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From: Lars Schneider <larsxschneider@gmail.com>
To: Jeff King <peff@peff.net>
Cc: git@vger.kernel.org, gitster@pobox.com, jnareb@gmail.com,
	mlbright@gmail.com, e@80x24.org, Johannes.Schindelin@gmx.de,
	ben@wijen.net
Subject: Re: [PATCH v5 05/15] pkt-line: add packet_write_gently_fmt()
Date: Wed, 10 Aug 2016 16:10:02 +0200	[thread overview]
Message-ID: <E6D0E830-764D-42E5-9F69-340F718B98B2@gmail.com> (raw)
In-Reply-To: <20160810134346.6nmf2sudwh56nq76@sigill.intra.peff.net>


> On 10 Aug 2016, at 15:43, Jeff King <peff@peff.net> wrote:
> 
> On Wed, Aug 10, 2016 at 03:04:01PM +0200, larsxschneider@gmail.com wrote:
> 
>> +int packet_write_gently_fmt(int fd, const char *fmt, ...)
>> +{
>> +	static struct strbuf buf = STRBUF_INIT;
>> +	va_list args;
>> +
>> +	strbuf_reset(&buf);
>> +	va_start(args, fmt);
>> +	format_packet(1, &buf, fmt, args);
>> +	va_end(args);
>> +	packet_trace(buf.buf + 4, buf.len - 4, 1);
>> +	return (write_in_full(fd, buf.buf, buf.len) == buf.len ? 0 : -1);
>> +}
> 
> Could the end of this function just be:
> 
>  return packet_write_gently(fd, buf.buf, buf.len);
> 
> ? I guess we'd prefer to avoid that, because it incurs an extra
> memmove() of the data.

I don't think the memmove would be that expensive. However, format_packet()
already creates the packet_header and packet_write_gently would do the same
again, no?


> Similarly, I'd think this could share code with the non-gentle form
> (which should be able to just call this and die() if returns an error).
> Though sometimes the va_list transformation makes that awkward.

Yeah, the code duplication annoyed me, too. va_list was the reason I did it
that way. Do you think that is something that needs to be addressed in the
series?

Thanks,
Lars

  reply	other threads:[~2016-08-10 23:16 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20160803164225.46355-1-larsxschneider@gmail.com/>
2016-08-10 13:03 ` [PATCH v5 00/15] Git filter protocol larsxschneider
2016-08-10 13:03   ` [PATCH v5 01/15] pkt-line: extract set_packet_header() larsxschneider
2016-08-10 13:03   ` [PATCH v5 02/15] pkt-line: call packet_trace() only if a packet is actually send larsxschneider
2016-08-10 13:13     ` Jeff King
2016-08-10 13:24       ` Lars Schneider
2016-08-10 13:30         ` Jeff King
2016-08-10 13:51           ` Lars Schneider
2016-08-10 14:33             ` Jeff King
2016-08-10 13:03   ` [PATCH v5 03/15] pkt-line: add `gentle` parameter to format_packet() larsxschneider
2016-08-10 13:15     ` Jeff King
2016-08-10 13:29       ` Lars Schneider
2016-08-10 13:37         ` Jeff King
2016-08-10 13:59           ` Lars Schneider
2016-08-10 14:34             ` Jeff King
2016-08-10 13:04   ` [PATCH v5 04/15] pkt-line: add packet_write_gently() larsxschneider
2016-08-10 13:28     ` Jeff King
2016-08-10 13:36       ` Lars Schneider
2016-08-10 13:40         ` Jeff King
2016-08-10 17:17           ` Junio C Hamano
2016-08-10 17:49             ` Lars Schneider
2016-08-10 18:21               ` Junio C Hamano
2016-08-10 19:15                 ` Lars Schneider
2016-08-10 13:04   ` [PATCH v5 05/15] pkt-line: add packet_write_gently_fmt() larsxschneider
2016-08-10 13:43     ` Jeff King
2016-08-10 14:10       ` Lars Schneider [this message]
2016-08-10 15:01         ` Jeff King
2016-08-10 17:18       ` Junio C Hamano
2016-08-10 17:53         ` Lars Schneider
2016-08-10 18:42           ` Junio C Hamano
2016-08-10 13:04   ` [PATCH v5 06/15] pkt-line: add packet_flush_gently() larsxschneider
2016-08-10 13:04   ` [PATCH v5 07/15] pkt-line: add functions to read/write flush terminated packet streams larsxschneider
2016-08-10 13:04   ` [PATCH v5 08/15] pkt-line: rename packet_write() to packet_write_fmt() larsxschneider
2016-08-10 13:04   ` [PATCH v5 09/15] pack-protocol: fix maximum pkt-line size larsxschneider
2016-08-10 13:04   ` [PATCH v5 10/15] convert: quote filter names in error messages larsxschneider
2016-08-10 13:04   ` [PATCH v5 11/15] convert: modernize tests larsxschneider
2016-08-10 13:04   ` [PATCH v5 12/15] convert: generate large test files only once larsxschneider
2016-08-10 13:04   ` [PATCH v5 13/15] convert: make apply_filter() adhere to standard Git error handling larsxschneider
2016-08-10 13:04   ` [PATCH v5 14/15] convert: add filter.<driver>.process option larsxschneider
2016-08-12 16:33     ` Stefan Beller
2016-08-12 16:38       ` Jeff King
2016-08-12 16:48         ` Stefan Beller
2016-08-12 17:08           ` Lars Schneider
2016-08-12 17:13             ` Junio C Hamano
2016-08-12 17:21               ` Lars Schneider
2016-08-12 18:03                 ` Junio C Hamano
2016-08-12 16:59       ` Lars Schneider
2016-08-12 17:07         ` Stefan Beller
2016-08-12 17:14           ` Lars Schneider
2016-08-10 13:04   ` [PATCH v5 15/15] read-cache: make sure file handles are not inherited by child processes larsxschneider
2016-08-18 14:23     ` Johannes Schindelin

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