I am running a program within another and reading the output. My problem
is that all outputs are delayed because of bufferring
Can I tell printf to print all outputs immediately and not buffer it
Thanks
Ram
4  8328 
In article <bt************@ID-166953.news.uni-berlin.de>,
Ramprasad A Padmanabhan <ra*******@netcore.co.in> wrote: I am running a program within another and reading the output. My problem
is that all outputs are delayed because of bufferring
Can I tell printf to print all outputs immediately and not buffer it
You can flush the output buffer of printf(), see: http://www.eskimo.com/~scs/C-faq/q12.4.html
Regards,
--
Rob van der Leek | rob(at)ricardis(dot)tudelft(dot)nl
Ricardishof 73-A | http://www.ricardis.tudelft.nl/~rob
2614 JE Delft, The Netherlands
+31 (0)6 155 244 60
On Mon, 12 Jan 2004 13:53:17 +0530, Ramprasad A Padmanabhan
<ra*******@netcore.co.in> wrote: I am running a program within another and reading the output. My problem
is that all outputs are delayed because of bufferring
Can I tell printf to print all outputs immediately and not buffer it
you can make 'stdout' unbuffered by using 'setvbuf()' with _IONBF flag.
For more into see 'man setvbuf'
--
Mohan
"A. J. Mohan Rao" <aj*********@fth7.siemens.de> wrote: On Mon, 12 Jan 2004 13:53:17 +0530, Ramprasad A Padmanabhan
<ra*******@netcore.co.in> wrote:
I am running a program within another and reading the output. My problem
is that all outputs are delayed because of bufferring
Can I tell printf to print all outputs immediately and not buffer it
you can make 'stdout' unbuffered by using 'setvbuf()' with _IONBF flag.
s/make/try to make/. There's no guarantee that it works. Even when
setvbuf() returns 0 (success), that only means that the C implementation
doesn't buffer stdout any more; the OS still might, and there might be
nothing you can do about it. But yes, setvbuf() is the function to try -
or setbuf(stdout, 0), which amounts to the same thing.
For more into see 'man setvbuf'
Or, indeed, your C book, which is more likely to be ISO-compatible.
Richard
"A. J. Mohan Rao" <aj*********@fth7.siemens.de> wrote: On Mon, 12 Jan 2004 13:53:17 +0530, Ramprasad A Padmanabhan
<ra*******@netcore.co.in> wrote:
I am running a program within another and reading the output. My problem
is that all outputs are delayed because of bufferring
Can I tell printf to print all outputs immediately and not buffer it
you can make 'stdout' unbuffered by using 'setvbuf()' with _IONBF flag.
For more into see 'man setvbuf'
Well, we're deep in implementation defined land here
[C99 7.19.3#3], so the suggested setvbuf call might
fail on some implementations.
Regards
--
Irrwahn Grausewitz (ir*******@freenet.de)
welcome to clc : http://www.ungerhu.com/jxh/clc.welcome.txt
clc faq-list : http://www.eskimo.com/~scs/C-faq/top.html
acllc-c++ faq : http://www.contrib.andrew.cmu.edu/~a...FAQ-acllc.html This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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