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task: allocate callback on heap immediately in debug mode (#4203)

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sander2
2021-10-29 17:34:25 +02:00
committed by GitHub
parent 75c07770bf
commit 44a1aad8df
1 changed files with 5 additions and 1 deletions
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tokio/src/runtime/handle.rs
+5 -1
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@@ -193,7 +193,11 @@ impl Handle {
F: FnOnce() -> R + Send + 'static,
R: Send + 'static,
{
self.spawn_blocking_inner(func, None)
if cfg!(debug_assertions) && std::mem::size_of::<F>() > 2048 {
self.spawn_blocking_inner(Box::new(func), None)
} else {
self.spawn_blocking_inner(func, None)
}
}
#[cfg_attr(tokio_track_caller, track_caller)]