author | redestad |
Wed, 17 Jul 2019 12:35:46 +0200 | |
changeset 55693 | 9a97b1393e72 |
parent 52427 | 3c6aa484536c |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.net.sdp; |
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import java.io.IOException; |
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import java.io.FileDescriptor; |
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import jdk.internal.access.SharedSecrets; |
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import jdk.internal.access.JavaIOFileDescriptorAccess; |
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import sun.security.action.GetPropertyAction; |
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/** |
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* This class defines methods for creating SDP sockets or "converting" existing |
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* file descriptors, referencing (unbound) TCP sockets, to SDP. |
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*/ |
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public final class SdpSupport { |
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private static final String os = GetPropertyAction.privilegedGetProperty("os.name"); |
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private static final boolean isSupported = (os.equals("SunOS") || (os.equals("Linux"))); |
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private static final JavaIOFileDescriptorAccess fdAccess = |
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SharedSecrets.getJavaIOFileDescriptorAccess(); |
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private SdpSupport() { } |
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/** |
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* Creates a SDP socket, returning file descriptor referencing the socket. |
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*/ |
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public static FileDescriptor createSocket() throws IOException { |
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if (!isSupported) |
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throw new UnsupportedOperationException("SDP not supported on this platform"); |
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int fdVal = create0(); |
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FileDescriptor fd = new FileDescriptor(); |
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fdAccess.set(fd, fdVal); |
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return fd; |
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} |
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/** |
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* Converts an existing file descriptor, that references an unbound TCP socket, |
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* to SDP. |
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*/ |
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public static void convertSocket(FileDescriptor fd) throws IOException { |
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if (!isSupported) |
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throw new UnsupportedOperationException("SDP not supported on this platform"); |
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int fdVal = fdAccess.get(fd); |
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convert0(fdVal); |
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} |
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private static native int create0() throws IOException; |
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private static native void convert0(int fd) throws IOException; |
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static { |
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jdk.internal.loader.BootLoader.loadLibrary("net"); |
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} |
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} |