#ifndef CLOCK_GETTIME_H #define CLOCK_GETTIME_H #include #ifndef CLOCKID_T #define CLOCKID_T typedef enum { CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_PROCESS_CPUTIME_ID, CLOCK_THREAD_CPUTIME_ID } clockid_t; #endif // CLOCKID_T struct timespec; static mach_timebase_info_data_t __clock_gettime_inf; int clock_gettime(clockid_t clk_id, struct timespec *tp); #endif // CLOCK_GETTIME_H