Fix file_watcher feature hanging indefinitely #10585
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nicopap
added
C-Bug
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Rather than enabling the
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I'll update the PR with this in mind |
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I don't have |
mockersf
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Nov 17, 2023
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@SludgePhD I now removed the reference to #10576 thank for pointing that out! |
alice-i-cecile
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Nov 19, 2023
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rdrpenguin04
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Jan 9, 2024
# Objective Fix the `bevy_asset/file_watcher` feature in practice depending on multithreading, while not informing the user of it. **As I understand it** (I didn't check it), the file watcher feature depends on spawning a concurrent thread to receive file update events from the `notify-debouncer-full` crate. But if multithreading is disabled, that thread will never have time to read the events and consume them. - Fixes bevyengine#10573 ## Solution Add a `compile_error!` causing compilation failure if `file_watcher` is enabled while `multi-threaded` is disabled. This is considered better than adding a dependency on `multi-threaded` on the `file_watcher`, as (according to @mockersf) toggling on/off `multi-threaded` has a non-zero chance of changing behavior. And we shouldn't implicitly change behavior. A compilation failure prevents compilation of code that is invalid, while informing the user of the steps needed to fix it.
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Objective
Fix the
bevy_asset/file_watcherfeature in practice depending on multithreading, while not informing the user of it.As I understand it (I didn't check it), the file watcher feature depends on spawning a concurrent thread to receive file update events from the
notify-debouncer-fullcrate. But if multithreading is disabled, that thread will never have time to read the events and consume them.Solution
Add a
compile_error!causing compilation failure iffile_watcheris enabled whilemulti-threadedis disabled.This is considered better than adding a dependency on
multi-threadedon thefile_watcher, as (according to @mockersf) toggling on/offmulti-threadedhas a non-zero chance of changing behavior. And we shouldn't implicitly change behavior. A compilation failure prevents compilation of code that is invalid, while informing the user of the steps needed to fix it.