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));

According to Bartleby Guidelines we need to answer only one question so I have answered first…

Answered: 1. Write a program that uses UNIX…

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

See similar textbooks

Similar questions

As we know that assembly language is always a good choice for hardware, so that we want to write an assembly language program to operate our AC in this summer. The program should follow the given steps: • Take user's input in the Fahrenheit unit • Perform temperature unit conversion from Fahrenheit into the Celsius unit, by usingthe signedarithmetic expression Celsius= (Fahrenheit- 32) *5/9 • Implementthe given pseudocode into your program if UserTemp > ThresholdTemp then call SwitchON else call SwitchOFF end if
3. Write a program to add multi bytes (16-bit wide), the source address in SI = 0500H and the destination address in DI = 0508H.
Using the Assembly Language Programming of 8086, write and simulate a program that adds two data 0010h and 0010h, and would only stop adding when it gets a result of 0100h. Go over each line of the code. Write your explanation of what each line does as a comment after the line
Write a Pep/8 assembly language program that lets the user enter two characters, and tells the user how far apart they are in the alphabet (If the entered M and P it should display 3 --- if they enter P and M it should display -3 ....... should enter both characters on one line ("MP") ??
Your friend Numero tells you about a new programming language called V. The main feature of V they're excited about is that instead of the fixed-width numerical representations used in C (2's complement, IEEE floating point), V uses variable-width numbers. Numero explains that variable-width numbers use however many bits it takes to accurately represent the number in question. Assuming V is running on x86-64 systems like those we have studied, consider the benefits and downsides of the variable-width approach. Why might we want to use a language like that? Why might it be a bad idea? Enter your answer here
Write a language assembly software that prints on a computer your first name. Use a decimal constant immediate address to assign the LDBA operand for each letter of your name. Please use the program's LDWA operand.
CAN U SOLVE THIS PROBLEM WITH PROTEUS?
Semaphores can be used as a general-purpose synchronization tool. Suppose statement B in process P1 can be executed only after statement A in P2. Use a semaphore named S to show how such synchronization is to be carried out, by showing the structure of both P1 and P2. You need to decide the initial value of S to synchronize that way
Write a C program that emulates the logic of the memory management unit (MMU). The following are the requirements for the program: a.Prompt the user for a decimal number that will be used as the page size. Valid page sizes can either be 4095 (4K bytes) or 8191 (8K bytes). b.Display the page size to the console as a 16-bit binary number that displays each binary digit as a 1 or 0 with the least significant bit on the right side of the output. Also display the page size to the console as a hexadecimal number. c.Emulate a page table using a C array that supports the user specified page table size (you may create C arrays to handle a page table for both page sizes). The page table should represent a virtual memory address space of 1M bytes (0x000FFFFF) with a system that has a physical memory address size of 512K bytes (0x7FFFF), which is located at 0x00000000 and 0x0007FFFF. Populate the page table with the appropriate page table entries to support the specified page size and the…
Find the Checksum value of the given header of the datagram 4. 5. 10 4 4. 10.10.10.1 5.5.5.1
1. Draw a flowchart for a program that reads a value from memory at an address labeled Info1, multiplies it by three, adds one if and only if the result of the multiplication is odd, then (regardless of if it's odd or even) stores it back to a memory address labeled Info2. (Ask yourself: is there a simple check I can do to see if a binary value is odd or even?) 2. Convert the flowchart provided below to lines of code (one line per box in the chart) to write a program that does the following tasks four times: reads a one-byte value from an array that starts at the label Info3, adds seven to it, then stores it back to the address from which it was read. Note that you should be reading from a different address each time through the loop as you index through the array.
Write a program to multiply the contents of the RAM location Ox600 by the contents of the RAM location Ox601 and store the lower and the higher bytes of t the RAM locations Ox500 and Ox501 simultaneously 0x600 MUL R1 R16, R10, R16 0x500, Ox501, IN R10 R16 LDS 10 RO 0x601 STS OUT LDI