* How to determine the start of DATA segment
@ 2006-03-30 16:37 Ram Gupta
2006-03-30 16:52 ` Jon DeVree
2006-03-30 17:31 ` Phillip Susi
0 siblings, 2 replies; 4+ messages in thread
From: Ram Gupta @ 2006-03-30 16:37 UTC (permalink / raw)
To: linux mailing-list
Is there a system call or library function which a process can use to
determine the start of its data segment . I need to know the start of
the data segment so that process does not cross its DATA limit. Using
this information & sbrk it knows how much data space is already used &
how much it can grow further without crossing the limit.
Thanks
Ram Gupta
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: How to determine the start of DATA segment
2006-03-30 16:37 How to determine the start of DATA segment Ram Gupta
@ 2006-03-30 16:52 ` Jon DeVree
2006-03-30 17:12 ` Ram Gupta
2006-03-30 17:31 ` Phillip Susi
1 sibling, 1 reply; 4+ messages in thread
From: Jon DeVree @ 2006-03-30 16:52 UTC (permalink / raw)
To: linux mailing-list
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On Thu, Mar 30, 2006 at 10:37:25AM -0600, Ram Gupta wrote:
> Is there a system call or library function which a process can use to
> determine the start of its data segment . I need to know the start of
> the data segment so that process does not cross its DATA limit. Using
> this information & sbrk it knows how much data space is already used &
> how much it can grow further without crossing the limit.
I think getrlimit() might be what you are looking for.
--
Jon
"RISC architecture is gonna change everything." -Kate Libby
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: How to determine the start of DATA segment
2006-03-30 16:52 ` Jon DeVree
@ 2006-03-30 17:12 ` Ram Gupta
0 siblings, 0 replies; 4+ messages in thread
From: Ram Gupta @ 2006-03-30 17:12 UTC (permalink / raw)
To: Jon DeVree; +Cc: linux mailing-list
On 3/30/06, Jon DeVree <jadevree@mtu.edu> wrote:
.
>
> I think getrlimit() might be what you are looking for.
> --
> Jon
getrlimit is useful to know the limit set of a resource by setrlimit.
But I am interested in getting the start of DATA segment
Regards
Ram Gupta
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: How to determine the start of DATA segment
2006-03-30 16:37 How to determine the start of DATA segment Ram Gupta
2006-03-30 16:52 ` Jon DeVree
@ 2006-03-30 17:31 ` Phillip Susi
1 sibling, 0 replies; 4+ messages in thread
From: Phillip Susi @ 2006-03-30 17:31 UTC (permalink / raw)
To: Ram Gupta; +Cc: linux mailing-list
The program's DATA segment is of fixed size as link time. It contains
all of the initialized variables your program has. It does not grow at
runtime. You can find out how large it is by looking at the output of
objdump. Maybe you meant to ask what is the upper limit on the size of
your heap?
Ram Gupta wrote:
> Is there a system call or library function which a process can use to
> determine the start of its data segment . I need to know the start of
> the data segment so that process does not cross its DATA limit. Using
> this information & sbrk it knows how much data space is already used &
> how much it can grow further without crossing the limit.
>
> Thanks
> Ram Gupta
^ permalink raw reply [flat|nested] 4+ messages in thread
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2006-03-30 16:37 How to determine the start of DATA segment Ram Gupta
2006-03-30 16:52 ` Jon DeVree
2006-03-30 17:12 ` Ram Gupta
2006-03-30 17:31 ` Phillip Susi
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