Statistics API.

Data Structures
struct	rpmsw_s
struct	rpmop_s
	Cumulative statistics for an operation. More...
Typedefs
typedef unsigned long int	rpmtime_t
typedef struct rpmsw_s *	rpmsw
typedef struct rpmop_s *	rpmop
Functions
rpmsw	rpmswNow (rpmsw sw)
	Return benchmark time stamp.
rpmtime_t	rpmswDiff (rpmsw end, rpmsw begin)
	Return benchmark time stamp difference.
rpmtime_t	rpmswInit (void)
	Return benchmark time stamp overhead.
int	rpmswEnter (rpmop op, ssize_t rc)
	Enter timed operation.
rpmtime_t	rpmswExit (rpmop op, ssize_t rc)
	Exit timed operation.
rpmtime_t	rpmswAdd (rpmop to, rpmop from)
	Sum statistic counters.
rpmtime_t	rpmswSub (rpmop to, rpmop from)
	Subtract statistic counters.

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Typedef Documentation

typedef struct rpmop_s* rpmop

Definition at line 25 of file rpmsw.h.

typedef struct rpmsw_s* rpmsw

Definition at line 21 of file rpmsw.h.

typedef unsigned long int rpmtime_t

Definition at line 17 of file rpmsw.h.

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Function Documentation

rpmtime_t rpmswAdd	(	rpmop	to,
		rpmop	from
	)

Sum statistic counters.

Parameters:

	to	result statistics
	from	operation statistics

Returns:

cumulative usecs for operation

rpmtime_t rpmswDiff	(	rpmsw	end,
		rpmsw	begin
	)

Return benchmark time stamp difference.

Parameters:

	*end	end time stamp
	*begin	begin time stamp

Returns:

difference in micro-seconds

int rpmswEnter	(	rpmop	op,
		ssize_t	rc
	)

Enter timed operation.

Parameters:

	op	operation statistics
	rc	-1 clears usec counter

Returns:

0 always

rpmtime_t rpmswExit	(	rpmop	op,
		ssize_t	rc
	)

Exit timed operation.

Parameters:

	op	operation statistics
	rc	per-operation data (e.g. bytes transferred)

Returns:

cumulative usecs for operation

rpmtime_t rpmswInit

(

void

)

Return benchmark time stamp overhead.

Returns:

overhead in micro-seconds

rpmsw rpmswNow

(

rpmsw

sw

)

Return benchmark time stamp.

Parameters:

*sw

time stamp

Returns:

0 on success

rpmtime_t rpmswSub	(	rpmop	to,
		rpmop	from
	)

Subtract statistic counters.

Parameters:

	to	result statistics
	from	operation statistics

Returns:

cumulative usecs for operation