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Dining philosophers.py
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Dining philosophers.py
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import salabim as sim
class Philosopher(sim.Component):
def process(self):
while True:
thinkingtime = sim.Uniform(0.5, 1.5).sample() * thinkingtime_mean
eatingtime = sim.Uniform(0.5, 1.5).sample() * eatingtime_mean
yield self.hold(thinkingtime, mode='thinking')
yield self.request(self.leftfork, self.rightfork, mode='waiting')
yield self.hold(eatingtime, mode='eating')
self.release()
env = sim.Environment(trace=True)
eatingtime_mean = 20
thinkingtime_mean = 20
nphilosophers = 8
philosopher = []
fork = []
for i in range(nphilosophers):
philosopher.append(Philosopher())
fork.append(sim.Resource('fork.'))
if i != 0:
philosopher[i].leftfork = fork[i - 1]
philosopher[i].rightfork = fork[i]
philosopher[0].leftfork = fork[nphilosophers - 1]
env.run(500)