Add test to director guard using multiple threads.

Signed-off-by: Erez Geva <ErezGeva2@gmail.com>

Issue #2949

Examples/test-suite/director_guard.i

@@ -0,0 +1,22 @@
+%module(directors="1", threads) director_guard;
+
+%feature("director") Callback;
+
+%inline %{
+
+class Callback {
+public:
+  virtual const char *run() const { return "tst1"; }
+  virtual ~Callback() {}
+
+};
+
+class Caller {
+private:
+  Callback *_callback;
+public:
+  Caller(Callback *cb): _callback(cb) { }
+  const char *call() { return _callback->run(); }
+};
+
+%}

Examples/test-suite/python/Makefile.in

@@ -36,6 +36,7 @@ endif
 CPP_TEST_CASES += \
 	callback \
 	complextest \
+	director_guard \
 	director_stl \
 	director_wstring \
 	file_test \

Examples/test-suite/python/director_guard_runme.py

@@ -0,0 +1,32 @@
+import director_guard
+import threading
+import time
+
+str2 = "tst2"
+
+class MinCallback(director_guard.Callback):
+    def run(self):
+        return str2
+
+class CallThread(threading.Thread):
+    def __init__(self, caller):
+        super(CallThread, self).__init__()
+        self.caller = caller
+
+    def run(self):
+        for x in range(100):
+            if self.caller.call() != "tst2":
+                raise RuntimeError("Should return true")
+            time.sleep(0.001) # 1 millisecond
+
+callback = MinCallback()
+caller = director_guard.Caller(callback)
+threads = [ ]
+for x in range(10):
+    threads.append(CallThread(caller))
+
+for t in threads:
+    t.start()
+
+for t in threads:
+    t.join()