Re: [Discuss-gnuradio] gr_vmcircbuf_createfilemapping not available?

[Eric Blossom]

On Sat, Jun 26, 2010 at 01:25:10PM -0500, Brett L. Trotter wrote:
> address@hidden rng2]# usrp_rx_cfile.py -R A:0 -d 4 -g 18 -f 8M -N 1.5M -s
> /tmp/brx_8m_d4_g18_1.5msamples-06-26-10_13-22-37
> Using RX d'board A: Basic Rx
> USB sample rate 16M
> gr_vmcircbuf_createfilemapping: createfilemapping is not available
> 
> address@hidden rng2]# ls -lh /tmp/brx_8m_d4_g18_1.5msamples-06-26-10_13-22-37
> -rw-r--r-- 1 root root 5.8M Jun 26 13:22
> /tmp/brx_8m_d4_g18_1.5msamples-06-26-10_13-22-37
> 
> 
> It appears I've got data, but what is the vmcircbuf error?

This isn't an error, and you should see this only the first time you
attempt to run any GR application as a particular user on a given
machine. (Unless for some reason, you can't write into
~/.gnuradio/prefs/gr_vmcircbuf_default_factory.)
gr_vmcircbuf_createfilemapping is only available under Windows.

FWIW, on most Linux systems, it ends up getting set to 
gr_vmcircbuf_sysv_shm_factory

Eric