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 "../arch/arch.h"
   8 #include "debug.h"
   9
  10 #define MAGIC1  0xa9b1c8d2
  11 #define MAGIC2  0xf0a1e9b3
  12
  13 #define LOOPS   32
  14
  15 struct elem {
  16         unsigned int magic1;
  17         struct flist_head list;
  18         unsigned int magic2;
  19 };
  20
  21 FLIST_HEAD(list);
  22
  23 static int do_rand_allocs(void)
  24 {
  25         unsigned int size, nr, rounds = 0;
  26         unsigned long total;
  27         struct elem *e;
  28
  29         while (rounds++ < LOOPS) {
  30 #ifdef STEST_SEED
  31                 srand(MAGIC1);
  32 #endif
  33                 nr = total = 0;
  34                 while (total < 120*1024*1024UL) {
  35                         size = 8 * sizeof(struct elem) + (int) (999.0 * (rand() / (RAND_MAX + 1.0)));
  36                         e = smalloc(size);
  37                         if (!e) {
  38                                 printf("fail at %lu, size %u\n", total, size);
  39                                 break;
  40                         }
  41                         e->magic1 = MAGIC1;
  42                         e->magic2 = MAGIC2;
  43                         total += size;
  44                         flist_add_tail(&e->list, &list);
  45                         nr++;
  46                 }
  47
  48                 printf("Got items: %u\n", nr);
  49
  50                 while (!flist_empty(&list)) {
  51                         e = flist_entry(list.next, struct elem, list);
  52                         assert(e->magic1 == MAGIC1);
  53                         assert(e->magic2 == MAGIC2);
  54                         flist_del(&e->list);
  55                         sfree(e);
  56                 }
  57         }
  58
  59         return 0;
  60 }
  61
  62 static int do_specific_alloc(unsigned long size)
  63 {
  64         void *ptr;
  65
  66         ptr = smalloc(size);
  67         sfree(ptr);
  68         return 0;
  69 }
  70
  71 int main(int argc, char *argv[])
  72 {
  73         arch_init(argv);
  74         sinit();
  75         debug_init();
  76
  77         do_rand_allocs();
  78
  79         /* smalloc bug, commit 271067a6 */
  80         do_specific_alloc(671386584);
  81
  82         scleanup();
  83         return 0;
  84 }