13 lines
427 B
Rust
13 lines
427 B
Rust
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use std::sync::atomic::{AtomicUsize, Ordering};
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static STRUCT_COUNTER: AtomicUsize = AtomicUsize::new(0);
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pub type StructId = usize;
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/// For performance reasons, some structs need a unique id to be
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/// compared efficiently with one another.
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/// In order to generate it, we use an atomic static variable
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/// that is incremented for each struct.
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pub fn next_id() -> StructId {
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STRUCT_COUNTER.fetch_add(1, Ordering::SeqCst)
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}
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