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Re: SEGEV defines

To: linux-mips@linux-mips.org
Subject: Re: SEGEV defines
From: Bradley Bozarth <bbozarth@cisco.com>
Date: Wed, 13 Nov 2002 18:11:47 -0800 (PST)
Cc: george@mvista.com
In-reply-to: <200211080914.KAA14181@pallas.spacetec.no>
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
This presents a problem that I just ran into.  What should the solution 
be?  Either glibc or the kernel needs to change as far as I can tell, in 
order for programs compiled against glibc and using these SIGEV defines to 
work w/ the mips kernel.  Is this file currently wrong?

glibc-2.3.1/sysdeps/unix/sysv/linux/mips/bits/siginfo.h

Would this patch fix it?

--- siginfo.h.orig      Wed Nov 13 18:04:58 2002
+++ siginfo.h   Wed Nov 13 18:11:15 2002
@@ -295,11 +295,11 @@
 /* `sigev_notify' values.  */
 enum
 {
-  SIGEV_SIGNAL = 0,            /* Notify via signal.  */
+  SIGEV_SIGNAL = 129,          /* Notify via signal.  */
 # define SIGEV_SIGNAL  SIGEV_SIGNAL
-  SIGEV_NONE,                  /* Other notification: meaningless.  */
+  SIGEV_NONE = 128,            /* Other notification: meaningless.  */
 # define SIGEV_NONE    SIGEV_NONE
-  SIGEV_THREAD                 /* Deliver via thread creation.  */
+  SIGEV_THREAD = 131           /* Deliver via thread creation.  */
 # define SIGEV_THREAD  SIGEV_THREAD
 };


On Fri, 8 Nov 2002, Tor Arntsen wrote:

> On Nov 7, 23:11, Daniel Jacobowitz wrote:
> >Presumably they match IRIX... like the rest of MIPS's oddball
> >definitions.  A little hard to change them now.
> 
> FWIW: You are correct, those values come from IRIX.
> 
> >On Thu, Nov 07, 2002 at 12:33:55PM -0800, Bradley Bozarth wrote:
> >> Can these be changed?
> >> 
> >> > Now a question, why does mips use these values:
> >> >  #define SIGEV_SIGNAL   129     /* notify via signal */
> >> >  #define SIGEV_CALLBACK 130     /* ??? */
> >> >  #define SIGEV_THREAD   131     /* deliver via thread
> >> > creation */
> >> >
> >> > It is the only platform that adds anything to the simple
> >> > 1,2,3 values used on other platforms.  The reason I ask, is
> >> > that I would like to change them to conform to all the
> >> > others.
> 


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