1# Copyright (c) 2005 The Regents of The University of Michigan
2# All rights reserved.
3#
4# Redistribution and use in source and binary forms, with or without
5# modification, are permitted provided that the following conditions are
6# met: redistributions of source code must retain the above copyright
7# notice, this list of conditions and the following disclaimer;
8# redistributions in binary form must reproduce the above copyright

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25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26#
27# Authors: Nathan Binkert
28
29import os, popen2, re, sys
30
31class MyPOpen(object):
32 def __init__(self, cmd, input = None, output = None, bufsize = -1):
33 self.status = -1
34
35 if input is None:
36 p2c_read, p2c_write = os.pipe()
37 self.tochild = os.fdopen(p2c_write, 'w', bufsize)
38 else:
39 p2c_write = None
40 if isinstance(input, file):
41 p2c_read = input.fileno()

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59 c2p_write = output.fileno()
60 elif isinstance(output, int):
61 c2p_write = output
62 else:
63 raise AttributeError
64
65 self.pid = os.fork()
66 if self.pid == 0:
67 os.dup2(p2c_read, sys.stdin.fileno())
68 os.dup2(c2p_write, sys.stdout.fileno())
69 os.dup2(c2p_write, sys.stderr.fileno())
70 try:
71 os.execvp(cmd[0], cmd)
72 finally:
73 os._exit(1)
74
75 os.close(p2c_read)
76 os.close(c2p_write)
77
78 def poll(self):
79 if self.status < 0:
80 pid, status = os.waitpid(self.pid, os.WNOHANG)
81 if pid == self.pid:
82 self.status = status
83 return self.status
84
85 def wait(self):
86 if self.status < 0:
87 pid, status = os.waitpid(self.pid, 0)
88 if pid == self.pid:
89 self.status = status
90 return self.status
91
92class qsub:
93 def __init__(self):
94 self.hold = False
95 self.join = False
96 self.keep_stdout = False
97 self.keep_stderr = False
98 self.node_type = ''

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