chore: import upstream snapshot with attribution

python/ray/includes/setproctitle.pxi

@@ -0,0 +1,33 @@
+import sys
+import psutil
+import subprocess
+import threading
+
+from libcpp.string cimport string as c_string
+from ray.includes.setproctitle cimport (
+    spt_setup,
+    set_ps_display
+)
+
+_current_proctitle = None
+_current_proctitle_lock = threading.Lock()
+
+def setproctitle(title: str):
+    global _current_proctitle
+    cdef c_string c_title = title.encode("utf-8")
+
+    with _current_proctitle_lock:
+        spt_setup()
+        set_ps_display(c_title.c_str(), True)
+
+        _current_proctitle = title
+
+def getproctitle() -> str:
+    global _current_proctitle
+
+    with _current_proctitle_lock:
+        if _current_proctitle is None:
+            # The process title is not change so getting the process cmdline as the
+            # initial title.
+            _current_proctitle = subprocess.list2cmdline(psutil.Process().cmdline())
+        return _current_proctitle