tools/tests/darwintests/mach_boottime_usec.c

   1 #include <stdlib.h>
   2 #include <time.h>
   3 #include <sys/time.h>
   4 #include <sys/types.h>
   5 #include <sys/sysctl.h>
   6 #include <mach/mach_time.h>
   7
   8 #include <darwintest.h>
   9
  10 T_DECL(mach_boottime_usec, "mach_boottime_usec()",
  11                 T_META_ALL_VALID_ARCHS(true), T_META_LTEPHASE(LTE_POSTINIT))
  12 {
  13         uint64_t bt_usec = mach_boottime_usec();
  14
  15         struct timeval bt_tv;
  16         size_t len = sizeof(bt_tv);
  17         T_ASSERT_POSIX_SUCCESS(sysctlbyname("kern.boottime", &bt_tv, &len, NULL, 0), NULL);
  18
  19         T_EXPECT_EQ((uint64_t)bt_tv.tv_sec * USEC_PER_SEC + (uint64_t)bt_tv.tv_usec, bt_usec, NULL);
  20 }