deps/jemalloc/test/mremap.c

   1 #define JEMALLOC_MANGLE
   2 #include "jemalloc_test.h"
   3
   4 int
   5 main(void)
   6 {
   7         int ret, err;
   8         size_t sz, lg_chunk, chunksize, i;
   9         char *p, *q;
  10
  11         malloc_printf("Test begin\n");
  12
  13         sz = sizeof(lg_chunk);
  14         if ((err = mallctl("opt.lg_chunk", &lg_chunk, &sz, NULL, 0))) {
  15                 assert(err != ENOENT);
  16                 malloc_printf("%s(): Error in mallctl(): %s\n", __func__,
  17                     strerror(err));
  18                 ret = 1;
  19                 goto label_return;
  20         }
  21         chunksize = ((size_t)1U) << lg_chunk;
  22
  23         p = (char *)malloc(chunksize);
  24         if (p == NULL) {
  25                 malloc_printf("malloc(%zu) --> %p\n", chunksize, p);
  26                 ret = 1;
  27                 goto label_return;
  28         }
  29         memset(p, 'a', chunksize);
  30
  31         q = (char *)realloc(p, chunksize * 2);
  32         if (q == NULL) {
  33                 malloc_printf("realloc(%p, %zu) --> %p\n", p, chunksize * 2,
  34                     q);
  35                 ret = 1;
  36                 goto label_return;
  37         }
  38         for (i = 0; i < chunksize; i++) {
  39                 assert(q[i] == 'a');
  40         }
  41
  42         p = q;
  43
  44         q = (char *)realloc(p, chunksize);
  45         if (q == NULL) {
  46                 malloc_printf("realloc(%p, %zu) --> %p\n", p, chunksize, q);
  47                 ret = 1;
  48                 goto label_return;
  49         }
  50         for (i = 0; i < chunksize; i++) {
  51                 assert(q[i] == 'a');
  52         }
  53
  54         free(q);
  55
  56         ret = 0;
  57 label_return:
  58         malloc_printf("Test end\n");
  59         return (ret);
  60 }