NAME

       pmiGetHandle - define a handle for a metric-instance pair

C SYNOPSIS

       #include <pcp/pmapi.h>
       #include <pcp/impl.h>
       #include <pcp/import.h>

       int pmiGetHandle(const char *name, const char *instance);

       cc ... -lpcp_import -lpcp

Perl SYNOPSIS

       use PCP::LogImport;

       $handle = pmiGetHandle($name, $instance);

DESCRIPTION

       As  part  of  the  Performance  Co-Pilot  Log  Import API (see LOGIMPORT(3)), pmiGetHandle
       creates a handle for a given metric and instance.  The handle is  returned  as  the  value
       from the pmiGetHandle call and can be used in subsequent calls to pmiPutValueHandle(3).

       The metric's name should match one defined earlier in a call to pmiAddMetric(3).

       For  singular  metrics  (those  defined  with  an  instance  domain of PM_INDOM_NULL), the
       instance should be NULL or an empty string, otherwise instance should match the name of an
       instance defined earlier in a call to pmiAddInstance(3) for the metric's instance domain.

       When  combined  with  pmiPutValueHandle(3),  the  use  of  handles  provide  a performance
       improvement over the alternative lookup for a metric name and an instance  name  for  each
       data value that is required for pmiPutValue(3).

DIAGNOSTICS

       On  failure pmiGetHandle returns a negative value that can be turned into an error message
       by calling pmiErrStr(3).

SEE ALSO

       LOGIMPORT(3), pmiAddInstance(3), pmiAddMetric(3), pmiErrStr(3) and pmiPutValueHandle(3).

                                       Performance Co-Pilot                       PMIGETHANDLE3()