jdk/src/solaris/classes/sun/nio/ch/NativeThread.java
author alanb
Thu, 05 Jun 2008 14:50:28 +0100
changeset 693 6b497b9cb292
parent 2 90ce3da70b43
child 715 f16baef3a20e
permissions -rw-r--r--
6596323: (fc) ClosedByInterruptException not thrown by the interrupt method (lnx) Reviewed-by: sherman
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/*
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 * Copyright 2002 Sun Microsystems, Inc.  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.  Sun designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 */
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package sun.nio.ch;
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// Signalling operations on native threads
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//
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// On some operating systems (e.g., Linux), closing a channel while another
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// thread is blocked in an I/O operation upon that channel does not cause that
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// thread to be released.  This class provides access to the native threads
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// upon which Java threads are built, and defines a simple signal mechanism
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// that can be used to release a native thread from a blocking I/O operation.
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// On systems that do not require this type of signalling, the current() method
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// always returns -1 and the signal(long) method has no effect.
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class NativeThread {
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    // Returns an opaque token representing the native thread underlying the
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    // invoking Java thread.  On systems that do not require signalling, this
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    // method always returns -1.
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    //
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    static native long current();
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    // Signals the given native thread so as to release it from a blocking I/O
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    // operation.  On systems that do not require signalling, this method has
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    // no effect.
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    //
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    static native void signal(long nt);
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    static native void init();
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    static {
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        Util.load();
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        init();
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    }
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}