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Copy path__init__.py
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60 lines (41 loc) · 1.41 KB
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import sys
import clr_loader
_RUNTIME = None
_LOADER_ASSEMBLY = None
_FFI = None
_LOADED = False
def set_runtime(runtime):
global _RUNTIME
if _LOADED:
raise RuntimeError("The runtime {} has already been loaded".format(_RUNTIME))
_RUNTIME = runtime
def set_default_runtime() -> None:
if sys.platform == "win32":
set_runtime(clr_loader.get_netfx())
else:
set_runtime(clr_loader.get_mono())
def load():
global _FFI, _LOADED, _LOADER_ASSEMBLY
if _LOADED:
return
from os.path import join, dirname
if _RUNTIME is None:
# TODO: Warn, in the future the runtime must be set explicitly, either
# as a config/env variable or via set_runtime
set_default_runtime()
dll_path = join(dirname(__file__), "runtime", "Python.Runtime.dll")
_LOADER_ASSEMBLY = _RUNTIME.get_assembly(dll_path)
func = _LOADER_ASSEMBLY["Python.Runtime.Loader.Initialize"]
if func(b"") != 0:
raise RuntimeError("Failed to initialize Python.Runtime.dll")
import atexit
atexit.register(unload)
def unload():
global _RUNTIME
if _LOADER_ASSEMBLY is not None:
func = _LOADER_ASSEMBLY["Python.Runtime.Loader.Shutdown"]
if func(b"full_shutdown") != 0:
raise RuntimeError("Failed to call Python.NET shutdown")
if _RUNTIME is not None:
# TODO: Add explicit `close` to clr_loader
_RUNTIME = None