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pmaddprofile(3)

NAME

   pmAddProfile - add instance(s) to the current PMAPI instance profile

C SYNOPSIS

   #include <pcp/pmapi.h>

   int pmAddProfile(pmInDom indom, int numinst, int *instlist);

   cc ... -lpcp

DESCRIPTION

   The set of instances for performance metrics returned from a pmFetch(3)
   call may be filtered or restricted using an instance profile.  There is
   one  instance  profile  for each context the application creates at the
   Performance Metrics Application Programming Interface  (PMAPI(3)),  and
   each  instance  profile may include instances from one or more instance
   domains (see pmLookupDesc(3)).

   pmAddProfile may be used to add  new  instance  specifications  to  the
   instance profile of the current PMAPI context.

   In  the  simplest  variant,  the  list  of  instances identified by the
   instlist argument for the  indom  instance  domain  are  added  to  the
   instance  profile.   The  list of instance identifiers contains numinst
   values.

   The  indom  value  would  normally  be  extracted  from   a   call   to
   pmLookupDesc(3)  for a particular performance metric, and the instances
   in instlist would typically be determined by calls to pmGetInDom(3)  or
   pmLookupInDom(3).

   To select all instances in all instance domains, use

      pmAddProfile(PM_INDOM_NULL, 0, (int *)0)

   This  is  the  only case where indom may be equal to PM_INDOM_NULL.  If
   numinst is zero, or instlist is NULL, then all instances in  indom  are
   selected.

SEE ALSO

   PMAPI(3),  pmDelProfile(3), pmFetch(3), pmGetInDom(3), pmLookupDesc(3),
   pmLookupInDom(3),      pmNewContext(3),       pmUseContext(3)       and
   pmWhichContext(3).

DIAGNOSTICS

   PM_ERR_PROFILESPEC
          indom was PM_INDOM_NULL and instlist was not empty

CAVEAT

   It  is  possible  to add non-existent instance domains and non-existent
   instances to an instance profile.  None of the routines  that  use  the
   instance  profile will ever issue an error if you do this.  The cost of
   checking, when checking is possible, outweighs any benefits.



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