NAME

       pmdaSendError

C SYNOPSIS

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

       void pmdaSendError(pmdaInterface *dispatch, int err);

       cc ... -lpcp_pmda -lpcp

PYTHON SYNOPSIS

       from pcp.pmda import PMDA
       PMDA.pmda_notready()
       PMDA.pmda_ready()

DESCRIPTION

       As  part  of  the  Performance Metrics Domain Agent (PMDA) API (see PMDA(3)), this routine
       allows a PMDA to send an error PDU to PMCD.  There is presently only one use for this - so
       the PMDA can inform PMCD that it is ready (or not ready) to process requests.

       The  protocol  details  are  described  in  pmcd(1), but basically if a PMDA starts in the
       notready state (as may be specified in pmcd.conf, see pmcd(1)) then PMCD will not send  it
       any requests until the PMDA sends an PM_ERR_PMDAREADY error PDU using this function.  This
       is used by a PMDA that may have a long startup time, e.g. to process a large configuration
       file or similar.

SEE ALSO

       PMAPI(3), PMDA(3), pmcd(1), and pmdaprometheus(1).