Consider the code example for allocating and releasing processes shown. Identify the race condition(s).Assume you have a mutex lock named mutex with the operations acquire() and release(). Indicate where the locking needs to be placed to prevent the race condition(s).Could we replace the integer variable:int number_of_processes = 0 with the atomic integer: atomic_t number_of_processes = 0 to prevent the race condition(s)? Explain. #define MAX_PROCESSES 255int number_of_processes0;%3D/* the implementation of fork() calls this function */int allocate_process() {int new_pid;if (number_of_processesMAX_PROCESSES)==return -1;else {/* allocate necessary process resources */++number_of_processes;return new_pid;}}/* the implementation of exit() calls this function */void release_process() {/* release process resources--number_of_processes;

Answered: to be placed to prevent the race…

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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Question

Consider the code example for allocating and releasing processes shown.

Identify the race condition(s).
Assume you have a mutex lock named mutex with the operations acquire() and release(). Indicate where the locking needs to be placed to prevent the race condition(s).

Could we replace the integer variable:

int number_of_processes = 0

with the atomic integer:

atomic_t number_of_processes = 0

to prevent the race condition(s)? Explain.

#define MAX_PROCESSES 255
int number_of_processes
0;
%3D
/* the implementation of fork() calls this function */
int allocate_process() {
int new_pid;
if (number_of_processes
MAX_PROCESSES)
==
return -1;
else {
/* allocate necessary process resources */
++number_of_processes;
return new_pid;
}
}
/* the implementation of exit() calls this function */
void release_process() {
/* release process resources
--number_of_processes;

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