FM / multiprocessing

/opt/alt/python27/lib64/python2.7/multiprocessing/

/opt/alt/python27/lib64/python2.7/multiprocessing

Name	Size	Mode	Actions
dummy/	-	0755	rm
connection.py	15007	0644	edit dl rm
connection.pyc	15134	0644	edit dl rm
connection.pyo	14987	0644	edit dl rm
forking.py	17157	0644	edit dl rm
forking.pyc	14903	0644	edit dl rm
forking.pyo	14744	0644	edit dl rm
heap.py	8581	0644	edit dl rm
heap.pyc	7169	0644	edit dl rm
heap.pyo	6799	0644	edit dl rm
managers.py	36715	0644	edit dl rm
managers.pyc	39790	0644	edit dl rm
managers.pyo	39189	0644	edit dl rm
pool.py	24201	0644	edit dl rm
pool.pyc	23346	0644	edit dl rm
pool.pyo	22830	0644	edit dl rm
process.py	9684	0644	edit dl rm
process.pyc	9942	0644	edit dl rm
process.pyo	9189	0644	edit dl rm
queues.py	12296	0644	edit dl rm
queues.pyc	11954	0644	edit dl rm
queues.pyo	11857	0644	edit dl rm
reduction.py	6582	0644	edit dl rm
reduction.pyc	6235	0644	edit dl rm
reduction.pyo	6235	0644	edit dl rm
sharedctypes.py	7756	0644	edit dl rm
sharedctypes.pyc	8970	0644	edit dl rm
sharedctypes.pyo	8889	0644	edit dl rm
synchronize.py	10654	0644	edit dl rm
synchronize.pyc	11532	0644	edit dl rm
synchronize.pyo	11199	0644	edit dl rm
util.py	11006	0644	edit dl rm
util.pyc	10509	0644	edit dl rm
util.pyo	10404	0644	edit dl rm
__init__.py	7805	0644	edit dl rm
__init__.pyc	8803	0644	edit dl rm
__init__.pyo	8803	0644	edit dl rm

Edit: /opt/alt/python27/lib64/python2.7/multiprocessing/sharedctypes.py (7756B)

#
# Module which supports allocation of ctypes objects from shared memory
#
# multiprocessing/sharedctypes.py
#
# Copyright (c) 2006-2008, R Oudkerk
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. Neither the name of author nor the names of any contributors may be
#    used to endorse or promote products derived from this software
#    without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#

import sys
import ctypes
import weakref

from multiprocessing import heap, RLock
from multiprocessing.forking import assert_spawning, ForkingPickler

__all__ = ['RawValue', 'RawArray', 'Value', 'Array', 'copy', 'synchronized']

#
#
#

typecode_to_type = {
    'c': ctypes.c_char,
    'b': ctypes.c_byte,  'B': ctypes.c_ubyte,
    'h': ctypes.c_short, 'H': ctypes.c_ushort,
    'i': ctypes.c_int,   'I': ctypes.c_uint,
    'l': ctypes.c_long,  'L': ctypes.c_ulong,
    'f': ctypes.c_float, 'd': ctypes.c_double
    }
try:
    typecode_to_type['u'] = ctypes.c_wchar
except AttributeError:
    pass

#
#
#

def _new_value(type_):
    size = ctypes.sizeof(type_)
    wrapper = heap.BufferWrapper(size)
    return rebuild_ctype(type_, wrapper, None)

def RawValue(typecode_or_type, *args):
    '''
    Returns a ctypes object allocated from shared memory
    '''
    type_ = typecode_to_type.get(typecode_or_type, typecode_or_type)
    obj = _new_value(type_)
    ctypes.memset(ctypes.addressof(obj), 0, ctypes.sizeof(obj))
    obj.__init__(*args)
    return obj

def RawArray(typecode_or_type, size_or_initializer):
    '''
    Returns a ctypes array allocated from shared memory
    '''
    type_ = typecode_to_type.get(typecode_or_type, typecode_or_type)
    if isinstance(size_or_initializer, (int, long)):
        type_ = type_ * size_or_initializer
        obj = _new_value(type_)
        ctypes.memset(ctypes.addressof(obj), 0, ctypes.sizeof(obj))
        return obj
    else:
        type_ = type_ * len(size_or_initializer)
        result = _new_value(type_)
        result.__init__(*size_or_initializer)
        return result

def Value(typecode_or_type, *args, **kwds):
    '''
    Return a synchronization wrapper for a Value
    '''
    lock = kwds.pop('lock', None)
    if kwds:
        raise ValueError('unrecognized keyword argument(s): %s' % kwds.keys())
    obj = RawValue(typecode_or_type, *args)
    if lock is False:
        return obj
    if lock in (True, None):
        lock = RLock()
    if not hasattr(lock, 'acquire'):
        raise AttributeError("'%r' has no method 'acquire'" % lock)
    return synchronized(obj, lock)

def Array(typecode_or_type, size_or_initializer, **kwds):
    '''
    Return a synchronization wrapper for a RawArray
    '''
    lock = kwds.pop('lock', None)
    if kwds:
        raise ValueError('unrecognized keyword argument(s): %s' % kwds.keys())
    obj = RawArray(typecode_or_type, size_or_initializer)
    if lock is False:
        return obj
    if lock in (True, None):
        lock = RLock()
    if not hasattr(lock, 'acquire'):
        raise AttributeError("'%r' has no method 'acquire'" % lock)
    return synchronized(obj, lock)

def copy(obj):
    new_obj = _new_value(type(obj))
    ctypes.pointer(new_obj)[0] = obj
    return new_obj

def synchronized(obj, lock=None):
    assert not isinstance(obj, SynchronizedBase), 'object already synchronized'

if isinstance(obj, ctypes._SimpleCData):
        return Synchronized(obj, lock)
    elif isinstance(obj, ctypes.Array):
        if obj._type_ is ctypes.c_char:
            return SynchronizedString(obj, lock)
        return SynchronizedArray(obj, lock)
    else:
        cls = type(obj)
        try:
            scls = class_cache[cls]
        except KeyError:
            names = [field[0] for field in cls._fields_]
            d = dict((name, make_property(name)) for name in names)
            classname = 'Synchronized' + cls.__name__
            scls = class_cache[cls] = type(classname, (SynchronizedBase,), d)
        return scls(obj, lock)

#
# Functions for pickling/unpickling
#

def reduce_ctype(obj):
    assert_spawning(obj)
    if isinstance(obj, ctypes.Array):
        return rebuild_ctype, (obj._type_, obj._wrapper, obj._length_)
    else:
        return rebuild_ctype, (type(obj), obj._wrapper, None)

def rebuild_ctype(type_, wrapper, length):
    if length is not None:
        type_ = type_ * length
    ForkingPickler.register(type_, reduce_ctype)
    obj = type_.from_address(wrapper.get_address())
    obj._wrapper = wrapper
    return obj

#
# Function to create properties
#

def make_property(name):
    try:
        return prop_cache[name]
    except KeyError:
        d = {}
        exec template % ((name,)*7) in d
        prop_cache[name] = d[name]
        return d[name]

template = '''
def get%s(self):
    self.acquire()
    try:
        return self._obj.%s
    finally:
        self.release()
def set%s(self, value):
    self.acquire()
    try:
        self._obj.%s = value
    finally:
        self.release()
%s = property(get%s, set%s)
'''

prop_cache = {}
class_cache = weakref.WeakKeyDictionary()

#
# Synchronized wrappers
#

class SynchronizedBase(object):

def __init__(self, obj, lock=None):
        self._obj = obj
        self._lock = lock or RLock()
        self.acquire = self._lock.acquire
        self.release = self._lock.release

def __reduce__(self):
        assert_spawning(self)
        return synchronized, (self._obj, self._lock)

def get_obj(self):
        return self._obj

def get_lock(self):
        return self._lock

def __repr__(self):
        return '<%s wrapper for %s>' % (type(self).__name__, self._obj)

class Synchronized(SynchronizedBase):
    value = make_property('value')

class SynchronizedArray(SynchronizedBase):

def __len__(self):
        return len(self._obj)

def __getitem__(self, i):
        self.acquire()
        try:
            return self._obj[i]
        finally:
            self.release()

def __setitem__(self, i, value):
        self.acquire()
        try:
            self._obj[i] = value
        finally:
            self.release()

def __getslice__(self, start, stop):
        self.acquire()
        try:
            return self._obj[start:stop]
        finally:
            self.release()

def __setslice__(self, start, stop, values):
        self.acquire()
        try:
            self._obj[start:stop] = values
        finally:
            self.release()

class SynchronizedString(SynchronizedArray):
    value = make_property('value')
    raw = make_property('raw')

cmd: