pmdestroycontext(3) — Linux manual page

PMDESTROYCONTEXT(3)     Library Functions Manual     PMDESTROYCONTEXT(3)

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 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

       PM_ERR_NOCONTEXT

              handle does not identify a valid PMAPI context

SEE ALSO

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

COLOPHON

       This page is part of the PCP (Performance Co-Pilot) project.
       Information about the project can be found at 
       ⟨http://www.pcp.io/⟩.  If you have a bug report for this manual
       page, send it to pcp@groups.io.  This page was obtained from the
       project's upstream Git repository
       ⟨https://github.com/performancecopilot/pcp.git⟩ on 2024-06-14.
       (At that time, the date of the most recent commit that was found
       in the repository was 2024-06-14.)  If you discover any rendering
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       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

Performance Co-Pilot               PCP               PMDESTROYCONTEXT(3)

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

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