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# Objective - Fixes #18617 ## Solution - Added `thread::sleep` to `bevy_platform_support` using a spin-based fallback. - Fixed bug in `bevy_platform_support::time::Instant::elapsed` (comparison was backwards) - Switched `ScheduleRunnerPlugin` to use `bevy_platform_support:🧵:sleep` on `std` and `no_std` platforms (WASM + Browser excluded) ## Testing - Ran reproduction code from @mockersf in linked issue and confirmed a consistent 60 counts per `println!`. --- ## Notes - I chose to add `bevy_platform_support:🧵:sleep` instead of putting the fix in-line within `ScheduleRunnerPlugin` to keep the separation of concerns clean. `sleep` is only used in one other location in Bevy, `bevy_asset`, but I have decided to leave that as-is since `bevy_asset` isn't `no_std` compatible anyway. - The bug in `bevy_platform_support::time::Instant::elapsed` wasn't the cause of this issue, but it did prevent this fix from working so I have included the it in this PR. |
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