Chad Miller <pyt...@chad.org> added the comment:
File
"/home/cmiller/work/cabzr/desktopcouch/getport-at-call-time/desktopcouch/start_local_couchdb.py",
line 93, in run_couchdb
retcode = subprocess.call(local_exec)
File "/usr/lib/python2.6/subprocess.py", line 444, in call
return Popen(*popenargs, **kwargs).wait()
File "/usr/lib/python2.6/subprocess.py", line 1123, in wait
pid, sts = os.waitpid(self.pid, 0)
exceptions.OSError: [Errno 4] Interrupted system call
Now what? The process started, but I have no way of knowing when it
finishes or the exit value when it does, because I don't have access to
the Popen object. Nor can I even kill it and try again, because I can't
get he process id.
try/except in my code can never help. It must be put in the stdlib.
Or, if this is too egregious, then the docs should scream that
subprocess.call can never safely be used, and users should avoid it.
File
"/home/cmiller/work/cabzr/desktopcouch/getport-at-call-time/desktopcouch/start_local_couchdb.py",
line 93, in run_couchdb
retcode = subprocess.call(local_exec)
File "/usr/lib/python2.6/subprocess.py", line 444, in call
return Popen(*popenargs, **kwargs).wait()
File "/usr/lib/python2.6/subprocess.py", line 595, in __init__
errread, errwrite)
File "/usr/lib/python2.6/subprocess.py", line 1084, in _execute_child
data = os.read(errpipe_read, 1048576) # Exceptions limited to 1 MB
exceptions.OSError: [Errno 4] Interrupted system call
This os.read is a byproduct of something the Popen.__init__
implementation must do, and it is safe for it to continue to get the
information it needs, without the user's knowledge.
The process is started, then this is aborted before the Popen.stdout and
.stderr are set up, leaving the object in a weird state.
----------
nosy: +cmiller
Added file: http://bugs.python.org/file14700/trunk-diff-unified.txt
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<http://bugs.python.org/issue1068268>
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