#Monitors problem

1 messages · Page 1 of 1 (latest)

azure wren
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Hello, i recently got some homeworks to do about fixing a producer/consumer class, and I am doing all my classnotes tell me to but it's not working (or at leash has it should). The problem consist in 2 actors, one produce food othe consume, you can't consume food if arraylist is empty and you can't produce if arraylist have more than 3 dishes. Any thoughts why the method server start before produece?

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flat prismBOT
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<@&987246399047479336> please have a look, thanks.

lucid crow
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I'll look at this later, but fair warning

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multi-threading is hard

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locks are the harder part of that

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and wait/notify are very hard

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so I might not be able to tell whats wrong at a glance

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if you can share this in a way i can run it on my machine (or someone else who wants to take the question) that would be helpful

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if this wasn't a school assignment i would be telling you to not use synchronized or wait/notify

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i would be showing you things in java.util.concurrent that already did most of the hard work

azure wren
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oh sure i can send u the code in .tar or here as u wish

lucid crow
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github would be better, but thats fine for me

azure wren
lucid crow
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ping me later in the day

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i have work to do now for my normal job

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or if anyone else is reading, feel free to pick it up

azure wren
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alright I have lot of time to complete the task so np

lucid crow
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what is your actual assignment?

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is it "use synchronized and wait/notifyAll to make a producer/consumer"

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or would we be able to use built-in queues

azure wren
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The main problem here is that i need to fix anykind of race problems

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by using monitors

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It is a restaurant app, not sure if you need more info if you do i can transalate the problem

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Race conditions sorry

flat prismBOT
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@azure wren

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azure wren
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@lucid crow hey man I ve been asking in other servers and testing some stuff and I feel like i was the solution and I was obsesing to fix something that is not broken, this is the log i ve got without syncronized in the method

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