PMTYPESTR(3)              Library Functions Manual              PMTYPESTR(3)

NAME         top

       pmTypeStr,  pmTypeStr_r  -  convert  a performance metric type into a

C SYNOPSIS         top

       #include <pcp/pmapi.h>

       const char *pmTypeStr(int type);
       char *pmTypeStr_r(int type, char *buf, int buflen);

       cc ... -lpcp

DESCRIPTION         top

       Given a performance metric type, pmTypeStr produces a terse ASCII
       equivalent, appropriate for use in error and diagnostic messages.
       The pmTypeStr_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 type is typically extracted from a pmDesc structure,
       following a call to pmLookupDesc(3) for a particular performance

       Examples are 32 (for type equals PM_TYPE_32), U64 (for type equals
       PM_TYPE_U64), AGGREGATE (for type equals PM_TYPE_AGGREGATE), etc.

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

NOTES         top

       pmTypeStr returns a pointer to a static buffer and hence is not
       thread-safe.  Multi-threaded applications should use pmTypeStr_r

SEE ALSO         top

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

COLOPHON         top

       This page is part of the PCP (Performance Co-Pilot) project.
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       If you have a bug report for this manual page, send it to  This page was obtained from the project's upstream
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       2018-02-02.  (At that time, the date of the most recent commit that
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       rendering problems in this HTML version of the page, or you believe
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       (which is not part of the original manual page), send a mail to

Performance Co-Pilot                 PCP                        PMTYPESTR(3)

Pages that refer to this page: pmatomstr(3)pmconvscale(3)pmextractvalue(3)pmidstr(3)pmindomstr(3)pmlookupdesc(3)pmprintvalue(3)pmsemstr(3)pmunitsstr(3)