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A Call-Tree Generator For C Programs

, October 01, 1991

October 1991/A Call-Tree Generator For C Programs/Listing 4

Listing 4

#include <stdio.h>
#include "c_calls.h"

void print_calls(LIST list, const char *name, int depth, LIST *fcns)

Print out the name of the current fcn, and recursively print the names
of all fcns called by the current fcn (i.e. "expand" the current fcn).

LIST tmp;
int i;

for (i = 1; i <= depth; i++)
    printf("%1d   ", (i - 1) % 10);  /* Print name of current fcn. */

if (find_cell{*fcns, name) != NULL)   /* Don't continue recursive call. */
    printf("%s...\n", name);
    printf("%s\n", name);
    /* Save the name of the current fcn to avoid infinite expansion. */
    insert_cell(fcns, name);
    /* Print out names of all fcns called by the current fcn. */
    tmp = find_cell(list, name);
    for (tmp = tmp->calls; tmp != NULL; tmp = tmp->next)
        print_calls(list, tmp->name, depth + 1, fcns);

    /* Delete name of current fcn after completely expanding it. */
    delete_cell(fcns, name);

void print_all_calls(LIST list)

/* Print the fcn call tree. */

LIST tmp1, tmp2, fcns = NULL;

for (tmp1 = list; tmp1 != NULL; tmp1 = tmp1->next)
    print_calls(list, tmp1->name, 0, &fcns);
    printf("\n%s is called by:\n", tmp1->name);
    for (tmp2 = tmp1->called_from; tmp2 != NULL; tmp2 = tmp2->next)
        printf(" %s\n", tmp2->name);
/* End of File */

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