From owner-freebsd-java@FreeBSD.ORG  Sat Aug  6 06:29:17 2005
Return-Path: <owner-freebsd-java@FreeBSD.ORG>
X-Original-To: java@FreeBSD.org
Delivered-To: freebsd-java@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id F21BA16A420
	for <java@FreeBSD.org>; Sat,  6 Aug 2005 06:29:16 +0000 (GMT)
	(envelope-from mi@blue.virtual-estates.net)
Received: from mail25.sea5.speakeasy.net (mail25.sea5.speakeasy.net
	[69.17.117.27]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2456143D48
	for <java@FreeBSD.org>; Sat,  6 Aug 2005 06:29:16 +0000 (GMT)
	(envelope-from mi@blue.virtual-estates.net)
Received: (qmail 22153 invoked from network); 6 Aug 2005 06:29:15 -0000
Received: from aldan.algebra.com (HELO blue.virtual-estates.net)
	([216.254.65.224]) (envelope-sender <mi@blue.virtual-estates.net>)
	by mail25.sea5.speakeasy.net (qmail-ldap-1.03) with AES256-SHA
	encrypted SMTP for <java@FreeBSD.org>; 6 Aug 2005 06:29:15 -0000
Received: from blue.virtual-estates.net (blue [127.0.0.1])
	by blue.virtual-estates.net (8.13.3/8.13.3) with ESMTP id
	j766TDnZ048418; Sat, 6 Aug 2005 02:29:13 -0400 (EDT)
	(envelope-from mi@blue.virtual-estates.net)
Received: (from mi@localhost)
	by blue.virtual-estates.net (8.13.3/8.13.3/Submit) id j766TDiU048417;
	Sat, 6 Aug 2005 02:29:13 -0400 (EDT) (envelope-from mi)
From: "Mikhail T." <mi@aldan.algebra.com>
Message-Id: <200508060629.j766TDiU048417@blue.virtual-estates.net>
To: java@FreeBSD.org, glewis@FreeBSD.org, phantom@FreeBSD.org
Date: Sat, 6 Aug 2005 02:29:13 -0400 (EDT)
X-Face: %UW#n0|w>ydeGt/b@1-.UFP=K^~-:0f#O:D7w<gv/&E-lL7twZCT8B~/PA4|\t$ti+22K">
	hJ5G_<5143Bb3kOIs9XpX+"V+~$adGP:J|SLieM31VIhqXeLBli"<kcG^EOVih
	y+z3/UR{6SCQ
X-Mailer: ELM [version 2.4ME+ PL121h (25)]
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset=US-ASCII
Cc: 
Subject: more on the jint vs. intptr_t
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, 06 Aug 2005 06:29:17 -0000

More specifically, the LiveConnect part of Mozilla family of browsers is
using Java's GetJavaWrapper() and UnwrapJavaWrapper() functions to store
_pointers_ to the JavaScript objects -- see comments in

	work/mozilla/js/src/liveconnect/jsjava.h

as extracted by firefox or mozilla ports. These pointers are presumed to
be as wide as jint -- see calls to get_java_wrapper() in

	work/mozilla/js/src/liveconnect/jsj_JSObject.c

Currently, the only Java (sort of) available for amd64 is jdk15, which
does not build the browser plugin for some reason anyway :-( However, I
hope, this will some day be fixed and the browsers better be ready.

Defining jint as intptr_t just for this purpose is, probably, wasteful.
Instead, the GetJavaWrapper() and UnwrapJavaWrapper() functions should,
probably, be modified to accept either a jlong (a warning-triggering
overkill on i386) or a true intptr_t.

Any comments?

	-mi