pmdestroycontext(3) — Linux manual page


PMDESTROYCONTEXT(3)     Library Functions Manual     PMDESTROYCONTEXT(3)

NAME         top

       pmDestroyContext - destroy a PMAPI context

C SYNOPSIS         top

       #include <pcp/pmapi.h>

       int pmDestroyContext(int handle);

       cc ... -lpcp

DESCRIPTION         top

       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 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 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         top


              handle does not identify a valid PMAPI context

SEE ALSO         top

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

COLOPHON         top

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Performance Co-Pilot               PCP               PMDESTROYCONTEXT(3)

Pages that refer to this page: pcpintro(3)pmaddderived(3)pmapi(3)pmnewcontext(3)pmusecontext(3)pmwhichcontext(3)