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apache--tvm/python/tvm/testing/popen_pool.py
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chore: import upstream snapshot with attribution
2026-07-13 13:36:25 +08:00

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Python

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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
#
# http://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.
# pylint: disable=invalid-name, missing-function-docstring
"""Helper functions for popen_pool test cases.
These functions run inside PopenWorker subprocesses and must live in an
importable module (cloudpickle resolves them by module + qualname). The
previous version used FFI helpers (testing.sleep_in_ffi, testing.identity_cpp,
etc.) that were removed with ffi_testing.cc. This version is pure-Python and
uses time.sleep for any blocking needed by the timeout test.
"""
import time
import tvm_ffi
TEST_GLOBAL_STATE_1 = 0
TEST_GLOBAL_STATE_2 = 0
TEST_GLOBAL_STATE_3 = 0
def initializer(test_global_state_1, test_global_state_2, test_global_state_3):
global TEST_GLOBAL_STATE_1, TEST_GLOBAL_STATE_2, TEST_GLOBAL_STATE_3
TEST_GLOBAL_STATE_1 = test_global_state_1
TEST_GLOBAL_STATE_2 = test_global_state_2
TEST_GLOBAL_STATE_3 = test_global_state_3
def after_initializer():
global TEST_GLOBAL_STATE_1, TEST_GLOBAL_STATE_2, TEST_GLOBAL_STATE_3
return TEST_GLOBAL_STATE_1, TEST_GLOBAL_STATE_2, TEST_GLOBAL_STATE_3
@tvm_ffi.register_global_func("testing.identity_py", override=True)
def identity_py(arg):
return arg
def register_ffi():
@tvm_ffi.register_global_func("testing.nested_identity_py", override=True)
def _identity_py(arg): # pylint: disable=unused-variable
return arg
def call_py_ffi(arg):
_identity_py = tvm_ffi.get_global_func("testing.nested_identity_py")
return _identity_py(arg)
def call_cpp_ffi(arg):
import tvm # pylint: disable=import-outside-toplevel
return tvm.testing.echo(arg)
def call_cpp_py_ffi(arg):
# Call the Python-registered identity function through the FFI registry,
# exercising the same cross-language dispatch path that identity_cpp covered.
_identity = tvm_ffi.get_global_func("testing.identity_py")
return _identity(arg)
def timeout_job(seconds):
# Previously called testing.sleep_in_ffi (C++ FFI helper, now removed).
# Plain time.sleep is sufficient — the PopenPoolExecutor timeout mechanism
# watches wall-clock time and terminates the process just the same.
time.sleep(seconds)