James Liu d33f5c759c Add optional single-threaded feature to bevy_ecs/bevy_tasks (#6690) ... # Objective Fixes #6689. ## Solution Add `single-threaded` as an optional non-default feature to `bevy_ecs` and `bevy_tasks` that: - disable the `ParallelExecutor` as a default runner - disables the multi-threaded `TaskPool` - internally replace `QueryParIter::for_each` calls with `Query::for_each`. Removed the `Mutex` and `Arc` usage in the single-threaded task pool.  ## Future Work/TODO Create type aliases for `Mutex`, `Arc` that change to single-threaaded equivalents where possible. --- ## Changelog Added: Optional default feature `multi-theaded` to that enables multithreaded parallelism in the engine. Disabling it disables all multithreading in exchange for higher single threaded performance. Does nothing on WASM targets. --------- Co-authored-by: Carter Anderson <mcanders1@gmail.com>		2023-07-09 04:22:15 +00:00
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src	Add optional single-threaded feature to bevy_ecs/bevy_tasks (#6690)	2023-07-09 04:22:15 +00:00
Cargo.toml	Add optional single-threaded feature to bevy_ecs/bevy_tasks (#6690)	2023-07-09 04:22:15 +00:00