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9- T1 and T2 are two POSIX threads and m is a mutex variable in the following C code segment. What is th variable data after execution of this code? int data = 12; T10 { for(int i=0; i<5; i++) T2() { for(int i=0; i<3; i++) { pthread_mutex_lock(&m); { pthread_mutex_lock(&m); data = data + 1; data = data - 1; pthread_mutex_unlock(&m);} pthread_mutex_unlock(&m);} } } a) 12 b) 17 c) Undetermined d) 14 Leave blank

9- T1 and T2 are two POSIX threads and m is a mutex variable in the following C code segment. What is th variable data after execution of this code? int data = 12; T10 { for(int i=0; i<5; i++) T2() { for(int i=0; i<3; i++) { pthread_mutex_lock(&m); { pthread_mutex_lock(&m); data = data + 1; data = data - 1; pthread_mutex_unlock(&m);} pthread_mutex_unlock(&m);} } } a) 12 b) 17 c) Undetermined d) 14 Leave blank

Computer Networking: A Top-Down Approach (7th Edition)
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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9 - T1 and T2 are two POSIX threads and m is a mutex variable in the following C code segment. What is the value of the variable data after execution of this code? int data = 12; T1() { T2() { for(int i=0; i<5; i++) for(int i=0; i<3; i++) { pthread_mutex_lock(&m); { pthread_mutex_lock(&m); data = data + 1; data = data - 1; pthread_mutex_unlock(&m);} pthread_mutex_unlock(&m);} } a) O 12 b) O 17 c) O Undetermined d) O 14 Leave blank
Transcribed Image Text:9 - T1 and T2 are two POSIX threads and m is a mutex variable in the following C code segment. What is the value of the variable data after execution of this code? int data = 12; T1() { T2() { for(int i=0; i<5; i++) for(int i=0; i<3; i++) { pthread_mutex_lock(&m); { pthread_mutex_lock(&m); data = data + 1; data = data - 1; pthread_mutex_unlock(&m);} pthread_mutex_unlock(&m);} } a) O 12 b) O 17 c) O Undetermined d) O 14 Leave blank
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