pmsemstr(3) — Linux manual page

PMSEMSTR(3)             Library Functions Manual             PMSEMSTR(3)

NAME

       pmSemStr, pmSemStr_r - convert a performance metric semantic into
       a string

C SYNOPSIS

       #include <pcp/pmapi.h>

       const char *pmSemStr(int sem);
       char *pmSemStr_r(int sem, char *buf, int buflen);

       cc ... -lpcp

DESCRIPTION

       Given a performance metric semantic, pmSemStr produces a terse
       ASCII equivalent, appropriate for use in error and diagnostic
       messages.  The pmSemStr_r function does the same, but stores the
       result in a user-supplied buffer buf of length buflen, which
       should have room for at least 20 bytes.

       The value for sem is typically extracted from a pmDesc structure,
       following a call to pmLookupDesc(3) for a particular performance
       metric.

       Examples are counter (for sem equals PM_SEM_COUNTER), discrete
       (for sem equals PM_SEM_DISCRETE), instant (for sem equals
       PM_SEM_INSTANT), etc.

NOTES

       Both of these routines are safe to call from threaded
       applications.

SEE ALSO

       PMAPI(3), pmAtomStr(3), pmConvScale(3), pmExtractValue(3),
       pmLookupDesc(3), pmPrintValue(3), pmIDStr(3), pmInDomStr(3),
       pmTypeStr(3) and pmUnitsStr(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
       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                       PMSEMSTR(3)

Pages that refer to this page: pmidstr(3), pmindomstr(3), pmtypestr(3), pmunitsstr(3), pmwebapi(3)

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