Consider an online auction system where the current highest bid for each item must be maintained. A person who wishes to bid on an item calls the bid(amount) function, which compares the amount being bid to the current highest bid. If the amount exceeds the current highest bid, the highest bid is set to the new amount. This is illustrated below: void bid(double amount) { if (amount > highestBid) highestBid = amount; } Describe how a race condition is possible in this situation and what might be done to prevent the race condition from occurring. Based on the solution you describe, rewrite the bid function that can solve the problem.
Consider an online auction system where the current highest bid for each item must be maintained. A person who wishes to bid on an item calls the bid(amount) function, which compares the amount being bid to the current highest bid. If the amount exceeds the current highest bid, the highest bid is set to the new amount. This is illustrated below: void bid(double amount) { if (amount > highestBid) highestBid = amount; } Describe how a race condition is possible in this situation and what might be done to prevent the race condition from occurring. Based on the solution you describe, rewrite the bid function that can solve the problem.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
Consider an online auction system where the current highest bid for each item must be maintained. A person who wishes to bid on an item calls the bid(amount) function, which compares the amount being bid to the current highest bid. If the amount exceeds the current highest bid, the highest bid is set to the new amount.
This is illustrated below:
void bid(double amount) {
if (amount > highestBid)
highestBid = amount;
}
Describe how a race condition is possible in this situation and what might be done to prevent the race condition from occurring. Based on the solution you describe, rewrite the bid function that can solve the problem.
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