/usr/lib/python2.7/dist-packages/rekall/threadpool.py is in python-rekall-core 1.6.0+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 | # Rekall Memory Forensics
#
# Copyright 2013 Google Inc. All Rights Reserved.
#
# Authors:
# Michael Cohen <scudette@gmail.com>
# Copyright (c) 2012
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at
# your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
import logging
import threading
import traceback
import Queue
# Simple threadpool implementation - we just run all tests in the pool for
# maximum concurrency.
class Worker(threading.Thread):
"""A Threadpool worker.
Reads jobs from the queue and runs them. Quits when a None job is received
on the queue.
"""
def __init__(self, queue):
super(Worker, self).__init__()
self.queue = queue
self.daemon = True
# Start the thread immediately.
self.start()
def run(self):
while True:
# Get a callable from the queue.
task, args, kwargs = self.queue.get()
try:
# Stop the worker by sending it a task of None.
if task is None:
break
on_error = kwargs.pop("on_error")
if on_error is None:
on_error = lambda x: None
task(*args, **kwargs)
except Exception as e:
print e
logging.error("Worker raised %s", e)
traceback.print_exc()
on_error(e)
finally:
self.queue.task_done()
class ThreadPool(object):
lock = threading.Lock()
def __init__(self, number_of_threads):
self.number_of_threads = number_of_threads
self.queue = Queue.Queue(2 * number_of_threads)
self.workers = [Worker(self.queue) for _ in range(number_of_threads)]
def Stop(self):
"""Stop all the threads when they are ready."""
self.queue.join()
# Send all workers the stop message.
for worker in self.workers:
self.AddTask(None)
for worker in self.workers:
worker.join()
def AddTask(self, task, args=None, kwargs=None, on_error=None):
if kwargs is None:
kwargs = {}
kwargs["on_error"] = on_error
self.queue.put((task, args or [], kwargs))
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