2006-08-14 Mark Wielaard <mark@klomp.org>

       Imported GNU Classpath 0.92
       * HACKING: Add more importing hints. Update automake version
       requirement.

       * configure.ac (gconf-peer): New enable AC argument.
       Add --disable-gconf-peer and --enable-default-preferences-peer
       to classpath configure when gconf is disabled.
       * scripts/makemake.tcl: Set gnu/java/util/prefs/gconf and
       gnu/java/awt/dnd/peer/gtk to bc. Classify
       gnu/java/security/Configuration.java as generated source file.

       * gnu/java/lang/management/VMGarbageCollectorMXBeanImpl.java,
       gnu/java/lang/management/VMMemoryPoolMXBeanImpl.java,
       gnu/java/lang/management/VMClassLoadingMXBeanImpl.java,
       gnu/java/lang/management/VMRuntimeMXBeanImpl.java,
       gnu/java/lang/management/VMMemoryManagerMXBeanImpl.java,
       gnu/java/lang/management/VMThreadMXBeanImpl.java,
       gnu/java/lang/management/VMMemoryMXBeanImpl.java,
       gnu/java/lang/management/VMCompilationMXBeanImpl.java: New VM stub
       classes.
       * java/lang/management/VMManagementFactory.java: Likewise.
       * java/net/VMURLConnection.java: Likewise.
       * gnu/java/nio/VMChannel.java: Likewise.

       * java/lang/Thread.java (getState): Add stub implementation.
       * java/lang/Class.java (isEnum): Likewise.
       * java/lang/Class.h (isEnum): Likewise.

       * gnu/awt/xlib/XToolkit.java (getClasspathTextLayoutPeer): Removed.

       * javax/naming/spi/NamingManager.java: New override for StackWalker
       functionality.

       * configure, sources.am, Makefile.in, gcj/Makefile.in,
       include/Makefile.in, testsuite/Makefile.in: Regenerated.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@116139 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 233 insertions, 0 deletions

diff --git a/libjava/gnu/java/lang/management/VMThreadMXBeanImpl.java b/libjava/gnu/java/lang/management/VMThreadMXBeanImpl.java
new file mode 100644
index 00000000000..3478372c6c5
--- /dev/null
+++ b/libjava/gnu/java/lang/management/VMThreadMXBeanImpl.java
@@ -0,0 +1,233 @@
+/* VMThreadMXBeanImpl.java - VM impl. of a thread 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 java.lang.management.ThreadInfo;
+
+/**
+ * Provides access to information about the threads 
+ * of the virtual machine.  An instance of this bean is
+ * obtained by calling
+ * {@link ManagementFactory#getThreadMXBean()}.
+ * See {@link java.lang.management.ThreadMXBean} for
+ * full documentation.
+ *
+ * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
+ * @since 1.5
+ */
+final class VMThreadMXBeanImpl
+{
+
+  /**
+   * Cache of how many threads were found.
+   */
+  private static int filled;
+
+  /**
+   * Returns the ids of cycles of deadlocked threads, occurring
+   * due to monitor ownership.
+   *
+   * @return the ids of the deadlocked threads.
+   */
+  static long[] findMonitorDeadlockedThreads()
+  {
+    return new long[0];
+  }
+
+  /* This is the same as in Thread.getAllStackTraces() */
+  static Thread[] getAllThreads()
+  {
+    ThreadGroup group = Thread.currentThread().getThreadGroup();
+    while (group.getParent() != null)
+      group = group.getParent();
+    int arraySize = group.activeCount();
+    Thread[] threadList = new Thread[arraySize];
+    filled = group.enumerate(threadList);
+    while (filled == arraySize)
+      {
+	arraySize *= 2;
+	threadList = new Thread[arraySize];
+	filled = group.enumerate(threadList);
+      }
+    return threadList;
+  }
+  
+  /**
+   * Returns the id of all live threads at the time of execution.
+   *
+   * @return the live thread ids.
+   */
+  static long[] getAllThreadIds()
+  {
+    Thread[] threadList = getAllThreads();
+    long[] ids = new long[filled];
+    for (int a = 0; a < filled; ++a)
+      ids[a] = threadList[a].getId();
+    return ids;
+  }
+
+  /**
+   * Returns the number of nanoseconds of CPU time
+   * the current thread has used in total.   This is
+   * only called if this feature is enabled and
+   * supported.
+   *
+   * @return the nanoseconds of CPU time used by
+   *         the current thread.
+   */
+  static long getCurrentThreadCpuTime()
+  {
+    return -1;
+  }
+
+  /**
+   * Returns the number of nanoseconds of user time
+   * the current thread has used in total.   This is
+   * only called if this feature is enabled and
+   * supported.
+   *
+   * @return the nanoseconds of user time used by
+   *         the current thread.
+   */
+  static long getCurrentThreadUserTime()
+  {
+    return -1;
+  }
+
+  /**
+   * Returns the number of live daemon threads.
+   *
+   * @return the number of live daemon threads.
+   */
+  static int getDaemonThreadCount()
+  {
+    Thread[] threadList = getAllThreads();
+    int daemonCount = 0;
+    for (int a = 0; a < filled; ++a)
+      {
+	if (threadList[a].isDaemon())
+	  ++daemonCount;
+      }
+    return daemonCount;
+  }
+
+  /**
+   * Returns the current peak number of live threads.
+   *
+   * @return the peak number of live threads.
+   */
+  static int getPeakThreadCount()
+  {
+    return -1;
+  }
+
+  /**
+   * Returns the number of live threads.
+   *
+   * @return the number of live threads.
+   */
+  static int getThreadCount()
+  {
+    getAllThreads();
+    return filled;
+  }
+
+  /**
+   * Returns the number of nanoseconds of CPU time
+   * the specified thread has used in total.   This is
+   * only called if this feature is enabled and
+   * supported.
+   *
+   * @param id the thread to obtain statistics on.
+   * @return the nanoseconds of CPU time used by
+   *         the thread.
+   */
+  static long getThreadCpuTime(long id)
+  {
+    return -1;
+  }
+
+  /**
+   * Returns the {@link java.lang.management.ThreadInfo}
+   * which corresponds to the specified id.
+   *
+   * @param id the id of the thread.
+   * @param maxDepth the depth of the stack trace.
+   * @return the corresponding <code>ThreadInfo</code>.
+   */
+  static ThreadInfo getThreadInfoForId(long id, int maxDepth)
+  {
+    return null;
+  }
+  
+  /**
+   * Returns the number of nanoseconds of user time
+   * the specified thread has used in total.   This is
+   * only called if this feature is enabled and
+   * supported.
+   *
+   * @param id the thread to obtain statistics on.
+   * @return the nanoseconds of user time used by
+   *         the thread.
+   */
+  static long getThreadUserTime(long id)
+  {
+    return -1;
+  }
+  
+  /**
+   * Returns the total number of threads that have
+   * been started over the lifetime of the virtual
+   * machine.
+   *
+   * @return the total number of threads started.
+   */
+  static long getTotalStartedThreadCount()
+  {
+    return -1;
+  }
+
+  /**
+   * Resets the peak thread count to the current
+   * number of live threads.
+   */
+  static void resetPeakThreadCount()
+  {
+  }
+
+}