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Support setting the mmtk thread count with MMTK_THREADS #5

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Merged
merged 1 commit into from
Dec 5, 2024
Merged

Support setting the mmtk thread count with MMTK_THREADS #5

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9 changes: 9 additions & 0 deletions gc/mmtk/src/api.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,11 @@ pub extern "C" fn mmtk_builder_default() -> *mut MMTKBuilder {

const DEFAULT_HEAP_MIN: usize = 1 << 20;

let mmtk_threads: usize = std::env::var("MMTK_THREADS")
.unwrap_or("0".to_string())
.parse::<usize>()
.unwrap_or(0);

let mut mmtk_heap_min = match std::env::var("MMTK_HEAP_MIN") {
Ok(min) => {
let capa = parse_capacity(&min, DEFAULT_HEAP_MIN);
Expand Down Expand Up @@ -90,6 +95,10 @@ pub extern "C" fn mmtk_builder_default() -> *mut MMTKBuilder {
// Between 1MiB and 500MiB
builder.options.gc_trigger.set(mmtk_mode);

if mmtk_threads > 0 {
builder.options.threads.set(mmtk_threads);
}

Box::into_raw(Box::new(builder))
}

Expand Down