pmDerivedErrStr (3) Linux Manual Page
pmDerivedErrStr – return error message from failure to parse derived metric definition
C Synopsis
#include <pcp/pmapi.h>
char *pmDerivedErrStr(void);
cc … -lpcp
Description
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.
See Also
PCPIntro(1), PMAPI(3) and pmRegisterDerived(3).