Doing two things at once

eam · 08-03-2004, 10:22 PM

I want to make a console program able to output text and do other things while a user is typing input. I'm going to use ncurses for the display. How could I do two things at the same time?

**Thantos** · 08-03-2004, 10:27 PM

off the top of my head
You can use select() on stdin to see if there is any data to be processed

jmgk · 08-03-2004, 10:51 PM

hi eam,

you should take a look in fork() and clone() linux syscalls. they work similar to w32 threads.

jmgk

eam · 08-03-2004, 10:52 PM

How would I do that?

jmgk · 08-03-2004, 11:07 PM

eam,

already tried http://www.google.com/search?q=linux+fork+syscall ?

or the linux secret command "man"?

jmgk

**Thantos** · 08-03-2004, 11:09 PM

Actually fork() and clone() are NOT like windows threads. fork() creates another process with its own memory space. If you want multi threaded applications you need to look into pthreads

eam · 08-03-2004, 11:51 PM

Guess I have some reading to do then, thanks for pointing me in the right direction.

chrismiceli · 08-04-2004, 10:10 PM

Not to try and say that you are wrong Thantos, just to shed a little more light on the subject. Threads in linux are implemented as their own processes. They just so happen to have the same pid and their address space pointer points to the address space of the other process it is a thread of

. They are called lightweight processes.

08-03-2004, 10:22 PM	#1
eam Registered User Join Date: Oct 2003 Posts: 53	Doing two things at once I want to make a console program able to output text and do other things while a user is typing input. I'm going to use ncurses for the display. How could I do two things at the same time?
eam is offline

08-03-2004, 10:27 PM	#2
Thantos & the hat of GPL slaying Join Date: Sep 2001 Posts: 5,732	off the top of my head You can use select() on stdin to see if there is any data to be processed
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08-03-2004, 10:51 PM	#3
jmgk Code Ripper Join Date: Jun 2004 Posts: 30	hi eam, you should take a look in fork() and clone() linux syscalls. they work similar to w32 threads. jmgk
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08-03-2004, 10:52 PM	#4
eam Registered User Join Date: Oct 2003 Posts: 53	How would I do that?
eam is offline

08-03-2004, 11:07 PM	#5
jmgk Code Ripper Join Date: Jun 2004 Posts: 30	eam, already tried http://www.google.com/search?q=linux+fork+syscall ? or the linux secret command "man"? jmgk
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08-03-2004, 11:09 PM	#6
Thantos & the hat of GPL slaying Join Date: Sep 2001 Posts: 5,732	Actually fork() and clone() are NOT like windows threads. fork() creates another process with its own memory space. If you want multi threaded applications you need to look into pthreads
Thantos is offline

08-03-2004, 11:51 PM	#7
eam Registered User Join Date: Oct 2003 Posts: 53	Guess I have some reading to do then, thanks for pointing me in the right direction.
eam is offline

08-04-2004, 10:10 PM	#8
chrismiceli Obsessed with C Join Date: Jan 2003 Posts: 501	Not to try and say that you are wrong Thantos, just to shed a little more light on the subject. Threads in linux are implemented as their own processes. They just so happen to have the same pid and their address space pointer points to the address space of the other process it is a thread of . They are called lightweight processes. __________________ Help populate a c/c++ help irc channel server: irc://irc.efnet.net channel: #c
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