windows check_pid

oml/utils.py

@@ -369,12 +369,23 @@ def update_static():
     )
 
 def check_pid(pid):
-    try:
+    if sys.platform == 'win32':
-        os.kill(pid, 0)
+        import ctypes
-    except:
+        kernel32 = ctypes.windll.kernel32
-        return False
+        SYNCHRONIZE = 0x100000
+        process = kernel32.OpenProcess(SYNCHRONIZE, 0, pid)
+        if process != 0:
+            kernel32.CloseHandle(process)
+            return True
+        else:
+            return False
     else:
-        return True
+        try:
+            os.kill(pid, 0)
+        except:
+            return False
+        else:
+            return True
 
 def check_pidfile(pid):
     try: