On Tue, Oct 19, 2010 at 08:34:40PM -0400, Philip Balister wrote:
> I'm seeing this issue on my omap3 install with the dialtone flowgraph:
>
> # python /usr/share/gnuradio/examples/audio/dial_tone.py
>
>
> gr_vmcircbuf_createfilemapping: createfilemapping is not available
>
> gr_vmcircbuf_sysv_shm: shmat (3): Invalid argument
>
> l# python /usr/share/gnuradio/examples/audio/dial_tone.py
>From $ man shmat
EINVAL Invalid shmid value, unaligned (i.e., not page-aligned and SHM_RND
was not speci-
fied) or invalid shmaddr value, or can’t attach segment at shmaddr, or
SHM_REMAP was
specified and shmaddr was NULL.
> In both cases I can hear the dial tone fine. I'm curious why I get
> the shmat error the first time only.
You should see it only once ever, if the program can write to
~/.gnuradio/prefs. Generally this gets written during "make check".
Does "make check" work?
Why are you running as root?
> It looks like gnuradio falls
> back to another method of creating the shared segment.
Yes it does.
> I'd like to resolve the shmat issue though,
Set a breakpoint with gdb, or add printfs.
> because I am also trying to run the kalibrate program and have the
> same shmat issue there, but it does not have a fall back method.
Eric
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