What is preemption / What is a preemtible kernel? What is it good for?
Explained in your own words, what is preemption and what does it mean to a (linux) kernel? What are advantages and disadvantages in having a preemptible kernel? ...
preemption
Context switches in control paths of a non-preemptive kernel (Linux)
The Linux kernel is non-preemptive, but I just read that there could be context-switches in different control paths. Doesn't that contradict the non-preemptive nature on the Linux kernel? ...
How does a VxWorks scheduler get executed?
Hello All, Would like to know how the scheduler gets called so that it can switch tasks. As in even if its preemptive scheduling or round robin scheduling - the scheduler should come in to picture to do any kind of task switching. Supposing a low priority task has an infinite loop - when does the scheduler intervene and switch to a high...
How to set a time limit on a function with a secure area
Hi, I'm trying to develop a program to time limit the execution of a function. In the code below I have a function named Inc which does a lot of iterations (simulated by the infinite loop). The first part of each iteration is quite long, followed by a second part that should be pretty fast. I don't mind preempting the execution while i...
How to limit the execution time of a function in C/POSIX?
Similar to this question, I'd like to limit the execution time of a function--preferably with microsecond accuracy--in C. I imagine that C++ exceptions could be used to achieve a result similar to this Python solution. Though it's not ideal, such an approach is wholly unavailable in plain C. I wonder, then, how might I interrupt the exe...