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Document why ForegroundExecutor is !Send (#25492)

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Michael Sloan 2025-02-24 12:48:59 -07:00 • committed by GitHub
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crates/gpui/src/executor.rs
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@ -35,6 +35,11 @@ pub struct BackgroundExecutor {
/// A pointer to the executor that is currently running, /// A pointer to the executor that is currently running,
/// for spawning tasks on the main thread. /// for spawning tasks on the main thread.
///
/// This is intentionally `!Send` via the `not_send` marker field. This is because
/// `ForegroundExecutor::spawn` does not require `Send` but checks at runtime that the future is
/// only polled from the same thread it was spawned from. These checks would fail when spawning
/// foreground tasks from from background threads.
#[derive(Clone)] #[derive(Clone)]
pub struct ForegroundExecutor { pub struct ForegroundExecutor {
#[doc(hidden)] #[doc(hidden)]