From: Jeff King <peff@peff.net>
To: git@vger.kernel.org
Cc: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Subject: Re: [RFC/PATCH] pipe_command(): mark stdin descriptor as non-blocking
Date: Tue, 2 Aug 2022 11:39:57 -0400 [thread overview]
Message-ID: <YulFTSTbVaTwuQtt@coredump.intra.peff.net> (raw)
In-Reply-To: <YuikU//9OrdpKQcE@coredump.intra.peff.net>
On Tue, Aug 02, 2022 at 12:13:07AM -0400, Jeff King wrote:
> - more importantly, I'm not sure of the portability implications of
> the fix. This is our first use of O_NONBLOCK outside of the
> compat/simple-ipc unix-socket code. Do we need to abstract this
> behind a compat/ layer for Windows?
So I think the answer is pretty clearly "yes", from the Windows CI
results:
run-command.c:1429:18: 'O_NONBLOCK' undeclared (first use in this function)
flags |= O_NONBLOCK;
^~~~~~~~~~
It looks like we'd have the option of either adding F_GETFL/F_SETFL
support to compat/mingw.c's fake fcntl() function, or adding a
compat/nonblock.c that abstracts the whole thing. I'd prefer the latter,
as it makes the interface a bit narrower.
But I'm not sure what should go on the Windows side of that #ifdef.
Unlike some other spots, I don't think we can just make it a noop, or
Windows will be subject to the same deadlock (unless for some reason its
write() does behave differently?).
-Peff
next prev parent reply other threads:[~2022-08-02 15:40 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-02 4:13 [RFC/PATCH] pipe_command(): mark stdin descriptor as non-blocking Jeff King
2022-08-02 15:04 ` Junio C Hamano
2022-08-02 15:39 ` Jeff King [this message]
2022-08-02 16:16 ` Junio C Hamano
2022-08-03 3:53 ` [PATCH v2] " Jeff King
2022-08-03 16:45 ` René Scharfe
2022-08-03 17:20 ` Jeff King
2022-08-03 21:56 ` René Scharfe
2022-08-05 15:36 ` Jeff King
2022-08-05 21:13 ` René Scharfe
2022-08-07 10:15 ` René Scharfe
2022-08-07 17:41 ` Jeff King
2022-08-10 5:39 ` René Scharfe
2022-08-10 19:53 ` Jeff King
2022-08-10 22:35 ` René Scharfe
2022-08-11 8:52 ` Jeff King
2022-08-10 5:39 ` [PATCH] mingw: handle writes to non-blocking pipe René Scharfe
2022-08-10 9:07 ` Johannes Schindelin
2022-08-10 20:02 ` Jeff King
2022-08-10 22:34 ` René Scharfe
2022-08-11 8:47 ` Jeff King
2022-08-11 17:35 ` René Scharfe
2022-08-11 18:20 ` Jeff King
2022-08-14 15:37 ` René Scharfe
2022-08-17 5:39 ` Jeff King
2022-08-17 6:04 ` [PATCH v2 0/6] fix pipe_command() deadlock Jeff King
2022-08-17 6:04 ` [PATCH v2 1/6] compat: add function to enable nonblocking pipes Jeff King
2022-08-17 20:23 ` Junio C Hamano
2022-08-18 5:41 ` Jeff King
2022-08-17 6:05 ` [PATCH v2 2/6] nonblock: support Windows Jeff King
2022-08-17 6:06 ` [PATCH v2 3/6] git-compat-util: make MAX_IO_SIZE define globally available Jeff King
2022-08-17 6:08 ` [PATCH v2 4/6] pipe_command(): avoid xwrite() for writing to pipe Jeff King
2022-08-17 6:09 ` [PATCH v2 5/6] pipe_command(): handle ENOSPC when writing to a pipe Jeff King
2022-08-17 18:57 ` Junio C Hamano
2022-08-18 5:38 ` Jeff King
2022-08-17 6:10 ` [PATCH v2 6/6] pipe_command(): mark stdin descriptor as non-blocking Jeff King
2022-08-17 6:20 ` [PATCH v2 0/6] fix pipe_command() deadlock Jeff King
2022-08-19 21:19 ` René Scharfe
2022-08-20 7:04 ` Jeff King
2022-08-07 10:14 ` [PATCH v2] pipe_command(): mark stdin descriptor as non-blocking René Scharfe
2022-08-08 12:55 ` Johannes Schindelin
2022-08-08 12:59 ` Johannes Schindelin
2022-08-09 13:04 ` Jeff King
2022-08-09 22:10 ` Johannes Schindelin
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