Struct rustc_data_structures::sync::parallel::ParallelGuard

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pub struct ParallelGuard {
    panic: Mutex<Option<IntoDynSyncSend<Box<dyn Any + Send + 'static>>>>,
}
Expand description

A guard used to hold panics that occur during a parallel section to later by unwound. This is used for the parallel compiler to prevent fatal errors from non-deterministically hiding errors by ensuring that everything in the section has completed executing before continuing with unwinding. It’s also used for the non-parallel code to ensure error message output match the parallel compiler for testing purposes.

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§panic: Mutex<Option<IntoDynSyncSend<Box<dyn Any + Send + 'static>>>>

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impl ParallelGuard

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pub fn run<R>(&self, f: impl FnOnce() -> R) -> Option<R>

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Size: 24 bytes