Test case for issue #236 (potential memory leak)

tests/regress/potential_memory_leak.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+
+import platform
+import resource
+
+from unicorn import *
+
+import regress
+
+class MemoryLeak(regress.RegressTest):
+    def test(self):
+        if platform.system() == "Darwin":
+            rusage_multiplier = 1
+        elif platform.system() == "Linux":
+            rusage_multiplier = 1024
+        else:
+            # resource.getrusage(...) is platform dependent. Only tested under Mac and Linux. 
+            return
+        max_rss_before = resource.getrusage(resource.RUSAGE_SELF).ru_maxrss * rusage_multiplier
+        for i in xrange(10000):
+            mu = Uc(UC_ARCH_X86, UC_MODE_64)
+            mu.mem_map(0, 4096)
+            mu.emu_start(0, 0)
+        max_rss_after = resource.getrusage(resource.RUSAGE_SELF).ru_maxrss * rusage_multiplier
+        rss_increase_per_iteration = (max_rss_after - max_rss_before) / i
+        self.assertLess(rss_increase_per_iteration, 8000)
+
+if __name__ == '__main__':
+    regress.main()