philosopher

philosopher.py

import thread
import time, random
import threading

fork = list()
for i in range(5):
   fork.append(threading.Semaphore(1))

def philosopher(f):
   f = int(f)
   while True:
      # left fork
      fork[f].acquire()
      # right fork - circular approach
      fork[(f + 1) % 5].acquire()
      print("Philosopher %i eating..." %f)
      time.sleep(random.randint(1, 5))
      fork[f].release()
      fork[(f + 1) % 5].release()
      print("Philosopher %i thinking..." %f)
      time.sleep(random.randint(1, 10))

for i in range(5):
   # Starting Threads with philosophers
   thread.start_new_thread(filosofo, tuple([i]))

while 1: pass