Re: [Discuss-gnuradio] FIFO file , File sink , File souce

[CEL]

Again, can't tell what you're trying to do, can't help you! Describe
what problem you're trying to solve.
On Wed, 2018-06-20 at 12:15 +0000, Amirhosein naseri wrote:
> The flowgraph i mentioned was a simplified version of my work ...
> 
> I can seprate it in two flowgraph, so in this situation i must run which side 
> of transfer first??
> 
> On Wednesday, June 20, 2018, 4:40:06 PM GMT+4:30, Müller, Marcus (CEL) 
> <address@hidden> wrote:
> 
> 
> Well, I don't know what problem you're solving. It works if you're not
> doing this in the same flow graph.
> 
> On Wed, 2018-06-20 at 12:09 +0000, Amirhosein naseri wrote:
> > Tnx Marcus for replying 
> > 
> > so based on what u said ... we can not use such configuration with FIFO , 
> > is it ture???
> > if NO , what is the solution???
> > 
> > On Wednesday, June 20, 2018, 4:28:52 PM GMT+4:30, Müller, Marcus (CEL) 
> > <address@hidden> wrote:
> > 
> > 
> > That's normal FIFO behaviour! From `man 3 mkfifo`:
> > 
> > > Opening a FIFO for reading normally blocks until some other process
> > opens  the  same  FIFO for writing, and vice versa. 
> > 
> > Remember, the GRC file is just converted to a Python program, in which
> > the different blocks are instantiated sequentially. Now, the problem
> > follows is that you can't even initialize the file source if the file
> > sink doesn't finish initializing, or the other way around, whichever
> > comes first.
> > 
> > Best regards,
> > Marcus
> > 
> > On Wed, 2018-06-20 at 10:52 +0000, Amirhosein naseri wrote:
> > > Hi everybody,
> > > 
> > > I have a simple GRC like this:
> > > 
> > > Signal Source ------> Throttle ------> File Sink
> > > File Source ------> Throttle -----> Qt Freq Sink
> > > 
> > > and i have a Piped File with mkfifo that GRC work with it. but when i run 
> > > GRC , it freezes ....... Why???
> > > 
> > > 
> > > Tnx??
> > 
> > > _______________________________________________
> > > Discuss-gnuradio mailing list
> > > address@hidden
> > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

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