Message137143
I started a draft in python. I am attaching the _pyio version along with tests. I will continue work on the C implementation and eventually documentation if this is well received. It seems straightforward, I am interested to see what you guys think.
Also, there are now 2 places which use hasattr(self, "peek"). I was wondering if it would make sense to add peek() to BufferedIOBase and raise UnsupportedOperation or return b"".
Some benchmarks..
$ ./python -m timeit -s "from _pyio import open;f = open('LICENSE', 'rb'); b=bytearray(128)" 'while f.prefetch(b, 4, 4): pass'
_pyio.BufferedIOBase.prefetch:
100000 loops, best of 3: 10.6 usec per loop
_pyio.BufferedReader.prefetch:
100000 loops, best of 3: 6 usec per loop
$ ./python -m timeit -s "from _pyio import open;f = open('LICENSE', 'rb');b=bytearray(4);" 'while f.read(4): f.readinto(b)'
100000 loops, best of 3: 5.07 usec per loop |
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Date |
User |
Action |
Args |
2011-05-28 19:17:14 | jcon | set | recipients:
+ jcon, pitrou, vstinner, nadeem.vawda, benjamin.peterson, stutzbach |
2011-05-28 19:17:14 | jcon | set | messageid: <1306610234.1.0.791958193778.issue12053@psf.upfronthosting.co.za> |
2011-05-28 19:17:13 | jcon | link | issue12053 messages |
2011-05-28 19:17:13 | jcon | create | |
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