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   pmSemStr    ( 3 )

преобразовать семантику метрики производительности в строку (convert a performance metric semantic into a string)

   Дубль

(статьи: pmsemstr - преобразовать семантику метрики производительности в строку )

Имя (Name)

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


Синопсис C (C Synopsis)

#include <pcp/pmapi.h>

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

cc ... -lpcp


Описание (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.


Примечание (Note)

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


Смотри также (See also)

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