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pmnameall(3)

NAME

   pmNameAll - translate a PMID to a set of performance metric names

C SYNOPSIS

   #include <pcp/pmapi.h>

   int pmNameAll(pmID pmid, char ***nameset);

   cc ... -lpcp

DESCRIPTION

   Given  a  Performance Metric Identifier (PMID) via pmid, pmNameAll will
   determine  all  the  corresponding  metric  names,  if  any,   in   the
   Performance Metrics Name Space (PMNS), and return these via nameset.

   The  resulting  list  of  pointers nameset and the values (the relative
   names)  that  the  pointers  reference  will  have  been  allocated  by
   pmNameAll with a single call to malloc(3), and it is the responsibility
   of the pmNameAll caller to free(nameset) to release the space  when  it
   is no longer required.

   In  the  absence  of  errors,  pmNameAll returns the number of names in
   nameset.

   For many examples of a PMNS, there will be a 1:1 mapping between a name
   and  a  PMID,  and  under  these  circumstances, pmNameID(3) provides a
   slightly simpler interface in the absence  of  duplicate  names  for  a
   particular PMID.

SEE ALSO

   PMAPI(3),   pmGetChildren(3),  pmGetChildrenStatus(3),  pmGetConfig(3),
   pmLoadASCIINameSpace(3),      pmLoadNameSpace(3),      pmLookupName(3),
   pmNameID(3), pmNewContext(3), pcp.conf(5), pcp.env(5) and pmns(5).

DIAGNOSTICS

   PM_ERR_NOPMNS
          Failed  to  access  a  PMNS  for  operation.   Note  that if the
          application hasn't a priori called pmLoadNameSpace(3) and  wants
          to  use  the  distributed PMNS, then a call to pmNameAll must be
          made after the creation of a context (see pmNewContext(3)).

   PM_ERR_PMID
          pmid does not correspond to a defined PMID in the PMNS.

   PM_ERR_*
          Other diagnostics are for protocol failures when  accessing  the
          distributed PMNS.



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