Revert the switch to futures for now

Without it, we get random hangs on parse failure. With it, some folks have
seen hangs even on successful cases. The former is clearly less problematic.
This is temporary, until I can finish investigating the root causes of both
issues.

(Bitbake rev: db689a99beffea1a285cdfc74a58fe73f1666987)

Signed-off-by: Christopher Larson <kergoth@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 0 insertions, 101 deletions

diff --git a/bitbake/lib/concurrent/futures/_compat.py b/bitbake/lib/concurrent/futures/_compat.py
deleted file mode 100644
index 11462326b5..0000000000
--- a/bitbake/lib/concurrent/futures/_compat.py
+++ /dev/null
@@ -1,101 +0,0 @@
-from keyword import iskeyword as _iskeyword
-from operator import itemgetter as _itemgetter
-import sys as _sys
-
-
-def namedtuple(typename, field_names):
-    """Returns a new subclass of tuple with named fields.
-
-    >>> Point = namedtuple('Point', 'x y')
-    >>> Point.__doc__                   # docstring for the new class
-    'Point(x, y)'
-    >>> p = Point(11, y=22)             # instantiate with positional args or keywords
-    >>> p[0] + p[1]                     # indexable like a plain tuple
-    33
-    >>> x, y = p                        # unpack like a regular tuple
-    >>> x, y
-    (11, 22)
-    >>> p.x + p.y                       # fields also accessable by name
-    33
-    >>> d = p._asdict()                 # convert to a dictionary
-    >>> d['x']
-    11
-    >>> Point(**d)                      # convert from a dictionary
-    Point(x=11, y=22)
-    >>> p._replace(x=100)               # _replace() is like str.replace() but targets named fields
-    Point(x=100, y=22)
-
-    """
-
-    # Parse and validate the field names.  Validation serves two purposes,
-    # generating informative error messages and preventing template injection attacks.
-    if isinstance(field_names, basestring):
-        field_names = field_names.replace(',', ' ').split() # names separated by whitespace and/or commas
-    field_names = tuple(map(str, field_names))
-    for name in (typename,) + field_names:
-        if not all(c.isalnum() or c=='_' for c in name):
-            raise ValueError('Type names and field names can only contain alphanumeric characters and underscores: %r' % name)
-        if _iskeyword(name):
-            raise ValueError('Type names and field names cannot be a keyword: %r' % name)
-        if name[0].isdigit():
-            raise ValueError('Type names and field names cannot start with a number: %r' % name)
-    seen_names = set()
-    for name in field_names:
-        if name.startswith('_'):
-            raise ValueError('Field names cannot start with an underscore: %r' % name)
-        if name in seen_names:
-            raise ValueError('Encountered duplicate field name: %r' % name)
-        seen_names.add(name)
-
-    # Create and fill-in the class template
-    numfields = len(field_names)
-    argtxt = repr(field_names).replace("'", "")[1:-1]   # tuple repr without parens or quotes
-    reprtxt = ', '.join('%s=%%r' % name for name in field_names)
-    dicttxt = ', '.join('%r: t[%d]' % (name, pos) for pos, name in enumerate(field_names))
-    template = '''class %(typename)s(tuple):
-        '%(typename)s(%(argtxt)s)' \n
-        __slots__ = () \n
-        _fields = %(field_names)r \n
-        def __new__(_cls, %(argtxt)s):
-            return _tuple.__new__(_cls, (%(argtxt)s)) \n
-        @classmethod
-        def _make(cls, iterable, new=tuple.__new__, len=len):
-            'Make a new %(typename)s object from a sequence or iterable'
-            result = new(cls, iterable)
-            if len(result) != %(numfields)d:
-                raise TypeError('Expected %(numfields)d arguments, got %%d' %% len(result))
-            return result \n
-        def __repr__(self):
-            return '%(typename)s(%(reprtxt)s)' %% self \n
-        def _asdict(t):
-            'Return a new dict which maps field names to their values'
-            return {%(dicttxt)s} \n
-        def _replace(_self, **kwds):
-            'Return a new %(typename)s object replacing specified fields with new values'
-            result = _self._make(map(kwds.pop, %(field_names)r, _self))
-            if kwds:
-                raise ValueError('Got unexpected field names: %%r' %% kwds.keys())
-            return result \n
-        def __getnewargs__(self):
-            return tuple(self) \n\n''' % locals()
-    for i, name in enumerate(field_names):
-        template += '        %s = _property(_itemgetter(%d))\n' % (name, i)
-
-    # Execute the template string in a temporary namespace and
-    # support tracing utilities by setting a value for frame.f_globals['__name__']
-    namespace = dict(_itemgetter=_itemgetter, __name__='namedtuple_%s' % typename,
-                     _property=property, _tuple=tuple)
-    try:
-        exec(template, namespace)
-    except SyntaxError:
-        e = _sys.exc_info()[1]
-        raise SyntaxError(e.message + ':\n' + template)
-    result = namespace[typename]
-
-    # For pickling to work, the __module__ variable needs to be set to the frame
-    # where the named tuple is created.  Bypass this step in enviroments where
-    # sys._getframe is not defined (Jython for example).
-    if hasattr(_sys, '_getframe'):
-        result.__module__ = _sys._getframe(1).f_globals.get('__name__', '__main__')
-
-    return result