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Hello guys i have question When a process is entering the critical region one way to stop other processes to enter the same critical region is to disable the interupts My problem is: Ok we disable the interrupts so the hardware can no longer stop this procces but if the sceduler says "ok i am stopping you so i can run another procces" and this new process enters the same critical region then we have a problem because this procces is going to enter the same critical region.What happens when this happens? Thank you!

Laur155 155
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  • How can the scheduler run another process when the scheduler is only entered after a timer interrupt, and you have disabled interrupts? (I’m assuming a single core CPU). But anyway you answered your own question by using the term Mutual exclusion (mutex). Go look at mutex in your RTOS documentation. – DisappointedByUnaccountableMod Mar 17 '18 at 23:05
  • Thanks you answer it – Laur155 155 Mar 18 '18 at 08:06

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