Give an example for each of these macros to explain its work: Macro: int WIFSIGNALED (int status) This macro returns a nonzero value if the child process terminated because it received a signal that was not handled. Macro: int WTERMSIG (int status) If WIFSIGNALED is true of status, this macro returns the signal number of the signal that terminated the child process. Macro: int WCOREDUMP (int status) This macro returns a nonzero value if the child process terminated and produced a core dump. Macro: int WIFSTOPPED (int status) This macro returns a nonzero value if the child process is stopped. Macro: int WSTOPSIG (int status) If WIFSTOPPED is true of status, this macro returns the signal number of the signal that caused the child process to stop.

Give an example for each of these macros to explain its work: Macro: int WIFSIGNALED (int status) This macro returns a nonzero value if the child process terminated because it received a signal that was not handled. Macro: int WTERMSIG (int status) If WIFSIGNALED is true of status, this macro returns the signal number of the signal that terminated the child process. Macro: int WCOREDUMP (int status) This macro returns a nonzero value if the child process terminated and produced a core dump. Macro: int WIFSTOPPED (int status) This macro returns a nonzero value if the child process is stopped. Macro: int WSTOPSIG (int status) If WIFSTOPPED is true of status, this macro returns the signal number of the signal that caused the child process to stop.

Np Ms Office 365/Excel 2016 I Ntermed

1st Edition

ISBN:9781337508841

Author:Carey

Publisher:Carey

Chapter7: Developing An Excel Application

Section: Chapter Questions

Problem 4.11CP

See similar textbooks

Similar questions

Computer Science . Create a simple virtual-machine (VM). Once implemented, the VM will be able to execute the provided 'task1.bin' program image. Executing the provided program images is a two step process. Firstly, the file must be loaded into memory. Once loaded, its contents must then be interpreted as a mix of instructions and data values. As instructions are processed output will be produced as a text file. Please refer to the VM images loading and VM images interpreting procedures (cf. VM Procedures.txt). For this exercises there is no requirement that you use any specific programming language/tools/operating systems etc. As such you may feel free to use whatever tools you feel are most appropriate. However, you should submit your solution source code and data/results. Please keep your source files neat and commented where appropriate.
The Problem: Parameterized macros can cause unexpected things to happen. Consider the following case:#define SQUARE(x) ((x) * (x))int i = 5;int j = SQUARE(i++);What's the value of j? The answer is that it's compiler dependent. And the value of i is definitely not 6. Why? Just look at the code after the macro is expanded:int j = ((i++) * (i++));From this we can see that i is increment twice. Also since the order of the operations is not specified by the C++ standard, the actual value of j is compiler dependent.
Please provide a correct approach Question: Consider the following code snippet in your main function:a = fork();b = fork();c = fork();Now, write the full program, that will check the children’s PID and if it is odd then the processwill create another child process. Lastly, print how many processes have been createdconsidering the first parent process.
1) Write a C program that fulfills the following. This entire thing is one question so please solve all parts. a) The program when executed, has both a parent process and a child process. You use the fork() system call to create a child process. b) The parent process code branch utilizes the producer algorithm for shared memory while the child process code branch makes use of the consumer algorithm for shared memory. The BUFFER_SIZE is to be accepted by your program as a command-line argument. c) The Parent Producer and Child Consumer Algorithms are to be implemented using the POSIX Shared Memory API as given in the lectures for Chapter 3 POSIX Shared Memory API. d) The Parent Process produces the file contents into shared memory as read from a source file (SRC_FILE) in chunks using read(). The chunk size (CHUNK_SIZE) is the same for both read() and write(). It will be accepted as input by your program as a command-line argument. Afterward, the parent and child process must be…
C Program: Write a program where: Your main() function must create two pipes and make them global. create two child processes. Each child process will call one of the functions defined in (2) and (3) below. wait() for a child process to end. Then, send the SIGUSR1 signal to the (2) process before ending. One function should have an integer variable that starts at 0. It should print ping: {value} then increment the value. It should write that value to a pipe and read the value back from the other pipe until the value is greater than or equal to 100. It should call exit() when complete. The other function should set up a signal handler for SIGUSR1 to call a function (defined in (4) below) when it receives that signal. It should then loop forever: read from a pipe, print pong-{value}, increment the value and write the value to the other pipe. These pipes must be opposite from the function in (2): the pipe you write to in (2) must be the pipe that you read from in (3) and vice versa.…
Problem Statement: (The following problem is based on problem statements in a number of operating systems texts) For this lab, you'll be setting up 2 queues of PCBs. A process control block (PCB) is an internal structure that is used to hold information associated with a process. A process is an instance of a program that is brought into random-access memory (RAM) for execution. To simplify matters, you'll be setting up 2 queues: a ready queue and a wait queue and, PCBs each PCB will have 2 fields: a process ID or PID (a positive integer) a link field to point to the next PCB on a queue The ready queue will have the PCBs for the processes that will be run in a first-come, first-served fashion. The wait queue will have the PCBs for the processes that will be waiting for a resource in a first-come, first-served fashion. If the PCB at the head of the ready queue needs some resource (for example, I/O) then it will be removed from the ready queue and moved to the rear of…
78. To ensure no preemption, if a process is holding some resources and requests another resource that cannot be immediately allocated to it : a. then the process waits for the resources be allocated to it b. the process keeps sending requests until the resource is allocated to it c. the process resumes execution without the resource being allocated to it d. then all resources currently being held are preempted
Write a program where:A. Function main:1. Creates two pipes and makes them global.2. Creates two processes. Each process should call a function defined in (B) and (C) below.3. Sends the SIGUSR1 signal to the (C) process before ending. B. One function should have an integer variable that starts at 0. It should print “ping – <value>” then increment the value. It should write that value to a pipe and read the value back from the other pipe until the value is greater than or equal to 100. It should call exit() when complete. C. The other function should set up a signal handler for SIGUSR1 to call a function (defined in (D) below) when it receives that signal. It should then loop forever: read from a pipe, print “pong - <value>”, increment the value and write the value to the other pipe. These pipes must be opposite from the function in (B) – the pipe you write to in (B) must be the pipe that you read from in (C) and vice versa. D. Create a function for the signal handler that…
Please explain step by step how processes are created. 1. Including the parent process, how many processes are created by the following program? Assumethat all fork() system calls succeed. #include <unistd.h>#include <stdio.h>int main(int argc, char **argv) {for (int i = 0; i < 3; i++)fork();/* ... */}2. Given the following program, please determine how many times the word “hello” is printed out.Assume that fork() is always successful. #include <sys/types.h>#include <stdio.h>int main() {pid_t a, b;a = fork();b = fork();if (a == 0)b = fork();if (b == 0)a = fork();printf(“hello\n”);return 0;} 2. Given the following program, please determine how many times the word “hello” is printed out.Assume that fork() is always successful. [1 pt]#include <sys/types.h>#include <stdio.h>int main() {pid_t a, b;a = fork();b = fork();if (a == 0)b = fork();if (b == 0)a = fork();printf(“hello\n”);return 0;}
56. In the multiprogramming system, a set of processes is deadlock if each process in the set is waiting for an event to occur that can be initialized only by another process in the set. Which of the following is not one of the four conditions that are necessary for deadlock to occur? a. nonpreemption b. process suspension c. partial assignment of resources d. circular wait
In the study of assemblers what is a macro command? What is an example of macro command? When we should program a function, and when we should program a macro command?
Write a c program called file1.c Program file1.c uses these: (a) fork() to launch another process. (b) exec() to replace the program driving this process, while supplying arguments to file2.c to complete its execution. (c) wait() to complete the execution of the child process. (d) file1.c takes two arguments x( a number less than 1) and n (number of terms to be added, 1 or more). For example: file1 0.5 5 (e) When the child process finishes, the parent prints: Parent(PID=yyy) : Done