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. More...
rpmtime_t	rpmswDiff (rpmsw end, rpmsw begin)
	Return benchmark time stamp difference. More...
rpmtime_t	rpmswInit (void)
	Return benchmark time stamp overhead. More...
int	rpmswEnter (rpmop op, ssize_t rc)
	Enter timed operation. More...
rpmtime_t	rpmswExit (rpmop op, ssize_t rc)
	Exit timed operation. More...
rpmtime_t	rpmswAdd (rpmop to, rpmop from)
	Sum statistic counters. More...
rpmtime_t	rpmswSub (rpmop to, rpmop from)
	Subtract statistic counters. More...

Detailed Description

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.

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