1 #include <stdlib.h> 2 #include <time.h> 3 #include <sys/time.h> 4 #include <mach/mach_time.h> 5 6 #include <darwintest.h> 7 #include <darwintest_utils.h> 8 9 T_GLOBAL_META(T_META_RUN_CONCURRENTLY(true)); 10 11 #define T_LOG_VERBOSE(...) 12 13 #define timespec2nanosec(ts) ((uint64_t)((ts)->tv_sec) * NSEC_PER_SEC + (uint64_t)((ts)->tv_nsec)) 14 15 T_DECL(mach_get_times, "mach_get_times()", 16 T_META_CHECK_LEAKS(false), T_META_ALL_VALID_ARCHS(true)) 17 { 18 const int ITERATIONS = 500000 * dt_ncpu(); 19 struct timespec gtod_ts; 20 21 uint64_t last_absolute, last_continuous, last_gtod; 22 T_QUIET; T_ASSERT_EQ(mach_get_times(&last_absolute, &last_continuous, >od_ts), KERN_SUCCESS, NULL); 23 last_gtod = timespec2nanosec(>od_ts); 24 25 for (int i = 0; i < ITERATIONS; i++) { 26 uint64_t absolute, continuous, gtod; 27 T_QUIET; T_ASSERT_EQ(mach_get_times(&absolute, &continuous, >od_ts), KERN_SUCCESS, NULL); 28 gtod = timespec2nanosec(>od_ts); 29 30 T_LOG_VERBOSE("[%d] abs: %llu.%09llu(+%llu)\tcont: %llu.%09llu(+%llu)\tgtod:%llu.%09llu(+%llu)", i, 31 absolute / NSEC_PER_SEC, absolute % NSEC_PER_SEC, absolute - last_absolute, 32 continuous / NSEC_PER_SEC, continuous % NSEC_PER_SEC, continuous - last_continuous, 33 gtod / NSEC_PER_SEC, gtod % NSEC_PER_SEC, gtod - last_gtod); 34 35 T_QUIET; T_EXPECT_EQ(absolute - last_absolute, continuous - last_continuous, NULL); 36 37 int64_t gtod_diff = (int64_t)gtod - (int64_t)last_gtod; 38 T_QUIET; T_ASSERT_LE((uint64_t)llabs(gtod_diff), NSEC_PER_SEC, NULL); 39 40 last_absolute = absolute; 41 last_continuous = continuous; 42 last_gtod = gtod; 43 44 gtod_ts.tv_sec = 0; gtod_ts.tv_nsec = 0; 45 } 46 } 47