Re: CVS commit: pkgsrc/x11/libxshmfence

[Joerg Sonnenberger <joerg%britannica.bec.de@localhost>]

On Wed, Apr 29, 2015 at 02:31:42PM +0000, Tobias Nygren wrote:
> Module Name:  pkgsrc
> Committed By: tnn
> Date:         Wed Apr 29 14:31:42 UTC 2015
> 
> Added Files:
>       pkgsrc/x11/libxshmfence: DESCR Makefile PLIST buildlink3.mk distinfo
> 
> Log Message:
> Import libxshmfence-1.2 from pkgsrc-wip as x11/libxshmfence.
> (needed to build DRI3 support in MesaLib and modular-xorg-server on Linux)
> 
> This library offers a CPU-based synchronization primitive compatible
> with the X SyncFence objects that can be shared between processes
> using file descriptor passing.
> 
> There are three underlying implementations:
> 
>  1) On Linux, the library uses futexes
> 
>  2) On FreeBSD, the library uses umtx
> 
>  3) On other systems, the library uses posix mutexes and condition
>     variables.

...on NetBSD it is broken because it depends on inter-process mutexes.

Joerg