pmderivederrstr3
Return error message from failure to parse derived metric definition
Part of pmDerivedErrStr(3).
C synopsis
#include <pcp/pmapi.h>
char *pmDerivedErrStr(void);
cc ... -lpcp
Overview
When pmRegisterDerived(3) is called to add a new derived metric definition and an error occurs, pmDerivedErrStr may be called to return the associated error message.
The pmRegisterDerivedMetric interface provides a convenience wrapper around both pmRegisterDerived and pmDerivedErrStr.