Vorher:

Each sample counts as 0.01 seconds.
% cumulative self self total
time seconds seconds calls us/call us/call name
100.16 0.01 0.01 6268 1.60 1.60 __join_together

100,16% der Zeit verbringt das Programm mit __join_together
Zeilennummern

    1 static char *__join_together(char *a, char *b, int len_b)
    2 {
    3   int len = len_b+1;
    4   int len_a = 0;
    5   int i;
    6   char *txt;
    7 
    8   if (a != NULL)
    9     len_a = strlen(a);
   10 
   11   len += len_a;
   12 
   13   txt = malloc(sizeof(char)*len);
   14 
   15   for (i = 0; i < len_a; i++)
   16     txt[i] = a[i];
   17 
   18   for (i = 0; i < len_b; i++)
   19     txt[i+len_a] = b[i];
   20 
   21   txt[len-1] = '\0';
   22 
   23   if (a != NULL)
   24     free(a);
   25 
   26   return txt;
   27 }

Nacher:

% cumulative self self total
time seconds seconds calls Ts/call Ts/call name
0.00 0.00 0.00 6598 0.00 0.00 __join_together

0% der Zeit wird fuer __join_together benoetigt (naja, gerundet ...)
Zeilennummern

    1 static char *__join_together(char *a, char *b, int len_b)
    2 {
    3   int len_a = 0;
    4   int i;
    5   char *new;
    6 
    7   if (a != NULL)
    8     len_a += strlen(a);
    9 
   10   new = realloc(a, len_b+1+len_a);
   11 
   12   if (new != NULL)
   13     for (i = 0; i < len_b; i++)
   14       new[i+len_a] = b[i];
   15 
   16 
   17   new[len_a+len_b] = '\0';
   18 
   19   return new;
   20 }