author | ohair |
Tue, 10 Apr 2012 08:22:03 -0700 | |
changeset 12317 | 9670c1610c53 |
parent 5506 | 202f599c92aa |
permissions | -rw-r--r-- |
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/* |
12317
9670c1610c53
7074397: Build infrastructure changes (makefile re-write)
ohair
parents:
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diff
changeset
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* Copyright (c) 1999, 2012, 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 com.sun.tools.jdi; |
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import com.sun.jdi.*; |
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import com.sun.jdi.connect.*; |
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import com.sun.jdi.connect.spi.*; |
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import java.io.IOException; |
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import java.util.Map; |
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import java.util.ResourceBundle; |
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class SharedMemoryTransportService extends TransportService { |
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private ResourceBundle messages = null; |
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/** |
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* The listener returned by startListening |
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*/ |
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static class SharedMemoryListenKey extends ListenKey { |
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long id; |
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String name; |
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SharedMemoryListenKey(long id, String name) { |
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this.id = id; |
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this.name = name; |
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} |
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long id() { |
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return id; |
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} |
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void setId(long id) { |
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this.id = id; |
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} |
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public String address() { |
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return name; |
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} |
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public String toString() { |
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return address(); |
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} |
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} |
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SharedMemoryTransportService() { |
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System.loadLibrary("dt_shmem"); |
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initialize(); |
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} |
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public String name() { |
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return "SharedMemory"; |
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} |
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public String defaultAddress() { |
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return "javadebug"; |
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} |
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/** |
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* Return localized description of this transport service |
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*/ |
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public String description() { |
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synchronized (this) { |
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if (messages == null) { |
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messages = ResourceBundle.getBundle("com.sun.tools.jdi.resources.jdi"); |
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} |
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} |
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return messages.getString("memory_transportservice.description"); |
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} |
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public Capabilities capabilities() { |
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return new SharedMemoryTransportServiceCapabilities(); |
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} |
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private native void initialize(); |
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private native long startListening0(String address) throws IOException; |
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private native long attach0(String address, long attachTimeout) throws IOException; |
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private native void stopListening0(long id) throws IOException; |
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private native long accept0(long id, long acceptTimeout) throws IOException; |
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private native String name(long id) throws IOException; |
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public Connection attach(String address, long attachTimeout, long handshakeTimeout) throws IOException { |
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if (address == null) { |
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throw new NullPointerException("address is null"); |
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} |
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long id = attach0(address, attachTimeout); |
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SharedMemoryConnection conn = new SharedMemoryConnection(id); |
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conn.handshake(handshakeTimeout); |
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return conn; |
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} |
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public TransportService.ListenKey startListening(String address) throws IOException { |
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if (address == null || address.length() == 0) { |
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address = defaultAddress(); |
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} |
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long id = startListening0(address); |
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return new SharedMemoryListenKey(id, name(id)); |
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} |
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public ListenKey startListening() throws IOException { |
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return startListening(null); |
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} |
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public void stopListening(ListenKey listener) throws IOException { |
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if (!(listener instanceof SharedMemoryListenKey)) { |
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throw new IllegalArgumentException("Invalid listener"); |
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} |
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long id; |
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SharedMemoryListenKey key = (SharedMemoryListenKey)listener; |
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synchronized (key) { |
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id = key.id(); |
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if (id == 0) { |
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throw new IllegalArgumentException("Invalid listener"); |
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} |
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// invalidate the id |
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key.setId(0); |
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} |
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stopListening0(id); |
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} |
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public Connection accept(ListenKey listener, long acceptTimeout, long handshakeTimeout) throws IOException { |
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if (!(listener instanceof SharedMemoryListenKey)) { |
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throw new IllegalArgumentException("Invalid listener"); |
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} |
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long transportId; |
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SharedMemoryListenKey key = (SharedMemoryListenKey)listener; |
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synchronized (key) { |
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transportId = key.id(); |
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if (transportId == 0) { |
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throw new IllegalArgumentException("Invalid listener"); |
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} |
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} |
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// in theory another thread could call stopListening before |
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// accept0 is called. In that case accept0 will try to accept |
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// with an invalid "transport id" - this should result in an |
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// IOException. |
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long connectId = accept0(transportId, acceptTimeout); |
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SharedMemoryConnection conn = new SharedMemoryConnection(connectId); |
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conn.handshake(handshakeTimeout); |
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return conn; |
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} |
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} |
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class SharedMemoryTransportServiceCapabilities extends TransportService.Capabilities { |
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public boolean supportsMultipleConnections() { |
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return false; |
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} |
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public boolean supportsAttachTimeout() { |
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return true; |
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} |
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public boolean supportsAcceptTimeout() { |
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return true; |
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} |
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public boolean supportsHandshakeTimeout() { |
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return false; |
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} |
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} |