TRACE_INFORMATION_CLASS enumeration (wdm.h)

2022-02-25

The TRACE_INFORMATION_CLASS enumeration type is used to indicate types of information associated with a WMI event tracing session.

Syntax

typedef enum _TRACE_INFORMATION_CLASS {
  TraceIdClass,
  TraceHandleClass,
  TraceEnableFlagsClass,
  TraceEnableLevelClass,
  GlobalLoggerHandleClass,
  EventLoggerHandleClass,
  AllLoggerHandlesClass,
  TraceHandleByNameClass,
  LoggerEventsLostClass,
  TraceSessionSettingsClass,
  LoggerEventsLoggedClass,
  DiskIoNotifyRoutinesClass,
  TraceInformationClassReserved1,
  FltIoNotifyRoutinesClass,
  TraceInformationClassReserved2,
  WdfNotifyRoutinesClass,
  MaxTraceInformationClass
} TRACE_INFORMATION_CLASS;

Constants


`TraceIdClass` Retrieves the logger ID (ULONG) of an event tracing session given a caller-supplied Wnode.
`TraceHandleClass` Retrieves a trace handle (TRACEHANDLE) for an event tracing session given a caller-supplied logger ID (ULONG).
`TraceEnableFlagsClass` Retrieves the enable flags (ULONG) set on a caller-supplied event trace handle (TRACEHANDLE).
`TraceEnableLevelClass` Retrieves the enable level (ULONG) set on a caller-supplied event trace handle (TRACEHANDLE).
`GlobalLoggerHandleClass` Retrieves an event trace handle (TRACEHANDLE) for the global logger.
`EventLoggerHandleClass` Reserved for use by the operating system.
`AllLoggerHandlesClass` Retrieves an array of event trace handles (TRACEHANDLE array) for all valid loggers.
`TraceHandleByNameClass` Retrieves an event trace handle (TRACEHANDLE) identified by a caller-supplied friendly name (UNICODE_STRING structure in buffer).
`LoggerEventsLostClass` Retrieves the number (ULONG) of events lost for a logger session given a caller-supplied logger ID (ULONG).
`TraceSessionSettingsClass` Retrieves the settings (ETW_TRACE_SESSION_SETTINGS structure) for a logger session given a caller-supplied trace handle (TRACEHANDLE).
`LoggerEventsLoggedClass` Retrieves the number (ULONG) of events logged in a logger session given a caller-supplied logger ID (ULONG).
`DiskIoNotifyRoutinesClass` Reserved for use by the operating system.
`TraceInformationClassReserved1` Reserved for use by the operating system.
`FltIoNotifyRoutinesClass` Reserved for use by the operating system.
`TraceInformationClassReserved2` Reserved for use by the operating system.
`WdfNotifyRoutinesClass` Reserved for use by the operating system.
`MaxTraceInformationClass` The maximum value in this enumeration type.

Remarks

TRACE_INFORMATION_CLASS is provided primarily for use with the WmiQueryTraceInformation routine, which returns information about a WMI event tracing session.

Requirements

Requirement	Value
Header	wdm.h (include Wdm.h, Ntddk.h, Ntifs.h)

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