1 files changed, 105 insertions, 0 deletions
diff --git a/libjava/classpath/vm/reference/java/lang/VMObject.java b/libjava/classpath/vm/reference/java/lang/VMObject.java
new file mode 100644
index 000000000..279f250c0
--- /dev/null
+++ b/libjava/classpath/vm/reference/java/lang/VMObject.java
@@ -0,0 +1,105 @@
+/* VMObject.java -- Reference implementation for VM hooks used by Object
+   Copyright (C) 1998, 2002, 2005  Free Software Foundation
+
+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 java.lang;
+
+/**
+ * Object is the ultimate superclass of every class (excepting interfaces).
+ * As such, it needs help from the VM.
+ *
+ * @author John Keiser
+ * @author Eric Blake (ebb9@email.byu.edu)
+ */
+final class VMObject
+{
+  /**
+   * Returns the runtime {@link Class} of a given Object.
+   *
+   * @param obj the object to return the class for.
+   *
+   * @return the class of the Object.
+   */
+  static native Class getClass(Object obj);
+
+  /**
+   * The VM is expected to make a field-for-field shallow copy of the
+   * argument. Thus, the copy has the same runtime type as the argument.
+   * Note, however, that the cloned object must still be finalizable, even
+   * if the original has already had finalize() invoked on it.
+   *
+   * @param c the Cloneable to clone
+   * @return the clone
+   */
+  static native Object clone(Cloneable c);
+
+  /**
+   * Wakes up one of the threads that is waiting on this Object's monitor.
+   * Only the owner of a lock on the Object may call this method. The Thread
+   * to wake up is chosen arbitrarily.
+   *
+   * @param o the object doing the notify
+   * @throw IllegalMonitorStateException if this Thread does not own the
+   *        lock on the Object
+   */
+  static native void notify(Object o) throws IllegalMonitorStateException;
+
+  /**
+   * Wakes up all of the threads waiting on this Object's monitor.  Only
+   * the owner of the lock on this Object may call this method.
+   *
+   * @param o the object doing the notifyAll
+   * @throws IllegalMonitorStateException if this Thread does not own the
+   *         lock on the Object
+   */
+  static native void notifyAll(Object o) throws IllegalMonitorStateException;
+
+  /**
+   * Waits a specified amount of time for notify() or notifyAll() to be
+   * called on this Object.  The VM does not have to pay attention to the
+   * ns argument, if it does not have that much granularity.
+   *
+   * @param o the object to suspend on
+   * @param ms milliseconds to wait (1,000 milliseconds = 1 second)
+   * @param ns nanoseconds to wait beyond ms (1,000,000 nanoseconds
+   *        == 1 millisecond)
+   * @throws IllegalMonitorStateException if this Thread does not own the
+   *         lock on the Object
+   * @throws InterruptedException if some other Thread interrupts this Thread
+   */
+  static native void wait(Object o, long ms, int ns)
+    throws IllegalMonitorStateException, InterruptedException;
+}