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1 #coding: iso-8859-1; 2 ############################################################################ 3 # # 4 # This file 'threadutils/__init__.py' # 5 # is part of 'SPyRO: Simple Python Remote Objects' # 6 # Copyright (C) 2004-2005 by Eric Sadit Téllez Avila # 7 # sadit@lsc.fie.umich.mx or donsadit@gmail.com # 8 # # 9 # This program is free software; you can redistribute it and#or modify # 10 # it under the terms of the GNU General Public License as published by # 11 # the Free Software Foundation; either version 2 of the License, or # 12 # (at your option) any later version. # 13 # # 14 # This program is distributed in the hope that it will be useful, # 15 # but WITHOUT ANY WARRANTY; without even the implied warranty of # 16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # 17 # GNU General Public License for more details. # 18 # # 19 # You should have received a copy of the GNU General Public License # 20 # along with this program; if not, write to the # 21 # Free Software Foundation, Inc., # 22 # 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. # 23 ############################################################################ 24 25 from PeriodicExecution import * 26 from ServerInThread import * 27 from ThreadPool import * 28 import warn 29 warn = warn.Warn('threadutils') 30 31 __doc__ = """ Thread utilities or useful classes based on thread usage """ 32 __version__ = '0.1' 33 34 __all__ = [ "PeriodicExecution", "ServerInThread", "ThreadPool", "ThreadPoolShared", "forkdaemon"] 35 36 import os, sys 3738 -def forkdaemon(new_stdout=None,new_stderr=None,new_stdin=None, 39 new_cwd=os.getcwd(),msg=None):40 """ A simple (not double fork) daemon generator. """ 41 try: 42 child = os.fork() 43 if child > 0: 44 sys.exit(0) 45 except OSError, e: 46 warn.warn("Fork: %d (%s)" % (e.errno, e.strerror)) 47 sys.exit(1) 48 os.chdir(new_cwd) 49 os.setsid() 50 os.umask(0) 51 if new_stderr is None: 52 errfile = open("/dev/null","wb+") 53 else: 54 errfile = new_stderr 55 56 if new_stdout is None: 57 outfile = open("/dev/null","wb+") 58 else: 59 outfile = new_stdout 60 61 if new_stdin is None: 62 infile = open("/dev/null","rb") 63 else: 64 infile = new_stdin 65 os.dup2(errfile.fileno(), sys.stderr.fileno()) 66 os.dup2(outfile.fileno(), sys.stdout.fileno()) 67 os.dup2( infile.fileno(), sys.stdin.fileno())68
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