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