4. Explain the code. Which process will execute first and why? semaphore s = 0; //Shared P1 { P2 { /* some code */ /* some code */ Wait(s); Signal (s); /* do some more code */ /* do some more code */

4. Explain the code. Which process will execute first and why? semaphore s = 0; //Shared P1 { P2 { /* some code / / some code / Wait(s); Signal (s); / do some more code / / do some more code */

Name: 4. Explain the code. Which process will execute first and why?semapho
Uploaded: 2024-03-20T06:51:23.000Z
Channel: Bartleby
Description: 4. Explain the code. Which process will execute first and why?semaphore s = 0; //SharedP1 {P2 {/* some code *//* some code */Wait(s);Signal (s);/* do some more code *//* do some more code */Answer

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

In C++ language Magic Decoder Ring. A one-time pad is a coding device that uses each character of a key string only once to encode and decode a corresponding character in a message string. Thus, the first character in the key is used to encode and decode the first character in the clear message, the second character in the key is used with the second character in the message, etc. No portion of the key is reused in subsequent messages, making for a very solid coding system, assuming a randomly generated key. You will need to create a class titled MagicDecoderRing that contains the variables and functions needed for obtaining the clear and key texts, encoding and decoding the messages, writing out the encoded message etc. You will need to instantiate an instance of this class in your main function to run your program and encode and decode messages. You need to further break your MagicDecoderRing code down into many small functions that each can be described with a single sentence…
C++ LANGUAGE Dynamic Memory Allocation Practice I Write a program that swaps the values of X and Y with malloc. Output Before swap X:412 Before swap Y: 623 After swap X: 623 After swap Y:·412
Code in C Code in the file IO: /************************************************************* This program prints a degree-to-radian table using a for- loop structure. The results are printed to a file and the the screen. *************************************************************/ #include <stdio.h> #define PI 3.141593 #define FILENAME "tableD2R.dat" int main(void) { /* Declare variables. */ double radians; FILE *fileout; /* Open file. */ fileout = fopen(FILENAME,"w"); if (fileout == NULL) printf("Error opening input file. \n"); else { /* Print radians and degrees in a loop. */ printf("Degrees to Radians \n"); for (int degrees=0; degrees<=360; degrees+=10) { radians = degrees*PI/180; printf("%6i %9.6f \n",degrees,radians); fprintf(fileout,"%6i %9.6f \n",degrees,radians); } /* Exit program. */ }
CPU Priority Scheduling-preemptive: Write a Java program to implement a priority scheduling algorithm that uses low number to represent high priority. Your program should first prompts the user to input a list of process ID, arrival time, burst time, and priority for each process to be run on the CPU. The list is terminated by 0 0 0 0 for the process ID, arrival time, burst time, and priority. The program output should draw a Gantt chart (as text) that shows the scheduling order of the processes using the Priority scheduling algorithm. Also print the turnaround time, response time, and waiting time for each process along with their average for all processes. Make sure to display very helpful messages to the user for input and output.
Check the following schedules, whether they are conflict serializable? S1: R1(X); W1(X); R2(X); R1(Y); W1(Y); R2(Y) S2: R1(X); W1(X); R2(X); R2(Y); R1(Y); W1(Y)
PROGRAMMING EXERCISES: 4. How many double entries can aValues[MAX_A] store? 5. What is the value of aValues[2]? [Hint: the value is an address] 6. How many bytes are allocated to sentence?
zy Section 1.3 - IT 140: Introduct zy Section 1.3 - IT 140: Introduct X O (158) SNHU IT140 Module Or x b Answered: Run the program G Many useful programs allow + Ô https://learn.zybooks.com/zybook/SNHUIT140V3/chapter/1/section/3?content_resource_id=40688398 = zyBooks My library > IT 140: Introduction to Scripting v3 home > 1.3: Input/Output E zyBooks catalog ? Help/FAQ 8 Jose Roque CHALLENGE 1.3.4: Read user input numbers and perform a calculation. АCTIVITY Read two numbers from user input. Then, print the sum of those numbers. Hint -- Copy/paste the following code, then just type code where the questions marks are to finish the code. num1 = int(input ()) num2 = ? print(num1 + ?) Note: Our system automatically runs your program several times, trying different input values each time to ensure your program works for any values. Notes on how to solve this. See How to Use zyBooks for info on how our automated program grader works. 247772.2002516.qx3zqy7 1 2 ' Your solution goes here '' 1…
In assembly 68k write the: Initialize the supervisor stack pointer to $8000 Initialize the program counter to $1000 Reserve locations at $2000 to hold your first name only (Joshua) as text and call it NAM Reserve locations at $3000 to store 9 longwords, call it MEM, and write your family name (Kimmich) as a comment Reserve locations at $12400 to store 32-bit unsigned integer variable called RES (to be computed)
#include <iostream>#include <pthread.h>#include <stdlib.h> #define TOTAL_THREADS 4 int count;pthread_mutex_t the_mutex; // phread mutex variable - initialize here if using the initializer macro void* myFunction(void* arg){int actual_arg = *((int*) arg);for(unsigned int i = 0; i < 10; ++i) {// TODO:// Use a Pthread mutex to control// access to the critical region. // Beginning of the critical regioncount++;std::cout << "Thread #" << actual_arg << " count = " << count << std::endl; // End of the critical region// TODO:// Relinquish access to the Pthread mutex// since critical region is complete. // Random wait - This code is just to ensure that the threads// show data sharing problemsint max = rand() % 100000;for (int x = 0; x < max; x++);// End of random wait code}pthread_exit(NULL);} int main(){int rc[TOTAL_THREADS];pthread_t ids[TOTAL_THREADS];int args[TOTAL_THREADS];// TODO: Initialize the pthread mutex here if using the…
3. I/O Management: Disk Arm Scheduling & RAIDa. It is known that a disk drive has 256 cylinders, with cylinder numbers starting from 0 and ending at 255. The position of the needle on the disk drive currently stops at 128. It is also known that the needle always “goes to the cylinder with the smaller number first”. The order of the positions visited sequentially is: 254, 64, 32, 100, 50, 70. From the 3 choices of algorithms below, which one is the best algorithm? Make each image and determine the seektime.i. SCANii. C-SCANiii. FIFO
Cooperating Processes: Select all of the following statements that are true. Ordinary (unnamed) pipes provide a solution for bidirectional communication between related processes. Mechanisms for inter-process communication enable different processes to exchange information and synchronize their actions. The bounded buffer solution to the producer-consumer problem, which was the first one discussed in class and does not use semaphores or monitors, allows at most BUFFERSIZE items in the buffer at the same time.
Which of the following statements about static and dynamic library is/are INCORRECT? (a) libTeslaFactory.a used in Assignment 2 is a static library. (b) Static libraries use more memory as they copy code into executable files. (c) One advantage of static libraries is that they are directly executable. (d) Calling shared libraries functions won't generate page faults as they are usually resident in memory. (e) None of the above (i.e., (1)-(4) are all CORRECT)