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From: Joel Brobecker <brobecker@adacore.com>
To: Tom Tromey <tromey@redhat.com>
Cc: Ulrich Weigand <uweigand@de.ibm.com>, gdb-patches@sourceware.org
Subject: Re: [RFC/RFA] add struct parse_context to all command functions
Date: Sun, 26 Oct 2008 15:19:00 -0000	[thread overview]
Message-ID: <20081026151831.GA3617@adacore.com> (raw)
In-Reply-To: <m3r664sjxy.fsf@fleche.redhat.com>

> Joel> I like the idea as well. Just one question: Why did you elect to
> Joel> pass the structure as a pointer, rather than the structure
> Joel> itself?
> 
> To avoid copying.  Most users just reference fields from the
> structure, or pass it through unmodified.  So, this is more efficient
> in the common cases.

Ah, yes, of course. I was just confused with the pass-by-reference at
the ABI level. I think the same reasons apply to struct parse_context,
so I'll adjust my approach accordingly - even if the structure is small
right now (3 words for now), it's still bigger than 1 address...

-- 
Joel


  reply	other threads:[~2008-10-26 15:19 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-09 14:05 Joel Brobecker
2008-10-09 16:13 ` Tom Tromey
2008-10-09 22:20   ` Joel Brobecker
2008-10-20 16:16 ` Joel Brobecker
2008-10-20 19:03   ` Thiago Jung Bauermann
2008-10-21  0:47     ` Daniel Jacobowitz
2008-10-21 18:06       ` Ulrich Weigand
2008-10-21 18:18         ` Daniel Jacobowitz
2008-10-22  1:40           ` Joel Brobecker
2008-10-22 20:15             ` Tom Tromey
2008-10-22 20:36               ` Joel Brobecker
2008-10-21  1:22   ` Tom Tromey
2008-10-21  7:07     ` Joel Brobecker
2008-10-21 18:12     ` Ulrich Weigand
2008-10-21 18:58       ` Tom Tromey
2008-10-21 19:33       ` Tom Tromey
2008-10-22 18:03         ` Ulrich Weigand
2008-10-22 18:54           ` Tom Tromey
2008-10-22 22:24             ` Ulrich Weigand
2008-10-23  1:02               ` Tom Tromey
2008-10-23 19:50                 ` Ulrich Weigand
2008-10-23 21:29                   ` Tom Tromey
2008-10-24 13:01                     ` Ulrich Weigand
2008-10-25 16:05                       ` Tom Tromey
2008-10-27 17:07                       ` Tom Tromey
2008-10-28 16:27                         ` Ulrich Weigand
2008-10-28 18:17                           ` Tom Tromey
2008-10-28 20:00                             ` Ulrich Weigand
2008-10-25 16:25                     ` Joel Brobecker
2008-10-25 16:46                       ` Tom Tromey
2008-10-26 15:19                         ` Joel Brobecker [this message]
2008-10-21 18:05 ` Ulrich Weigand

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