The following code spawns n-1 concurrent processes by the forall construct. Each process ww www i repeatedly updates the elements A[i] and B[i] of two shared arrays. int A[n], B[n];ª A[0] = init( );e forall (i = 1 to n-1) {+ while (not done) { /* each process */- A[i] func1 (A[i], A[i-1]);- %3D B[i] func2 (A[i]);- Since computing A[i] uses A[i-1], each process i must wait for its predecessor process i-1 to complete the computation of A[i-1]. Insert the necessary semaphore operations into the code to guarantee that processes wait for each other to guarantee the correctness of the program, but allow for as much overlap between the computations as possible. You should also show the initial values of all semaphores used.

The following code spawns n-1 concurrent processes by the forall construct. Each process ww www i repeatedly updates the elements A[i] and B[i] of two shared arrays. int A[n], B[n];ª A[0] = init( );e forall (i = 1 to n-1) {+ while (not done) { /* each process */- A[i] func1 (A[i], A[i-1]);- %3D B[i] func2 (A[i]);- Since computing A[i] uses A[i-1], each process i must wait for its predecessor process i-1 to complete the computation of A[i-1]. Insert the necessary semaphore operations into the code to guarantee that processes wait for each other to guarantee the correctness of the program, but allow for as much overlap between the computations as possible. You should also show the initial values of all semaphores used.

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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