tools/test/malloc/main.c

   1 /*
   2  * $DragonFly: src/tools/test/malloc/main.c,v 1.2 2003/11/07 14:38:38 eirikn Exp $
   3  */
   4
   5 #include <stdlib.h>
   6 #include <stdio.h>
   7 #include <unistd.h>
   8
   9 u_long NBUCKETS         = 2000;
  10 u_long NOPS             = 200000;
  11 u_long NSIZE            = (16*1024);
  12
  13 char **foo;
  14
  15 int
  16 main(int argc, char **argv)
  17 {
  18     int i,j,k;
  19
  20     if (argc > 1) NOPS     = strtoul(argv[1],0,0);
  21     if (argc > 2) NBUCKETS = strtoul(argv[2],0,0);
  22     if (argc > 3) NSIZE    = strtoul(argv[3],0,0);
  23     printf("BRK(0)=%x ",sbrk(0));
  24     foo = malloc (sizeof *foo * NBUCKETS);
  25     memset(foo,0,sizeof *foo * NBUCKETS);
  26     for (i = 1; i <= 4096; i+=i) {
  27         for (j = 0 ; j < 40960/i && j < NBUCKETS; j++) {
  28             foo[j] = malloc(i);
  29         }
  30         for (j = 0 ; j < 40960/i && j < NBUCKETS; j++) {
  31             free(foo[j]);
  32             foo[j] = 0;
  33         }
  34     }
  35
  36     for (i = 0 ; i < NOPS ; i++) {
  37         j = random() % NBUCKETS;
  38         k = random() % NSIZE;
  39         foo[j] = realloc(foo[j], k & 1 ? 0 : k);
  40         if (foo[j])
  41             foo[j][0] = 1;
  42     }
  43     printf("BRK(1)=%x ",sbrk(0));
  44     for (j = 0 ; j < NBUCKETS ; j++) {
  45         if (foo[j]) {
  46             free(foo[j]);
  47             foo[j] = 0;
  48         }
  49     }
  50     printf("BRK(2)=%x NOPS=%lu NBUCKETS=%lu NSIZE=%lu\n",
  51         sbrk(0),NOPS,NBUCKETS,NSIZE);
  52     return 0;
  53 }