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

       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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Performance Co-Pilot                 PCP                     PMPRINTVALUE(3)