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Marco Realacci 2025-03-12 12:04:27 +01:00
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13
Concurrent Systems/notes/4 - Semaphores.md
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@ -159,8 +159,19 @@ Let's imagine to have quick producers and a slow consumer:
producer A: producer A:
- writes at BUF[0], so IN becomes 1 - writes at BUF[0], so IN becomes 1
producer B:
- writes at BUF[1], so IN becomes 2
consumer A: consumer A:
- reads - starts reading BUF[0], now OUT is 1
consumer B:
- finds OUT at 1
- sets out at 2 and starts reading
- finishes reading
-
#### The Readers/Writers problem #### The Readers/Writers problem
- Several processes want to access a file - Several processes want to access a file