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feat: Add thread names to rayon thread pool #15024

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Mar 13, 2024
Merged

feat: Add thread names to rayon thread pool #15024

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2 changes: 2 additions & 0 deletions crates/polars-core/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,7 @@ pub static PROCESS_ID: Lazy<u128> = Lazy::new(|| {
// this is re-exported in utils for polars child crates
#[cfg(not(target_family = "wasm"))] // only use this on non wasm targets
pub static POOL: Lazy<ThreadPool> = Lazy::new(|| {
let thread_name = std::env::var("POLARS_THREAD_NAME").unwrap_or_else(|_| "polars".to_string());
ThreadPoolBuilder::new()
.num_threads(
std::env::var("POLARS_MAX_THREADS")
Expand All @@ -57,6 +58,7 @@ pub static POOL: Lazy<ThreadPool> = Lazy::new(|| {
.get()
}),
)
.thread_name(move |i| format!("{}-{}", thread_name, i))
.build()
.expect("could not spawn threads")
});
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