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gh-123471: Make itertools.chain thread-safe #135689

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Merged
kumaraditya303 merged 6 commits into from
Jun 30, 2025
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gh-123471: Make itertools.chain thread-safe #135689

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678f29e
Make itertools.chain thread-safe
eendebakpt Jun 18, 2025
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📜🤖 Added by blurb_it.
blurb-it[bot] Jun 18, 2025
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eendebakpt Jun 19, 2025
e19457e
Merge branch 'main' into chain_next
eendebakpt Jun 19, 2025
af6ba4e
review comment
eendebakpt Jun 20, 2025
6a3e402
Merge branch 'main' into chain_next
eendebakpt Jun 20, 2025
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Co-authored-by: Peter Bierma <zintensitydev@gmail.com>
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@eendebakpt @ZeroIntensity
eendebakpt and ZeroIntensity authored Jun 19, 2025
commit 07881aca9f463e0cb83122d5b946c866a0577685
2 changes: 1 addition & 1 deletion Misc/NEWS.d/next/Library/2025-06-18-19-25-32.gh-issue-123471.lx1Xbt.rst
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@@ -1 +1 @@
Make concurrent iterations over :class:`itertools.chain` safe under free-threading.
Make concurrent iterations over :class:`itertools.chain` safe under :term:`free threading`.
2 changes: 1 addition & 1 deletion Modules/itertoolsmodule.c
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Expand Up @@ -1922,7 +1922,7 @@ chain_next_lock_held(PyObject *op)
static PyObject *
chain_next(PyObject *op)
{
PyObject * result;
PyObject *result;
Py_BEGIN_CRITICAL_SECTION(op);
result = chain_next_lock_held(op);
Py_END_CRITICAL_SECTION()
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