NAME | C SYNOPSIS | DESCRIPTION | NOTES | SEE ALSO | COLOPHON

PMSEMSTR(3)               Library Functions Manual               PMSEMSTR(3)

NAME         top

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

C SYNOPSIS         top

       #include <pcp/pmapi.h>

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

       cc ... -lpcp

DESCRIPTION         top

       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.

       The string value result for pmSemStr is held in a single static
       buffer, so the returned value is only valid until the next call to
       pmSemStr.

NOTES         top

       pmSemStr returns a pointer to a static buffer and hence is not
       thread-safe.  Multi-threaded applications should use pmSemStr_r
       instead.

SEE ALSO         top

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

COLOPHON         top

       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@oss.sgi.com.  This page was obtained from the project's upstream
       Git repository ⟨git://git.pcp.io/pcp⟩ on 2017-05-03.  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)