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From: Qian Hong <fracting@gmail.com>
To: cygwin <cygwin@cygwin.com>
Subject: Re: Randomly hang when compiling Cygwin on Cygwin on Wine
Date: Sun, 01 Nov 2015 19:09:00 -0000	[thread overview]
Message-ID: <CALd+sZTRVMuLjwZMjxN6f6JvTtax5rJAUuk_SMXvcQzMzxhirA@mail.gmail.com> (raw)
In-Reply-To: <CALd+sZS-EbkUMgmRCyJUK0LCMo6zydzB1rbM9iZFrAcnbfHCRQ@mail.gmail.com>

Update:

I have another case of hang:

?(1)-+-bash(1419290)
     |-bash(1419318)---make(1423770)---sh(1423783)---sh(1423838)
     |-mintty(1249269)---bash(1249277)
     |-mintty(47)---bash(55)---bash(1132827)---make(1139169)---sh(1139182)---make(1139234)---sh(1206695)---sh(1206721)---make(1206764)---sh(1206770)---make(1206783)---perl(1249042)
     |-mintty(596773)---bash(596790)---pstree(1423865)
     `-mintty(1417449)---bash(1417457)


$ ps aux | grep 1249042
  1249042 1206783 1132827    1249050  pty0      197608   Oct 31 /usr/bin/perl
  1249077 1249042 1132827    1249092  pty0      197608   Oct 31
/usr/bin/nm <defunct>



Here the process perl(1249042) is waiting for a pipe, while its child
process nm(1249077) is in the status "defunct". nm(1249077) appears in
output of `ps aux`, but doesn't appear in output of `pstree -p -l`.

Is there any case, where a child process can exit unexpected, but the
parent process still incorrectly wait for the child process forever?

Thanks!

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  reply	other threads:[~2015-11-01 19:09 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-28 13:28 Qian Hong
2015-11-01 19:09 ` Qian Hong [this message]
2015-11-02 14:30   ` Corinna Vinschen
2016-03-15 14:10     ` Qian Hong

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