/usr/local/lib64/python3.6/site-packages/torch
Edit: /usr/local/lib64/python3.6/site-packages/torch/_deploy.py (3100B)
import io
import torch
from torch.package._package_pickler import create_pickler
from torch.package._package_unpickler import PackageUnpickler
from torch.package import sys_importer, OrderedImporter, PackageImporter, Importer
from torch.serialization import _maybe_decode_ascii
def _save_storages(importer, obj):
serialized_storages = []
serialized_dtypes = []
importer = importer if isinstance(importer, torch.package.PackageImporter) else None
importers: Importer
if importer is not None:
importers = OrderedImporter(importer, sys_importer)
else:
importers = sys_importer
def persistent_id(obj):
# FIXME: the docs say that persistent_id should only return a string
# but torch store returns tuples. This works only in the binary protocol
# see
# https://docs.python.org/2/library/pickle.html#pickling-and-unpickling-external-objects
# https://github.com/python/cpython/blob/master/Lib/pickle.py#L527-L537
if torch.is_storage(obj):
serialized_storages.append(obj)
serialized_dtypes.append(obj.dtype)
return ('storage', len(serialized_storages) - 1)
if hasattr(obj, "__reduce_deploy__"):
if _serialized_reduces.get(id(obj)) is None:
_serialized_reduces[id(obj)] = (
"reduce_deploy",
id(obj),
*obj.__reduce_deploy__(importers),
)
return _serialized_reduces[id(obj)]
return None
# Write the pickle data for `obj`
data_buf = io.BytesIO()
pickler = create_pickler(data_buf, importers)
pickler.persistent_id = persistent_id
pickler.dump(obj)
data_value = data_buf.getvalue()
return data_value, serialized_storages, serialized_dtypes, importer.zip_reader if importer else None
def _load_storages(id, zip_reader, obj_bytes, serialized_storages):
def persistent_load(saved_id):
assert isinstance(saved_id, tuple)
typename = _maybe_decode_ascii(saved_id[0])
data = saved_id[1:]
if typename == 'storage':
return serialized_storages[data[0]]
if typename == 'reduce_deploy':
reduce_id, func, args = data
if reduce_id not in _loaded_reduces:
_loaded_reduces[reduce_id] = func(_raw_packages[zip_reader], *args)
return _loaded_reduces[reduce_id]
return None
importer: Importer
if zip_reader is not None:
importer = OrderedImporter(_get_package(zip_reader), sys_importer)
else:
importer = sys_importer
unpickler = PackageUnpickler(importer, io.BytesIO(obj_bytes))
unpickler.persistent_load = persistent_load
result = _deploy_objects[id] = unpickler.load()
return result
def _get_package(zip_reader):
if zip_reader not in _raw_packages:
_raw_packages[zip_reader] = PackageImporter(zip_reader)
return _raw_packages[zip_reader]
_raw_packages: dict = {}
_deploy_objects: dict = {}
_serialized_reduces: dict = {}
_loaded_reduces: dict = {}