how to create a buffers Queue in nonpagedpool

NTDEV
1

hi all
i am trying to create a device which maintains a fifo inside it of buffers.
I am trying to keep the queue of buffers in the kernel mode.

  1. How can i make it sure that it doesnot paged out .
  2. How to share that fifo with other driver.

There is no physical device just the Queue being maintained which is given the data from application program.

Thanks in advance
shishir

2

Allocate queue elements using ExAllocPool(NonPaged, …).You might also use
the look aside calls to maintain a “pool” of buffers and then use the
ExInterlockedXxxxList commands to housekeep the list.

-----Original Message-----
From: sak [mailto:xxxxx@hpsblr.soft.net]
Sent: Tuesday, September 19, 2000 6:58 AM
To: NT Developers Interest List
Subject: [ntdev] how to create a buffers Queue in nonpagedpool

hi all
i am trying to create a device which maintains a fifo inside it of buffers.
I am trying to keep the queue of buffers in the kernel mode.

  1. How can i make it sure that it doesnot paged out .
  2. How to share that fifo with other driver.

There is no physical device just the Queue being maintained which is given
the data from application program.

Thanks in advance
shishir

3

>1. How can i make it sure that it doesnot paged out .

Allocate it from nonpaged memory.

  1. How to share that fifo with other driver.

Pass the pointer via IOCTL.

Max