1 files changed, 18 insertions, 0 deletions
diff --git a/components/util/tid.rs b/components/util/tid.rs
new file mode 100644
index 00000000000..fdd9a775bcd
--- /dev/null
+++ b/components/util/tid.rs
@@ -0,0 +1,18 @@
+use std::sync::atomics::{AtomicUint, INIT_ATOMIC_UINT, SeqCst};
+
+static mut next_tid: AtomicUint = INIT_ATOMIC_UINT;
+
+local_data_key!(task_local_tid: uint)
+
+/// Every task gets one, that's unique.
+pub fn tid() -> uint {
+    let ret =
+        match task_local_tid.replace(None) {
+            None => unsafe { next_tid.fetch_add(1, SeqCst) },
+            Some(x) => x,
+        };
+
+    task_local_tid.replace(Some(ret));
+
+    ret
+}