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       pmNameAll,  pmRequestNameAll,  pmReceiveNameAll - translate a PMID to a
       set of performance metric names


       #include <pcp/pmapi.h>

       int pmNameAll(pmID pmid, char ***nameset)
       int pmRequestNameAll(int ctx, pmID pmid)
       int pmReceiveNameAll(int ctx, char ***nameset)

       cc ... -lpcp


       Given a Performance Metric ID (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(3C),   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

       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.

       pmRequestNameAll and pmReceiveNameAll are used  by  applications  which
       must   communicate  with the PMCD asynchronously.  These functions take
       explict context handle ctx which must refer to  a  host  context  (i.e.
       created  by  passing PM_CONTEXT_HOST to pmNewContext). pmRequestNameAll
       sends request to PMCD to return names of all metrics  matching  a  PMID
       and  returns  without  waiting for the response, pmReceiveNameAll reads
       reply from PMCD. It is the responsibility of the  application  to  make
       sure  the  data  are  ready  before  calling  pmReceiveNameAll to avoid


       PMAPI(3),  pmGetChildren(3),  pmGetChildrenStatus(3),   pmGetConfig(3),
       pmLoadASCIINameSpace(3),      pmLoadNameSpace(3),      pmLookupName(3),
       pmNameID(3), pmNewContext(3), pcp.conf(4), pcp.env(4) and pmns(4).


              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)).

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

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

              Context is currently in use by another asynchronous call.