Two processes, P1 and P2, need to access a critical section of code. Consider the following synchronization construct used by the processes:Here, wants1 and wants2 are shared variables, which are initialized to false. Which one of the following statements is TRUE about the above construct? /* P1 */ while (true) { wants1 = true; while (wants2 == true); /* Critical Section */ wants1=false; } /* Remainder section */ /* P2 */ while (true) { wants2 = true; while (wants1==true); /* Critical Section */ wants2 = false; } /* Remainder section */
מערכות הפעלה מערכות הפעלה
Two processes, P1 and P2, need to access a critical section of code. Consider the following synchronization construct used by the processes:Here, wants1 and wants2 are shared variables, which are initialized to false. Which one of the following statements is TRUE about the above construct? /* P1 */ while (true) { wants1 = true; while (wants2 == true); /* Critical Section */ wants1=false; } /* Remainder section */ /* P2 */ while (true) { wants2 = true; while (wants1==true); /* Critical Section */ wants2 = false; } /* Remainder section */
1
| done |
The above synchronization constructs don’t prevent deadlock. When both wants1 and wants2 become true, both P1 and P2 stuck forever in their while loops waiting for each other to finish.
מיין לפי
* השאלה נוספה בתאריך: 20-07-2020