* src/lib/Makefile.am (VM_JAVA_FILES): Renamed vm/reference/ to gnu/.

[cacao.git] / src / lib / gnu / gnu / java / lang / management / VMRuntimeMXBeanImpl.java

diff --git a/src/lib/gnu/gnu/java/lang/management/VMRuntimeMXBeanImpl.java b/src/lib/gnu/gnu/java/lang/management/VMRuntimeMXBeanImpl.java
new file mode 100644 (file)
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+/* VMRuntimeMXBeanImpl.java - VM implementation of an runtime bean
+   Copyright (C) 2006 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 gnu.java.lang.management;
+
+import gnu.classpath.SystemProperties;
+
+/**
+ * Provides access to information about the virtual machine.
+ *
+ * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
+ * @since 1.5
+ */
+final class VMRuntimeMXBeanImpl
+{
+
+  /**
+   * Returns the command-line arguments supplied
+   * to the virtual machine, excluding those supplied
+   * to <code>main()</code>.
+   *
+   * @return the command-line arguments.
+   */
+  static native String[] getInputArguments();
+
+  /**
+   * Returns a developer-chosen name for the virtual
+   * machine, which may differ over different running
+   * instances of the same virtual machine binary.
+   * For example, this may include the particular
+   * process identifier used by this instance or
+   * the host name of the machine on which it is
+   * running.  The intention is that this name refers
+   * to the precise entity that the other data supplied
+   * by the bean refers to, rather than the VM in general.
+   *
+   * @return the custom name of the VM.
+   */
+  static String getName()
+  {
+    return SystemProperties.getProperty("java.vm.name") + " " +
+      SystemProperties.getProperty("java.vm.version");
+  }
+
+  /**
+   * The time in milliseconds at which the virtual
+   * machine was started.  This method is only executed
+   * once (for efficency), as the value is not expected
+   * to change.
+   *
+   * @return the VM start time.
+   */
+  static native long getStartTime();
+
+}