1PMDANAME(3) Library Functions Manual PMDANAME(3)
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6 pmdaName - translate a PMID to a set of dynamic performance metric
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10 #include <pcp/pmapi.h>
11 #include <pcp/impl.h>
12 #include <pcp/pmda.h>
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14 int pmdaName(pmID pmid, char ***nameset, pmdaExt *pmda);
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16 cc ... -lpcp_pmda -lpcp
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19 As part of the Performance Metrics Domain Agent (PMDA) API (see
20 PMDA(3)), pmdaName is the generic callback for translating a pmid into
21 one or more dynamic metric names (nameset).
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23 Because implementing dynamic performance metrics requires specific PMDA
24 support, and the facility is an optional component of a PMDA (most
25 PMDAs do not support dynamic performance metrics), pmdaName is a skeleā
26 ton implementation that returns PM_ERR_NAME.
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28 A PMDA that supports dynamic performance metrics will provide a private
29 callback that replaces pmdaName (by assignment to version.four.name of
30 the pmdaInterface structure) and implements the translation from a pmid
31 to a set of dynamic performance metric names returned via nameset. The
32 behaviour, return values and memory allocation rules for nameset are
33 the same as for pmNameAll(3).
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36 pmdaName returns PM_ERR_PMID if the name is not recognized or cannot be
37 translated, otherwise the number of metric names found (most commonly
38 1).
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41 The PMDA must be using PMDA_PROTOCOL_4 or later, as specified in the
42 call to pmdaDSO(3) or pmdaDaemon(3).
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45 PMAPI(3), PMDA(3), pmdaDaemon(3), pmdaDSO(3), pmdaMain(3), pmNameAll(3)
46 and pmNameID(3).
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50Performance Co-Pilot PCP PMDANAME(3)