66 lines
2.0 KiB
C++
66 lines
2.0 KiB
C++
// natMainThread.cc - Implementation of MainThread native methods.
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/* Copyright (C) 1998, 1999, 2000, 2001, 2003, 2006 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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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <gcj/cni.h>
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#include <jvm.h>
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#include <java-threads.h>
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#include <gnu/java/lang/MainThread.h>
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#include <java/lang/Runtime.h>
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#include <java/lang/ThreadGroup.h>
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typedef void main_func (jobject);
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void
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gnu::java::lang::MainThread::call_main (void)
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{
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Utf8Const* main_signature = _Jv_makeUtf8Const ("([Ljava.lang.String;)V", 22);
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Utf8Const* main_name = _Jv_makeUtf8Const ("main", 4);
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// This is one of the few places where we might have access to an
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// unlinked class.
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_Jv_Linker::wait_for_state (klass, JV_STATE_LOADING);
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_Jv_Method *meth = _Jv_LookupDeclaredMethod (klass, main_name,
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main_signature);
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// Some checks from Java Spec section 12.1.4.
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const char *msg = NULL;
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if (meth == NULL)
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msg = "no suitable method `main' in class";
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else if (! ::java::lang::reflect::Modifier::isStatic(meth->accflags))
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msg = "`main' must be static";
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else if (! ::java::lang::reflect::Modifier::isPublic(meth->accflags))
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msg = "`main' must be public";
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if (msg != NULL)
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{
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fprintf (stderr, "%s\n", msg);
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::exit(1);
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}
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main_func *real_main = (main_func *) meth->ncode;
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(*real_main) (args);
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// Note that we do thread cleanup here. We have to do this here and
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// not in _Jv_RunMain; if we do if after the main thread has exited,
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// our ThreadGroup will be null, and if Runtime.exit tries to create
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// a new Thread (which it does when running shutdown hooks), it will
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// eventually NPE due to this.
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_Jv_ThreadWait ();
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int status = (int) ::java::lang::ThreadGroup::had_uncaught_exception;
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::java::lang::Runtime::exitNoChecksAccessor (status);
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}
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