Mercurial > hg
annotate setup_bdiff_cffi.py @ 30017:973cf6c3de30
perf: add --reverse to perfrevlog
It can be useful to know how fast we can read revisions from a revlog
in reverse. This operation tends to occur in `hg log` commands,
for example.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sat, 24 Sep 2016 10:44:37 -0700 |
parents | a8933d992a71 |
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1 from __future__ import absolute_import |
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2 |
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3 import cffi |
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4 import os |
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5 |
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6 ffi = cffi.FFI() |
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7 ffi.set_source("_bdiff_cffi", |
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8 open(os.path.join(os.path.join(os.path.dirname(__file__), 'mercurial'), |
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9 'bdiff.c')).read(), include_dirs=['mercurial']) |
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10 ffi.cdef(""" |
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11 struct bdiff_line { |
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12 int hash, n, e; |
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13 ssize_t len; |
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14 const char *l; |
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15 }; |
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16 |
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17 struct bdiff_hunk; |
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18 struct bdiff_hunk { |
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19 int a1, a2, b1, b2; |
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20 struct bdiff_hunk *next; |
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21 }; |
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22 |
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23 int bdiff_splitlines(const char *a, ssize_t len, struct bdiff_line **lr); |
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24 int bdiff_diff(struct bdiff_line *a, int an, struct bdiff_line *b, int bn, |
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25 struct bdiff_hunk *base); |
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26 void bdiff_freehunks(struct bdiff_hunk *l); |
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27 void free(void*); |
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28 """) |
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29 |
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30 if __name__ == '__main__': |
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31 ffi.compile() |