NAME | C SYNOPSIS | Perl SYNOPSIS | DESCRIPTION | DIAGNOSTICS | SEE ALSO | COLOPHON
pmiGetHandle - define a handle for a metric-instance pair
#include <pcp/pmapi.h> #include <pcp/import.h> int pmiGetHandle(const char *name, const char *instance); cc ... -lpcp_import -lpcp
use PCP::LogImport; $handle = pmiGetHandle($name, $instance);
As part of the Performance Co-Pilot Log Import API (see LOGIMPORT(3)), pmiGetHandle creates a handle for a given metric and instance. The handle is returned as the value from the pmiGetHandle call and can be used in subsequent calls to pmiPutValueHandle(3). The metric's name should match one defined earlier in a call to pmiAddMetric(3). For singular metrics (those defined with an instance domain of PM_INDOM_NULL), the instance should be NULL or an empty string, otherwise instance should match the name of an instance defined earlier in a call to pmiAddInstance(3) for the metric's instance domain. When combined with pmiPutValueHandle(3), the use of handles provide a performance improvement over the alternative lookup for a metric name and an instance name for each data value that is required for pmiPutValue(3).
On failure pmiGetHandle returns a negative value that can be turned into an error message by calling pmiErrStr(3).
LOGIMPORT(3), pmiAddInstance(3), pmiAddMetric(3), pmiErrStr(3) and pmiPutValueHandle(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 firstname.lastname@example.org. This page was obtained from the project's upstream Git repository ⟨https://github.com/performancecopilot/pcp.git⟩ on 2022-12-17. (At that time, the date of the most recent commit that was found in the repository was 2022-12-16.) 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@example.com Performance Co-Pilot PMIGETHANDLE()
Pages that refer to this page: logimport(3), pmiaddinstance(3), pmiputvaluehandle(3), pmistart(3)