Add script I used to look for memory leaks. (PetterS#3)

Author: PetterS

check_memory.py

@@ -0,0 +1,43 @@
+# Script that tries to prove that the quickjs wrapper does not leak memory.
+#
+# It finds the leak if a Py_DECREF is commented out in module.c.
+
+import gc
+import tracemalloc
+import unittest
+
+import quickjs
+import test_quickjs
+
+def run():
+ loader = unittest.TestLoader()
+ suite = loader.discover(".")
+ runner = unittest.TextTestRunner()
+ runner.run(suite)
+
+def main():
+ print("Warming up (to discount regex cache etc.)")
+ run()
+
+ tracemalloc.start(25)
+ gc.collect()
+ snapshot1 = tracemalloc.take_snapshot()
+ run()
+ gc.collect()
+ snapshot2 = tracemalloc.take_snapshot()
+
+ top_stats = snapshot2.compare_to(snapshot1, 'traceback')
+
+ print("Objects not released")
+ print("====================")
+ for stat in top_stats:
+ if "tracemalloc.py" in str(stat) or stat.size_diff == 0:
+ continue
+ print(stat)
+ for line in stat.traceback.format():
+ print(" ", line)
+
+ print("\nquickjs should not show up above.")
+
+if __name__ == "__main__":
+ main()