How does context switching work?

Hi, I want to learn more about how context switching works in RTEMS. I saw the following lines in theaddispatch.c: _Thread_Save_fp( executing ); _Context_Switch( &executing->Registers, &heir->Registers ); _Thread_Restore_fp( executing ); I do not understand how it works. Here, the ex

Re: How does context switching work?

On Sat, Oct 31, 2020, 10:51 AM Richi Dubey wrote: > Hi, > > I want to learn more about how context switching works in RTEMS. I saw the > following lines in theaddispatch.c: > > _Thread_Save_fp( executing ); > _Context_Switch( &executing->Registers, &heir->Registers ); > _Thread_Restor

Re: How does context switching work?

Richi,inside the contextswitch function, the current context ist suspended (so it is stuck/frozen die nside the context switch code) and execution switches to a different task. When the first task is reactivated, it leaves the contextswitch function. Therefore all the code around the context switch