wehub-resource-sync
127 lines
4.0 KiB
Python
127 lines
4.0 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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# pylint: disable=invalid-name
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# ruff: noqa: RUF012
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"""Internal PopenWorker for PopenPool."""
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import logging
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import os
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import pickle
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import struct
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import sys
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import threading
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import traceback
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import cloudpickle
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from tvm.support.popen_pool import StatusKind
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class TimeoutStatus:
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__slot__ = ["status"]
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def __init__(self):
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self.status = StatusKind.RUNNING
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def main():
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"""Main worker function"""
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if len(sys.argv) != 3:
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print("Usage: <read_fd> <write_fd>")
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return
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if sys.platform == "win32":
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# pylint: disable=import-outside-toplevel
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import msvcrt
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reader = os.fdopen(msvcrt.open_osfhandle(int(sys.argv[1]), os.O_BINARY), "rb")
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writer = os.fdopen(msvcrt.open_osfhandle(int(sys.argv[2]), os.O_BINARY), "wb")
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else:
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reader = os.fdopen(int(sys.argv[1]), "rb")
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writer = os.fdopen(int(sys.argv[2]), "wb")
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logging.basicConfig(level=logging.INFO)
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lock = threading.Lock()
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def _respond(ret_value):
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"""Send data back to the client."""
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data = cloudpickle.dumps(ret_value, protocol=pickle.HIGHEST_PROTOCOL)
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writer.write(struct.pack("<i", len(data)))
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writer.write(data)
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writer.flush()
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def _cancel_run(status):
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lock.acquire()
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if status.status == StatusKind.RUNNING:
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_respond((StatusKind.TIMEOUT, TimeoutError()))
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status.status = StatusKind.TIMEOUT
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lock.release()
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while True:
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raw_bytes_size = reader.read(4)
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if len(raw_bytes_size) != 4:
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# the parent exited
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return
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bytes_size = struct.unpack("<i", raw_bytes_size)[0]
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fn, args, kwargs, timeout = cloudpickle.loads(reader.read(bytes_size))
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status = TimeoutStatus()
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if timeout is not None:
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watcher = threading.Timer(timeout, _cancel_run, [status])
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watcher.daemon = True
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watcher.start()
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# pylint: disable=broad-except
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try:
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result = fn(*args, **kwargs)
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ret_value = (StatusKind.COMPLETE, result)
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except Exception as exception:
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msg = traceback.format_exc()
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ret_value = (StatusKind.EXCEPTION, type(exception)(msg))
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if timeout is not None:
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watcher.cancel()
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lock.acquire()
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if status.status == StatusKind.RUNNING:
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_respond(ret_value)
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status.status = StatusKind.COMPLETE
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lock.release()
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if __name__ == "__main__":
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try:
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main()
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except (OSError, KeyboardInterrupt):
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pass
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