syscall.h

 
#pragma once
 
#ifdef  __cplusplus
extern  "C" {
#endif
 
#include <sys/types.h>
 
#define CLOCK_REALTIME_COARSE     CLOCK_REALTIME
#define CLOCK_MONOTONIC           (0x20)
#define CLOCK_MONOTONIC_COARSE    (CLOCK_MONOTONIC+1)
#define CLOCK_MONOTONIC_RAW       (CLOCK_MONOTONIC+2)
#define CLOCK_BOOTTIME            (CLOCK_MONOTONIC+3)
#define CLOCK_PROCESS_CPUTIME_ID  (0x30)
#define CLOCK_THREAD_CPUTIME_ID   (0x31)
 
extern int clock_getres(clockid_t clk_id, struct timespec *res);
 
extern int clock_gettime(clockid_t clk_id, struct timespec *tp);
 
extern int clock_settime(clockid_t clk_id, const struct timespec *tp);
 
extern int usleep(useconds_t useconds);
 
#ifdef  __cplusplus
}
#endif