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NAME | C SYNOPSIS | DESCRIPTION | NOTES | SEE ALSO | COLOPHON |
PMSEMSTR(3) Library Functions Manual PMSEMSTR(3)
pmSemStr, pmSemStr_r - convert a performance metric semantic into a
string
#include <pcp/pmapi.h>
const char *pmSemStr(int sem);
char *pmSemStr_r(int sem, char *buf, int buflen);
cc ... -lpcp
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.
pmSemStr returns a pointer to a static buffer and hence is not
thread-safe. Multi-threaded applications should use pmSemStr_r
instead.
PMAPI(3), pmAtomStr(3), pmConvScale(3), pmExtractValue(3),
pmLookupDesc(3), pmPrintValue(3), pmIDStr(3), pmInDomStr(3),
pmTypeStr(3) and pmUnitsStr(3).
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 2017-07-05. 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)