artem-yazkov/kqueue

kernel queue

Kernel Queue test module

BUILD HOWTO:

• Compile sources: make

• Load kernel module: insmod ./kqueue.ko

  you can use module arguments:

  1. cache_storage: file to cache queue messages; default value: /tmp/kqueue-cache
  2. cache_async: use async cache algorithm; default value: 0

  When the module loaded, you can see at syslog: kqueue: initialized properly (async: off)

  ... and look into /dev directory: ls -la /dev/kqueue*

• Now, start pop daemon with root privilegies: ./kqueue-popd

  to show available options: ./kqueue-popd --help

• Finally, push something into queue. Run with root: ls *.c | ./kqueue-push

• Just check content of files: popmsg-*

• P.S. You can work with queue without userspace programs. Stop pop daemon & type something like this:

  1. echo "first message"| sudo tee /dev/kqueue-push
  2. echo "second message"| sudo tee /dev/kqueue-push
  3. sudo cat /dev/kqueue-pop
  4. sudo cat /dev/kqueue-pop