36 lines
1.1 KiB
Python
36 lines
1.1 KiB
Python
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import mmap
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from joblib import Parallel, delayed
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from joblib.backports import concurrency_safe_rename, make_memmap
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from joblib.test.common import with_numpy
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from joblib.testing import parametrize
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@with_numpy
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def test_memmap(tmpdir):
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fname = tmpdir.join("test.mmap").strpath
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size = 5 * mmap.ALLOCATIONGRANULARITY
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offset = mmap.ALLOCATIONGRANULARITY + 1
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memmap_obj = make_memmap(fname, shape=size, mode="w+", offset=offset)
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assert memmap_obj.offset == offset
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@parametrize("dst_content", [None, "dst content"])
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@parametrize("backend", [None, "threading"])
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def test_concurrency_safe_rename(tmpdir, dst_content, backend):
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src_paths = [tmpdir.join("src_%d" % i) for i in range(4)]
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for src_path in src_paths:
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src_path.write("src content")
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dst_path = tmpdir.join("dst")
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if dst_content is not None:
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dst_path.write(dst_content)
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Parallel(n_jobs=4, backend=backend)(
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delayed(concurrency_safe_rename)(src_path.strpath, dst_path.strpath)
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for src_path in src_paths
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)
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assert dst_path.exists()
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assert dst_path.read() == "src content"
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for src_path in src_paths:
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assert not src_path.exists()
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