is a comprehensive book on getting a job at a top tech company, while focuses on dev interviews and does this for PMs.
CareerCup's interview videos give you a real-life look at technical interviews. In these unscripted videos, watch how other candidates handle tough questions and how the interviewer thinks about their performance.
Most engineers make critical mistakes on their resumes -- we can fix your resume with our custom resume review service. And, we use fellow engineers as our resume reviewers, so you can be sure that we "get" what you're saying.
Our Mock Interviews will be conducted "in character" just like a real interview, and can focus on whatever topics you want. All our interviewers have worked for Microsoft, Google or Amazon, you know you'll get a true-to-life experience.
The process which is waiting for its turn (on context switch) is already at the Queue of Runnable process. the mechanism to schedule process execution sequence is implemented while the process goes for waiting or sleep in short leaves the Running queue.
- rnavale1 April 01, 2015So it atomically depends on the "time takes to switch context of current process and the context of the process at the top of runnable queue.
The "switch function" written in the kernel is implemented mostly using mutex/futexe/spin lock which does not allow any other process to interrupt this method nor any interrupt can break this mutex or atomic function.
indeed the "context switch" is atomic hence O(1) complexity ...even for Thread switching