setup_bdiff_cffi.py
author Mads Kiilerich <madski@unity3d.com>
Thu, 27 Oct 2016 20:06:33 +0200
branchstable
changeset 30233 3afde791dce1
parent 29833 a8933d992a71
permissions -rw-r--r--
largefiles: handle that a found standin file doesn't exist when removing it I somehow ended up in a situation where hg crashed on an unlink I introduced in 328545c7d8a1. I don't know how it happened and can't reproduce it. It seems like it only can happen when the file is removed between the time of check in a working directory context walk that finds a standin file, and the time of use when we try to remove it because the corresponding largefile doesn't exist. But better safe than sorry: replace the plain unlink with unlinkpath with ignoremissing=True. That will also remove remaining empty directories, which arguably is more correct.
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from __future__ import absolute_import
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import cffi
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import os
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ffi = cffi.FFI()
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ffi.set_source("_bdiff_cffi",
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    open(os.path.join(os.path.join(os.path.dirname(__file__), 'mercurial'),
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        'bdiff.c')).read(), include_dirs=['mercurial'])
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ffi.cdef("""
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struct bdiff_line {
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    int hash, n, e;
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    ssize_t len;
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    const char *l;
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};
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struct bdiff_hunk;
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struct bdiff_hunk {
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    int a1, a2, b1, b2;
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    struct bdiff_hunk *next;
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};
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int bdiff_splitlines(const char *a, ssize_t len, struct bdiff_line **lr);
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int bdiff_diff(struct bdiff_line *a, int an, struct bdiff_line *b, int bn,
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    struct bdiff_hunk *base);
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void bdiff_freehunks(struct bdiff_hunk *l);
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void free(void*);
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""")
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if __name__ == '__main__':
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    ffi.compile()