experiment.c

   1 #include <time.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <assert.h>
   5 #include <errno.h>
   6 #include <inttypes.h>
   7
   8 #include <libvirt/libvirt.h>
   9
  10
  11 virConnectPtr conn = NULL; /* the hypervisor connection */
  12
  13 int main(int argc, char*argv[]) {
  14     int error;
  15     int ret = 1;
  16
  17     /* NULL means connect to local Xen hypervisor */
  18     conn = virConnectOpenReadOnly(NULL);
  19     if (conn == NULL) {
  20         fprintf(stderr, "Failed to connect to hypervisor\n");
  21     }
  22
  23     if (argc == 2) {
  24         unsigned long long required = strtoul(argv[1], (char **) NULL, 10);
  25         unsigned long long free = virNodeGetFreeMemory(conn);
  26         if (errno != ERANGE)
  27             printf("%f\n", (float)required / (float)free);
  28     }
  29
  30         printf("%lu\n", virNodeGetFreeMemory(conn));
  31
  32     virDomainPtr domu = virDomainLookupByName(conn, "klant1_testdomein");
  33     printf("%lu\n", virDomainGetMaxMemory(domu));
  34     virDomainFree(domu);
  35
  36
  37     virConnectClose(conn);
  38
  39     return ret;
  40 }