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.

SEE ALSO

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

DIAGNOSTICS

       PM_ERR_NOCONTEXT

              handle does not identify a valid PMAPI context