mirror of
https://github.com/ROCm/jax.git
synced 2025-04-19 05:16:06 +00:00
0974b5a4ba
Use os.replace() for cross-platform renaming with overwriting. See https://bugs.python.org/issue8828. Note, per the implementation, it is not atomic on Windows as for UNIX.
56 lines
1.9 KiB
Python
56 lines
1.9 KiB
Python
# Copyright 2022 The JAX Authors.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# https://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
import os
|
|
|
|
from jax._src import path as pathlib
|
|
from jax._src.compilation_cache_interface import CacheInterface
|
|
|
|
class GFileCache(CacheInterface):
|
|
|
|
def __init__(self, path: str):
|
|
"""Sets up a cache at 'path'. Cached values may already be present."""
|
|
self._path = pathlib.Path(path)
|
|
self._path.mkdir(parents=True, exist_ok=True)
|
|
|
|
def get(self, key: str):
|
|
"""Returns None if 'key' isn't present."""
|
|
if not key:
|
|
raise ValueError("key cannot be empty")
|
|
path_to_key = self._path / key
|
|
if path_to_key.exists():
|
|
return path_to_key.read_bytes()
|
|
else:
|
|
return None
|
|
|
|
def put(self, key: str, value: bytes):
|
|
"""Adds new cache entry."""
|
|
if not key:
|
|
raise ValueError("key cannot be empty")
|
|
path_to_new_file = self._path / key
|
|
if str(path_to_new_file).startswith('gs://'):
|
|
# Writes to gcs are atomic.
|
|
path_to_new_file.write_bytes(value)
|
|
elif str(path_to_new_file).startswith('file://') or '://' not in str(path_to_new_file):
|
|
tmp_path = self._path / f"_temp_{key}"
|
|
with open(str(tmp_path), "wb") as f:
|
|
f.write(value)
|
|
f.flush()
|
|
os.fsync(f.fileno())
|
|
os.replace(tmp_path, path_to_new_file)
|
|
else:
|
|
tmp_path = self._path / f"_temp_{key}"
|
|
tmp_path.write_bytes(value)
|
|
tmp_path.replace(str(path_to_new_file))
|