One of the approaches to enforce mutual exclusion is the hardware approach. a) Briefly explain why...
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One of the approaches to enforce mutual exclusion is the hardware approach. a) Briefly explain why interrupt must be disabled on all processors in a multiprocessor system to enforce mutual exclusion. b) Considering the following implementation of exchange instruction, briefly explain what would happen if the highlighted line (bolt 0;) is missed out or failed. int bolt; void P(int i) { while(true){ } } int keyi 1; do exchange (&keyi, &bolt) = while (keyi != 0); // critical section; bolt = 0; // remainder; void main() { bolt = 0; parbegin (P(1), P(2),... P(n)); One of the approaches to enforce mutual exclusion is the hardware approach. a) Briefly explain why interrupt must be disabled on all processors in a multiprocessor system to enforce mutual exclusion. b) Considering the following implementation of exchange instruction, briefly explain what would happen if the highlighted line (bolt 0;) is missed out or failed. int bolt; void P(int i) { while(true){ } } int keyi 1; do exchange (&keyi, &bolt) = while (keyi != 0); // critical section; bolt = 0; // remainder; void main() { bolt = 0; parbegin (P(1), P(2),... P(n));
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In a multiprocessor system multiple processors can execute instructions concurrently To enforce mutu... View the full answer
Related Book For
Fundamentals of Investing
ISBN: 978-0133075359
12th edition
Authors: Scott B. Smart, Lawrence J. Gitman, Michael D. Joehnk
Posted Date:
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