HackerNews Summary (2023-06-04 10PM)

Source: Tell HN: My Reddit account was banned after adding my subs to the protest

Summary
Reddit user gets locked out of their account and all posts and comments are deleted after adding their small subreddits to the list of those going private during the upcoming API fee increase protest.

Fact

🚨 Reddit locked user out of account and deleted all their posts and comments after adding their subreddits to the protest list

Source: Moderation strike: Stack Overflow, Inc. cannot consistently ignore, mistreat, and malign its volunteers

Summary
Moderators, curators, contributors and users across Stack Overflow and Stack Exchange network have initiated a general moderation strike following recent and upcoming changes to policy and platform made by Stack Exchange, Inc. Concerns pertain to newly introduced policies on AI-generated content, its inaccuracy and violation of referencing requirements of Stack Overflow.

Fact

🚫 “Temporary policy” banning ChatGPT on Stack Overflow due to general inaccuracy and violation of referencing requirements was implemented by moderators.

💻 Stack Exchange, Inc. staff enforced the policy and added a site banner and Help Center articles regarding the ban on ChatGPT posts.

🆘 Posting AI- and specifically GPT-generated content limited by moderators, then the requisite for its immediate cessation, was posted resulting in a lack of moderator support.

🤖 New policy on AI-generated content differs significantly from the original version, causing harm and lack of adequate moderation.

Source: A Close Look at a Spinlock – Embedded in Academia

Summary
A spinlock is a mutual exclusion primitive provided by a multiprocessor operating system, used to protect against preemption on the current CPU and attempts by other cores to access the critical section. It can be implemented using atomic memory operations like test-and-set, compare-and-swap, and load-linked/store-conditional.

Fact

💻 Spinlocks need to protect against preemption on the current CPU and concurrent access by other cores to the critical section.

🔒 The lock field holds a zero when the lock is free and a one when it is held, and a compare-and-swap operation is used to acquire the lock.

🔄 A ticket lock can be used to make access to the critical section more fair by enforcing FIFO access based on increasing ticket numbers.

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