Peripheral call dropping events

I'm writing a basic device manager that loads a driver for any peripheral that is attached or gets attached to a computer, this part works well, the issue I'm having is that events seem to be dropped during the peripheral call method, specifically I'm using a timer event to mediate my kernel execution and it disappears, I'm curious if this is by design, (like sleep ect) or if I'm being stupid.

Can you post your code? You can put it on pastebin and put a link here if its more than a few hundred lines

It's by design, but it's by the design of whoever created the peripheral. Not all peripheral calls do it.

Ah that's disappointing not sure how to work around events randomly dropping

The parallel API is the way to go in this sort of situation. This thread has an example of the sort of code you'd use.