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UMS_SCHEDULER_STARTUP_INFO structure (winbase.h)

  • Article

Specifies attributes for a user-mode scheduling (UMS) scheduler thread. The EnterUmsSchedulingMode function uses this structure.

Warning

As of Windows 11, user-mode scheduling is not supported. All calls fail with the error ERROR_NOT_SUPPORTED.

Syntax

typedef struct _UMS_SCHEDULER_STARTUP_INFO {
  ULONG                      UmsVersion;
  PUMS_COMPLETION_LIST       CompletionList;
  PUMS_SCHEDULER_ENTRY_POINT SchedulerProc;
  PVOID                      SchedulerParam;
} UMS_SCHEDULER_STARTUP_INFO, *PUMS_SCHEDULER_STARTUP_INFO;

Members

UmsVersion

The UMS version for which the application was built. This parameter must be UMS_VERSION.

CompletionList

A pointer to a UMS completion list to associate with the calling thread.

SchedulerProc

A pointer to an application-defined UmsSchedulerProc entry point function. The system calls this function when the calling thread has been converted to UMS and is ready to run UMS worker threads. Subsequently, it calls this function when a UMS worker thread running on the calling thread yields or blocks.

SchedulerParam

An application-defined parameter to pass to the specified UmsSchedulerProc function.

Requirements

Requirement Value
Minimum supported client Windows 7 [desktop apps only]
Minimum supported server Windows Server 2008 R2 [desktop apps only]
Header winbase.h (include Windows.h)