extend stack size in c++ under the linux platform

Question

1.00/5 (3 votes)

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how can i extend the stack size from the command line
please compare this code

C

#include<stdio.h>
#define MAX_SOLS  25000000
#define MAX_COMBS 15000000
#define MAX_GRPS 1000
#define MAX_GRP_SIZE 3500
#define CONST_MAX_NUM_STRINGS 20
#define CONST_MAX_INPUT_STRING_LENGTH 600
#define CONST_MAX_MOTIF_STRING_LENGTH 19
#define CONST_MAX_MOTIF_STRING_COMPACT_LENGTH 6
#define CONST_MAX_HAMMING_DIST 7
int MinTable[CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][2];
int CombTable1_1[CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][2];
int CombTable1_2[CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][2];
int CombTable1_3[CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH +1][2];
char comb[CONST_MAX_MOTIF_STRING_LENGTH + 1];
char num_array[CONST_MAX_MOTIF_STRING_LENGTH + 1];
char dir[CONST_MAX_MOTIF_STRING_LENGTH + 1];
char dir_initial[CONST_MAX_MOTIF_STRING_LENGTH + 1];
char cur_perm[CONST_MAX_MOTIF_STRING_LENGTH + 1];

// Global variables for the group calculation
char grp_desc[MAX_GRPS][4];
int grp_index[CONST_MAX_MOTIF_STRING_LENGTH][CONST_MAX_MOTIF_STRING_LENGTH][CONST_MAX_MOTIF_STRING_LENGTH][CONST_MAX_MOTIF_STRING_LENGTH];
char tpos1[MAX_GRPS][MAX_GRP_SIZE][5][CONST_MAX_MOTIF_STRING_LENGTH];
int grp_strs[MAX_GRPS][MAX_GRP_SIZE][6];
int grp_counter[MAX_GRPS];
int tot_grps = 1;
int main(){

	printf("OK \n\n");

	return 0;
}

and the code

C

#include<stdio.h>
#define MAX_SOLS  25000000
#define MAX_COMBS 15000000
#define MAX_GRPS 1000
#define MAX_GRP_SIZE 3500
#define CONST_MAX_NUM_STRINGS 20
#define CONST_MAX_INPUT_STRING_LENGTH 600
#define CONST_MAX_MOTIF_STRING_LENGTH 19
#define CONST_MAX_MOTIF_STRING_COMPACT_LENGTH 6
#define CONST_MAX_HAMMING_DIST 7
int MinTable[CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][2];
int CombTable1_1[CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][2];
int CombTable1_2[CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][2];
int CombTable1_3[CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH +1][2];
char comb[CONST_MAX_MOTIF_STRING_LENGTH + 1];
char num_array[CONST_MAX_MOTIF_STRING_LENGTH + 1];
char dir[CONST_MAX_MOTIF_STRING_LENGTH + 1];
char dir_initial[CONST_MAX_MOTIF_STRING_LENGTH + 1];
char cur_perm[CONST_MAX_MOTIF_STRING_LENGTH + 1];

// Global variables for the group calculation
char grp_desc[MAX_GRPS][4];
int grp_index[CONST_MAX_MOTIF_STRING_LENGTH][CONST_MAX_MOTIF_STRING_LENGTH][CONST_MAX_MOTIF_STRING_LENGTH][CONST_MAX_MOTIF_STRING_LENGTH];
char tpos1[MAX_GRPS][MAX_GRP_SIZE][5][CONST_MAX_MOTIF_STRING_LENGTH];
int grp_strs[MAX_GRPS][MAX_GRP_SIZE][6];
int grp_counter[MAX_GRPS];
int tot_grps = 1;
int main(){
	int MinTable[CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][2];
	int CombTable1_1[CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][2];
	int CombTable1_2[CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][2];
	int CombTable1_3[CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH + 1][CONST_MAX_MOTIF_STRING_LENGTH +1][2];
	char comb[CONST_MAX_MOTIF_STRING_LENGTH + 1];
	char num_array[CONST_MAX_MOTIF_STRING_LENGTH + 1];
	char dir[CONST_MAX_MOTIF_STRING_LENGTH + 1];
	char dir_initial[CONST_MAX_MOTIF_STRING_LENGTH + 1];
	char cur_perm[CONST_MAX_MOTIF_STRING_LENGTH + 1];

	// Global variables for the group calculation
	char grp_desc[MAX_GRPS][4];
	int grp_index[CONST_MAX_MOTIF_STRING_LENGTH][CONST_MAX_MOTIF_STRING_LENGTH][CONST_MAX_MOTIF_STRING_LENGTH][CONST_MAX_MOTIF_STRING_LENGTH];
	char tpos1[MAX_GRPS][MAX_GRP_SIZE][5][CONST_MAX_MOTIF_STRING_LENGTH];
	int grp_strs[MAX_GRPS][MAX_GRP_SIZE][6];
	int grp_counter[MAX_GRPS];
	int tot_grps = 1;

	printf("OK \n\n");

	return 0;
}

the first code working well and the second code face the run time error (Segmentation Fault)
i think the error from the stack overflow
how can extend the stack size?

[EDIT] Added <pre> tags for better readability - Code-o-mat [/EDIT]

Posted 5-May-12 11:29am

mostafa_bioinfo

Updated 5-May-12 11:45am

Code-o-mat

v2

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Comments

Code-o-mat 5-May-12 17:47pm

Why not allocate those huge buffers dynamically?

mostafa_bioinfo 5-May-12 17:52pm

is it solve the problem?
please send the deceleration for these arrays dynamically.

Code-o-mat 6-May-12 4:06am

Well, i won't go into trying to decypher your code and rewrite it, but here's one general way of doing it:

Instead of this:
int apple[2][3][4];
apple[1][2][3] = 10;

you can do e.g. this:
int *papple = new int[2 * 3 * 4];
typedef int TApple[2][3][4];
TApple &dapple = *(TApple *)papple;
dapple[1][2][3] = 10;
delete []papple; //don't forget to delete the dynamically allocated stuff
//when you are done with it

You could easily write a macro to reduce code size and the amount of typing to do it.

mostafa_bioinfo 6-May-12 15:03pm

Thanks a lot for your response.
how can i send this arrays as a parameter of function?
plz the function definition and the function call

mostafa_bioinfo 6-May-12 20:05pm

plz the same way can be used for the array of dem 4 if now what is the difference
char *tpo = new char [MAX_GRPS * MAX_GRP_SIZE * 5 * CONST_MAX_MOTIF_STRING_LENGTH]; typedef char tpos[MAX_GRPS][MAX_GRP_SIZE][5][CONST_MAX_MOTIF_STRING_LENGTH];
tpos &tpos1 = *(tpos *)tpo;

delete []tpo;

Code-o-mat 7-May-12 14:21pm

This question i don't understand, sorry.

mostafa_bioinfo 7-May-12 15:38pm

i mean
how can i declare the array of dimensions 4 in that way.
int x[2][3][4][5];

Code-o-mat 7-May-12 15:43pm

Doesn't that work? I mean what you wrote there with "char *tpo =..."?

Code-o-mat 7-May-12 14:20pm

Staying by the example above, a function could look like this:

void AFunction(TApple &x)
{
x[1][2][3] = 10;
}

and you would call it like this:
AFunction(dapple);

Sergey Chepurin 5-May-12 18:15pm

Use setrlimit() for RLIMIT_STACK resource. See getrlimit, getrusage, setrlimit[^]

Chuck O'Toole 5-May-12 19:16pm

You can either extend the stack as Sergey suggested or you can, as you've already demonstrated, declare the arrays statically, outside the scope of main(). If you do it that way, there are no changes to your code required, you don't need to fiddle with the stack, and you don't need to wait for someone to write the dynamic allocation code for you.

mostafa_bioinfo 5-May-12 19:24pm

but i need the deceleration inside the main function

Chuck O'Toole 5-May-12 19:40pm

Why? Will you get a bad grade on your homework?

And if you are so set on doing that, why not use the solution given to you by Sergey? What's wrong with that?

Philippe Mori 5-May-12 19:20pm

Reason for my vote of 1
I don't know what you are trying to do but such code does not make much sense. Why using so much multilevel array.

Sergey Alexandrovich Kryukov 5-May-12 21:57pm

Reason for my vote of 1
I agree with Philippe Mori.

Also, I feel really bad attitude. Advice to fix things are good. OP needs to be reasonable.

--SA

Sandeep Mewara 6-May-12 1:46am

Not clear.

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