VMClassLoader.java (getVMClassLoader): New method.

	* gnu/gcj/runtime/VMClassLoader.java (getVMClassLoader): New
	method.
	(redirect): New static field.
	* java/lang/ClassLoader.java (getSystemClassLoader): Now
	native
	(getVMClassLoader0): Removed.
	* java/lang/natClassLoader.cc (getVMClassLoader0): Removed.
	(redirect): Removed.
	(getSystemClassLoader): Implemented.

From-SVN: r30075

libjava/ChangeLog

+1999-10-18  Tom Tromey  <tromey@cygnus.com>
+
+	* gnu/gcj/runtime/VMClassLoader.java (getVMClassLoader): New
+	method.
+	(redirect): New static field.
+	* java/lang/ClassLoader.java (getSystemClassLoader): Now
+	native
+	(getVMClassLoader0): Removed.
+	* java/lang/natClassLoader.cc (getVMClassLoader0): Removed.
+	(redirect): Removed.
+	(getSystemClassLoader): Implemented.
+
 1999-10-16  Anthony Green  <green@cygnus.com>
 
 	* java/lang/ClassLoader.java (getSystemResource): Use

libjava/gnu/gcj/runtime/VMClassLoader.java

@@ -59,4 +59,15 @@ final class VMClassLoader extends java.net.URLClassLoader
    */
   protected final native Class findSystemClass(String name) 
     throws java.lang.ClassNotFoundException, java.lang.LinkageError;
+
+  // Return the sole VMClassLoader.
+  private static synchronized VMClassLoader getVMClassLoader ()
+  {
+    if (redirect == null)
+      redirect = new VMClassLoader ();
+    return redirect;
+  }
+
+  // The only VMClassLoader that can exist.
+  private static VMClassLoader redirect;
 }

libjava/java/lang/ClassLoader.java

@@ -34,13 +34,7 @@ public abstract class ClassLoader {
     return parent;
   }
     
-  private static native ClassLoader getVMClassLoader0 ();
-
-  static public ClassLoader getSystemClassLoader () {
-    if (system == null)
-      system = getVMClassLoader0 ();
-    return system;
-  }
+  public static native ClassLoader getSystemClassLoader ();
 
   /**
    * Creates a <code>ClassLoader</code> with no parent.

libjava/java/lang/natClassLoader.cc

@@ -48,14 +48,13 @@ extern java::lang::Class ClassLoaderClass;
 
 /////////// java.lang.ClassLoader native methods ////////////
 
-static gnu::gcj::runtime::VMClassLoader *redirect = 0;
-
-java::lang::ClassLoader*
-java::lang::ClassLoader::getVMClassLoader0 ()
+java::lang::ClassLoader *
+java::lang::ClassLoader::getSystemClassLoader (void)
 {
-  if (redirect == 0)
-    redirect = new gnu::gcj::runtime::VMClassLoader;
-  return redirect;
+  JvSynchronize sync (&ClassLoaderClass);
+  if (! system)
+    system = gnu::gcj::runtime::VMClassLoader::getVMClassLoader ();
+  return system;
 }
 
 void