PMINDOMSTR(3)
NAME
pmInDomStr - convert a performance metric instance domain identifier
into a string
C SYNOPSIS
#include <pcp/pmapi.h>
const char *pmInDomStr(pmInDom indom)
cc ... -lpcp
DESCRIPTION
For use in error and diagnostic messages, return a 'human readable'
version of the specified instance domain identifier.
The value for the instance domain indom is typically extracted from a
pmDesc structure, following a call to pmLookupDesc(3) for a particular
performance metric.
- Internally, an instance domain identifier is encoded as follows;
- typedef struct {
int pad:2;
unsigned int domain:8; /* the administrative PMD */ unsigned int serial:22; /* unique within PMD */ - } __pmInDom_int;
- pmInDomStr returns a string with each of the domain and serial subfields appearing as decimal numbers, separated by periods.
- The string value is held in a single static buffer, so the returned value is only valid until the next call to pmInDomStr.
PCP ENVIRONMENT
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(4). Values for these variables may be obtained programatically using the pmGetConfig(3) function.