UNCLASSIFIED
Hi James, apologies, I should have been more clear - the error occurs in
the call to OA::Application start (not the worker start), therefore the
call to getPort is not reached. The code is below, it does not get past
the "app->start();".
OA::Application *app = foos.Setup(argc, argv); // XML string defined
and applied here.
fprintf(stderr, " ################# Application
initialising...\n");
app->initialize();
fprintf(stderr, "Application established: containers, workers,
connections all created\n");
fprintf(stderr, "Communication with the application established\n");
app->start();
fprintf(stderr, " ################# Application
started/running\n");
ProcessData(app);
app->wait();
fprintf(stderr, " ################# Application finished\n");
void ProcessData(OA::Application *app)
{
OA::ExternalPort &ep = app->getPort("finaldata");
OA::ExternalBuffer *b = NULL;
uint8_t *data;
uint32_t length;
uint8_t opcode;
bool end;
int counter = 1000;
while (counter > 0)
{
if ((b = ep.getBuffer(data, length, opcode, end)))
{
printf("Got external buffer...\n");
b->release();
}
counter--;
}
}
Nigel
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Today's Topics:
1. External ports error [SEC=UNCLASSIFIED]
(Merritt, Nigel (Contractor))
2. Re: External ports error [SEC=UNCLASSIFIED] (James Kulp)
----------------------------------------------------------------------
Message: 1
Date: Mon, 16 Apr 2012 15:55:07 +0930
From: "Merritt, Nigel (Contractor)"
<[email protected]>
To: <[email protected]>
Subject: [opencpi_dev] External ports error [SEC=UNCLASSIFIED]
Message-ID:
<f92472a1995d1042bf9897ebfbe7221d0280e...@ednex513.dsto.defence.gov.au>
Content-Type: text/plain; charset="us-ascii"
UNCLASSIFIED
Gents,
I have set up our test system with an RCC worker (foo_generator) that
continuously generates data to its output port ("dataout").
The system is set up to either:
a) Attach an external port to dataout, which is read by the
application or
b) Create a second worker (foo_receiver) that accepts the data
through its input port ("datain").
In this case, there is no external port.
I.e:
[foo_generator] --(external port)--> <foo_application>
[foo_generator] --(dataout)--> [foo_receiver]
The difference is simply a parameter to determine the string used.
I have included the relevent code below, but in summary, a) always
generates a segmentation fault during the call to 'start', for the same
reasons I outlined in my previous email, i.e. the PORT_NOT_CONNECTED
error in OcpiRccWorker.cxx, while b) works fine.
No worker code is reached before the seg fault occurs, so I have not
included the start or run code here.
====== foo_generator.xml ======
<RccImplementation controloperations="start">
<xi:include href="foo_generator_spec.xml"/> </RccImplementation>
====== foo_generator_spec.xml ======
<ComponentSpec Name="foo_generator">
<Properties>
<Property Name="numBuffers" type="ULong" Writable="true"/>
<Property Name="stopSending" type="Bool" Writable="true"/>
</Properties>
<DataInterfaceSpec Name="dataout" Producer="true">
<xi:include href="stream_protocol.xml"/>
</DataInterfaceSpec>
</ComponentSpec>
====== String used to create the system in OA::Application constructor -
for a) ====== std::string fooapp("<application>");
fooapp.append("<instance worker='foo_generator'>"); fooapp.append("
<property name='stopSending' value='0'/>");
fooapp.append("</instance>");
fooapp.append("<connection>"
" <external name='finaldata'/>"
" <port instance='foo_generator' name='dataout'/>"
"</connection>");
fooapp.append("</application>");
====== String used to create the system in OA::Application constructor -
for b) ====== std::string fooapp("<application>");
fooapp.append("<instance worker='foo_generator'>"); fooapp.append("
<property name='stopSending' value='0'/>");
fooapp.append("</instance>"); fooapp.append("<instance
worker='foo_receiver'
selection='model=="RCC"'/>");
fooapp.append("<connection>"
" <port instance='foo_generator' name='dataout'/>"
" <port instance='foo_receiver' name='datain'/>"
"</connection>");
fooapp.append("</application>");
====== Text shown on error ======
Application established: containers, workers, connections all created
Communication with the application established
<<=== start called here ===>>
terminate called after throwing an instance of
'OCPI::Util::EmbeddedException'
Aborted
make: *** [run] Error 134
Nigel
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------------------------------
Message: 2
Date: Mon, 16 Apr 2012 08:39:17 -0400
From: James Kulp <[email protected]>
To: [email protected]
Subject: Re: [opencpi_dev] External ports error [SEC=UNCLASSIFIED]
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
Hi Nigel,
I am guessing that you have not connected the external port via the
app.getPort("finaldata") call before
issuing app.start(). Even though the xml defines the external port
connection, it can't make that connection until the app actually
retrieves the port using getPort, since getPort can have (optional)
parameters that affect that connection.
I.e., you can't start a worker until its ports are truly ready to move
data, and that can't happen until the external ports are fully
"established", which means "connected to the application".
The cat_xml example is essentially what you are doing.
I made a note to clarify this in the doc, and perhaps catch/report the
error at a higher level.
Let us know if this was it, or not.
Thanks,
Jim
On 4/16/12 2:25 AM, Merritt, Nigel (Contractor) wrote:
>
> *UNCLASSIFIED*
>
> Gents,
>
> I have set up our test system with an RCC worker (foo_generator) that
> continuously generates data to its output port ("dataout").
>
> The system is set up to either:
> a) Attach an external port to dataout, which is read by the
> application or
> b) Create a second worker (foo_receiver) that accepts the data
> through its input port ("datain").
> In this case, there is no external port.
>
> I.e:
>
> [foo_generator] --(external port)--> <foo_application>
> [foo_generator] --(dataout)--> [foo_receiver]
>
> The difference is simply a parameter to determine the string used.
>
> I have included the relevent code below, but in summary, a) always
> generates a segmentation fault during the call to 'start', for the
> same reasons I outlined in my previous email, i.e. the
> PORT_NOT_CONNECTED error in OcpiRccWorker.cxx, while b) works fine.
>
> No worker code is reached before the seg fault occurs, so I have not
> included the start or run code here.
>
> ====== foo_generator.xml ======
> <RccImplementation controloperations="start"> <xi:include
> href="foo_generator_spec.xml"/> </RccImplementation>
>
> ====== foo_generator_spec.xml ======
> <ComponentSpec Name="foo_generator">
> <Properties>
> <Property Name="numBuffers" type="ULong" Writable="true"/> <Property
> Name="stopSending" type="Bool" Writable="true"/> </Properties>
> <DataInterfaceSpec Name="dataout" Producer="true"> <xi:include
> href="stream_protocol.xml"/> </DataInterfaceSpec> </ComponentSpec>
>
>
> ====== String used to create the system in OA::Application constructor
> -*for a)*====== std::string fooapp("<application>");
>
> fooapp.append("<instance worker='foo_generator'>"); fooapp.append("
> <property name='stopSending' value='0'/>");
> fooapp.append("</instance>");
>
> fooapp.append("<connection>"
> " <external name='finaldata'/>"
> " <port instance='foo_generator' name='dataout'/>"
> "</connection>");
>
> fooapp.append("</application>");
>
>
> ====== String used to create the system in OA::Application constructor
> -*for b)* ====== std::string fooapp("<application>");
>
> fooapp.append("<instance worker='foo_generator'>"); fooapp.append("
> <property name='stopSending' value='0'/>");
> fooapp.append("</instance>"); fooapp.append("<instance
> worker='foo_receiver'
> selection='model=="RCC"'/>");
>
> fooapp.append("<connection>"
> " <port instance='foo_generator' name='dataout'/>"
> " <port instance='foo_receiver' name='datain'/>"
> "</connection>");
>
> fooapp.append("</application>");
>
> ====== Text shown on error ======
> Application established: containers, workers, connections all created
> Communication with the application established <<=== start called here
> ===>> terminate called after throwing an instance of
> 'OCPI::Util::EmbeddedException'
> Aborted
> make: *** [run] Error 134
>
> Nigel
>
> *IMPORTANT*: This email remains the property of the Department of
> Defence and is subject to the jurisdiction of section 70 of the Crimes
> Act 1914. If you have received this email in error, you are requested
> to contact the sender and delete the email.
>
>
>
> _______________________________________________
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