author | Shane McErlean <shane.mcerlean@accenture.com> |
Fri, 27 Aug 2010 15:33:49 +0100 | |
changeset 101 | 1e82a8be084a |
parent 1 | 2fb8b9db1c86 |
permissions | -rw-r--r-- |
1
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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1 |
"""Spawn a command with pipes to its stdin, stdout, and optionally stderr. |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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2 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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3 |
The normal os.popen(cmd, mode) call spawns a shell command and provides a |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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4 |
file interface to just the input or output of the process depending on |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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5 |
whether mode is 'r' or 'w'. This module provides the functions popen2(cmd) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
6 |
and popen3(cmd) which return two or three pipes to the spawned command. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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7 |
""" |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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8 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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9 |
import os |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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10 |
import sys |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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11 |
import warnings |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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12 |
warnings.warn("The popen2 module is deprecated. Use the subprocess module.", |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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13 |
DeprecationWarning, stacklevel=2) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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14 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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15 |
__all__ = ["popen2", "popen3", "popen4"] |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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16 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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17 |
try: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
18 |
MAXFD = os.sysconf('SC_OPEN_MAX') |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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19 |
except (AttributeError, ValueError): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
20 |
MAXFD = 256 |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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21 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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22 |
_active = [] |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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23 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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24 |
def _cleanup(): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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25 |
for inst in _active[:]: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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26 |
if inst.poll(_deadstate=sys.maxint) >= 0: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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27 |
try: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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28 |
_active.remove(inst) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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29 |
except ValueError: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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# This can happen if two threads create a new Popen instance. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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# It's harmless that it was already removed, so ignore. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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32 |
pass |
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33 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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class Popen3: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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"""Class representing a child process. Normally, instances are created |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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internally by the functions popen2() and popen3().""" |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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37 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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sts = -1 # Child not completed yet |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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39 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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40 |
def __init__(self, cmd, capturestderr=False, bufsize=-1): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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41 |
"""The parameter 'cmd' is the shell command to execute in a |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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42 |
sub-process. On UNIX, 'cmd' may be a sequence, in which case arguments |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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will be passed directly to the program without shell intervention (as |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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with os.spawnv()). If 'cmd' is a string it will be passed to the shell |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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(as with os.system()). The 'capturestderr' flag, if true, specifies |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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46 |
that the object should capture standard error output of the child |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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47 |
process. The default is false. If the 'bufsize' parameter is |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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48 |
specified, it specifies the size of the I/O buffers to/from the child |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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process.""" |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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50 |
_cleanup() |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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51 |
self.cmd = cmd |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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52 |
p2cread, p2cwrite = os.pipe() |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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53 |
c2pread, c2pwrite = os.pipe() |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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54 |
if capturestderr: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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55 |
errout, errin = os.pipe() |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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56 |
self.pid = os.fork() |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
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57 |
if self.pid == 0: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
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58 |
# Child |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
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59 |
os.dup2(p2cread, 0) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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60 |
os.dup2(c2pwrite, 1) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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61 |
if capturestderr: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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62 |
os.dup2(errin, 2) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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63 |
self._run_child(cmd) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
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64 |
os.close(p2cread) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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65 |
self.tochild = os.fdopen(p2cwrite, 'w', bufsize) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
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66 |
os.close(c2pwrite) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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67 |
self.fromchild = os.fdopen(c2pread, 'r', bufsize) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
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68 |
if capturestderr: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
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69 |
os.close(errin) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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70 |
self.childerr = os.fdopen(errout, 'r', bufsize) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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71 |
else: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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72 |
self.childerr = None |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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73 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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74 |
def __del__(self): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
75 |
# In case the child hasn't been waited on, check if it's done. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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76 |
self.poll(_deadstate=sys.maxint) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
77 |
if self.sts < 0: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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78 |
if _active is not None: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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79 |
# Child is still running, keep us alive until we can wait on it. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
80 |
_active.append(self) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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81 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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82 |
def _run_child(self, cmd): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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83 |
if isinstance(cmd, basestring): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
84 |
cmd = ['/bin/sh', '-c', cmd] |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
85 |
os.closerange(3, MAXFD) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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86 |
try: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
87 |
os.execvp(cmd[0], cmd) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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88 |
finally: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
89 |
os._exit(1) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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90 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
91 |
def poll(self, _deadstate=None): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
92 |
"""Return the exit status of the child process if it has finished, |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
93 |
or -1 if it hasn't finished yet.""" |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
94 |
if self.sts < 0: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
95 |
try: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
96 |
pid, sts = os.waitpid(self.pid, os.WNOHANG) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
97 |
# pid will be 0 if self.pid hasn't terminated |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
98 |
if pid == self.pid: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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|
99 |
self.sts = sts |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
100 |
except os.error: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
101 |
if _deadstate is not None: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
102 |
self.sts = _deadstate |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
103 |
return self.sts |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
104 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
105 |
def wait(self): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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|
106 |
"""Wait for and return the exit status of the child process.""" |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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|
107 |
if self.sts < 0: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
108 |
pid, sts = os.waitpid(self.pid, 0) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
109 |
# This used to be a test, but it is believed to be |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
110 |
# always true, so I changed it to an assertion - mvl |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
111 |
assert pid == self.pid |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
112 |
self.sts = sts |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
113 |
return self.sts |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
114 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
115 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
116 |
class Popen4(Popen3): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
117 |
childerr = None |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
118 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
119 |
def __init__(self, cmd, bufsize=-1): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
120 |
_cleanup() |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
121 |
self.cmd = cmd |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
122 |
p2cread, p2cwrite = os.pipe() |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
123 |
c2pread, c2pwrite = os.pipe() |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
124 |
self.pid = os.fork() |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
125 |
if self.pid == 0: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
126 |
# Child |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
127 |
os.dup2(p2cread, 0) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
128 |
os.dup2(c2pwrite, 1) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
129 |
os.dup2(c2pwrite, 2) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
130 |
self._run_child(cmd) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
131 |
os.close(p2cread) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
132 |
self.tochild = os.fdopen(p2cwrite, 'w', bufsize) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
133 |
os.close(c2pwrite) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
134 |
self.fromchild = os.fdopen(c2pread, 'r', bufsize) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
135 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
136 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
137 |
if sys.platform[:3] == "win" or sys.platform == "os2emx": |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
138 |
# Some things don't make sense on non-Unix platforms. |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
139 |
del Popen3, Popen4 |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
140 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
141 |
def popen2(cmd, bufsize=-1, mode='t'): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
142 |
"""Execute the shell command 'cmd' in a sub-process. On UNIX, 'cmd' may |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
143 |
be a sequence, in which case arguments will be passed directly to the |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
144 |
program without shell intervention (as with os.spawnv()). If 'cmd' is a |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
145 |
string it will be passed to the shell (as with os.system()). If |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
146 |
'bufsize' is specified, it sets the buffer size for the I/O pipes. The |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
147 |
file objects (child_stdout, child_stdin) are returned.""" |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
148 |
w, r = os.popen2(cmd, mode, bufsize) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
149 |
return r, w |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
150 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
151 |
def popen3(cmd, bufsize=-1, mode='t'): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
152 |
"""Execute the shell command 'cmd' in a sub-process. On UNIX, 'cmd' may |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
153 |
be a sequence, in which case arguments will be passed directly to the |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
154 |
program without shell intervention (as with os.spawnv()). If 'cmd' is a |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
155 |
string it will be passed to the shell (as with os.system()). If |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
156 |
'bufsize' is specified, it sets the buffer size for the I/O pipes. The |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
157 |
file objects (child_stdout, child_stdin, child_stderr) are returned.""" |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
158 |
w, r, e = os.popen3(cmd, mode, bufsize) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
159 |
return r, w, e |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
160 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
161 |
def popen4(cmd, bufsize=-1, mode='t'): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
162 |
"""Execute the shell command 'cmd' in a sub-process. On UNIX, 'cmd' may |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
163 |
be a sequence, in which case arguments will be passed directly to the |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
164 |
program without shell intervention (as with os.spawnv()). If 'cmd' is a |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
165 |
string it will be passed to the shell (as with os.system()). If |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
166 |
'bufsize' is specified, it sets the buffer size for the I/O pipes. The |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
167 |
file objects (child_stdout_stderr, child_stdin) are returned.""" |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
168 |
w, r = os.popen4(cmd, mode, bufsize) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
169 |
return r, w |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
170 |
else: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
171 |
def popen2(cmd, bufsize=-1, mode='t'): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
172 |
"""Execute the shell command 'cmd' in a sub-process. On UNIX, 'cmd' may |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
173 |
be a sequence, in which case arguments will be passed directly to the |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
174 |
program without shell intervention (as with os.spawnv()). If 'cmd' is a |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
175 |
string it will be passed to the shell (as with os.system()). If |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
176 |
'bufsize' is specified, it sets the buffer size for the I/O pipes. The |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
177 |
file objects (child_stdout, child_stdin) are returned.""" |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
178 |
inst = Popen3(cmd, False, bufsize) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
179 |
return inst.fromchild, inst.tochild |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
180 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
181 |
def popen3(cmd, bufsize=-1, mode='t'): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
182 |
"""Execute the shell command 'cmd' in a sub-process. On UNIX, 'cmd' may |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
183 |
be a sequence, in which case arguments will be passed directly to the |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
184 |
program without shell intervention (as with os.spawnv()). If 'cmd' is a |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
185 |
string it will be passed to the shell (as with os.system()). If |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
186 |
'bufsize' is specified, it sets the buffer size for the I/O pipes. The |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
187 |
file objects (child_stdout, child_stdin, child_stderr) are returned.""" |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
188 |
inst = Popen3(cmd, True, bufsize) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
189 |
return inst.fromchild, inst.tochild, inst.childerr |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
190 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
191 |
def popen4(cmd, bufsize=-1, mode='t'): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
192 |
"""Execute the shell command 'cmd' in a sub-process. On UNIX, 'cmd' may |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
193 |
be a sequence, in which case arguments will be passed directly to the |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
194 |
program without shell intervention (as with os.spawnv()). If 'cmd' is a |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
195 |
string it will be passed to the shell (as with os.system()). If |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
196 |
'bufsize' is specified, it sets the buffer size for the I/O pipes. The |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
197 |
file objects (child_stdout_stderr, child_stdin) are returned.""" |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
198 |
inst = Popen4(cmd, bufsize) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
199 |
return inst.fromchild, inst.tochild |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
200 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
201 |
__all__.extend(["Popen3", "Popen4"]) |