• C

How can I know how much memory my process uses?

I'm runing a program that uses a lot of memory. How can I know how much memory does it use.
I would like to print the amount of memory it uses before aborting the porgram due to lack of memory.

Thanks
rchcAsked:
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Sys_ProgCommented:
What platform r u on
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rchcAuthor Commented:
I run on Solaris 5.8 or linux
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Sys_ProgCommented:
I think you should keep track of your dynamic memory allocation functions - malloc, calloc, free, realloc etc

Also,
Have a look at this site

 http://www.dmalloc.com

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Sys_ProgCommented:
A similar question was previously asked

here's a good discussion for the same

http://www-level3.experts-exchange.com/Operating_Systems/Unix/Q_20727263.html

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rchcAuthor Commented:
My code is a legacy one with thousands of lines. I can't keep track of each allocation.
I'm seeking a function that can tell me the amounr of memory allocated and or the free memory.
Is there such a function?
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mtmikeCommented:
Use getrusage() to get the data size of the process or mallinfo() to get memory allocator statistics.
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Sys_ProgCommented:
As I said, the link on EE would be helpful
I am listing one of the solutions from there

Say u are using malloc for dynamic allocation

then just do this

#define malloc malloc_wrapper

malloc_wrapper ( same_arguments_as_malloc )
{
     /* do the accounting */
     malloc ( ... );
     return ...;
}
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