NAME

       pmDestroyContext - destroy a PMAPI context

C SYNOPSIS

       #include <pcp/pmapi.h>

       int pmDestroyContext(int handle);

       cc ... -lpcp

DESCRIPTION

       An application using the Performance Metrics Application Programming Interface (PMAPI) may
       manipulate several concurrent contexts, each  associated  with  a  source  of  performance
       metrics, e.g. pmcd(1) on some host, or an archive log of performance metrics as created by
       pmlogger(1).

       pmDestroyContext destroys the PMAPI context identified by handle.   Typically  this  would
       imply  some  termination  of  a  connection  to a PMCD or closing an archive log file, and
       orderly clean-up.

       The context must have been previously created using pmNewContext(3) or pmDupContext(3).

       On success, pmDestroyContext returns zero.  If handle was the current PMAPI context,  then
       the  current  context  becomes  undefined.  This means the application must explicitly re-
       establish a valid PMAPI context  with  pmUseContext(3),  or  create  a  new  context  with
       pmNewContext(3)  or pmDupContext(3), before the next PMAPI operation that requires a PMAPI
       context.

DIAGNOSTICS

       PM_ERR_NOCONTEXT

              handle does not identify a valid PMAPI context

SEE ALSO

       PMAPI(3), pmDupContext(3), pmNewContext(3), pmUseContext(3) and pmWhichContext(3).