mirror of git://gcc.gnu.org/git/gcc.git
98 lines
2.2 KiB
Java
98 lines
2.2 KiB
Java
// FirstThread.java - Implementation of very first thread.
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/* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package gnu.gcj.runtime;
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import java.util.jar.*;
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/**
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* @author Tom Tromey <tromey@cygnus.com>
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* @date August 24, 1998
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*/
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final class FirstThread extends Thread
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{
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public FirstThread (Class k, String[] args)
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{
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super (null, null, "main");
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klass = k;
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this.args = args;
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}
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public FirstThread (String class_name, String[] args, boolean is_jar)
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{
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super (null, null, "main");
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klass_name = class_name;
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this.args = args;
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this.is_jar = is_jar;
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}
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public void run()
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{
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if (is_jar)
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klass_name = getMain(klass_name);
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if (klass == null)
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{
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try
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{
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klass = Class.forName(klass_name);
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}
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catch (ClassNotFoundException x)
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{
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throw new NoClassDefFoundError(klass_name);
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}
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}
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call_main();
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}
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private String getMain (String name)
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{
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String mainName = null;
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try {
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JarFile j = new JarFile (name);
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Attributes a = j.getManifest().getMainAttributes();
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mainName = a.getValue(Attributes.Name.MAIN_CLASS);
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} catch (Exception e) {
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// empty
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}
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if (mainName == null)
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{
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System.err.println ("Failed to load Main-Class manifest attribute from\n"
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+ name);
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System.exit(1);
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}
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return mainName;
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}
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private native void call_main ();
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// Private data.
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private Class klass;
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private String klass_name;
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private Object args;
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private boolean is_jar;
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// If the user links statically then we need to ensure that these
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// classes are linked in. Otherwise bootstrapping fails. These
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// classes are only referred to via Class.forName(), so we add an
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// explicit mention of them here.
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static final Class Kcert = java.security.cert.Certificate.class;
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static final Class Kfile = gnu.gcj.protocol.file.Handler.class;
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static final Class Khttp = gnu.gcj.protocol.http.Handler.class;
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static final Class Kjar = gnu.gcj.protocol.jar.Handler.class;
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}
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