Re: [Discuss-gnuradio] Unable to stop the flow graph after calling stop()

[Miklos Maroti]

Dear Activecat,

Throw an exception. It will kill the application.

Miklos

On Mon, Mar 3, 2014 at 11:57 AM, Activecat <address@hidden> wrote:
> Dear Marcus,
>
> Says, the constructor performed some basic checking on the constructor
> arguments, then had found some fatal error (says, division by zero) and
> decided to ban the flowgraph from being executed.
>
> A workaround is to get the constructor to set a class variable to false,
> says,
>     d_valid = false;
>
> then in the work() it will check this d_valid as follows:
>
>     int work()
>     {
>         if ( ! d_valid )
>            return -1
>         .........
>         .........  (other stuff as usual)
>     }
>
>
> But isn't there a better way to do this ..?
> (to ban the flowgraph from being executed within the constructor)
>
> Please advise, thanks.
>
> Regards,
> Activecat
>
>
>
> On Mon, Mar 3, 2014 at 5:25 PM, Marcus Müller <address@hidden> wrote:
>>
>> -----BEGIN PGP SIGNED MESSAGE-----
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>>
>> Activecat,
>>
>> the constructor of a block must have been called before the block has
>> been connect()ed; so there's no way a flowgraph is already running
>> when your block's constructor is called.
>>
>> Greetings,
>> Marcus
>>
>> On 03.03.2014 06:53, Activecat wrote:
>> > Dear Sir, Thank you very much.
>> >
>> > What if, we want to stop the flow graph in the constructor of a
>> > block?
>> >
>> > In work() we can just return -1. But in constructor, what value
>> > should be returned, also -1  ?
>> >
>> > Regards, Activecat
>> >
>> >
>> > On Sun, Feb 2, 2014 at 9:05 PM, Martin Braun
>> > <address@hidden> wrote:
>> >
>> >> On 01.02.2014 13:51, Activecat wrote:
>> >>
>> >>> But the function stop() fails to work. The flow graph continue
>> >>> executing infinitely...
>> >>>
>> >>> Question: How to stop the flow graph when this->d_complete ==
>> >>> true ?
>> >>>
>> >>
>> >> Return -1 (or WORK_DONE) in your work() function.
>> >>
>> >> MB
>> >>
>> >>
>> >> _______________________________________________ Discuss-gnuradio
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>> >>
>> >
>> >
>> >
>> > _______________________________________________ Discuss-gnuradio
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>> >
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