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NAME | C SYNOPSIS | DESCRIPTION | DIAGNOSTICS | SEE ALSO | COLOPHON |
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PMUSECONTEXT(3) Library Functions Manual PMUSECONTEXT(3)
pmUseContext - change current PMAPI context
#include <pcp/pmapi.h>
int pmUseContext(int handle);
cc ... -lpcp
An application using the Performance Metrics Application Program‐
ming 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).
Calling pmUseContext causes the current PMAPI context to be set to
the context identified by handle. The value of handle must be one
returned from an earlier call to pmNewContext(3) or
pmDupContext(3).
Below the PMAPI, all contexts used by an application are saved in
their most recently modified state, so pmUseContext restores the
context to the state it was in the last time the context was used,
not the state of the context when it was established.
PM_ERR_NOCONTEXT
handle does not identify a valid PMAPI context
PMAPI(3), pmDestroyContext(3), pmDupContext(3), pmNewContext(3)
and pmWhichContext(3).
This page is part of the PCP (Performance Co-Pilot) project. In‐
formation 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
2025-08-11. (At that time, the date of the most recent commit
that was found in the repository was 2025-08-11.) If you discover
any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page,
or you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a
mail to man-pages@man7.org
Performance Co-Pilot PCP PMUSECONTEXT(3)
Pages that refer to this page: pmaddprofile(3), pmapi(3), pmdelprofile(3), pmdestroycontext(3), pmdupcontext(3), pmfetch(3), pmfetchgroup(3), pmistart(3), pmnewcontext(3), pmreconnectcontext(3), pmwhichcontext(3), QmcGroup(3)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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