Bugs item #933670, was opened at 2004-04-12 10:21 Message generated for change (Comment added) made by dmeranda You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=933670&group_id=5470
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Library Group: Python 2.3 Status: Open Resolution: None Priority: 5 Private: No Submitted By: Scott Lowrey (slowrey) Assigned to: Nobody/Anonymous (nobody) Summary: pty.fork() leaves slave fd's open on Solaris Initial Comment: On a Solaris 2.8 system, slave file descriptors are left open after the child process is gone and the master has been closed. The pty.fork() function attempts to use os.forkpty() first. When that fails (apparently the os module does not provide forkpty() on Solaris?), it uses openpty() and os.fork(). openpty() returns master and slave file descriptors. Since pty.fork() only returns the master_fd, it is not clear to me how the slave would ever be closed since the caller doesn't have access to it. Perhaps pty.fork is supposed to take care of this? I am using pexpect to control my pty's, so I don't have much expertise in this area other than what I've gleaned from the code. At any rate, on a long running process used to test other programs, the open file descriptors pile up until the ulimit is reached. I've worked around this by modifying pexpect.close() to use os.close(self.child_fd + 1). A hack, I'm sure... :) ---------------------------------------------------------------------- Comment By: Deron Meranda (dmeranda) Date: 2007-01-31 16:00 Message: Logged In: YES user_id=847188 Originator: NO I am seeing the exact same problem under HP-UX 11.0 (python 2.5). Slave descriptors are leaked. This is a problem with Python's pty.fork(), not with pexpect. ---------------------------------------------------------------------- Comment By: HyunKook Kim (k5r2a) Date: 2004-08-27 04:07 Message: Logged In: YES user_id=604333 Thank you very much for your comments My Case is same to yours. -platform : Solaris 5.8 -Python : 2.3.3 -pyexpect: 0.99 ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=933670&group_id=5470 _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
