Mercurial > hg > truffle
diff agent/src/share/classes/sun/jvm/hotspot/RMIHelper.java @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/RMIHelper.java Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,131 @@ +/* + * Copyright 2004 Sun Microsystems, Inc. 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. + * + * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +package sun.jvm.hotspot; + +import java.io.*; +import java.net.*; +import java.rmi.*; +import java.rmi.registry.*; +import sun.jvm.hotspot.debugger.DebuggerException; + +public class RMIHelper { + private static final boolean startRegistry; + private static int port; + private static String serverNamePrefix; + + static { + String tmp = System.getProperty("sun.jvm.hotspot.rmi.startRegistry"); + if (tmp != null && tmp.equals("false")) { + startRegistry = false; + } else { + // by default, we attempt to start rmiregistry + startRegistry = true; + } + + port = Registry.REGISTRY_PORT; + tmp = System.getProperty("sun.jvm.hotspot.rmi.port"); + if (tmp != null) { + try { + port = Integer.parseInt(tmp); + } catch (NumberFormatException nfe) { + System.err.println("invalid port supplied, assuming default"); + } + } + + tmp = System.getProperty("sun.jvm.hotspot.rmi.serverNamePrefix"); + serverNamePrefix = (tmp != null)? serverNamePrefix : "SARemoteDebugger"; + } + + public static void rebind(String uniqueID, Remote object) throws DebuggerException { + String name = getName(uniqueID); + try { + Naming.rebind(name, object); + } catch (RemoteException re) { + if (startRegistry) { + // may be the user didn't start rmiregistry, try to start it + try { + LocateRegistry.createRegistry(port); + Naming.rebind(name, object); + } catch (Exception exp) { + throw new DebuggerException(exp); + } + } else { + throw new DebuggerException(re); + } + } catch (Exception exp) { + throw new DebuggerException(exp); + } + } + + public static void unbind(String uniqueID) throws DebuggerException { + String name = getName(uniqueID); + try { + Naming.unbind(name); + } catch (Exception exp) { + throw new DebuggerException(exp); + } + } + + public static Remote lookup(String debugServerID) throws DebuggerException { + // debugServerID follows the pattern [unique_id@]host[:port] + // we have to transform this as //host[:port]/<serverNamePrefix>['_'<unique_id>] + + int index = debugServerID.indexOf('@'); + StringBuffer nameBuf = new StringBuffer("//"); + String uniqueID = null; + if (index != -1) { + nameBuf.append(debugServerID.substring(index + 1)); + uniqueID = debugServerID.substring(0, index); + } else { + nameBuf.append(debugServerID); + } + + nameBuf.append('/'); + nameBuf.append(serverNamePrefix); + if (uniqueID != null) { + nameBuf.append('_'); + nameBuf.append(uniqueID); + } + + try { + return Naming.lookup(nameBuf.toString()); + } catch (Exception exp) { + throw new DebuggerException(exp); + } + } + + private static String getName(String uniqueID) { + String name = null; + if (uniqueID != null) { + name = serverNamePrefix + "_" + uniqueID; + } else { + name = serverNamePrefix; + } + if (port != Registry.REGISTRY_PORT) { + name = "//localhost:" + port + "/" + name; + } + return name; + } +}