/*****************************************************************************
 * Utility Library
 *
 * Time utilities header file
 *
 *****************************************************************************/

#ifndef _UTL_TIME_INCLUDED
#define _UTL_TIME_INCLUDED

#include <stdlib.h>

#include <utlTypes.h>


/*--- Data Types ------------------------------------------------------------*/

/*--- time ---*/
typedef int utlSecond_T;
typedef int utlNanosecond_T;

/*--- relative time ---*/
typedef struct utlRelativeTime_S {
    utlSecond_T     seconds;
    utlNanosecond_T nanoseconds;
}             utlRelativeTime_T, *utlRelativeTime_P;
typedef const utlRelativeTime_T  *utlRelativeTime_P2c;

/*--- epoch-referenced absolute time ---*/
typedef struct utlAbsoluteTime_S {
    utlSecond_T     seconds;
    utlNanosecond_T nanoseconds;
}             utlAbsoluteTime_T, *utlAbsoluteTime_P;
typedef const utlAbsoluteTime_T  *utlAbsoluteTime_P2c;

#ifndef TIME_VAL_DEF
#define TIME_VAL_DEF
struct timeval {
	int tv_sec;
	int tv_usec;
};
#endif

struct itimerval {
struct timeval it_interval;
struct timeval it_value;
} ;


#define       timercmp(tvp, uvp, cmp)\
		((tvp)->tv_sec cmp (uvp)->tv_sec ||\
              ((tvp)->tv_sec == (uvp)->tv_sec &&\
              (tvp)->tv_usec cmp (uvp)->tv_usec))

#define       timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0)




/*--- Prototypes ------------------------------------------------------------*/

#ifdef __cplusplus
extern "C" {
#endif

extern utlReturnCode_T utlCurrentTime   (const utlAbsoluteTime_P    time_p);
extern utlReturnCode_T utlFormatTime    (      char                *buf_p,
                                         const size_t               n,
                                         const utlAbsoluteTime_P2c  time_p);
extern utlReturnCode_T utlFormatDate    (      char                *buf_p,
                                         const size_t               n,
                                         const utlAbsoluteTime_P2c  time_p);
extern utlReturnCode_T utlFormatDateTime(      char                *buf_p,
                                         const size_t               n,
                                         const utlAbsoluteTime_P2c  time_p);
extern utlReturnCode_T utlPause         (const utlRelativeTime_P2c  time_p);

#ifdef __cplusplus
}
#endif

#endif /* _UTL_TIME_INCLUDED */