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of Q Release A Pand Q want A Release Required B Get A 3 Deadlock inevitable Pand Q want B Required Get B 6. Get A Release A Release B Progress of P Get B 2 = Both P and Q want resource A A = Both P and Q want resource B Required B Required = Deadlock-inevitable region = Possible progress path of Pand Q. Horizontal portion of path indicates Pis executing and Q is waiting. Vertical portion of path indicates Q is executing and Pis waiting.

of Q Release A Pand Q want A Release Required B Get A 3 Deadlock inevitable Pand Q want B Required Get B 6. Get A Release A Release B Progress of P Get B 2 = Both P and Q want resource A A = Both P and Q want resource B Required B Required = Deadlock-inevitable region = Possible progress path of Pand Q. Horizontal portion of path indicates Pis executing and Q is waiting. Vertical portion of path indicates Q is executing and Pis waiting.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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  1. Which concurrency mechanism would you suggest that might prevent the deadlock situation above? Rationalize answer.
  2. Do Execution Paths 3 and 4 encompass the first three conditions for a deadlock to occur? Explain your answer. 
Progress of Q Release A P and Q want A Required Release B Get A 3 Deadlock inevitable Pand Q B Required want B Get B Get A Progress of P Get B Release A Release B = Both P and Q want resource A A = Both P and Q want resource B Required B Required = Deadlock-inevitable region = Possible progress path of P and Q. Horizontal portion of path indicates P is executing and Q is waiting. Vertical portion of path indicates Q is executing and Pis waiting.
Transcribed Image Text:Progress of Q Release A P and Q want A Required Release B Get A 3 Deadlock inevitable Pand Q B Required want B Get B Get A Progress of P Get B Release A Release B = Both P and Q want resource A A = Both P and Q want resource B Required B Required = Deadlock-inevitable region = Possible progress path of P and Q. Horizontal portion of path indicates P is executing and Q is waiting. Vertical portion of path indicates Q is executing and Pis waiting.
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