SYS_Time.h File Reference

#include "SYS_API.h"
#include "SYS_Types.h"
#include <time.h>
#include <sys/time.h>

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Typedefs
typedef struct timeval	SYS_TimeVal

Functions
SYS_API int	SYSgettimeofday (SYS_TimeVal *tval)
SYS_API time_t	SYSclock ()
SYS_API fpreal	SYStime ()
SYS_API fpreal	SYStime (const SYS_TimeVal &tval)
	Return the number of seconds expressed in the given time value. More...
SYS_API void	SYSrusage (SYS_TimeVal &user, SYS_TimeVal &sys)
fpreal64	SYStimeDiff (const SYS_TimeVal &end, const SYS_TimeVal &start)

Typedef Documentation

typedef struct timeval SYS_TimeVal

Definition at line 31 of file SYS_Time.h.

Function Documentation

SYS_API time_t SYSclock

(

)

Return a number of milliseconds since the process started. This function will wrap values every 50 days or so.

SYS_API int SYSgettimeofday

(

SYS_TimeVal *

tval

)

SYSgettimeofday() fills in tval with the "current" time, which cannot be given any particular meaning. These values are only useful for comparing against each other.

SYS_API void SYSrusage	(	SYS_TimeVal &	user,
		SYS_TimeVal &	sys
	)

Return the system resource usage times (user and system) for the current process.

SYS_API fpreal SYStime

(

)

Return the number of seconds since some arbitrary start time as a real number. Returns -1 if there was an error computing the time.

SYS_API fpreal SYStime

(

const SYS_TimeVal &

tval

)

Return the number of seconds expressed in the given time value.

fpreal64 SYStimeDiff ( const SYS_TimeVal &  end, const SYS_TimeVal &  start  )

inline

Return the number of seconds (with floating point precision) between the start and end times. The end time should be later than the start time.

Definition at line 58 of file SYS_Time.h.