| UID | tech.root | title | ms.date | targetos | description | prerelease | req.assembly | req.construct-type | req.ddi-compliance | req.dll | req.header | req.idl | req.include-header | req.irql | req.kmdf-ver | req.lib | req.max-support | req.namespace | req.redist | req.target-min-winverclnt | req.target-min-winversvr | req.target-type | req.type-library | req.umdf-ver | req.unicode-ansi | topic_type | api_type | api_location | api_name | f1_keywords | dev_langs | helpviewer_keywords | ||||||||
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NF:d3dkmthk.D3DKMTDestroyDoorbell |
display |
D3DKMTDestroyDoorbell |
05/22/2023 |
Windows |
Learn more about the D3DKMTDestroyDoorbell function. |
true |
function |
d3dkmthk.h |
WIN11_FUTURE |
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D3DKMTDestroyDoorbell destroys a doorbell object.
[in] Pointer to a D3DKMT_DESTROY_DOORBELL structure that identifies the hardware queue whose doorbell is to be destroyed.
D3DKMTDestroyDoorbell returns STATUS_SUCCESS when the OS successfully destroys the doorbell object. If hDoorbell points to a valid doorbell, then this call always succeeds; otherwise it returns STATUS_INVALID_PARAMETER.
When UMD calls D3DKMTDestroyDoorbell, the OS does the following:
- Removes its reference to hRingBuffer and to hRingBufferControl allocations belonging to this doorbell.
- Frees the mapping that pDoorbellStatusCPUVirtualAddress points to.
- Frees both the user-mode and kernel-mode mappings that pDoorbellCPUVirtuslAddress points to.
- Calls KMD's [DxgkDdiDestroyDoorbell] so that KMD can disconnect the physical doorbell location and destroy its doorbell objects.
The UMD must not use the handle after calling D3DKMTDestroyDoorbell.