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kernel/linux-imx6_3.14.28/include/uapi/linux/time.h 1.55 KB
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  #ifndef _UAPI_LINUX_TIME_H
  #define _UAPI_LINUX_TIME_H
  
  #include <linux/types.h>
  
  
  #ifndef _STRUCT_TIMESPEC
  #define _STRUCT_TIMESPEC
  struct timespec {
  	__kernel_time_t	tv_sec;			/* seconds */
  	long		tv_nsec;		/* nanoseconds */
  };
  #endif
  
  struct timeval {
  	__kernel_time_t		tv_sec;		/* seconds */
  	__kernel_suseconds_t	tv_usec;	/* microseconds */
  };
  
  struct timezone {
  	int	tz_minuteswest;	/* minutes west of Greenwich */
  	int	tz_dsttime;	/* type of dst correction */
  };
  
  
  /*
   * Names of the interval timers, and structure
   * defining a timer setting:
   */
  #define	ITIMER_REAL		0
  #define	ITIMER_VIRTUAL		1
  #define	ITIMER_PROF		2
  
  struct itimerspec {
  	struct timespec it_interval;	/* timer period */
  	struct timespec it_value;	/* timer expiration */
  };
  
  struct itimerval {
  	struct timeval it_interval;	/* timer interval */
  	struct timeval it_value;	/* current value */
  };
  
  /*
   * The IDs of the various system clocks (for POSIX.1b interval timers):
   */
  #define CLOCK_REALTIME			0
  #define CLOCK_MONOTONIC			1
  #define CLOCK_PROCESS_CPUTIME_ID	2
  #define CLOCK_THREAD_CPUTIME_ID		3
  #define CLOCK_MONOTONIC_RAW		4
  #define CLOCK_REALTIME_COARSE		5
  #define CLOCK_MONOTONIC_COARSE		6
  #define CLOCK_BOOTTIME			7
  #define CLOCK_REALTIME_ALARM		8
  #define CLOCK_BOOTTIME_ALARM		9
  #define CLOCK_SGI_CYCLE			10	/* Hardware specific */
  #define CLOCK_TAI			11
  
  #define MAX_CLOCKS			16
  #define CLOCKS_MASK			(CLOCK_REALTIME | CLOCK_MONOTONIC)
  #define CLOCKS_MONO			CLOCK_MONOTONIC
  
  /*
   * The various flags for setting POSIX.1b interval timers:
   */
  #define TIMER_ABSTIME			0x01
  
  #endif /* _UAPI_LINUX_TIME_H */