pmprintvalue(3) — Linux manual page


PMPRINTVALUE(3)         Library Functions Manual         PMPRINTVALUE(3)

NAME         top

       pmPrintValue - print a performance metric value

C SYNOPSIS         top

       #include <stdio.h>
       #include <pcp/pmapi.h>

       void pmPrintValue(FILE *f, int valfmt, int type,
               const pmValue *val, int minwidth);

       cc ... -lpcp

DESCRIPTION         top

       The value of a single performance metric (as identified by val)
       is printed on the standard I/O stream identified by f.

       The value of the performance metric is interpreted according to
       the format of val as defined by valfmt (from a pmValueSet within
       a pmResult structure; see pmFetch(3)) and the generic description
       of the metrics type passed in via type.

       The value for type is typically extracted from a pmDesc
       structure, following a call to pmLookupDesc(3) for a particular
       performance metric.

       The output will be optionally padded to be at least minwidth
       characters wide.

       pmPrintValue is most useful for displaying values of performance
       metrics from pmFetch(3) (which returns a set of valfmt and val
       pairs for each requested metric), based upon the metrics type as
       returned from pmLookupDesc(3).

SEE ALSO         top

       PMAPI(3), pmAtomStr(3), pmConvScale(3), pmExtractValue(3),
       pmFetch(3), pmLookupDesc(3), pmTypeStr(3) and pmUnitsStr(3).

COLOPHON         top

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       ⟨⟩ on 2023-12-22.
       (At that time, the date of the most recent commit that was found
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       (which is not part of the original manual page), send a mail to

Performance Co-Pilot               PCP                   PMPRINTVALUE(3)

Pages that refer to this page: pmprobe(1)pmapi(3)pmatomstr(3)pmconvscale(3)pmextractvalue(3)pmsemstr(3)pmtypestr(3)pmunitsstr(3)