Dear thx for your reply
even by using stdbuf the problem remains the same $ stdbuf -i 0 -o 0 cat > in I think the problem must be solved from gnuradio because if I run two terminals in first terminal: $ cat > in second terminal: $ cat in then whatever I write in the first terminal is sent to the second terminal after pressing enter. while if instead of the second terminal I used gnuradio with the following flowgraph in gnuradio : file source (in) --> stream to tagged stream --> throttle --> tagged stream to pdu --> message debug the data are not sent till I press ctrl c. thanks again for your help, but my problem is not solved if there is any one can help me Best regards <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Mon, Oct 7, 2019 at 7:06 PM <discuss-gnuradio-requ...@gnu.org> wrote: > Send Discuss-gnuradio mailing list submissions to > discuss-gnuradio@gnu.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > or, via email, send a message with subject or body 'help' to > discuss-gnuradio-requ...@gnu.org > > You can reach the person managing the list at > discuss-gnuradio-ow...@gnu.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Discuss-gnuradio digest..." > > > Today's Topics: > > 1. fifo / file source (ali mokdad) > 2. Re: fifo / file source (Müller) > 3. Re: fifo / file source (ali mokdad) > 4. Re: fifo / file source (N. Benes) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 7 Oct 2019 13:41:47 +0300 > From: ali mokdad <aa.mokdad...@gmail.com> > To: discuss-gnuradio@gnu.org > Subject: [Discuss-gnuradio] fifo / file source > Message-ID: > < > cacn2bhndhnwhkddjfojnm1pgps+nrhdudm7zyeaa6abptke...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Dear all > > I tested the following > > 1- in terminal, I created a fifo file by: mkfifo in > 2- in terminal, I run: cat > in > 3- in gnuradio i run : file source (in) --> stream to tagged stream --> > tagged stream to pdu --> message debug > 4- in terminal, I write and press enter nothing is sent, only if I press > ctrl c the all the data written in the terminal are sent to the message > debug. > > How can I solve this problem? > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > https://lists.gnu.org/archive/html/discuss-gnuradio/attachments/20191007/c17ad733/attachment.html > > > > ------------------------------ > > Message: 2 > Date: Mon, 7 Oct 2019 11:11:52 +0000 > From: Müller, Marcus (CEL) <muel...@kit.edu> > To: "discuss-gnuradio@gnu.org" <discuss-gnuradio@gnu.org>, > "aa.mokdad...@gmail.com" <aa.mokdad...@gmail.com> > Subject: Re: [Discuss-gnuradio] fifo / file source > Message-ID: <5878b0c98107f9bf6ef01c5853d135ab80888ef5.ca...@kit.edu> > Content-Type: text/plain; charset="utf-8" > > Hi Ali, > > it's not quite certain which program you run in that terminal, but: > File I/O is usually buffered, and this sounds like the data is never > written to your FIFO before you exit your terminal program. > > Solution: Use a terminal program that doesn't buffer or flushes > regularly. > > Best regards, > Marcus > > On Mon, 2019-10-07 at 13:41 +0300, ali mokdad wrote: > > Dear all > > > > I tested the following > > > > 1- in terminal, I created a fifo file by: mkfifo in > > 2- in terminal, I run: cat > in > > 3- in gnuradio i run : file source (in) --> stream to tagged stream --> > tagged stream to pdu --> message debug > > 4- in terminal, I write and press enter nothing is sent, only if I press > ctrl c the all the data written in the terminal are sent to the message > debug. > > > > How can I solve this problem? > > > > > > > > _______________________________________________ > > Discuss-gnuradio mailing list > > Discuss-gnuradio@gnu.org > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: smime.p7s > Type: application/x-pkcs7-signature > Size: 6582 bytes > Desc: not available > URL: < > https://lists.gnu.org/archive/html/discuss-gnuradio/attachments/20191007/5f1b0f0b/attachment.bin > > > > ------------------------------ > > Message: 3 > Date: Mon, 7 Oct 2019 14:34:49 +0300 > From: ali mokdad <aa.mokdad...@gmail.com> > To: Müller, Marcus (CEL) <muel...@kit.edu>, discuss-gnuradio@gnu.org > Subject: Re: [Discuss-gnuradio] fifo / file source > Message-ID: > <CACn2bH= > 4ejotfeztrft+prmezezlew0kwh8-rdigy3ou83k...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Thx for your reply > > "it's not quite certain which program you run in that terminal" > I just wrote cat > in > even I run a .c file in the .c file I opened a file and the data are not > sent only when I close the file. > do you know a special program I can test? > > > On Mon, Oct 7, 2019 at 2:11 PM Müller, Marcus (CEL) <muel...@kit.edu> > wrote: > > > Hi Ali, > > > > it's not quite certain which program you run in that terminal, but: > > File I/O is usually buffered, and this sounds like the data is never > > written to your FIFO before you exit your terminal program. > > > > Solution: Use a terminal program that doesn't buffer or flushes > > regularly. > > > > Best regards, > > Marcus > > > > On Mon, 2019-10-07 at 13:41 +0300, ali mokdad wrote: > > > Dear all > > > > > > I tested the following > > > > > > 1- in terminal, I created a fifo file by: mkfifo in > > > 2- in terminal, I run: cat > in > > > 3- in gnuradio i run : file source (in) --> stream to tagged stream > --> > > tagged stream to pdu --> message debug > > > 4- in terminal, I write and press enter nothing is sent, only if I > press > > ctrl c the all the data written in the terminal are sent to the message > > debug. > > > > > > How can I solve this problem? > > > > > > > > > > > > _______________________________________________ > > > Discuss-gnuradio mailing list > > > Discuss-gnuradio@gnu.org > > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > https://lists.gnu.org/archive/html/discuss-gnuradio/attachments/20191007/52fa06fc/attachment.html > > > > ------------------------------ > > Message: 4 > Date: Mon, 07 Oct 2019 13:18:00 +0000 > From: "N. Benes" <nbe...@eso.org> > To: discuss-gnuradio@gnu.org > Subject: Re: [Discuss-gnuradio] fifo / file source > Message-ID: <ec024940-c0ad-7cc4-0636-179b61ba5...@eso.org> > Content-Type: text/plain; charset=utf-8 > > ali mokdad: > > do you know a special program I can test? > > "stdbuf" could be of help here. But beware that the input stream into > "cat" may still be (line) buffered because of bash. > > Example: > $ stdbuf -i 0 -o 0 cat > in > > Cheers! > > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > ------------------------------ > > End of Discuss-gnuradio Digest, Vol 204, Issue 6 > ************************************************ > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
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