Re: [PyQt] [Errno 4] Interrupted system call
Aha, so Ubuntu's version _is_ patched :) Arve On 5/28/07, Ismail Dönmez <[EMAIL PROTECTED]> wrote: On Monday 28 May 2007 18:54:47 Jeremy Moskovich wrote: > Hi, > I'm having consistent problems using the python subprocess module in > PyQT applications. > > os.read() & os.wait() calls seem to be interrupted intermittently, in a > manner similar to the following stack trace: > > File "/homes/jeremym/programs/python2.5/lib/python2.5/subprocess.py", > line 593, in __init__ > errread, errwrite) > File "/homes/jeremym/programs/python2.5/lib/python2.5/subprocess.py", > line 1046, in _execute_child > data = os.read(errpipe_read, 1048576) # Exceptions limited to 1 MB > OSError: [Errno 4] Interrupted system call > > The only mention I could find about this online is at: > http://mail.python.org/pipermail/python-list/2007-February/427031.html > which just recommends retrying the operation. > > Does anyone know what the root of this problem is? How can it be solved > effectively You might want to try the following patch http://librarian.launchpad.net/6820347/subprocess-eintr-safety.patch . The bug report is @ http://sourceforge.net/tracker/index.php?func=detail&aid=1068268&group_id=5470&atid=105470 /ismail -- Perfect is the enemy of good ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] [Errno 4] Interrupted system call
On Monday 28 May 2007 18:54:47 Jeremy Moskovich wrote: > Hi, > I'm having consistent problems using the python subprocess module in > PyQT applications. > > os.read() & os.wait() calls seem to be interrupted intermittently, in a > manner similar to the following stack trace: > > File "/homes/jeremym/programs/python2.5/lib/python2.5/subprocess.py", > line 593, in __init__ > errread, errwrite) > File "/homes/jeremym/programs/python2.5/lib/python2.5/subprocess.py", > line 1046, in _execute_child > data = os.read(errpipe_read, 1048576) # Exceptions limited to 1 MB > OSError: [Errno 4] Interrupted system call > > The only mention I could find about this online is at: > http://mail.python.org/pipermail/python-list/2007-February/427031.html > which just recommends retrying the operation. > > Does anyone know what the root of this problem is? How can it be solved > effectively You might want to try the following patch http://librarian.launchpad.net/6820347/subprocess-eintr-safety.patch . The bug report is @ http://sourceforge.net/tracker/index.php?func=detail&aid=1068268&group_id=5470&atid=105470 /ismail -- Perfect is the enemy of good signature.asc Description: This is a digitally signed message part. ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] [Errno 4] Interrupted system call
Hi Jeremy On 5/28/07, Jeremy Moskovich <[EMAIL PROTECTED]> wrote: Hi, I'm having consistent problems using the python subprocess module in PyQT applications. os.read() & os.wait() calls seem to be interrupted intermittently, in a manner similar to the following stack trace: File "/homes/jeremym/programs/python2.5/lib/python2.5/subprocess.py", line 593, in __init__ errread, errwrite) File "/homes/jeremym/programs/python2.5/lib/python2.5/subprocess.py", line 1046, in _execute_child data = os.read(errpipe_read, 1048576) # Exceptions limited to 1 MB OSError: [Errno 4] Interrupted system call The only mention I could find about this online is at: http://mail.python.org/pipermail/python-list/2007-February/427031.html which just recommends retrying the operation. I've never experienced an interruption during the construction of a Popen object, which seems to be the case here. Calls to Popen.wait, on the other hand, did get interrupted all the time on OS X (no idea why), so I had to catch EINTR and retry. Are you using the very latest Python though? I have version 2.5.1 on Ubuntu, and from browsing subprocess.py I see that os.read is now wrapped, so that the operation is always retried upon EINTR. Hope this helps, Arve ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
