From: Ken Brown <kbrown@cornell.edu>
To: cygwin-developers@cygwin.com
Subject: Re: cygwin 3.3.x: another problem that may be related to pipes
Date: Mon, 15 Nov 2021 10:36:19 -0500 [thread overview]
Message-ID: <75dcaf48-49d6-a032-9467-145480a3c4a6@cornell.edu> (raw)
In-Reply-To: <c66cf825-b010-33a4-c215-162c402ec0da@cornell.edu>
On 11/15/2021 10:27 AM, Ken Brown wrote:
> On 11/15/2021 10:11 AM, Takashi Yano wrote:
>> I might be wrong. Your code certainly waits for something happening.
>> I am not sure why it works...
>
> FWIW, I got the idea for this from the following code in
> fhandler_socket_unix::listen_pipe:
>
> io.Status = STATUS_PENDING;
> if (!is_nonblocking () && !(evt = create_event ()))
> return -1;
> status = NtFsControlFile (get_handle (), evt, NULL, NULL, &io,
> FSCTL_PIPE_LISTEN, NULL, 0, NULL, 0);
> if (status == STATUS_PENDING)
> {
> waitret = cygwait (evt ?: get_handle (), cw_infinite,
> cw_cancel | cw_sig_eintr);
> if (waitret == WAIT_OBJECT_0)
> status = io.Status;
> }
And here's Corinna's answer when I asked her to explain it:
https://cygwin.com/pipermail/cygwin-developers/2021-April/012093.html
Ken
next prev parent reply other threads:[~2021-11-15 15:36 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <115203324.649908.1636923059546.ref@mail.yahoo.com>
[not found] ` <115203324.649908.1636923059546@mail.yahoo.com>
[not found] ` <20211115171811.844dce9cce2b4d13262d64f2@nifty.ne.jp>
2021-11-15 13:01 ` Corinna Vinschen
2021-11-15 13:57 ` Ken Brown
2021-11-15 14:36 ` Takashi Yano
2021-11-15 15:11 ` Takashi Yano
2021-11-15 15:27 ` Ken Brown
2021-11-15 15:36 ` Ken Brown [this message]
2021-11-15 16:45 ` Takashi Yano
2021-11-15 16:25 ` Corinna Vinschen
2021-11-15 14:50 ` Takashi Yano
2021-11-15 16:08 ` Corinna Vinschen
2021-11-15 16:37 ` Ken Brown
2021-11-15 16:52 ` Takashi Yano
2021-11-15 18:47 ` Ken Brown
2021-11-15 23:35 ` Takashi Yano
2021-11-15 23:49 ` Ken Brown
2021-11-16 3:28 ` Takashi Yano
2021-11-16 9:28 ` Corinna Vinschen
2021-11-16 9:45 ` Takashi Yano
2021-11-16 10:20 ` Takashi Yano
2021-11-16 14:35 ` Takashi Yano
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