#include <stdlib.h> #include <time.h> #include <sys/time.h> #include <mach/mach_time.h> #include <darwintest.h> #include <darwintest_utils.h> #define T_LOG_VERBOSE(...) #define timespec2nanosec(ts) ((uint64_t)((ts)->tv_sec) * NSEC_PER_SEC + (uint64_t)((ts)->tv_nsec)) T_DECL(mach_get_times, "mach_get_times()", T_META_CHECK_LEAKS(false), T_META_ALL_VALID_ARCHS(true)) { const int ITERATIONS = 500000 * dt_ncpu(); struct timespec gtod_ts; uint64_t last_absolute, last_continuous, last_gtod; T_QUIET; T_ASSERT_EQ(mach_get_times(&last_absolute, &last_continuous, >od_ts), KERN_SUCCESS, NULL); last_gtod = timespec2nanosec(>od_ts); for (int i = 0; i < ITERATIONS; i++) { uint64_t absolute, continuous, gtod; T_QUIET; T_ASSERT_EQ(mach_get_times(&absolute, &continuous, >od_ts), KERN_SUCCESS, NULL); gtod = timespec2nanosec(>od_ts); T_LOG_VERBOSE("[%d] abs: %llu.%09llu(+%llu)\tcont: %llu.%09llu(+%llu)\tgtod:%llu.%09llu(+%llu)", i, absolute / NSEC_PER_SEC, absolute % NSEC_PER_SEC, absolute - last_absolute, continuous / NSEC_PER_SEC, continuous % NSEC_PER_SEC, continuous - last_continuous, gtod / NSEC_PER_SEC, gtod % NSEC_PER_SEC, gtod - last_gtod); T_QUIET; T_EXPECT_EQ(absolute - last_absolute, continuous - last_continuous, NULL); int64_t gtod_diff = (int64_t)gtod - (int64_t)last_gtod; T_QUIET; T_ASSERT_LE((uint64_t)llabs(gtod_diff), NSEC_PER_SEC, NULL); last_absolute = absolute; last_continuous = continuous; last_gtod = gtod; gtod_ts.tv_sec = 0; gtod_ts.tv_nsec = 0; } }