NAME¶

pmPrintValue - print a performance metric value

C SYNOPSIS¶

#include <stdio.h> #include <pcp/pmapi.h>
void pmPrintValue(FILE * f, int valfmt, int type, const pmValue * val, int minwidth);
cc ... -lpcp

DESCRIPTION¶

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¶

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