1 files changed, 20 insertions, 0 deletions
diff --git a/third_party/rust/cc/src/parallel/mod.rs b/third_party/rust/cc/src/parallel/mod.rs
new file mode 100644
index 0000000000..d69146dc59
--- /dev/null
+++ b/third_party/rust/cc/src/parallel/mod.rs
@@ -0,0 +1,20 @@
+pub(crate) mod async_executor;
+pub(crate) mod job_token;
+pub(crate) mod stderr;
+
+/// Remove all element in `vec` which `f(element)` returns `false`.
+///
+/// TODO: Remove this once the MSRV is bumped to v1.61
+pub(crate) fn retain_unordered_mut<T, F>(vec: &mut Vec<T>, mut f: F)
+where
+    F: FnMut(&mut T) -> bool,
+{
+    let mut i = 0;
+    while i < vec.len() {
+        if f(&mut vec[i]) {
+            i += 1;
+        } else {
+            vec.swap_remove(i);
+        }
+    }
+}