From: Stefan Beller <sbeller@google.com>
To: Jeff King <peff@peff.net>
Cc: "git@vger.kernel.org" <git@vger.kernel.org>
Subject: Re: [PATCH 12/12] receive-pack: send keepalives during quiet periods
Date: Mon, 18 Jul 2016 22:28:25 -0700 [thread overview]
Message-ID: <CAGZ79kZPbSTAv6zjJ01PdqBOZrsfhRAte_v-mbBzXuOAWNK+Tg@mail.gmail.com> (raw)
In-Reply-To: <20160716075621.GA10275@sigill.intra.peff.net>
On Sat, Jul 16, 2016 at 12:56 AM, Jeff King <peff@peff.net> wrote:
>> > + if (use_keepalive == KEEPALIVE_AFTER_NUL && !keepalive_active) {
>> > + const char *p = memchr(data, '\0', sz);
>> > + if (p) {
>> > + /*
>> > + * The NUL tells us to start sending keepalives. Make
>> > + * sure we send any other data we read along
>> > + * with it.
>> > + */
>> > + keepalive_active = 1;
>> > + send_sideband(1, 2, data, p - data, use_sideband);
>> > + send_sideband(1, 2, p + 1, sz - (p - data + 1), use_sideband);
>> > + continue;
>>
>> Oh, I see why the turn_on_keepalive_on_NUL doesn't work as well as I thought.
>> I wonder if we can use a better read function, that would stop reading at a NUL,
>> and return early instead?
>
> How would you do that, if not by read()ing a byte at a time (which is
> inefficient)? Otherwise you have to deal with the leftovers (after the
> NUL) in your buffer. It's one of the reasons I went with a single-byte
> signal, because otherwise it gets rather complicated to do robustly.
I do not question the concept of a single NUL byte, but rather the
implementation,
i.e. if we had an xread_until_nul you would not need to have a double
send_sideband
here?
>
> -Peff
next prev parent reply other threads:[~2016-07-19 5:28 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-15 10:25 [PATCH 0/12] push progress reporting and keepalives Jeff King
2016-07-15 10:26 ` [PATCH 01/12] check_everything_connected: always pass --quiet to rev-list Jeff King
2016-07-15 10:28 ` [PATCH 02/12] rev-list: add optional progress reporting Jeff King
2016-07-15 18:00 ` Junio C Hamano
2016-07-16 1:23 ` Jeff King
2016-07-15 10:28 ` [PATCH 03/12] check_everything_connected: convert to argv_array Jeff King
2016-07-15 10:30 ` [PATCH 04/12] check_everything_connected: use a struct with named options Jeff King
2016-07-15 18:13 ` Junio C Hamano
2016-07-16 1:24 ` Jeff King
2016-07-15 10:32 ` [PATCH 05/12] check_connected: relay errors to alternate descriptor Jeff King
2016-07-15 18:19 ` Junio C Hamano
2016-07-16 1:27 ` Jeff King
2016-07-15 10:32 ` [PATCH 06/12] check_connected: add progress flag Jeff King
2016-07-15 10:33 ` [PATCH 07/12] clone: use a real progress meter for connectivity check Jeff King
2016-07-15 10:34 ` [PATCH 08/12] index-pack: add flag for showing delta-resolution progress Jeff King
2016-07-15 10:35 ` [PATCH 09/12] receive-pack: turn on index-pack resolving progress Jeff King
2016-07-15 10:36 ` [PATCH 10/12] receive-pack: relay connectivity errors to sideband Jeff King
2016-07-15 10:36 ` [PATCH 11/12] receive-pack: turn on connectivity progress Jeff King
2016-07-15 10:43 ` [PATCH 12/12] receive-pack: send keepalives during quiet periods Jeff King
2016-07-15 17:24 ` Stefan Beller
2016-07-16 7:56 ` Jeff King
2016-07-19 5:28 ` Stefan Beller [this message]
2016-07-19 10:07 ` Jeff King
2016-07-19 16:05 ` Stefan Beller
2016-07-20 13:28 ` Jeff King
2016-07-15 19:18 ` Junio C Hamano
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