FirstThread.java, [...]: Removed.

2004-07-04  Michael Koch  <konqueror@gmx.de>

	* gnu/gcj/runtime/FirstThread.java,
	gnu/gcj/runtime/natFirstThread.cc: Removed.
	* gnu/java/lang/MainThread.java,
	gnu/java/lang/natMainThread.cc: New files.
	* prims.cc (_Jv_RunMain): Use MainThread instead of FirstThread.
	* Makefile.am: Added new files and removed deleted ones.
	* Makefile.in: Regenerated.

From-SVN: r84085

2 files changed, 176 insertions, 0 deletions

diff --git a/libjava/gnu/java/lang/MainThread.java b/libjava/gnu/java/lang/MainThread.java
new file mode 100644
index 0000000..61751b2
--- /dev/null
+++ b/libjava/gnu/java/lang/MainThread.java
@@ -0,0 +1,128 @@
+/* gnu.java.lang.MainThread
+   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004
+   Free Software Foundation, Inc.
+
+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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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;
+
+import java.util.jar.*;
+
+/**
+ * MainThread is a Thread which uses the main() method of some class.
+ *
+ * @author John Keiser
+ * @author Tom Tromey (tromey@redhat.com)
+ */
+final class MainThread extends Thread
+{
+  // If the user links statically then we need to ensure that these
+  // classes are linked in.  Otherwise bootstrapping fails.  These
+  // classes are only referred to via Class.forName(), so we add an
+  // explicit mention of them here.
+  static final Class Kcert     = java.security.cert.Certificate.class;
+  static final Class Kfile     = gnu.java.net.protocol.file.Handler.class;
+  static final Class Khttp     = gnu.java.net.protocol.http.Handler.class;
+  static final Class Kjar      = gnu.java.net.protocol.jar.Handler.class;
+  static final Class Klocale   = gnu.java.locale.LocaleInformation.class;
+  static final Class Kcalendar = gnu.java.locale.Calendar.class;
+
+  // Private data.
+  private Class klass;
+  private String klass_name;
+  private Object args;
+  private boolean is_jar;
+
+  public MainThread(Class k, String[] args)
+  {
+    super(null, null, "main");
+    klass = k;
+    this.args = args;
+  }
+
+  public MainThread(String classname, String[] args, boolean is_jar)
+  {
+    super (null, null, "main");
+    klass_name = classname;
+    this.args = args;
+    this.is_jar = is_jar;
+  }
+
+  public void run()
+  {
+    if (is_jar)
+      klass_name = getMain(klass_name);
+
+    if (klass == null)
+      {
+        try
+	  {
+	    klass = Class.forName(klass_name);
+	  }
+	catch (ClassNotFoundException x)
+	  {
+	    throw new NoClassDefFoundError(klass_name);
+	  }
+      }
+
+    call_main();
+  }
+
+  private String getMain(String name)
+  {
+    String mainName = null;
+    try
+      {
+	JarFile j = new JarFile(name);
+	Attributes a = j.getManifest().getMainAttributes();
+	mainName = a.getValue(Attributes.Name.MAIN_CLASS);
+      }
+    catch (Exception e)
+      {
+	// Ignore.
+      }
+
+    if (mainName == null)
+      {
+	System.err.println("Failed to load Main-Class manifest attribute from "
+			   + name);
+	System.exit(1);
+      }
+    return mainName;
+  }
+
+  private native void call_main();
+}
diff --git a/libjava/gnu/java/lang/natMainThread.cc b/libjava/gnu/java/lang/natMainThread.cc
new file mode 100644
index 0000000..7e8e422
--- /dev/null
+++ b/libjava/gnu/java/lang/natMainThread.cc
@@ -0,0 +1,48 @@
+// natMainThread.cc - Implementation of MainThread native methods.
+
+/* Copyright (C) 1998, 1999, 2000, 2001, 2003  Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <gcj/cni.h>
+#include <jvm.h>
+
+#include <gnu/java/lang/MainThread.h>
+
+typedef void main_func (jobject);
+
+void
+gnu::java::lang::MainThread::call_main (void)
+{
+  Utf8Const* main_signature = _Jv_makeUtf8Const ("([Ljava.lang.String;)V", 22);
+  Utf8Const* main_name = _Jv_makeUtf8Const ("main", 4);
+
+  _Jv_Method *meth = _Jv_LookupDeclaredMethod (klass, main_name,
+					       main_signature);
+
+  // Some checks from Java Spec section 12.1.4.
+  const char *msg = NULL;
+  if (meth == NULL)
+    msg = "no suitable method `main' in class";
+  else if (! ::java::lang::reflect::Modifier::isStatic(meth->accflags))
+    msg = "`main' must be static";
+  else if (! ::java::lang::reflect::Modifier::isPublic(meth->accflags))
+    msg =  "`main' must be public";
+  if (msg != NULL)
+    {
+      fprintf (stderr, "%s\n", msg);
+      ::exit(1);
+    }
+
+  main_func *real_main = (main_func *) meth->ncode;
+  (*real_main) (args);
+}