From 4f9533c7722fa07511a94d005227961f4a4dec23 Mon Sep 17 00:00:00 2001
From: Mark Wielaard <mark@gcc.gnu.org>
Date: Thu, 18 May 2006 17:29:21 +0000
Subject: Imported GNU Classpath 0.90

       Imported GNU Classpath 0.90
       * scripts/makemake.tcl: LocaleData.java moved to gnu/java/locale.

       * sources.am: Regenerated.
       * gcj/javaprims.h: Regenerated.
       * Makefile.in: Regenerated.
       * gcj/Makefile.in: Regenerated.
       * include/Makefile.in: Regenerated.
       * testsuite/Makefile.in: Regenerated.

       * gnu/java/lang/VMInstrumentationImpl.java: New override.
       * gnu/java/net/local/LocalSocketImpl.java: Likewise.
       * gnu/classpath/jdwp/VMMethod.java: Likewise.
       * gnu/classpath/jdwp/VMVirtualMachine.java: Update to latest
       interface.
       * java/lang/Thread.java: Add UncaughtExceptionHandler.
       * java/lang/reflect/Method.java: Implements GenericDeclaration and
       isSynthetic(),
       * java/lang/reflect/Field.java: Likewise.
       * java/lang/reflect/Constructor.java
       * java/lang/Class.java: Implements Type, GenericDeclaration,
       getSimpleName() and getEnclosing*() methods.
       * java/lang/Class.h: Add new public methods.
       * java/lang/Math.java: Add signum(), ulp() and log10().
       * java/lang/natMath.cc (log10): New function.
       * java/security/VMSecureRandom.java: New override.
       * java/util/logging/Logger.java: Updated to latest classpath
       version.
       * java/util/logging/LogManager.java: New override.

From-SVN: r113887
---
 .../classpath/vm/reference/java/lang/VMSystem.java | 71 +++++++++++++++++-----
 1 file changed, 55 insertions(+), 16 deletions(-)

(limited to 'libjava/classpath/vm/reference/java/lang/VMSystem.java')

diff --git a/libjava/classpath/vm/reference/java/lang/VMSystem.java b/libjava/classpath/vm/reference/java/lang/VMSystem.java
index 8a83cad92ff..f96986df373 100644
--- a/libjava/classpath/vm/reference/java/lang/VMSystem.java
+++ b/libjava/classpath/vm/reference/java/lang/VMSystem.java
@@ -37,6 +37,8 @@ exception statement from your version. */
 
 package java.lang;
 
+import java.util.List;
+
 import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
 import java.io.FileDescriptor;
@@ -50,6 +52,7 @@ import java.io.PrintStream;
  * VM must implement.
  *
  * @author John Keiser
+ * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
  */
 final class VMSystem
 {
@@ -134,41 +137,77 @@ final class VMSystem
    */
    public static native long currentTimeMillis();
 
+  /**
+   * <p>
+   * Returns the current value of a nanosecond-precise system timer.
+   * The value of the timer is an offset relative to some arbitrary fixed
+   * time, which may be in the future (making the value negative).  This
+   * method is useful for timing events where nanosecond precision is
+   * required.  This is achieved by calling this method before and after the
+   * event, and taking the difference betweent the two times:
+   * </p>
+   * <p>
+   * <code>long startTime = System.nanoTime();</code><br />
+   * <code>... <emph>event code</emph> ...</code><br />
+   * <code>long endTime = System.nanoTime();</code><br />
+   * <code>long duration = endTime - startTime;</code><br />
+   * </p>
+   * <p>
+   * Note that the value is only nanosecond-precise, and not accurate; there
+   * is no guarantee that the difference between two values is really a
+   * nanosecond.  Also, the value is prone to overflow if the offset
+   * exceeds 2^63.
+   * </p>
+   *
+   * @return the time of a system timer in nanoseconds.
+   * @since 1.5 
+   */
+   public static long nanoTime()
+   {
+     return currentTimeMillis() * 1000;
+   }
+
+  /**
+   * Returns a list of 'name=value' pairs representing the current environment
+   * variables.
+   *
+   * @return a list of 'name=value' pairs.
+   */
+  static native List environ();
+
   /**
    * Helper method which creates the standard input stream.
    * VM implementors may choose to construct these streams differently.
    * This method can also return null if the stream is created somewhere 
    * else in the VM startup sequence.
    */
-
-    static InputStream makeStandardInputStream()
-    {
-	return new BufferedInputStream(new FileInputStream(FileDescriptor.in));
-    }
-
+  static InputStream makeStandardInputStream()
+  {
+    return new BufferedInputStream(new FileInputStream(FileDescriptor.in));
+  }
+  
   /**
    * Helper method which creates the standard output stream.
    * VM implementors may choose to construct these streams differently.
    * This method can also return null if the stream is created somewhere 
    * else in the VM startup sequence.
    */
+  static PrintStream makeStandardOutputStream()
+  {
+    return new PrintStream(new BufferedOutputStream(new FileOutputStream(FileDescriptor.out)), true);
+  }
 
-    static PrintStream makeStandardOutputStream()
-    {
-	return new PrintStream(new BufferedOutputStream(new FileOutputStream(FileDescriptor.out)), true);
-    }
   /**
    * Helper method which creates the standard error stream.
    * VM implementors may choose to construct these streams differently.
    * This method can also return null if the stream is created somewhere 
    * else in the VM startup sequence.
    */
-
-    static PrintStream makeStandardErrorStream()
-    {
-	return new PrintStream(new BufferedOutputStream(new FileOutputStream(FileDescriptor.err)), true);
-    }
-
+  static PrintStream makeStandardErrorStream()
+  {
+    return new PrintStream(new BufferedOutputStream(new FileOutputStream(FileDescriptor.err)), true);
+  }
+  
   /**
    * Gets the value of an environment variable.
    * Always returning null is a valid (but not very useful) implementation.
-- 
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