapshot.add((ProgressSource)pi.clone());
+                }
+            }
+        }
+        catch(CloneNotSupportedException e) {
+            e.printStackTrace();
+        }
+
+        return snapshot;
+    }
+
+    /**
+     * Return update notification threshold
+     */
+    public synchronized int getProgressUpdateThreshold()    {
+        return meteringPolicy.getProgressUpdateThreshold();
+    }
+
+    /**
+     * Return true if metering should be turned on
+     * for a particular URL input stream.
+     */
+    public boolean shouldMeterInput(URL url, String method) {
+        return meteringPolicy.shouldMeterInput(url, method);
+    }
+
+    /**
+     * Register progress source when progress is began.
+     */
+    public void registerSource(ProgressSource pi) {
+
+        synchronized(progressSourceList)    {
+            if (progressSourceList.contains(pi))
+                return;
+
+            progressSourceList.add(pi);
+        }
+
+        // Notify only if there is at least one listener
+        if (progressListenerList.size() > 0)
+        {
+            // Notify progress listener if there is progress change
+            ArrayList<ProgressListener> listeners = new ArrayList<>();
+
+            // Copy progress listeners to another list to avoid holding locks
+            synchronized(progressListenerList) {
+                for (Iterator<ProgressListener> iter = progressListenerList.iterator(); iter.hasNext();) {
+                    listeners.add(iter.next());
+                }
+            }
+
+            // Fire event on each progress listener
+            for (Iterator<ProgressListener> iter = listeners.iterator(); iter.hasNext();) {
+                ProgressListener pl = iter.next();
+                ProgressEvent pe = new ProgressEvent(pi, pi.getURL(), pi.getMethod(), pi.getContentType(), pi.getState(), pi.getProgress(), pi.getExpected());
+                pl.progressStart(pe);
+            }
+        }
+    }
+
+    /**
+     * Unregister progress source when progress is finished.
+     */
+    public void unregisterSource(ProgressSource pi) {
+
+        synchronized(progressSourceList) {
+            // Return if ProgressEvent does not exist
+            if (progressSourceList.contains(pi) == false)
+                return;
+
+            // Close entry and remove from map
+            pi.close();
+            progressSourceList.remove(pi);
+        }
+
+        // Notify only if there is at least one listener
+        if (progressListenerList.size() > 0)
+        {
+            // Notify progress listener if there is progress change
+            ArrayList<ProgressListener> listeners = new ArrayList<>();
+
+            // Copy progress listeners to another list to avoid holding locks
+            synchronized(progressListenerList) {
+                for (Iterator<ProgressListener> iter = progressListenerList.iterator(); iter.hasNext();) {
+                    listeners.add(iter.next());
+                }
+            }
+
+            // Fire event on each progress listener
+            for (Iterator<ProgressListener> iter = listeners.iterator(); iter.hasNext();) {
+                ProgressListener pl = iter.next();
+                ProgressEvent pe = new ProgressEvent(pi, pi.getURL(), pi.getMethod(), pi.getContentType(), pi.getState(), pi.getProgress(), pi.getExpected());
+                pl.progressFinish(pe);
+            }
+        }
+    }
+
+    /**
+     * Progress source is updated.
+     */
+    public void updateProgress(ProgressSource pi)   {
+
+        synchronized (progressSourceList)   {
+            if (progressSourceList.contains(pi) == false)
+                return;
+        }
+
+        // Notify only if there is at least one listener
+        if (progressListenerList.size() > 0)
+        {
+            // Notify progress listener if there is progress change
+            ArrayList<ProgressListener> listeners = new ArrayList<>();
+
+            // Copy progress listeners to another list to avoid holding locks
+            synchronized(progressListenerList)  {
+                for (Iterator<ProgressListener> iter = progressListenerList.iterator(); iter.hasNext();) {
+                    listeners.add(iter.next());
+                }
+            }
+
+            // Fire event on each progress listener
+            for (Iterator<ProgressListener> iter = listeners.iterator(); iter.hasNext();) {
+                ProgressListener pl = iter.next();
+                ProgressEvent pe = new ProgressEvent(pi, pi.getURL(), pi.getMethod(), pi.getContentType(), pi.getState(), pi.getProgress(), pi.getExpected());
+                pl.progressUpdate(pe);
+            }
+        }
+    }
+
+    /**
+     * Add progress listener in progress monitor.
+     */
+    public void addProgressListener(ProgressListener l) {
+        synchronized(progressListenerList) {
+            progressListenerList.add(l);
+        }
+    }
+
+    /**
+     * Remove progress listener from progress monitor.
+     */
+    public void removeProgressListener(ProgressListener l) {
+        synchronized(progressListenerList) {
+            progressListenerList.remove(l);
+        }
+    }
+
+    // Metering policy
+    private static ProgressMeteringPolicy meteringPolicy = new DefaultProgressMeteringPolicy();
+
+    // Default implementation
+    private static ProgressMonitor pm = new ProgressMonitor();
+
+    // ArrayList for outstanding progress sources
+    private ArrayList<ProgressSource> progressSourceList = new ArrayList<ProgressSource>();
+
+    // ArrayList for progress listeners
+    private ArrayList<ProgressListener> progressListenerList = new ArrayList<ProgressListener>();
+}
+
+
+/**
+ * Default progress metering policy.
+ */
+class DefaultProgressMeteringPolicy implements ProgressMeteringPolicy  {
+    /**
+     * Return true if metering should be turned on for a particular network input stream.
+     */
+    public boolean shouldMeterInput(URL url, String method)
+    {
+        // By default, no URL input stream is metered for
+        // performance reason.
+        return false;
+    }
+
+    /**
+     * Return update notification threshold.
+     */
+    public int getProgressUpdateThreshold() {
+        // 8K - same as default I/O buffer size
+        return 8192;
+    }
+}