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NF:wdm.IoAdjustPagingPathCount |
IoAdjustPagingPathCount macro (wdm.h) |
The IoAdjustPagingPathCount routine increments or decrements a caller-supplied page-file counter as an atomic operation. |
kernel\ioadjustpagingpathcount.htm |
kernel |
04/30/2018 |
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IoAdjustPagingPathCount, IoAdjustPagingPathCount routine [Kernel-Mode Driver Architecture], k104_f52acd6d-f3f6-43c2-a339-3060a12a6298.xml, kernel.ioadjustpagingpathcount, wdm/IoAdjustPagingPathCount |
wdm.h |
Wdm.h, Ntddk.h, Ntifs.h |
Desktop |
Available starting with Windows 2000. |
Any level |
Windows |
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The IoAdjustPagingPathCount routine increments or decrements a caller-supplied page-file counter as an atomic operation.
Pointer to a caller-supplied variable that contains a counter. A driver typically stores a page-file counter in the device extension for the device.
Specifies whether the counter is to be incremented or decremented. A value of TRUE specifies an increment operation.
This routine is useful for maintaining a count of paging files on a device. The operating system notifies a driver that a paging file has been created on, or removed from, one of the driver's devices by sending an IRP. The IRP has the major code IRP_MJ_PNP and the minor code IRP_MN_DEVICE_USAGE_NOTIFICATION.
This routine can be used for other counters, such as counters for hibernation files or crash-dump files.