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NAME | C SYNOPSIS | DESCRIPTION | COMPATIBILITY | SEE ALSO | COLOPHON |
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PMFREERESULT(3) Library Functions Manual PMFREERESULT(3)
pmFreeResult - release storage allocated for performance metrics
values
#include <pcp/pmapi.h>
void pmFreeResult(pmResult *result);
cc ... -lpcp
The variable sized results returned by pmFetch(3) are allocated
below the Performance Metrics Application Programming Interface
(PMAPI) using a combination of dynamic (i.e. malloc(3)) and spe‐
cialized allocation strategies.
Applications should call pmFreeResult to release the storage pre‐
viously allocated for result by pmFetch(3), when the application
no longer requires access to the pmResult structure.
Under no circumstances should an application use free(result) to
release storage previously allocated for a pmResult by pmFetch(3).
Prior to PCP 7.0 the timestamp field in the pmResult struct was a
struct timeval. To support PMAPI transition, the old interface
and semantics can be used if applications are recompiled with
-DPMAPI_VERSION=2.
For a time in PCP 6.x there was a routine with the same semantics
as the current pmFreeResult called pmFreeHighResResult although
this is now deprecated and compile-time support for pmFreeHighRes‐
Result will be removed in a future release.
PMAPI(3), malloc(3) and pmFetch(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
[email protected]. 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 [email protected]
Performance Co-Pilot PCP PMFREERESULT(3)
Pages that refer to this page: pmapi(3), pmfetch(3), pmfetcharchive(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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