Writing Monitors for the Event Monitoring Service (December 1999)

158 Chapter5

Writing a Target Application

Processing a Restart Notiﬁcation Object

A Restart Notiﬁcation object identiﬁes resourcesthat were affected by an

outage of a resource monitor. This occurs when a resource monitor

process unexpectedly dies, or when a system that is being monitored is

rebooted. A target may want to know when a resource monitor has been

restarted, since the resource value for one of the resources being

monitored could have been at a critical level while the resource monitor

was down.

The Restart Notiﬁcation object is similar to a Subclass Reply object.

Included in the Restart Notiﬁcation object is a list of objects that contain

the names of the resources that are affected by the resource monitor

restart.

Table 5-3 Restart Notiﬁcation Object Fields

Field Name Type Description

RmFirst

ResourceEntry

rm_object

_addr

The ﬁrst object in the Resource List. If

the Resource List is empty, rm_get()

returns NULL.

Note that subsequent calls using

RmFirstResourceEntry will return

the ﬁrst object in the list. To step through

the list, use RmFirstResourceEntry,

then RmNextResourceEntry until all

of the objects have been returned.

RmMonitor

Command

char * A pointer to a single null-terminated

string that is the command line that was

used to invoke the monitor.