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HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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NAME | C SYNOPSIS | DESCRIPTION | NOTES | PCP ENVIRONMENT | SEE ALSO | COLOPHON |
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PMIDSTR(3) Library Functions Manual PMIDSTR(3)
pmIDStr, pmIDStr_r - convert a performance metric identifier into
a string
#include <pcp/pmapi.h>
const char *pmIDStr(pmID pmid);
char *pmIDStr_r(pmID pmid, char *buf, int buflen);
cc ... -lpcp
For use in error and diagnostic messages, pmIDStr returns a `human
readable' version of the specified Performance Metric Identifier
(PMID). The pmIDStr_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.
Internally, a PMID is encoded with three fields: domain, cluster
and item. pmIDStr returns a string with each of the fields
appearing as decimal numbers, separated by periods.
The string value result from pmIDStr is held in a single static
buffer, so the returned value is only valid until the next call to
pmIDStr.
pmIDStr returns a pointer to a static buffer and hence is not
thread-safe. Multi-threaded applications should use pmIDStr_r
instead.
Environment variables with the prefix PCP_ are used to
parameterize the file and directory names used by PCP. On each
installation, the file /etc/pcp.conf contains the local values for
these variables. The $PCP_CONF variable may be used to specify an
alternative configuration file, as described in pcp.conf(5).
Values for these variables may be obtained programmatically using
the pmGetConfig(3) function.
PMAPI(3), pmGetConfig(3), pmInDomStr(3), pmTypeStr(3),
pmSemStr(3), pmUnitsStr(3), pmLookupDesc(3), pcp.conf(5) and
pcp.env(5).
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@groups.io. This page was obtained from the
project's upstream Git repository
⟨https://github.com/performancecopilot/pcp.git⟩ on 2025-02-02.
(At that time, the date of the most recent commit that was found
in the repository was 2025-01-30.) 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 PMIDSTR(3)
Pages that refer to this page: pmid_helper(3), pmindomstr(3), pmsemstr(3), pmtypestr(3), pmunitsstr(3), pmwebapi(3)
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HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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