Which of the following statements best describes this code that is attempting to print the value of a disk block. Note that syntax of queue has changed slightly from the assignment to simplify it. void interrupt_service_routine(){ int* result; void (*callback) (int*); queue_dequeue(&result, &callback); callback(result); void printInt(int* i){ printf("%d\n", *i); free(i); void read(int blockno){ malloc(sizeof(int)); queue_enqueue (result, printInt); disk_read(result, blockno); int* result It has an error : it might print before the read has completed. X It makes incorrect use of function pointers. O It has a dangling pointer bug. O It has an error: it never calls interrupt_service_routine. It has a memory leak bug. O It is correct.
Which of the following statements best describes this code that is attempting to print the value of a disk block. Note that syntax of queue has changed slightly from the assignment to simplify it. void interrupt_service_routine(){ int* result; void (*callback) (int*); queue_dequeue(&result, &callback); callback(result); void printInt(int* i){ printf("%d\n", *i); free(i); void read(int blockno){ malloc(sizeof(int)); queue_enqueue (result, printInt); disk_read(result, blockno); int* result It has an error : it might print before the read has completed. X It makes incorrect use of function pointers. O It has a dangling pointer bug. O It has an error: it never calls interrupt_service_routine. It has a memory leak bug. O It is correct.
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Transcribed Image Text:Which of the following statements best describes this code that is attempting to print the value of a disk
block. Note that syntax of queue has changed slightly from the assignment to simplify it.
void interrupt_service_routine(){
int* result;
void (*callback) (int*);
queue_dequeue(&result, &callback);
callback(result);
void printInt(int* i){
printf("%d\n", *i);
free(i);
void read (int blockno){
malloc(sizeof(int));
queue_enqueue(result, printInt);
disk_read(result, blockno);
int* result
It has an error : it might print before the read has completed. X
O It makes incorrect use of function pointers.
O It has a dangling pointer bug.
OIt has an error: it never calls interrupt_service_routine.
It has a memory leak bug.
OIt is correct.
X 0%
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