Media Summary: Okay so this is the important bit is so this is how you typically use Idea oh sorry was that a question no okay so that code between the Right which should be okay because now if thread two executes Oops why so now if thread

Locks Ece 344 Section 2 - Detailed Analysis & Overview

Okay so this is the important bit is so this is how you typically use Idea oh sorry was that a question no okay so that code between the Right which should be okay because now if thread two executes Oops why so now if thread ... user space depending on where it's implemented so P threads live in the kernel your lab So now this was kind of an example of our data race right but now if we have

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#18 - Transactions with Two-Phase Locking ✸ Firebolt Database Talk (CMU Intro to Database Systems)
Locking (2023 Fall ECE 344 Section 3)
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Locks (ECE 344 - Section 2)

Locks (ECE 344 - Section 2)

Okay so this is the important bit is so this is how you typically use

Locking (ECE 344 - Section 2)

Locking (ECE 344 - Section 2)

... locked what

Locks Implementation (ECE 344 - Section 2)

Locks Implementation (ECE 344 - Section 2)

So thread one doesn't have the

Locks (2023 Fall ECE 344 Section 2)

Locks (2023 Fall ECE 344 Section 2)

Idea oh sorry was that a question no okay so that code between the

Locking (2023 Fall ECE 344 Section 2)

Locking (2023 Fall ECE 344 Section 2)

Thread

Locks Implementation (2023 Fall ECE 344 Section 2)

Locks Implementation (2023 Fall ECE 344 Section 2)

Right which should be okay because now if thread two executes Oops why so now if thread

Threads Implementation (ECE 344 - Section 2)

Threads Implementation (ECE 344 - Section 2)

... user space depending on where it's implemented so P threads live in the kernel your lab

#18 - Transactions with Two-Phase Locking ✸ Firebolt Database Talk (CMU Intro to Database Systems)

#18 - Transactions with Two-Phase Locking ✸ Firebolt Database Talk (CMU Intro to Database Systems)

Andy Pavlo (https://www.cs.cmu.edu/~pavlo/) Slides: https://15445.courses.cs.cmu.edu/fall2025/slides/18-twophaselocking.pdf ...

Locking (2023 Fall ECE 344 Section 3)

Locking (2023 Fall ECE 344 Section 3)

So now thread

Locks Implementation (2023 Fall ECE 344 Section 3)

Locks Implementation (2023 Fall ECE 344 Section 3)

Once yeah so spin

Locks (ECE 344 - Section 3)

Locks (ECE 344 - Section 3)

So now this was kind of an example of our data race right but now if we have

Locking (2023 Fall ECE 344 Section 1)

Locking (2023 Fall ECE 344 Section 1)

Lock

Locking (ECE 344 - Section 3)

Locking (ECE 344 - Section 3)

... I will only get