3 Processes, Exceptions and Signals A parent process fork()ed a child process to create some large object The child process wants to give the object back to the parent Can this easily be done by signals If yes, say how If no, say why not and give an alternative A parent process fork()s a child process The child continues running the same program as the parent (it does not do a execl() or similar system call) Is the best way that the parent can give a data structure created before the fork() to the child by writing it to a file and having the child read that file If so, why If not, why not Let us say you write a program to measure how quick a person's fingers are by trapping SIGINT and then asking them to pressCtrl C as rapidly as possible The SIGINT signal handler increments a global counter every time Ctrl C is typed After a predefined time it stops and prints the global counter divided by the time used What is a fundamental problem with this program

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Question: 3. Processes, Exceptions and Signals A parent process fork()ed a child process to create some large object. The child process wants to give the object

3. Processes, Exceptions and Signals

A parent process fork()ed a child process to create some large object. The child process wants to give the object back to the parent. Can this easily be done by signals? If yes, say how:

If no, say why not and give an alternative:
A parent process fork()s a child process. The child continues running the same program as the parent (it does not do a execl() or similar system call). Is the best way that the parent can give a data structure created before the fork() to the child by writing it to a file and having the child read that file?

If so, why? If not, why not?
Let us say you write a program to measure how quick a person's fingers are by trapping SIGINT and then asking them to pressCtrl-C as rapidly as possible. The SIGINT signal handler increments a global counter every time Ctrl-C is typed. After a predefined time it stops and prints the global counter divided by the time used. What is a fundamental problem with this program?

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