| Min version | 8.1 | 10 Pre RTM |
|---|---|---|
| Max version | 8.1 Update 1 | 10 TH2 |
| x64 offset offset:bitpos | Field Name | |
| 0x0000:0x00 | uint64_t Waiting | uint64_t CrossThreadReleasable |
| 0x0000 | void * LockState | |
| 0x0000:0x01 | uint64_t Busy | |
| 0x0000:0x02 | uint64_t Spare | uint64_t Reserved |
| 0x0000:0x3F | uint64_t InTree | |
| 0x0008 | void * SessionState | |
| 0x0008 | unsigned long SessionId | |
| 0x000C | unsigned long SessionPad | |