Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<Python xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.w3.org/2001/XMLSchema" xsi:schemaLocation="py_ext_xsd.xsd">
<![CDATA[import time,sys,ctypes
Python_to_C_Call = PLCBinary.Python_to_C_Call
Python_to_C_Call.restype = ctypes.c_int
Python_to_C_Call.argtypes = [ctypes.c_int, ctypes.POINTER(ctypes.c_int)]
def MyPythonFunc(arg):
i = ctypes.c_int()
if(Python_to_C_Call(arg, i)):
res = i.value
print "toC:", arg, "from C:", res, "FBID:", FBID
else:
print "Failed Python_to_C_Call failed"
res = None
sys.stdout.flush()
return res
]]>
</Python>