Mercurial > hg
view 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 |
children |
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from __future__ import absolute_import import cffi import os ffi = cffi.FFI() ffi.set_source("_bdiff_cffi", open(os.path.join(os.path.join(os.path.dirname(__file__), 'mercurial'), 'bdiff.c')).read(), include_dirs=['mercurial']) ffi.cdef(""" struct bdiff_line { int hash, n, e; ssize_t len; const char *l; }; struct bdiff_hunk; struct bdiff_hunk { int a1, a2, b1, b2; struct bdiff_hunk *next; }; int bdiff_splitlines(const char *a, ssize_t len, struct bdiff_line **lr); int bdiff_diff(struct bdiff_line *a, int an, struct bdiff_line *b, int bn, struct bdiff_hunk *base); void bdiff_freehunks(struct bdiff_hunk *l); void free(void*); """) if __name__ == '__main__': ffi.compile()