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NAME | C++ SYNOPSIS | DESCRIPTION | CONSTRUCTORS & DESTRUCTOR | DESCRIPTION | UNITS | DIAGNOSTICS | SEE ALSO | COLOPHON |
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QMCDESC(3) Library Functions Manual QMCDESC(3)
QmcDesc - container for a metric description
#include <QmcDesc.h>
c++ ... -lpcp_qmc -lpcp
A QmcDesc object is a container for a metric descriptor (pmDesc,
see PMAPI(3)) and units.
~QmcDesc();
Destructor.
QmcDesc(pmID pmid);
Construct a container for the descriptor for pmid. The de‐
scriptor is obtained from the current PMAPI(3) context using
pmLookupDesc(3).
int status() const;
A status less than zero indicates that the descriptor could
not be obtained, the PMAPI(3) error is encoded in the result.
pmID id() const;
Return the pmID for this descriptor.
pmDesc desc() const;
Return a copy of the actual metric descriptor.
const pmDesc *descPtr() const;
Return a pointer to the actual descriptor to avoid using a
pointer to a temporary.
const QString &units() const;
The complete unit string for this descriptor.
const QString &shortUnits() const;
The unit string using abbreviations.
bool useScaleUnits() const;
Returns true if the units have been set by a call to QmcDe‐
sc::setScaleUnits.
const pmUnits &scaleUnits() const;
Return the scaling units for this descriptor.
void setScaleUnits(const pmUnits &units);
Set the scaling units for this descriptor.
Error messages are generated using pmprintf(3) but are not
flushed. It is the responsibility of the user to call pmflush(3)
to output any messages.
Additional diagnostics may be activated by adding the option pmc
to the global debugging specification, as described in
pmSetDebug(3).
PMAPI(3), QMC(3), pmflush(3), pmLookupDesc(3) and pmprintf(3).
This page is part of the PCP (Performance Co-Pilot) project. In‐
formation about the project can be found at ⟨http://www.pcp.io/⟩.
If you have a bug report for this manual page, send it to
[email protected]. This page was obtained from the project's upstream
Git repository ⟨https://github.com/performancecopilot/pcp.git⟩ on
2025-08-11. (At that time, the date of the most recent commit
that was found in the repository was 2025-08-11.) 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 [email protected]
Performance Co-Pilot SGI QMCDESC(3)
Pages that refer to this page: QMC(3), QmcContext(3), QmcIndom(3)
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HTML rendering created 2025-09-06 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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