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| author | Cody Maloney <cmaloney@users.noreply.github.com> | 2025-02-07 03:06:11 -0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-02-07 12:06:11 +0100 |
| commit | a3d5aab9a89e311cded9c724ce7d5a873e4d680d (patch) | |
| tree | a9414f49045a51f457a3ea93e4841d4a65e8212f /Python/generated_cases.c.h | |
| parent | ae132edc296d27c6ed04fe4d400c67e3cfb622e8 (diff) | |
| download | cpython-a3d5aab9a89e311cded9c724ce7d5a873e4d680d.tar.gz cpython-a3d5aab9a89e311cded9c724ce7d5a873e4d680d.zip | |
gh-129005: Align FileIO.readall between _pyio and _io (#129705)
Utilize `bytearray.resize()` and `os.readinto()` to reduce copies
and match behavior of `_io.FileIO.readall()`.
There is still an extra copy which means twice the memory required
compared to FileIO because there isn't a zero-copy path from
`bytearray` -> `bytes` currently.
On my system reading a 2 GB file:
`./python -m test -M8g -uall test_largefile -m test.test_largefile.PyLargeFileTest.test_large_read -v`
Goes from ~2.7 seconds -> ~2.2 seconds
Co-authored-by: Victor Stinner <vstinner@python.org>
Diffstat (limited to 'Python/generated_cases.c.h')
0 files changed, 0 insertions, 0 deletions