From owner-freebsd-java@FreeBSD.ORG  Sat Sep  1 11:11:28 2007
Return-Path: <owner-freebsd-java@FreeBSD.ORG>
Delivered-To: freebsd-java@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 10C7B16A417
	for <freebsd-java@freebsd.org>; Sat,  1 Sep 2007 11:11:28 +0000 (UTC)
	(envelope-from michiel@boland.org)
Received: from neerbosch.nijmegen.internl.net (neerbosch.nijmegen.internl.net
	[217.149.193.38])
	by mx1.freebsd.org (Postfix) with ESMTP id A11E913C47E
	for <freebsd-java@freebsd.org>; Sat,  1 Sep 2007 11:11:27 +0000 (UTC)
	(envelope-from michiel@boland.org)
Received: from neerbosch.nijmegen.internl.net by neerbosch.nijmegen.internl.net
	via neerbosch.nijmegen.internl.net [217.149.193.38] with ESMTP for
	<freebsd-java@freebsd.org>
	id l81BBDcH004484 (8.13.4/1.4); Sat, 1 Sep 2007 13:11:13 +0200 (MEST)
Received: from localhost by neerbosch.nijmegen.internl.net
	via mboland@localhost with ESMTP for <freebsd-java@freebsd.org>
	id l81BBDvI004481 (8.13.4/2.02); Sat, 1 Sep 2007 13:11:13 +0200 (MEST)
X-Authentication-Warning: neerbosch.nijmegen.internl.net: mboland owned
	process doing -bs
Date: Sat, 1 Sep 2007 13:11:11 +0200 (MEST)
From: Michiel Boland <michiel@boland.org>
To: freebsd-java@freebsd.org
Message-ID: <Pine.GSO.4.64.0709011258540.2943@neerbosch.nijmegen.internl.net>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
Subject: still problems with exec() in jdk16
X-BeenThere: freebsd-java@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Porting Java to FreeBSD <freebsd-java.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-java>,
	<mailto:freebsd-java-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-java>
List-Post: <mailto:freebsd-java@freebsd.org>
List-Help: <mailto:freebsd-java-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-java>,
	<mailto:freebsd-java-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 01 Sep 2007 11:11:28 -0000

Hi. Sorry to be a bore, but there are still problems with exec() in the 
current java/jdk16 port. I noticed this after the subversion module 
in netbeans broke. I narrowed it down to the following.

import java.io.IOException;

public class ExecTest {
     public static void main(String[] args) throws IOException, 
InterruptedException {
         Process p = Runtime.getRuntime().exec("ls", new String[] { } );
         int exitcode = p.waitFor();
         System.out.println("exitcode = " + exitcode);
     }
}

This program, when run with the jdk16 java will generate a hot spot error.

Stack trace from hs_err_pid*.log:

C  [libc.so.7+0xc6d30]  strcmp+0x60
C  [libjava.so+0x20317]  Java_java_lang_UNIXProcess_forkAndExec+0x367

The only reference to strcmp in UNIXProcess_md.c that makes sense here is 
in execvpe

         /* Parent and child PATH the same?  Use child PATH. */
         || (strcmp(parentPath, effectivePath()) == 0)

It appears that parentPath is 0. The only way that could happen is that 
Java_java_lang_UNIXProcess_initIDs is never called.

I believe the following patch needs to be made to UNIXProcess.java.bsd. 
(In effect, UNIXProcess.java.bsd should be identical to 
UNIXProcess.java.linux.)

--- UNIXProcess.java.bsd.orig	2007-08-31 20:43:03.000000000 +0200
+++ UNIXProcess.java.bsd	2007-08-31 21:24:40.000000000 +0200
@@ -195,4 +195,10 @@
          }
      }

+    /* This routine initializes JNI field offsets for the class */
+    private static native void initIDs();
+
+    static {
+	initIDs();
+    }
  }