32 lines
939 B
Rust
32 lines
939 B
Rust
//! Package up unwind recovery. Note that if you are in some sensitive
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//! place, you can use the `AbortIfPanic` helper to protect against
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//! accidental panics in the rayon code itself.
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use std::any::Any;
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use std::panic::{self, AssertUnwindSafe};
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use std::thread;
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/// Executes `f` and captures any panic, translating that panic into a
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/// `Err` result. The assumption is that any panic will be propagated
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/// later with `resume_unwinding`, and hence `f` can be treated as
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/// exception safe.
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pub(super) fn halt_unwinding<F, R>(func: F) -> thread::Result<R>
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where
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F: FnOnce() -> R,
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{
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panic::catch_unwind(AssertUnwindSafe(func))
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}
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pub(super) fn resume_unwinding(payload: Box<dyn Any + Send>) -> ! {
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panic::resume_unwind(payload)
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}
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pub(super) struct AbortIfPanic;
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impl Drop for AbortIfPanic {
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fn drop(&mut self) {
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eprintln!("Rayon: detected unexpected panic; aborting");
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::std::process::abort();
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}
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}
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