tools/perf/perf-read-vdso.c

   1 #include <stdio.h>
   2 #include <string.h>
   3
   4 #define VDSO__MAP_NAME "[vdso]"
   5
   6 /*
   7  * Include definition of find_vdso_map() also used in util/vdso.c for
   8  * building perf.
   9  */
  10 #include "util/find-vdso-map.c"
  11
  12 int main(void)
  13 {
  14         void *start, *end;
  15         size_t size, written;
  16
  17         if (find_vdso_map(&start, &end))
  18                 return 1;
  19
  20         size = end - start;
  21
  22         while (size) {
  23                 written = fwrite(start, 1, size, stdout);
  24                 if (!written)
  25                         return 1;
  26                 start += written;
  27                 size -= written;
  28         }
  29
  30         if (fflush(stdout))
  31                 return 1;
  32
  33         return 0;
  34 }