view tests/readlink.py @ 16665:e410be860393

revlog: speed up prefix matching against nodes

The radix tree already contains all the information we need to
determine whether a short string is an unambiguous node identifier.
We now make use of this information.

In a kernel tree, this improves the performance of
"hg log -q -r24bf01de75" from 0.27 seconds to 0.06.

#!/usr/bin/env python

import errno, os, sys

for f in sys.argv[1:]:
    try:
        print f, '->', os.readlink(f)
    except OSError, err:
        if err.errno != errno.EINVAL:
            raise
        print f, 'not a symlink'

sys.exit(0)