t/stest.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <assert.h>
   4
   5 #include "../smalloc.h"
   6 #include "../flist.h"
   7 #include "debug.h"
   8
   9 #define MAGIC1  0xa9b1c8d2
  10 #define MAGIC2  0xf0a1e9b3
  11
  12 #define LOOPS   32
  13
  14 struct elem {
  15         unsigned int magic1;
  16         struct flist_head list;
  17         unsigned int magic2;
  18 };
  19
  20 FLIST_HEAD(list);
  21
  22 static int do_rand_allocs(void)
  23 {
  24         unsigned int size, nr, rounds = 0;
  25         unsigned long total;
  26         struct elem *e;
  27
  28         while (rounds++ < LOOPS) {
  29 #ifdef STEST_SEED
  30                 srand(MAGIC1);
  31 #endif
  32                 nr = total = 0;
  33                 while (total < 128*1024*1024UL) {
  34                         size = 8 * sizeof(struct elem) + (int) (999.0 * (rand() / (RAND_MAX + 1.0)));
  35                         e = smalloc(size);
  36                         if (!e) {
  37                                 printf("fail at %lu, size %u\n", total, size);
  38                                 break;
  39                         }
  40                         e->magic1 = MAGIC1;
  41                         e->magic2 = MAGIC2;
  42                         total += size;
  43                         flist_add_tail(&e->list, &list);
  44                         nr++;
  45                 }
  46
  47                 printf("Got items: %u\n", nr);
  48
  49                 while (!flist_empty(&list)) {
  50                         e = flist_entry(list.next, struct elem, list);
  51                         assert(e->magic1 == MAGIC1);
  52                         assert(e->magic2 == MAGIC2);
  53                         flist_del(&e->list);
  54                         sfree(e);
  55                 }
  56         }
  57
  58         return 0;
  59 }
  60
  61 static int do_specific_alloc(unsigned long size)
  62 {
  63         void *ptr;
  64
  65         ptr = smalloc(size);
  66         sfree(ptr);
  67         return 0;
  68 }
  69
  70 int main(int argc, char *argv[])
  71 {
  72         sinit();
  73         debug_init();
  74
  75         do_rand_allocs();
  76
  77         /* smalloc bug, commit 271067a6 */
  78         do_specific_alloc(671386584);
  79
  80         scleanup();
  81         return 0;
  82 }