Question

In: Computer Science

eadlock cannot occur

It was stated that deadlock cannot occur for the situation reflected in Figure. Justify that statement.

It was stated that deadlock cannot occur for the situation

Solutions

Expert Solution

If Q acquires B and A before P requests A, then Q can use these two resources and then release them, allowing A to proceed. If P acquires A before Q requests A, then at most Q can proceed to the point of requesting A and then is blocked. However, once P releases A, Q can proceed. Once Q releases B, A can proceed.


A, Q can proceed. Once Q releases B, A can proceed.

Related Solutions

Why can or cannot perfectly elastic collisions ever occur in nature??
Why can or cannot perfectly elastic collisions ever occur in nature??
4. During what phase of meiosis does crossing-over occur? Give a reason why it cannot occur...
4. During what phase of meiosis does crossing-over occur? Give a reason why it cannot occur during the following phase (the phase immediately after the phase you chose for the first part of your answer).
1 Two events are mutually exclusive if they cannot occur at the same time. True False...
1 Two events are mutually exclusive if they cannot occur at the same time. True False 2. An apartment building has the following apartments: 1 bedroom 2 bedroom 3 bedroom 1st floor 3 1 1 2nd floor 2 2 2 3rd floor 1 4 1 If an apartment is selected at random, what is the probability that it is not a 2 bedroom apartment on the 2nd floor? 2/15 2/7 11/15 15/17 3. What probability value would be needed to...
1) Some events cannot occur together because the occurrence of one event makes the occurrence of...
1) Some events cannot occur together because the occurrence of one event makes the occurrence of the second event impossible. Such events are called A) dependent events. B) independent events. C) conditional events. D) mutually exclusive events. 2) An insurance company estimates its objective risk for 10,000 exposures to be 10 percent. Assuming the probability of loss remains the same, what would happen to the objective risk if the number of exposures were to increase to 1 million? A) It...
What is meant by the statement: An inner sphere electron transfer process cannot occur faster than...
What is meant by the statement: An inner sphere electron transfer process cannot occur faster than the slowest substitution process for both the reductant and the oxidant.
suppose given the three pairwise independent events, all three of which cannot simultaneously occur. Assuming that...
suppose given the three pairwise independent events, all three of which cannot simultaneously occur. Assuming that they all have the same probability x , determine the largest possible value of x.
suppose given the three pairwise independent events, all three of which cannot simultaneously occur. Assuming that...
suppose given the three pairwise independent events, all three of which cannot simultaneously occur. Assuming that they all have the same probability x , determine the largest possible value of x. plz give the steps thx
Olestra cannot be metabolized, thereby adding calories, because... a) it cannot be reduced due to the...
Olestra cannot be metabolized, thereby adding calories, because... a) it cannot be reduced due to the aromaticity of the central group. b) it undergoes condensation to form an ester. c) it can't be oxidized since it is a tertiary alcohol. d) it has so many ester units clustered together that it is too crowded to be hydrolyzed.
What must occur for both taste and smell to occur?
What must occur for both taste and smell to occur?
The goal of maximizing shareholder wealth cannot ignore corporate responsibility to social issues and cannot operate...
The goal of maximizing shareholder wealth cannot ignore corporate responsibility to social issues and cannot operate without ethical standards. Eventually, long-term abuse and irresponsible corporate social behavior will negatively impact the overall value of the firm. The financial crisis of 2008 saw the end of many financial institutions such as Bear Stearns, Lehman Brothers and Washington Mutual. What was the main cause of this financial meltdown and how could have it been avoided?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT