[pull] master from aio-libs:master#183
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pull[bot] merged 5 commits intotj-python:masterfrom Mar 30, 2025
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… from `inspect` (#10634)
Improve performance of serializing headers by moving the check for `\r` and `\n` into the write loop instead of making a separate call to check each disallowed character in the Python string.
<!-- Thank you for your contribution! --> ## What do these changes do? Use a `const unsigned char *` for the buffer (Cython will automatically extract is using `__Pyx_PyBytes_AsUString`) as its a lot faster than copying around `PyBytes` objects. We do need to be careful that all slices are bounded and we bound check everything to make sure we do not do an out of bounds read since Cython does not bounds check C strings. I checked that all accesses to `buf_cstr` are proceeded by a bounds check but it would be good to get another set of eyes on that to verify in the `self._state == READ_PAYLOAD` block that we will never try to read out of bounds. <img width="376" alt="Screenshot 2025-03-19 at 10 21 54 AM" src="https://github.com/user-attachments/assets/a340ffa2-f09b-4aff-a4f7-c487dae186c8" /> ## Are there changes in behavior for the user? performance improvement ## Is it a substantial burden for the maintainers to support this? no There is a small risk that someone could remove a bounds check in the future and create a memory safety issue, however in this case its likely we would already be trying to read data that wasn't there if we are missing the bounds checking so the pure python version would throw if we are testing properly. --------- Co-authored-by: Sam Bull <git@sambull.org>
Small code cleanup
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Codecov ReportAll modified and coverable lines are covered by tests ✅
❗ Your organization needs to install the Codecov GitHub app to enable full functionality. Additional details and impacted files@@ Coverage Diff @@
## master #183 +/- ##
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Coverage 98.70% 98.70%
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Files 125 125
Lines 37368 37378 +10
Branches 2064 2064
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+ Hits 36883 36893 +10
Misses 338 338
Partials 147 147
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