memcheck/tests/memalign_test.c

   1
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4 #include <unistd.h>
   5 #include <assert.h>
   6
   7 int main ( void )
   8 {
   9   void* a[10];
  10   int i;
  11   unsigned long pszB = sysconf(_SC_PAGE_SIZE);
  12   assert(sizeof(long) == sizeof(void*));
  13   assert(pszB == 4096 || pszB == 16384 || pszB == 65536);
  14
  15   for (i = 0; i < 10; i++) {
  16     a[i] = valloc(11111 * (i+1));
  17     /* check valloc really is returning page-aligned memory */
  18     assert( (((unsigned long)(a[i])) % pszB) == 0 );
  19     //    printf("I acquire %p\n", a[i]);
  20   }
  21   for (i = 0; i < 10; i++) {
  22     //    printf("I release %p\n", a[i]);
  23     free(a[i]);
  24   }
  25   free(a[9]);
  26   return 0;
  27 }