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+/* SingleStepEvent.java -- an event specifying that a single step has
+ compleated
+ Copyright (C) 2006 Free Software Foundation, Inc.
+
+ This file is part of GNU Classpath.
+
+ GNU Classpath is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ GNU Classpath 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 for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNU Classpath; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301 USA.
+
+ Linking this library statically or dynamically with other modules is
+ making a combined work based on this library. Thus, the terms and
+ conditions of the GNU General Public License cover the whole
+ combination.
+
+ As a special exception, the copyright holders of this library give you
+ permission to link this library with independent modules to produce an
+ executable, regardless of the license terms of these independent
+ modules, and to copy and distribute the resulting executable under
+ terms of your choice, provided that you also meet, for each linked
+ independent module, the terms and conditions of the license of that
+ module. An independent module is a module which is not derived from
+ or based on this library. If you modify this library, you may extend
+ this exception to your version of the library, but you are not
+ obligated to do so. If you do not wish to do so, delete this
+ exception statement from your version. */
+
+
+package gnu.classpath.jdwp.event;
+
+import gnu.classpath.jdwp.JdwpConstants;
+import gnu.classpath.jdwp.VMIdManager;
+import gnu.classpath.jdwp.id.ThreadId;
+import gnu.classpath.jdwp.util.Location;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+
+/**
+ * Notification from the VM that a single step has compleated including the
+ * thread and location stepped to
+ *
+ * @author Kyle Galloway (kgallowa@redhat.com)
+ */
+public class SingleStepEvent
+ extends Event
+{
+ // the thread where the event occurred
+ private Thread _thread;
+
+ // the location where the event occurred
+ private Location _location;
+
+ //object instance
+ private Object _instance;
+
+ /**
+ * Constructs a new <code>SingleStepEvent</code>
+ *
+ * @param thread the thread where the exception occurred
+ * @param location the location single stepped to
+ * @param instance the instance in which the single step occurred
+ */
+ public SingleStepEvent(Thread thread, Location location, Object instance)
+ {
+ super(JdwpConstants.EventKind.SINGLE_STEP);
+ _thread = thread;
+ _location = location;
+ _instance = instance;
+ }
+
+ /**
+ * Returns a specific filtering parameter for this event. Valid types are
+ * thread and location
+ *
+ * @param type the type of parameter desired
+ * @returns the desired parameter or null
+ */
+ public Object getParameter(int type)
+ {
+ if (type == EVENT_THREAD)
+ return _thread;
+ else if (type == EVENT_LOCATION)
+ return _location;
+ else if (type == EVENT_INSTANCE)
+ return _instance;
+ else if (type == EVENT_CLASS)
+ return _instance.getClass();
+
+ return null;
+ }
+
+ /**
+ * Writes the event to the given stream
+ *
+ * @param outStream the output stream to write the event to
+ * @throws IOException
+ */
+ protected void _writeData(DataOutputStream outStream)
+ throws IOException
+ {
+ VMIdManager idm = VMIdManager.getDefault();
+ ThreadId tid = (ThreadId) idm.getObjectId(_thread);
+
+ tid.write(outStream);
+ _location.write(outStream);
+ }
+
+}