05-16-2008
use free -m and/or brk
Hi,
You can get the system memory available by the command:
#free -m
Also if you want to know the memory available to any particular process, you can use Zero increment to the sbrk() system call. Check the man page for usage...
Happy programming...
Srini
Installers for Linux operating system
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LEARN ABOUT DEBIAN
rdsalloc
RDSALLOC(3) RDS PHYSICAL FUNCTIONS RDSALLOC(3)
NAME
rdsalloc - memory allocation function
ORIGIN
This software belongs to the ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Universite Pierre et Marie CURIE, in
Paris, France.
Web : http://asim.lip6.fr/recherche/alliance/
E-mail : alliance-users@asim.lip6.fr
SYNOPSYS
#include "rdsnnn.h"
char *rdsalloc( Size, Heap )
unsigned int Size;
char Heap;
PARAMETER
Size memory size to allocate
Heap takes the values RDS_ALLOC_BLOCK or RDS_ALLOC_HEAP (two defined constants).
DESCRIPTION
The rdsalloc function can do memory allocation by block or by heap. If the user wants to allocate by block, he sets the parameter Heap to
the constant RDS_ALLOC_BLOCK else, he wants to allocate by heap so the parameter Heap is set to RDS_ALLOC_HEAP. If rdsalloc is used with
the constant RDS_ALLOC_BLOCK then rdsalloc is used as standard language C function malloc(). If the user allocates by heap then : At the
first allocation of the block of size the parameter 'Size', a heap of size multiple of the block Size is allocated. When another allocation
of the same size is done then if the the heap isn't full then a pointer (of size='Size') is returned else a new heap is allocated and a
pointer returned. Like this, the user does really one allocation (he has many pointers) to minimize fragmentation. Heap allocation is use-
full if the user has to allocate many pointers of the same size (ex: rdsrec_list structure).
Note: Memory place allocated is set to NULL.
RETURN VALUE
pointer to the allocated memory is returned.
ERRORS
"Rds202: rdsalloc error, can't continue !"
it's impossible to allocate the memory size desired.
EXAMPLE
#include "rdsnnn.h"
main()
{
rdsrec_list *Rectangle;
rdsfig_list *Figure;
Rectangle =
(rdsrec_list *) rdsalloc (sizeof(rdsrec_list *),RDS_ALLOC_HEAP);
Figure =
(rdsfig_list *) rdsalloc (sizeof(rdsfig_list *),RDS_ALLOC_BLOCK);
}
SEE ALSO
librds, rdsfree
BUG REPORT
This tool is under development at the ASIM department of the LIP6 laboratory.
We need your feedback to improve documentation and tools.
ASIM
/LIP6 October 1, 1997 RDSALLOC(3)