I've been scratching my brains here a bit. Is there an easy way to get
access to the shell (bash) from within a C program? I left my KR at
home...
My googling has not particularly enlightened me, either...
I'd like to run the equivalent of the command $ ulimit -s hard
I need to do this because
On 6/2/08, Labitt, Bruce [EMAIL PROTECTED] wrote:
I've been scratching my brains here a bit. Is there an easy way to get
access to the shell (bash) from within a C program? I left my KR at
home...
My googling has not particularly enlightened me, either...
I'd like to run the equivalent of
Come to think of it, it'd probably just be easier to run ulimit before
you run the C program.
David Berube
Berube Consulting
[EMAIL PROTECTED]
(603)-485-9622
http://www.berubeconsulting.com/
Thomas Charron wrote:
On 6/2/08, Labitt, Bruce [EMAIL PROTECTED] wrote:
I've been scratching my brains
On Mon, Jun 2, 2008 at 11:19 AM, Labitt, Bruce
[EMAIL PROTECTED] wrote:
I've been scratching my brains here a bit. Is there an easy way to get
access to the shell (bash) from within a C program?
The system(3) standard library function will let you pass a command
to the OS for it to run.
One usually uses the 'system(3)' function to execute shell commands.
However, this probably won't work in your case because executing 'ulimit
-s hard', will be executed in a subshell (because the system function
works this way).
You will have to use the ulimit function to change it for the
On Jun 2, 2008, at 12:11, Labitt, Bruce wrote:
a=getrlimit; //save current setting
ulimit// do what I want
setrlimit=a // restore setting
I think only sub-processes are going to be affected by your ulimit
call, so I'm not sure the [get,set]rlimit are even
-Original Message-
From: David J Berube [mailto:[EMAIL PROTECTED]
Sent: Monday, June 02, 2008 11:55 AM
To: Thomas Charron
Cc: Labitt, Bruce; Greater NH Linux User Group
Subject: Re: access bash from C program?
Come to think of it, it'd probably just be easier to run ulimit before
you run the C
On Monday, Jun 2nd 2008 at 11:54 -, quoth David J Berube:
=Come to think of it, it'd probably just be easier to run ulimit before
=you run the C program.
It's not clear that you can do that (but you *might* be right anyways).
from man 2 fork:
fork creates a child process that
If I understand the requirements all you need to do is feed
the appropriate ulimit command to the same instance of bash
that ultimately executes the program you're trying to run,
right? One simple approach sketched in pseudo-C would be:
system( /bin/bash -c 'yourUlimitCommandHere ;
On 6/2/08, Labitt, Bruce [EMAIL PROTECTED] wrote:
That is what I do now. I was wondering if there was a programmatic or
more elegant way...
The way that has been suggested would be roughly
a=getrlimit; //save current setting
ulimit// do what I want
setrlimit=a
On Mon, Jun 2, 2008 at 11:19 AM, Labitt, Bruce
[EMAIL PROTECTED] wrote:
I've been scratching my brains here a bit. Is there an easy way to get
access to the shell (bash) from within a C program? I left my KR at
home...
My googling has not particularly enlightened me, either...
I'd like to
Yes, that is what I wanted to do. I ran out of stack when doing large
FFTs.
-Bruce
-Original Message-
From: Thomas Charron [mailto:[EMAIL PROTECTED]
Sent: Monday, June 02, 2008 5:39 PM
To: Labitt, Bruce
Cc: Greater NH Linux User Group
Subject: Re: access bash from C program?
On Mon
On Mon, Jun 2, 2008 at 5:40 PM, Labitt, Bruce
[EMAIL PROTECTED] wrote:
Yes, that is what I wanted to do. I ran out of stack when doing large
FFTs.
Ok, then yes. getrlimit and setrlimit will work, using RLIMIT_STACK
as the resource parameter.
--
-- Thomas
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