1 #include <stdio.h> 2 #include "tests/sys_mman.h" 3 #include <stdlib.h> 4 #include <unistd.h> 5 6 int main() 7 { 8 9 void *first = NULL; 10 void *last; 11 void *res; 12 13 while (1) { 14 res = mmap (NULL, 64 * 1024, 15 PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_32BIT, 16 -1, 0); 17 if (first == NULL) { 18 first = res; 19 if (first == (void *)-1) { 20 perror ("first mmap"); 21 exit (1); 22 } 23 fprintf(stderr, "first mmap : %p\n", first); 24 } 25 if (res == (void *)-1) { 26 fprintf(stderr, "last mmap ok: %p\n", last); 27 break; 28 } 29 last = res; 30 } 31 32 /* And now, retry without MAP_32BIT */ 33 res = mmap (NULL, 64 * 1024, 34 PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 35 -1, 0); 36 if (res == (void *)-1) { 37 perror ("retry mmap"); 38 exit (1); 39 } 40 fprintf(stderr, "retry mmap ok: %p\n", res); 41 42 return 0; 43 } 44
