1. Write a program that uses UNIX system calls to "ping-pong" a byte between two processes overa pair of pipes, one for each direction. Measure the program's performance, in exchanges persecond.2. Answer Memory Allocation Question belowvoid func() {int x; // declares an integer on the stack}void func() {int x = (int) malloc(sizeof (int));}#include void malloc(size_t size);double d = (double *) malloc(sizeof (double));int x = malloc (10+ sizeof(int));printf("%d\n", sizeof(x));Note: allocating and freeing memory isfraught with possible errors.Can you explain?See text section 14.4 for importantcaveats.int x[10];printf("%d\n", sizeof(x));

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1. Write a program that uses UNIX system calls to "ping-pong" a byte between two processes over a pair of pipes, one for each direction. Measure the program's performance, in exchanges per second.

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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Concept explainers

Types Of Protocols

A network protocol is a collection of rules that governs the exchange of data between devices connected to the same network. In other words, network protocols are rules that specify how devices communicate or transfer data over a network. The sender and receiver systems must obey the standards to facilitate communication between them.

Question

1. Write a program that uses UNIX system calls to "ping-pong" a byte between two processes over
a pair of pipes, one for each direction. Measure the program's performance, in exchanges per
second.
2. Answer Memory Allocation Question below
void func() {
int x; // declares an integer on the stack
}
void func() {
int x = (int) malloc(sizeof (int));
}
#include <stdlib.h>
void malloc(size_t size);
double d = (double *) malloc(sizeof (double));
int x = malloc (10+ sizeof(int));
printf("%d\n", sizeof(x));
Note: allocating and freeing memory is
fraught with possible errors.
Can you explain?
See text section 14.4 for important
caveats.
int x[10];
printf("%d\n", sizeof(x));

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