thread-safe-counter

OS Environment

• Ubuntu 18.04

time

-Mutex (./a) : about 0.15s -Semaphore (./b) : about 5s

my analysis

Semaphore has too many statement of

• declaring struct sembuf s
• initializing and calculating elements of struct sembuf s

this is because Semaphore handle shared memory

instead, Mutex handle only the key of the door

my information

• name : 이승욱
• student id : 20173417
• subject : Computer Architecture and Real-Time Operating System (1241501-01)