Experimental Physics and
Industrial Control System

Heinz Junkes <[email protected]> · Fri, 20 Nov 2015 17:24:08 +0100

Packets for gvfs (and gvfs-backends where missing) :-(

After installing 

ii  gvfs:amd64                                  1.20.3-0ubuntu1.2                          amd64        userspace virtual filesystem - GIO module
ii  gvfs-backends                               1.20.3-0ubuntu1.2                          amd64        userspace virtual filesystem - backends
ii  gvfs-bin                                    1.20.3-0ubuntu1.2                          amd64        userspace virtual filesystem - binaries
ii  gvfs-common                                 1.20.3-0ubuntu1.2                          all          userspace virtual filesystem - common data files
ii  gvfs-daemons                                1.20.3-0ubuntu1.2                          amd64        userspace virtual filesystem - servers
ii  gvfs-libs:amd64                             1.20.3-0ubuntu1.2                          amd64        userspace virtual filesystem - private libraries

aravislib runs on an ioc too.

Heinz

> On 19 Nov 2015, at 15:00, Heinz Junkes <[email protected]> wrote:
> 
> Hi all,
> 
> I am still fighting with glib running within procserv (or remote via ssh).
> 
> The aravislib used in areadetector to connect to GigE (Genicam) cameras uses glib.
> 
> Running the stuff locally works well. Running it remotely it fails.
> 
> Testfile:
> 
> h1@earth:~/ARAVIS/aravis/tests$ more loadhttptest.c
> 
> #include <glib.h>
> #include <gio/gio.h>
> #include <stdlib.h>
> #include <stdio.h>
> #include <arv.h>
> 
> int
> main (int argc, char **argv)
> {
> 	GFile *file;
> 	GFileInputStream *stream;
> 	const char *filename;
> 	char *genicam = NULL;
> 	char **tokens;
> 	gsize len = 0;
> GError *err = NULL;
> 
> 	if (argc != 2) {
> 		printf ("Usage: load-http-test <URL>\n");
> 		return EXIT_FAILURE;
> 	}
> 
> 	filename = argv[1];
> 
> 	tokens = g_regex_split (arv_gv_device_get_url_regex (), filename, 0);
> 
> 	if (tokens[0] != NULL && tokens[1] != NULL) {
> 		if (g_ascii_strcasecmp (tokens[1], "http:") == 0) {
> 			file = g_file_new_for_uri (filename);
> 			stream = g_file_read (file, NULL, &err);
> 
> if (err != NULL) {
>             g_error("Could not open %s for reading: %s\n", filename, err->message);
>             g_error_free(err);
>             return 1;
>      }
> 
> 
> 			if(stream) {
> 				GDataInputStream *data_stream;
> 
> 				data_stream = g_data_input_stream_new (G_INPUT_STREAM (stream));
> 				genicam = g_data_input_stream_read_upto (data_stream, "", 0, &len, NULL, NULL);
> 
> 				g_object_unref (data_stream);
> 				g_object_unref (stream);
> 			}
> 			g_object_unref (file);
> 		}
> 	}
> 
> 	g_strfreev (tokens);
> 
> 	printf ("size = %lu\n", len);
> 	printf ("%s\n", genicam != NULL ? genicam : "NULL");
> 
> 	g_free (genicam);
> 
> 	return EXIT_SUCCESS;
> }
> 
> 
> Running it locally it shows:
> 
> h1@earth:~/ARAVIS/aravis/tests$ ./load-http-test http://141.14.128.47/dias_gige_desc.xml
> size = 64451
> <?xml version="1.0" encoding="utf-8"?>
> 
> <RegisterDescription
>        ModelName="Pyroview"
>        VendorName="DIAS"
>        StandardNameSpace="None"
>        SchemaMajorVersion="1"
>        SchemaMinorVersion="0"
>        SchemaSubMinorVersion="1"
>        MajorVersion="1"
>        MinorVersion=“ …
> 
> …
> 	<IntSwissKnife Name="NOT_TLParamsLocked">
> 		<ToolTip>Negation of the TLParamsLocked value</ToolTip>
> 		<Visibility>Invisible</Visibility>
> 		<pVariable Name="TLPL">TLParamsLocked</pVariable>
> 		<Formula>(TLPL = 0) ? 1 : 0</Formula>
> 	</IntSwissKnife>		
> 
> </RegisterDescription>
> 
> Running it remote via ssh it shows :
> 
> h1@earth:~/ARAVIS/aravis/tests$ ./load-http-test http://141.14.128.47/dias_gige_desc.xml
> 
> ** (process:11455): ERROR **: Could not open http://141.14.128.47/dias_gige_desc.xml for reading: Operation not supported
> 
> Trace/breakpoint trap (core dumped)
> 
> 
> I assume problems with dbus/session/stream stuff. About one year ago I could overcome the problem by adding the
> following to the st.cmd used by procserv :
> 
> 
> #!/bin/bash 
> 
> PID_FILE=/tmp/dbus_pid
> 
> if [ -a $PID_FILE ]
>  then
> #   echo "$PID_FILE exists ..."
>    PID=`cat $PID_FILE` 
> #   echo "kill_pid $PID"
>    kill -9 $PID
> fi
> 
> if test -z "$DBUS_SESSION_BUS_ADDRESS" ; then
>  ## if not found, launch a new one
>  eval `dbus-launch --sh-syntax --exit-with-session`
>  echo "D-Bus per-session daemon address is: $DBUS_SESSION_BUS_ADDRESS"
>  echo "$DBUS_SESSION_BUS_PID" >$PID_FILE
> fi
> #date
> #sleep 1
> #/usr/local/bin/arv-tool-0.4 -n 'DIAS Infrared GmbH-C1076026' genicam >/tmp/dias_genicam.out
> #sleep 1
> #date
> cd /srv/ioc/sys/iocBoot/iocdias
> ./st.cmd
> #kill -9 $DBUS_SESSION_BUS_PID
> 
> 
> But this doesn’t help anymore.
> 
> Any Ideas?
> Thx Heinz
> 
> 
> 
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System