34 lines
930 B
Rust
34 lines
930 B
Rust
// SPDX-License-Identifier: MPL-2.0
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use alloc::fmt;
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/// Always [`Sync`], but unsafe to reference the data.
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pub(super) struct ForceSync<T>(T);
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impl<T> fmt::Debug for ForceSync<T> {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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f.debug_struct("ForceSync").finish_non_exhaustive()
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}
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}
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// SAFETY: The caller of the `ForceSync::get` method must ensure that the underlying data is not
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// concurrently accessed if the underlying type is not `Sync`.
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unsafe impl<T> Sync for ForceSync<T> {}
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impl<T> ForceSync<T> {
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/// Creates an instance with `data` as the inner data.
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pub(super) fn new(data: T) -> Self {
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Self(data)
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}
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/// Returns a reference to the inner data.
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///
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/// # Safety
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///
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/// If the data type is not [`Sync`], the caller must ensure that the data is not accessed
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/// concurrently.
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pub(super) unsafe fn get(&self) -> &T {
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&self.0
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}
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}
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