tests/readlink.py

store: optimize fncache._write by direncoding the contents in one go

For a netbeans clone on Windows 7 x64:

  Before:
    $ hg perffncachewrite
    ! wall 0.210000 comb 0.218401 user 0.202801 sys 0.015600 (best of 47)

  After:
    $ hg perffncachewrite
    ! wall 0.104000 comb 0.109201 user 0.078000 sys 0.031200 (best of 95)

#!/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)