On Fri, 7 Feb 2025 07:58:47 GMT, Michael Strauß <mstra...@openjdk.org> wrote:

> What's the rationale for using a borrow pattern here, instead of simply 
> synchronizing access to the object in question?

A very good question!

This pattern seemed to be the most applicable here: the solution needs to be 
both thread-safe and reentrant, with the expectation that in most cases the 
simple scenario happens where the static instance is used.

We actually use that pattern using synchronization, see 
`GlyphLayout::getInstance()` for example.  I think the use of AtomicBoolean is 
far better, so I took the same approach in #1667 .

Is there a specific scenario that would not work or cause issues?

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PR Comment: https://git.openjdk.org/jfx/pull/1691#issuecomment-2643323226

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