pmwhichcontext3
Identify the current pmapi context
Part of pmWhichContext(3).
C synopsis
#include <pcp/pmapi.h>
int pmWhichContext(void);
cc ... -lpcp
Overview
An application using the Performance Metrics Application Programming Interface (PMAPI) may manipulate several concurrent contexts, each associated with a source of performance metrics, e.g. pmcd(1) on some host, or an archive log of performance metrics as created by pmlogger(1).
pmWhichContext returns a handle for the current PMAPI context, that may be used in the associated PMAPI routines that require a handle to identify a PMAPI context.
Diagnostics
PM_ERR_NOCONTEXT-
no current context