This code shows how to manage modules lifecycle via DLLWrapper.
Test on Linux:
(xu_pytorch) xu@xu-G3-3590:~/xu_github/ctypes_all_lifecycle$ python ctypes_cycle.py
cpp_code: /home/xu/xu_github/ctypes_all_lifecycle/csrc/test_cpp.cpp
module_path: /home/xu/xu_github/ctypes_all_lifecycle/csrc/test_cpp.so
Linux --> initialize
cpp_add --> c: 3
Linux -- > finalize
Linux --> initialize
cpp_add --> c: 5
Linux -- > finalize
(xu_pytorch) xu@xu-G3-3590:~/xu_github/ctypes_all_lifecycle$Test on Windows:
(win_mkl_static) D:\xu_git\ctypes_all_lifecycle>python ctypes_cycle.py
cpp_code: D:\xu_git\ctypes_all_lifecycle\csrc\test_cpp.cpp
module_path: D:/xu_git/ctypes_all_lifecycle/csrc/test_cpp.pyd
Win --> initialize
cpp_add --> c: 3
Win --> finalize
Win --> initialize
cpp_add --> c: 5
Win --> finalize
(win_mkl_static) D:\xu_git\ctypes_all_lifecycle>This code shows how to manage modules lifecycle via CDLL. CDLL doesn't have close attribute, and it will raise error on Windows. I write a unload_module_from_path function to close module.
Test on Linux:
(xu_pytorch) xu@xu-G3-3590:~/xu_github/ctypes_all_lifecycle$ python ctypes_from_path.py
cpp_code: /home/xu/xu_github/ctypes_all_lifecycle/csrc/test_cpp.cpp
module_path: /home/xu/xu_github/ctypes_all_lifecycle/csrc/test_cpp.so
Linux --> initialize
cpp_add --> c: 3
close module success
remove module_path success.
cpp_add --> c: 5
Linux -- > finalize
(xu_pytorch) xu@xu-G3-3590:~/xu_github/ctypes_all_lifecycle$Test on Windows:
(win_mkl_static) D:\xu_git\ctypes_all_lifecycle>python ctypes_from_path.py
cpp_code: D:\xu_git\ctypes_all_lifecycle\csrc\test_cpp.cpp
module_path: D:/xu_git/ctypes_all_lifecycle/csrc/test_cpp.pyd
Win --> initialize
cpp_add --> c: 3
close exception: function 'close' not found
remove exception: [WinError 5] 拒绝访问。: 'D:/xu_git/ctypes_all_lifecycle/csrc/test_cpp.pyd'
Win --> finalize
retry remove module_path success.
Win --> initialize
cpp_add --> c: 5
Win --> finalize