Re: [ros-dev] [ros-diffs] [cfinck] 39353: Gabriel Ilardi ([e-mail]) - Allow only one instance of Task-Manager to be run at the same time See issue #3976 for more details.

[Alex Ionescu]

This won't be compatible with Windows applications.

On 3-Feb-09, at 5:25 PM, cfinck(a)svn.reactos.org wrote:

>   Author: cfinck
>  Date: Tue Feb  3 16:25:39 2009
>  New Revision: 39353
>
>  URL: http://svn.reactos.org/svn/reactos?rev=39353&view=rev
>  Log:
>  Gabriel Ilardi (gabrielilardi(a)hotmail.it)
>  - Allow only one instance of Task-Manager to be run at the same time
>
>  See issue #3976 for more details.
>
>  Modified:
>     trunk/reactos/base/applications/taskmgr/taskmgr.c
>
>  Modified: trunk/reactos/base/applications/taskmgr/taskmgr.c
>  URL:
> http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/taskmgr/…
>  =
>  =
>  =
>  =
>  =
>  =
>  =
>  =
>  ======================================================================
>  --- trunk/reactos/base/applications/taskmgr/taskmgr.c [iso-8859-1]  
>  (original)
>  +++ trunk/reactos/base/applications/taskmgr/taskmgr.c [iso-8859-1]  
>  Tue Feb  3 16:25:39 2009
>  @@ -51,6 +51,12 @@
>      HANDLE hProcess;
>      HANDLE hToken;
>      TOKEN_PRIVILEGES tkp;
>  +    HANDLE hMutex;
>  +
>  +    /* check wether we're already running or not */
>  +    hMutex = CreateMutexW(NULL, TRUE, L"taskmgrros");
>  +    if ((!hMutex) || (GetLastError() == ERROR_ALREADY_EXISTS))
>  +        return 1;
>
>      /* Initialize global variables */
>      hInst = hInstance;
>  
Best regards,
Alex Ionescu

[Colin Finck]

Alex Ionescu wrote:
>   This won't be compatible with Windows
> applications. 
Well, I can only quote Timo on this matter:

"Surely we all trust you and you are probably right, but if you want me to
be *convinced*, you will hopefully answer my 3 questions:
1.) With what exactly [this won't be compatible]?
2.) Why [won't it be compatible]?
3.) Do you have a better suggestion?

ps: I assume that you have been in a hurry, that didn't allow you to be more
specific in the first instance."

Best regards,

Colin

[Ged]

I would assume from Alex's mail, he means Windows doesn't use the mutex, so
anything relying on this will fail

Ged.


-----Original Message-----
From: ros-dev-bounces(a)reactos.org [mailto:[e-mail]] On
Behalf Of Colin Finck
Sent: 04 February 2009 15:04
To: 'ReactOS Development List'
Subject: Re: [ros-dev] [ros-diffs] [cfinck] 39353: Gabriel
Ilardi(gabrielilardi(a)hotmail.it) - Allow only one instance ofTask-Manager to
be run at the same time See issue #3976 formore details.

Alex Ionescu wrote:
>   This won't be compatible with Windows
> applications. 
Well, I can only quote Timo on this matter:

"Surely we all trust you and you are probably right, but if you want me to
be *convinced*, you will hopefully answer my 3 questions:
1.) With what exactly [this won't be compatible]?
2.) Why [won't it be compatible]?
3.) Do you have a better suggestion?

ps: I assume that you have been in a hurry, that didn't allow you to be more
specific in the first instance."

Best regards,

Colin

_______________________________________________
Ros-dev mailing list
Ros-dev(a)reactos.org
http://www.reactos.org/mailman/listinfo/ros-dev

[Sarocet]

Using a mutex the taskmgr won't be able to open if there's another
unresponsive instance, which Windows allow.

Also, note that whatever method is used, it will be deemed as "a way of
disabling Ctrl+Alt+Supr".
http://blogs.msdn.com/oldnewthing/archive/2006/06/20/639479.aspx