Source Code for Module processes

 1  ############################################################################### 
 2  #                                                                             # 
 3  # Copyright (C) 2004 Edward d'Auvergne                                        # 
 4  #                                                                             # 
 5  # This file is part of the program relax.                                     # 
 6  #                                                                             # 
 7  # relax is free software; you can redistribute it and/or modify               # 
 8  # it under the terms of the GNU General Public License as published by        # 
 9  # the Free Software Foundation; either version 2 of the License, or           # 
10  # (at your option) any later version.                                         # 
11  #                                                                             # 
12  # relax is distributed in the hope that it will be useful,                    # 
13  # but WITHOUT ANY WARRANTY; without even the implied warranty of              # 
14  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               # 
15  # GNU General Public License for more details.                                # 
16  #                                                                             # 
17  # You should have received a copy of the GNU General Public License           # 
18  # along with relax; if not, write to the Free Software                        # 
19  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA   # 
20  #                                                                             # 
21  ############################################################################### 
22   
23  from os import popen3, system 
24  from popen2 import Popen3 
25   
26  # UNIX only module. 
27  try: 
28      from os import kill 
29      kill_module = 1 
30  except ImportError: 
31      kill_module = 0 
32   
33   
34   
35 -class RelaxPopen3(Popen3): 
36 -    def __init__(self, cmd, capturestderr=0, bufsize=-1): 
37          """Extended Popen3 class.""" 
38   
39          # Run the init function of the Popen3 class. 
40          Popen3.__init__(self, cmd, capturestderr, bufsize) 
41   
42   
43 -    def kill(self, login_cmd=None, sig=9): 
44          """Function for killing the child process.""" 
45   
46          # Don't do anything if the child process has already finished. 
47          if self.poll() != -1: 
48              return 
49   
50          # Kill the child process (or pass silently if the PID no longer exists). 
51          if kill_module: 
52              try: 
53                  kill(self.pid, sig) 
54              except: 
55                  pass 
56   
57          # Kill the relax process spawned by the thread. 
58          if hasattr(self, 'relax_pid') and self.relax_pid != None: 
59              # Kill command. 
60              kill_cmd = 'kill -%s %s' % (sig, self.relax_pid) 
61   
62              # Remote relax process. 
63              if login_cmd: 
64                  kill_cmd = login_cmd + " \"" + kill_cmd + "\"" 
65   
66              # Kill relax. 
67              stdin, stdout, stderr = popen3(kill_cmd) 
68