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#!/usr/bin/env python3
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# Copyright (c) Facebook, Inc. and its affiliates.
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#
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# This source code is licensed under the MIT license found in the
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# LICENSE file in the root directory of this source tree.
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import os
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import sys
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import fcntl
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import subprocess
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TESTS_DIR = os.path.dirname(os.path.realpath(__file__))
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LOCKFILE = os.path.join(TESTS_DIR, 'testlock.mutex')
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args = sys.argv[1:]
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with open(LOCKFILE, 'r') as lockfile:
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fd = lockfile.fileno()
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fcntl.flock(fd, fcntl.LOCK_EX)
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try:
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subprocess.call(args)
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finally:
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fcntl.flock(fd, fcntl.LOCK_UN)
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