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#include #include #include #include int counter = 0; void child(O { counter += 7; } void parent() { counter *= 2; } int main(int argc, char* argv[]) { int rc = fork(); if (rc { child(); } else // Parent Process 0) // Child Process == { int wc = wait(NULL); parent(); } }

#include #include #include #include int counter = 0; void child(O { counter += 7; } void parent() { counter *= 2; } int main(int argc, char* argv[]) { int rc = fork(); if (rc { child(); } else // Parent Process 0) // Child Process == { int wc = wait(NULL); parent(); } }

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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Question 1 : CPU Virtualization For this question, you will analyze the performance of the file processes.cin the hw1 repository. This file creates a child process with the fork () method. The child process increments the counter variable by 7. The parent process multiples this same variable by 2. Add your answers to the following questions in the file Q1-Answers.txt and commit the changed file to the repository. 1. Are you guaranteed that the child () method will run before the parent () method? Explain your answer. 2. Have both the child and parent processes print the value of the variable counter after all counter computations have completed. Are the values the same, or different? Explain why this happens. 3. Have both the child and parent processes print the value of the variable counter after all counter computations have completed. Explain how the addresses can be the same when the values of counter are different.
Transcribed Image Text:Question 1 : CPU Virtualization For this question, you will analyze the performance of the file processes.cin the hw1 repository. This file creates a child process with the fork () method. The child process increments the counter variable by 7. The parent process multiples this same variable by 2. Add your answers to the following questions in the file Q1-Answers.txt and commit the changed file to the repository. 1. Are you guaranteed that the child () method will run before the parent () method? Explain your answer. 2. Have both the child and parent processes print the value of the variable counter after all counter computations have completed. Are the values the same, or different? Explain why this happens. 3. Have both the child and parent processes print the value of the variable counter after all counter computations have completed. Explain how the addresses can be the same when the values of counter are different.
#include <stdlib.h> #include <stdio.h> #include <unistd.h> #include <sys/wait.h> int counter = 0; void child () { counter += 7; } void parent () { counter *= 2; } int main(int argc, char* argv[]) { int rc = fork(); if (rc { child(); } else // Parent Process 0) // Child Process == { int wc = wait(NULL); parent (); } }
Transcribed Image Text:#include <stdlib.h> #include <stdio.h> #include <unistd.h> #include <sys/wait.h> int counter = 0; void child () { counter += 7; } void parent () { counter *= 2; } int main(int argc, char* argv[]) { int rc = fork(); if (rc { child(); } else // Parent Process 0) // Child Process == { int wc = wait(NULL); parent (); } }
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