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pmtypestr(3)


NAME

   pmTypeStr,  pmTypeStr_r  -  convert  a  performance  metric type into a
   string

C SYNOPSIS

   #include <pcp/pmapi.h>

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

   cc ... -lpcp

DESCRIPTION

   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
   metric.

   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
   pmTypeStr.

NOTES

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

SEE ALSO

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



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