# Re: ControlPort 3.7.8rc1

**URL:** <https://www.ruby-forum.com/t/re-controlport-3-7-8rc1/242882>\
**Category:** GNU Radio\
**Created:** [August 5, 2015, 7:22am UTC](https://www.ruby-forum.com/t/re-controlport-3-7-8rc1/242882 "2015-08-05T07:22:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sadaf\_N](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\
**Post date:** [August 5, 2015, 7:22am UTC](https://www.ruby-forum.com/t/re-controlport-3-7-8rc1/242882/1 "2015-08-05T07:22:29Z")

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> > Inspecting GNU Radio Applications with ControlPort and Performance
> > 
> > > Gnuradio enabled component shows
> 
> page linked above is from our weekly development builds.

ControlPort is written in python ?

When I ran qa\_ctrlport\_probes.py. I got a segmentation fault first time.  
Then I ran the other two qa codes they passed successfully without any  
core  
dump. When I ran qa\_ctrlport\_probes.py again it passed successfully.

## sdr@sdr-dev:~/gr\_examples$ ./qa\_ctrlport\_probes.py INFO: Apache Thrift: -h sdr-dev -p 57403 …

Ran 5 tests in 0.509s

OK  
_Segmentation fault (core dumped)_

## sdr@sdr-dev:~/gr\_examples$ ./qa\_cpp\_py\_binding.py INFO: Apache Thrift: -h sdr-dev -p 35595 …

Ran 2 tests in 0.105s

OK

## sdr@sdr-dev:~/gr\_examples$ ./qa\_cpp\_py\_binding\_set.py INFO: Apache Thrift: -h sdr-dev -p 38301 …

Ran 2 tests in 0.134s

OK

## sdr@sdr-dev:~/gr\_examples$ ./qa\_ctrlport\_probes.py INFO: Apache Thrift: -h sdr-dev -p 38644 …

Ran 5 tests in 0.511s

## OK sdr@sdr-dev:~/gr\_examples$ ./qa\_ctrlport\_probes.py INFO: Apache Thrift: -h sdr-dev -p 48394 …

Ran 5 tests in 0.510s

OK

What could be the cause? I thought I should share because it is a new  
release and is in testing stage.

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**Author:** ![bob\_wole](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/b4bc9f/32.png) [@bob\_wole](https://www.ruby-forum.com/u/bob_wole)\
**Post date:** [August 5, 2015, 3:47pm UTC](https://www.ruby-forum.com/t/re-controlport-3-7-8rc1/242882/2 "2015-08-05T15:47:48Z")

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On Wed, Aug 5, 2015 at 1:21 AM, bob wole [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> > > Am 04.08.2015 um 10:09 schrieb Jeon:
> > > 
> > > Jeon.
> > > 
> > > > Bob  
> > > > to  
> > > > Tom  
> > > > INFO: Apache Thrift: -h sdr-dev -p 57403
> 
> * * *
> 
> ## OK …
> 
> Bob

There is a bug in Thrift 0.9.2 that I’m going to guess is the cause of  
that  
seg fault. See our notes on building Thrift and the patch that we have  
for  
it:

[http://gnuradio.org/redmine/projects/gnuradio/wiki/ControlPort](http://gnuradio.org/redmine/projects/gnuradio/wiki/ControlPort)

I believe that patch has been accepted, but after the 0.9.2 release.

Tom