IWDFInterrupt::QueueWorkItemForIsr method (wudfddi.h)

[Warning: UMDF 2 is the latest version of UMDF and supersedes UMDF 1. All new UMDF drivers should be written using UMDF 2. No new features are being added to UMDF 1 and there is limited support for UMDF 1 on newer versions of Windows 10. Universal Windows drivers must use UMDF 2. For more info, see Getting Started with UMDF.]

The QueueWorkItemForIsr method queues a work item to process interrupt-related work outside of the interrupt service routine.

Syntax

BOOLEAN QueueWorkItemForIsr();

Return value

The method returns TRUE if a work item was successfully queued. If a work item is already in the queue, the method returns FALSE.

Remarks

The driver provides a pointer to its OnInterruptWorkItem callback function when it calls IWDFDevice3::CreateInterrupt to create the interrupt object.

For more information about handling interrupts in UMDF drivers, see Accessing Hardware and Handling Interrupts.

Requirements

See also

IWDFDevice3::CreateWorkItem

IWDFInterrupt

OnInterruptWorkItem