8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse

src/java.base/share/classes/sun/nio/ch/MembershipKeyImpl.java

@@ -0,0 +1,219 @@
+/*
+ * Copyright (c) 2008, 2009, 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.nio.ch;
+
+import java.nio.channels.*;
+import java.net.InetAddress;
+import java.net.NetworkInterface;
+import java.io.IOException;
+import java.util.HashSet;
+
+/**
+ * MembershipKey implementation.
+ */
+
+class MembershipKeyImpl
+    extends MembershipKey
+{
+    private final MulticastChannel ch;
+    private final InetAddress group;
+    private final NetworkInterface interf;
+    private final InetAddress source;
+
+    private volatile boolean invalid;
+
+    // lock used when creating or accessing blockedSet
+    private Object stateLock = new Object();
+
+    // set of source addresses that are blocked
+    private HashSet<InetAddress> blockedSet;
+
+    private MembershipKeyImpl(MulticastChannel ch,
+                              InetAddress group,
+                              NetworkInterface interf,
+                              InetAddress source)
+    {
+        this.ch = ch;
+        this.group = group;
+        this.interf = interf;
+        this.source = source;
+    }
+
+    /**
+     * MembershipKey will additional context for IPv4 membership
+     */
+    static class Type4 extends MembershipKeyImpl {
+        private final int groupAddress;
+        private final int interfAddress;
+        private final int sourceAddress;
+
+        Type4(MulticastChannel ch,
+              InetAddress group,
+              NetworkInterface interf,
+              InetAddress source,
+              int groupAddress,
+              int interfAddress,
+              int sourceAddress)
+        {
+            super(ch, group, interf, source);
+            this.groupAddress = groupAddress;
+            this.interfAddress = interfAddress;
+            this.sourceAddress = sourceAddress;
+        }
+
+        int groupAddress() {
+            return groupAddress;
+        }
+
+        int interfaceAddress() {
+            return interfAddress;
+        }
+
+        int source() {
+            return sourceAddress;
+        }
+    }
+
+    /**
+     * MembershipKey will additional context for IPv6 membership
+     */
+    static class Type6 extends MembershipKeyImpl {
+        private final byte[] groupAddress;
+        private final int index;
+        private final byte[] sourceAddress;
+
+        Type6(MulticastChannel ch,
+              InetAddress group,
+              NetworkInterface interf,
+              InetAddress source,
+              byte[] groupAddress,
+              int index,
+              byte[] sourceAddress)
+        {
+            super(ch, group, interf, source);
+            this.groupAddress = groupAddress;
+            this.index = index;
+            this.sourceAddress = sourceAddress;
+        }
+
+        byte[] groupAddress() {
+            return groupAddress;
+        }
+
+        int index() {
+            return index;
+        }
+
+        byte[] source() {
+            return sourceAddress;
+        }
+    }
+
+    public boolean isValid() {
+        return !invalid;
+    }
+
+    // package-private
+    void invalidate() {
+        invalid = true;
+    }
+
+    public void drop() {
+        // delegate to channel
+        ((DatagramChannelImpl)ch).drop(this);
+    }
+
+    @Override
+    public MulticastChannel channel() {
+        return ch;
+    }
+
+    @Override
+    public InetAddress group() {
+        return group;
+    }
+
+    @Override
+    public NetworkInterface networkInterface() {
+        return interf;
+    }
+
+    @Override
+    public InetAddress sourceAddress() {
+        return source;
+    }
+
+    @Override
+    public MembershipKey block(InetAddress toBlock)
+        throws IOException
+    {
+        if (source != null)
+            throw new IllegalStateException("key is source-specific");
+
+        synchronized (stateLock) {
+            if ((blockedSet != null) && blockedSet.contains(toBlock)) {
+                // already blocked, nothing to do
+                return this;
+            }
+
+            ((DatagramChannelImpl)ch).block(this, toBlock);
+
+            // created blocked set if required and add source address
+            if (blockedSet == null)
+                blockedSet = new HashSet<>();
+            blockedSet.add(toBlock);
+        }
+        return this;
+    }
+
+    @Override
+    public MembershipKey unblock(InetAddress toUnblock) {
+        synchronized (stateLock) {
+            if ((blockedSet == null) || !blockedSet.contains(toUnblock))
+                throw new IllegalStateException("not blocked");
+
+            ((DatagramChannelImpl)ch).unblock(this, toUnblock);
+
+            blockedSet.remove(toUnblock);
+        }
+        return this;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder(64);
+        sb.append('<');
+        sb.append(group.getHostAddress());
+        sb.append(',');
+        sb.append(interf.getName());
+        if (source != null) {
+            sb.append(',');
+            sb.append(source.getHostAddress());
+        }
+        sb.append('>');
+        return sb.toString();
+    }
+}