Deadlock of the process tree when running make

[Takashi Yano]

On Sat, 09 Apr 2022 20:23:06 +0300
Alexey Izbyshev wrote:
> On 2022-04-09 19:57, Takashi Yano wrote:
> > Thank you very much for the information. Can you check if
> > the thread pty_master_fwd_thread() in root mintty is still
> > alive?
> 
> I don't have mintty because "make" is run via an SSH session. I suppose 
> I should look into sshd in this case? I've checked an sshd process that 
> is the parent of this session, and yes, one of its threads is blocked at 
> https://cygwin.com/git?p=newlib-cygwin.git;a=blob;f=winsup/cygwin/fhandler_tty.cc;h=7bef6958c106c5e78cc90e014081022fd3a205bc;hb=cygwin-3_3_4-release#l2710.

Thanks for checking. This seems to be normal. Then, I cannot
understand why the ClosePseudoConsole() call is blocked...

The document by Microsoft mentions the blocking conditions of
ClosePseudoConsole():
https://docs.microsoft.com/en-us/windows/console/closepseudoconsole
however, the thread above is draining the channel.

-- 
Takashi Yano <takashi.yano@nifty.ne.jp>