Class CIM_Watchdog
extends CIM_LogicalDevice

CIM_Watchdog is a timer that is implemented in the system hardware. It allows the hardware to monitor the state of the Operating System, BIOS, or a software component that is installed on the System. If the monitored component fails to re-arm the timer before its expiration, the hardware assumes that the System is in a critical state, and could reset the ComputerSystem. This feature can also be used as an application watchdog timer for a mission-critical application. In this case, the application would assume responsibility for re-arming the timer before expiration.

Table of Contents
Hierarchy
Direct Known Subclasses
Class Qualifiers
Class Properties
Class Methods


Class Hierarchy

CIM_ManagedElement
   |
   +--CIM_ManagedSystemElement
   |
   +--CIM_LogicalElement
   |
   +--CIM_EnabledLogicalElement
   |
   +--CIM_LogicalDevice
   |
   +--CIM_Watchdog

Direct Known Subclasses

Class Qualifiers

NameData TypeValue
DescriptionstringCIM_Watchdog is a timer that is implemented in the system hardware. It allows the hardware to monitor the state of the Operating System, BIOS, or a software component that is installed on the System. If the monitored component fails to re-arm the timer before its expiration, the hardware assumes that the System is in a critical state, and could reset the ComputerSystem. This feature can also be used as an application watchdog timer for a mission-critical application. In this case, the application would assume responsibility for re-arming the timer before expiration.
UMLPackagePathstringCIM::Device::Processor
Versionstring2.10.0

Class Properties

Local Class Properties

NameData TypeDefault ValueQualifiers
NameData TypeValue
ActionOnExpirationuint16
DescriptionstringThe action that should happen upon the expiry of the watchdog.
ValueMapstring0, 1, 2, 3, 4, 5
ValuesstringNone - Status Only, System Reset, System Power Off, System Power Off, then On, Generate System NonMaskableInterrupt (NMI), Generate System Management Interrupt (SMI)
MonitoredEntityuint16
DescriptionstringThe entity that is currently being monitored by the WatchDog. This property is used to identify the module that is responsible for re-arming, or whose information is used to re-arm, the watchdog at periodic intervals.
ValueMapstring0, 1, 2, 3, 4, 5, 6, 7, 8
ValuesstringUnknown, Other, Operating System, Operating System Boot Process, Operating System Shutdown Process, Firmware Boot Process, BIOS Boot Process, Application, Service Processor
MonitoredEntityDescriptionstring
DescriptionstringA string that describes more textual information about the monitored entity.
MaxLenuint32256
MonitoredEntityOnLastExpirationuint16
DescriptionstringMonitored entity at the time of last timer expiry.
ValueMapstring0, 1, 2, 3, 4, 5, 6, 7, 8
ValuesstringUnknown, Other, Operating System, Operating System Boot Process, Operating System Shutdown Process, Firmware Boot Process, BIOS Boot Process, Application, Service Processor
TimeOfLastExpirationdatetime
DescriptionstringThe time of the last timer expiry.
TimeoutIntervaluint32
DescriptionstringThe timeout interval that is used by the watchdog, in MicroSeconds.
PUnitstringsecond * 10^-6
UnitsstringMicroSeconds
TimerResolutionuint32
DescriptionstringResolution of the timer. For example, if this value is 100, then the timer can expire anytime between (TimeoutInterval- 100) microseconds or (TimeoutInterval+100) microseconds.
PUnitstringsecond * 10^-6
UnitsstringMicroSeconds

Inherited Properties

NameData TypeClass Origin
Availabilityuint16CIM_LogicalDevice
CaptionstringCIM_ManagedElement
CommunicationStatusuint16CIM_ManagedSystemElement
CreationClassNamestringCIM_LogicalDevice
DescriptionstringCIM_ManagedElement
DetailedStatusuint16CIM_ManagedSystemElement
DeviceIDstringCIM_LogicalDevice
ElementNamestringCIM_ManagedElement
EnabledDefaultuint16CIM_EnabledLogicalElement
EnabledStateuint16CIM_EnabledLogicalElement
ErrorClearedbooleanCIM_LogicalDevice
ErrorDescriptionstringCIM_LogicalDevice
Generationuint64CIM_ManagedElement
HealthStateuint16CIM_ManagedSystemElement
InstallDatedatetimeCIM_ManagedSystemElement
InstanceIDstringCIM_ManagedElement
LastErrorCodeuint32CIM_LogicalDevice
LocationIndicatoruint16CIM_LogicalDevice
MaxQuiesceTimeuint64CIM_LogicalDevice
NamestringCIM_ManagedSystemElement
OperatingStatusuint16CIM_ManagedSystemElement
OtherEnabledStatestringCIM_EnabledLogicalElement
PowerManagementSupportedbooleanCIM_LogicalDevice
PowerOnHoursuint64CIM_LogicalDevice
PrimaryStatusuint16CIM_ManagedSystemElement
RequestedStateuint16CIM_EnabledLogicalElement
StatusstringCIM_ManagedSystemElement
StatusInfouint16CIM_LogicalDevice
SystemCreationClassNamestringCIM_LogicalDevice
SystemNamestringCIM_LogicalDevice
TimeOfLastStateChangedatetimeCIM_EnabledLogicalElement
TotalPowerOnHoursuint64CIM_LogicalDevice
TransitioningToStateuint16CIM_EnabledLogicalElement
AdditionalAvailabilityuint16[]CIM_LogicalDevice
AvailableRequestedStatesuint16[]CIM_EnabledLogicalElement
IdentifyingDescriptionsstring[]CIM_LogicalDevice
OperationalStatusuint16[]CIM_ManagedSystemElement
OtherIdentifyingInfostring[]CIM_LogicalDevice
PowerManagementCapabilitiesuint16[]CIM_LogicalDevice
StatusDescriptionsstring[]CIM_ManagedSystemElement

Class Methods

Local Class Methods

KeepAlive (uint32)

Method Qualifiers (KeepAlive)

NameData TypeValue
DescriptionstringA method to re-arm the timer. This method is used only if the MonitoredEntity is "Application". It returns 0 if successful, 1 if unsupported, and any other value if an error occurred. In a subclass, the set of possible return codes could be specified, using a ValueMap qualifier on the method. The strings to which the ValueMap contents are 'translated' can also be specified in the subclass as a Values array qualifier.

Method Parameters (KeepAlive)

NameTypeQualifiers
NameData TypeValue

Inherited Class Methods

NameReturn TypeClass Origin
EnableDeviceuint32CIM_LogicalDevice
OnlineDeviceuint32CIM_LogicalDevice
QuiesceDeviceuint32CIM_LogicalDevice
RequestStateChangeuint32CIM_EnabledLogicalElement
Resetuint32CIM_LogicalDevice
RestorePropertiesuint32CIM_LogicalDevice
SavePropertiesuint32CIM_LogicalDevice
SetPowerStateuint32CIM_LogicalDevice