Robert Roberts wrote:
> Hello!
>
>
>
> The new build works well on the Pentium system I have GNURadio is up
> and running with the USRP. I now see what was meant with samples being
> dropped for the USRP. Has anyone made any progress on remeding this?
>
>
> For the Opteron System GNURadio still has issues. Running an
> example still get the following error.
>
>
> C:\gnuradio-examples-0.4\python\audio>mono_tone.py
> gr_vmcircbuf_mmap_createfilemapping: non contiguous mmap - 012D0000
> 00000000 00040000 01310000
> gr_vmcircbuf_mmap_createfilemapping: non contiguous mmap - 012D0000
> 00000000 00040000 01310000
> gr_vmcircbuf_sysv_shm: sysv shared memory is not available
> gr_vmcircbuf_mmap_shm_open: mmap or shm_open is not available
> gr_vmcircbuf_mmap_tmpfile: mmap or mkstemp is not available
> gr_vmcircbuf_sysconfig: unable to find a working factory!
>
>
> If I run the test program I see:
>
> C:\Python24\Lib\site-packages\gnuradio\gr>test_vmcircbuf.exe
> Testing gr_vmcircbuf_createfilemapping_factory...
> ....... gr_vmcircbuf_createfilemapping_factory: OK
> Testing gr_vmcircbuf_sysv_shm_factory...
> gr_vmcircbuf_sysv_shm: sysv shared memory is not available
> ....... gr_vmcircbuf_sysv_shm_factory: Doesn't work
> Testing gr_vmcircbuf_mmap_shm_open_factory...
> gr_vmcircbuf_mmap_shm_open: mmap or shm_open is not available
> ....... gr_vmcircbuf_mmap_shm_open_factory: Doesn't work
> Testing gr_vmcircbuf_mmap_tmpfile_factory...
> gr_vmcircbuf_mmap_tmpfile: mmap or mkstemp is not available
> ....... gr_vmcircbuf_mmap_tmpfile_factory: Doesn't work
> test_vmcircbuf: OK. We've got at least one workable solution
>
> It says there is one workable solution. How should I go about
> exploiting this?
I don't know yet, but we will probably figure it out.
The testing code does a limited set of tests, which all seem to succeed.
It tests for the following:
(granualarity is normally 64 kB if I remember well on windows, it might be
different for an opteron)
ok &= test_a_bunch (f, 1, 1 * granularity, &start, v); // 1 test of
x granularity KB
if (ok){
ok &= test_a_bunch (f, 64, 4 * granularity, &start, v); // 64 tests of
4 x granularity KB
ok &= test_a_bunch (f, 32, 4 * (1L << 20), &start, v); // 32 tests of
4MB
ok &= test_a_bunch (f, 256, 256 * (1L << 10), &start, v); // 256 tests of
x 256KB This succeedes
}
The actual code uses 256 KB (third number in the error is the hexadecimal
size: non contiguous mmap - 012D0000 00000000 00040000 01310000)
This has succeeded in the last test of the test_vmcircbuf code so I am lost to
why this failes now.
The zero in the error tells me that the whole following code failes:
// NOTE: d_second_copy will be NULL if MapViewFileEx() fails to allocate the
// requested address space
d_second_copy = MapViewOfFileEx((HANDLE)d_handle, // handle to map object
FILE_MAP_WRITE, // read/write
permission
0,
0,
size,
(char *)d_first_copy + size);//(LPVOID)
((char *)d_first_copy + size));
The one thing I can come up with is that d_handle is already in use.
This should be prevented by the following code:
static int s_seg_counter = 0;
char seg_name[1024];
snprintf (seg_name, sizeof (seg_name), "/gnuradio-%d-%d", getpid (),
s_seg_counter);
d_handle = CreateFileMapping(INVALID_HANDLE_VALUE, // use paging file
NULL, // default security
PAGE_READWRITE, // read/write access
0, // max. object size
size, // buffer size
seg_name); // name of mapping
object
s_seg_counter++;
Note that s_seg_counter is a static int.
So it should increase with every invocation of gr_vmcircbuf_createfilemapping()
This is only true for a single-treaded case but as far as I know this IS
singlethreaded.
The same trick is used in for example gr_vmcircbuf_mmap_shm_open()
Could other people with an athlon64/opteron please try the windows-installer
and see if they get the same results.
Greetings,
Martin
>
>
>
>
> Thanks!
> ~Chris~
>
> ----- Original Message -----
> From: Martin Dvh <[EMAIL PROTECTED]>
> Date: Tuesday, January 24, 2006 10:03 pm
> Subject: Re: [Discuss-gnuradio] Windows Port Error
>
>>Robert Roberts wrote:
>>
>>>I installed the newest version onto the Pentium D which
>>
>>previously had
>>
>>>nothing on the system, so no old files existed. I will do the same
>>>shortly for the original system.
>>
>>I was getting the same error myself (using the binary installer or
>>just a plain make install from the msys/mingw prompt)
>>And I have been very thorough in removing everything usrp and
>>gnuradio related.
>>
>>I have tried all kinds of things but I didn't got it to work with
>>the gnuradio-2.6 sourcetree
>>The good news is that I did get it to work with the current cvs
>>sourcetree.I rebuilt everything from currentcvs, patched a few
>>things and now on my machine it is working again.
>>
>>Please try again with this new installer.
>>(please uninstall the old versions first)
>>
>>http://www.olifantasia.com/pub/projects/gnuradio/mdvh/mingw/binary-
>>installer/gnuradio-with-usrp/
>>setup-gnuradio-complete-2.6cvs.exe
>>
>>Greetings,
>>Martin
>>
>>
>
>
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