[vbox-dev] VbglR3GuestPropWait() not working well after hibernation

Huihong Luo huisinro at yahoo.com
Wed May 6 09:10:03 PDT 2009

I mean saving the guest vm states.
You can test it easily on windows XP guest. (I use Vista/Windows 7 host).
(1) on guest: vboxcontrol guestproperty wait myprop
then close vm saving state
start vm, and 
(2) on host: vboxmanage guestproperty set myprop 123
You will note that vm waiting process never returns.
- Huihong

--- On Wed, 5/6/09, Michael Thayer <Michael.Thayer at Sun.COM> wrote:

From: Michael Thayer <Michael.Thayer at Sun.COM>
Subject: Re: [vbox-dev] VbglR3GuestPropWait() not working well after hibernation
To: "Huihong Luo" <huisinro at yahoo.com>
Cc: vbox-dev at virtualbox.org
Date: Wednesday, May 6, 2009, 3:27 AM

Hello Huihong,

Huihong Luo wrote:
> I am developing an addin inside windows XP guest, the addin uses VbglR3GuestPropWait() to wait for some property to arrive from host.
> If the vm is hibernated, it does not seem to alway work. I did try to reconnect every time before the wait, but still no luck.
> When vm is hibernated, my process waiting for the property is also hibernated. Is there any thing special to be done?
> If I kill the process, and re-launch it, then works well again.
Does hibernation mean ACPI hibernation here or saving the guest's state?


Sun Microsystems GmbH        Michael Thayer
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