NAME

       pmdaDSO - initialize the PMDA to run as a DSO

C SYNOPSIS

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

       int pmdaDSO(pmdaInterface *dispatch, int interface, char *name, char *helptext);

       cc ... -lpcp_pmda -lpcp

DESCRIPTION

       pmdaDSO  initializes the pmdaInterface structure to use the interface extensions, assuming the PMDA(3) is
       to be run as a DSO.  The pmdaInterface structure is initialized with:

       name           The name of the agent.

       helptext       The default path to the help text (see pmdaText(3).  If no help text is installed, or  you
                      are not using pmdaText(3), then this should be set to NULL.

       The  callbacks are initialized to pmdaProfile(3), pmdaFetch(3), pmdaDesc(3), pmdaText(3), pmdaInstance(3)
       and pmdaStore(3).

       The interface structure also contains the domain of the PMDA(3), which is defined in the pmcd(1) configu‐
       ration file. The domain is used to initialize the metric and instance descriptors (see pmdaInit(3)).

DIAGNOSTICS

       Incompatible version of pmcd detected
                      When pmcd(1) creates the pmdaInterface structure, the dispatch.comm.version field  is  set
                      to the highest protocol that pmcd(1) understands.  This message indicates that the pmcd(1)
                      process does not understand the protocol used by pmdaDSO.

       Unable to allocate memory for pmdaExt structure
                      In addition, dispatch->status is set to a value less than zero.

CAVEAT

       The PMDA must be using PMDA_INTERFACE_2 or later.

SEE ALSO

       pmcd(1), PMAPI(3), PMDA(3), pmdaDaemon(3), pmdaInit(3) and pmdaText(3).

Performance Co-Pilot                                   PCP                                            PMDADSO(3)