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 cpc_event_diff 3CPC "28 Mar 2005" "SunOS 5.11" "CPU Performance Counters Library Functions"
 NAME
cpc_event_diff, cpc_event_accum - simple difference and accumulate operations

 SYNOPSIS


cc [ flag... ] file... -lcpc [ library... ]
#include <libcpc.h>

void cpc_event_accum(cpc_event_t *accum, cpc_event_t *event);






void cpc_event_diff(cpc_event_t *diff, cpc_event_t *after,
 cpc_event_t *before);




 DESCRIPTION

The cpc_event_accum() and cpc_event_diff() functions perform
common accumulate and difference operations on cpc_event(3CPC) data
structures. Use of these functions increases program portability, since
structure members are not referenced directly .

 "cpc_event_accum()"

The cpc_event_accum() function adds the ce_pic fields of
event into the corresponding fields of accum. The ce_hrt
field of accum is set to the later of the times in event and
accum.

 "SPARC:"

The function adds the contents of the ce_tick field of event into
the corresponding field of accum.

 "x86:"

The function adds the contents of the ce_tsc field of event into
the corresponding field of accum.

 "cpc_event_diff()"

The cpc_event_diff() function places the difference between the
ce_pic fields of after and before and places them in the
corresponding field of diff. The ce_hrt field of diff is set
to the ce_hrt field of after.

 "SPARC:"

Additionally, the function computes the difference between the ce_tick
fields of after and before, and places it in the corresponding
field of diff.

 "x86:"

Additionally, the function computes the difference between the ce_tsc
fields of after and before, and places it in the corresponding
field of diff.

 ATTRIBUTES

See attributes(5) for descriptions of the following attributes:







ATTRIBUTE TYPEATTRIBUTE VALUE
Interface StabilityObsolete
MT-LevelMT-Safe



 SEE ALSO

cpc(3CPC), cpc_buf_add(3CPC), cpc_buf_sub(3CPC),
cpc_event(3CPC), libcpc(3LIB), attributes(5)

 NOTES

The cpc_event_accum() and cpc_event_diff() functions exist for
binary compatibility only. Source containing these functions will not compile.
These functions are obsolete and might be removed in a future release.
Applications should use cpc_buf_add(3CPC) and cpc_buf_sub(3CPC)
instead.