This is a code for a program named "FRK". (a) What is the total number of processes (excluding the bash) that will run on the system from executing this program (b) draw the process tree of this program (assuming that code line #19 is being executed) (c) write down the program outputs (assuming all processes have finished executing)
This is a code for a program named "FRK". (a) What is the total number of processes (excluding the bash) that will run on the system from executing this program (b) draw the process tree of this program (assuming that code line #19 is being executed) (c) write down the program outputs (assuming all processes have finished executing)
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...
Related questions
Question
This is a code for a
(a) What is the total number of processes (excluding the bash) that will run on the system from executing this program
(b) draw the process tree of this program (assuming that code line #19 is being
executed)
(c) write down the program outputs (assuming all processes have
finished executing)
(d) give two reasons of why having child_pid to capture
the return value of the fork()
![1#include <stdio.h>
2 #include <unistd.h>
3 #include <sys/types.h>
4
5 int main()
6 {
pid_t child_pid;
child_pid
fork();
if (child_pid != 0)
{
fork();
printf ("A\n");
sleep (100);
}
else
{
sleep (1);//so that the parent will execute first
char* arg_list[] = {"uname","-s", NULL}; //-s, -kernel-name
execvp ("uname", arg_list);
fork();
printf ("B\n");
}
printf ("C\n");
return 0;
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25}](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fed42fcd9-b096-4a17-a382-621e716f219f%2F2f6247ee-ad08-43f9-b0aa-13afa53f4451%2F3meqyds_processed.png&w=3840&q=75)
Transcribed Image Text:1#include <stdio.h>
2 #include <unistd.h>
3 #include <sys/types.h>
4
5 int main()
6 {
pid_t child_pid;
child_pid
fork();
if (child_pid != 0)
{
fork();
printf ("A\n");
sleep (100);
}
else
{
sleep (1);//so that the parent will execute first
char* arg_list[] = {"uname","-s", NULL}; //-s, -kernel-name
execvp ("uname", arg_list);
fork();
printf ("B\n");
}
printf ("C\n");
return 0;
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25}
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