CODEWITHSUNDEEP
c++linuxpthreadsscheduling
Aerol
Aerol

Reputation: 95

Scheduling threads within a process

Say I have a process with 4 threads, and I want them to run according to specific scheduling algorithm. I searched and found pthread_setschedparam and sched_setschedparam functions for selecting an algorithm and setting priorities of a thread, but I saw one thing that was unclear - pthread_setschedparam takes a thread name and sets it's own scheduling policy. What does that mean specifically, since I thought all threads within a process are scheduled according to one policy, which is set for the entire process. Does that mean then that if I use sched_setschedparam and set a policy (since it refers to a process via it's PID) it will ensure that threads within that process run according to selected scheduling policy?

Code I'm writing is for Linux, I was using boost but had to resort to pthreads for this part.

Upvotes: 4

Views: 2295

Answers (1)

Kerrek SB
Kerrek SB

Reputation: 477040

pthread_setschedparam sets the scheduling parameters for a single thread. sched_setscheduler sets the scheduling parameters for an entire process. Different threads can indeed have different scheduling policies.

Upvotes: 4

Related Questions