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From: Paolo Bonzini <pbonzini@redhat.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Sasha Levin <levinsasha928@gmail.com>,
	penberg@kernel.org, john@jfloren.net, kvm@vger.kernel.org,
	asias.hejun@gmail.com, gorcunov@gmail.com,
	prasadjoshi124@gmail.com
Subject: Re: [PATCH 5/5 V2] kvm tools: Initialize and use VESA and VNC
Date: Wed, 25 May 2011 17:37:50 +0200	[thread overview]
Message-ID: <4DDD224E.8070608@redhat.com> (raw)
In-Reply-To: <20110525125335.GD29300@elte.hu>

On 05/25/2011 02:53 PM, Ingo Molnar wrote:
> Obviously the compiler did not provide this feature into a vacuum, it
> expected the C library to execute constructors, right?
>
> So the above dodges my question of why there is no method (in glibc)
> to turn auto-execution off and let the app do it.

Well, I wasn't there. :)

I suppose they simply chose those semantics for C++ constructors which 
were easiest to implement (i.e. execute before main).  ((constructor)) 
then followed suit.

Any further extension in the direction you suggest would have to be 
designed very carefully in order to coexist with C++ constructors, or it 
would have to be something completely separate... in the latter case, 
((constructor)) already provides the ingredients to do this, even if at 
a small cost in efficiency.  So there is no big incentive to add this 
further extension to the compiler and/or the C library.

Paolo

  reply	other threads:[~2011-05-25 15:38 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-23 11:19 [PATCH 1/5 V2] kvm tools: Add BIOS INT10 handler Sasha Levin
2011-05-23 11:19 ` [PATCH 2/5 V2] kvm tools: Add video mode to kernel initialization Sasha Levin
2011-05-23 11:30   ` Ingo Molnar
2011-05-23 11:19 ` [PATCH 3/5 V2] kvm tools: Add VESA device Sasha Levin
2011-05-23 11:32   ` Ingo Molnar
2011-05-23 11:19 ` [PATCH 4/5 V2] kvm tools: Update makefile and feature tests Sasha Levin
2011-05-23 11:19 ` [PATCH 5/5 V2] kvm tools: Initialize and use VESA and VNC Sasha Levin
2011-05-23 11:38   ` Ingo Molnar
2011-05-23 11:45     ` Pekka Enberg
2011-05-24  8:37     ` Paolo Bonzini
2011-05-24  8:50       ` Ingo Molnar
2011-05-24  9:10         ` Paolo Bonzini
2011-05-24  9:55           ` Pekka Enberg
2011-05-24 11:22             ` Avi Kivity
2011-05-24 11:26               ` Pekka Enberg
2011-05-24 11:30                 ` Sasha Levin
2011-05-24 11:30                 ` Avi Kivity
2011-05-24 11:38                   ` Pekka Enberg
2011-05-24 11:41                     ` Avi Kivity
2011-05-24 11:56                       ` Pekka Enberg
2011-05-24 12:27                         ` Paolo Bonzini
2011-05-24 14:38                           ` Avi Kivity
2011-05-24 14:37                       ` Avi Kivity
2011-05-24 14:54                         ` Pekka Enberg
2011-05-24 19:03                           ` Ingo Molnar
2011-05-24 19:00                     ` Ingo Molnar
2011-05-24 19:16           ` Ingo Molnar
2011-05-24  9:18         ` Paolo Bonzini
2011-05-24 19:40           ` Ingo Molnar
2011-05-25  8:21             ` Paolo Bonzini
2011-05-25  8:32               ` Ingo Molnar
2011-05-25  9:15                 ` Paolo Bonzini
2011-05-25  9:36                   ` Ingo Molnar
2011-05-25 10:01                     ` Paolo Bonzini
2011-05-25 10:17                       ` Ingo Molnar
2011-05-25 10:44                         ` Paolo Bonzini
2011-05-25 12:53                           ` Ingo Molnar
2011-05-25 15:37                             ` Paolo Bonzini [this message]
2011-05-25  9:49                   ` Ingo Molnar
2011-05-25  8:38               ` Ingo Molnar
2011-05-24  8:51       ` Cyrill Gorcunov
2011-05-23 14:10   ` Pekka Enberg
2011-05-23 11:29 ` [PATCH 1/5 V2] kvm tools: Add BIOS INT10 handler Ingo Molnar

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