l4-hackers Digest, Vol 76, Issue 13

[Ronald Aigner]

Hi,

the open_component and close_component function do get as first
parameter the sender of the invocation (see Chapter 2.3 in the Dice
manual
http://www.inf.tu-dresden.de/content/institutes/sya/os/forschung/projekte/dice/manual-3.3.0.pdf).

To get the thread ID of the server to which you want to send the
open_call or close_call, you need some name service. See
http://www.inf.tu-dresden.de/index.php?node_id=1314&ln=en and
http://www.inf.tu-dresden.de/index.php?node_id=1315&ln=en.

Cheers, Ron.

fang zhengshu wrote:
> hi all,
>  
> could someone tell me how to get the thread id when do the
> open_call()/close_call()?
> or we can get the thread id unless wo do the l4_ipc_send() operation?
>  
> I only want to get the thread id who do the open_call()/close_call()
> operation? When more than one task do the operation The server can store
> the thread id.
> 
> thank you and best wishes.
>  
>  
> On Sun, Aug 30, 2009 at 6:00 PM,
> <l4-hackers-request at os.inf.tu-dresden.de
> <mailto:l4-hackers-request at os.inf.tu-dresden.de>> wrote:
> 
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>     Today's Topics:
> 
>       1. Re: can server side get the thread id of client side?
>          (fang zhengshu)
> 
> 
>     ----------------------------------------------------------------------
> 
>     Message: 1
>     Date: Sun, 30 Aug 2009 02:57:16 -0400
>     From: fang zhengshu <fangzhsh07 at gmail.com <mailto:fangzhsh07 at gmail.com>>
>     To: l4-hackers at os.inf.tu-dresden.de
>     <mailto:l4-hackers at os.inf.tu-dresden.de>
>     Subject: Re: can server side get the thread id of client side?
>     Message-ID:
>            <a73d246f0908292357w7ddaed5cwdb2a3013b07020c5 at mail.gmail.com
>     <mailto:a73d246f0908292357w7ddaed5cwdb2a3013b07020c5 at mail.gmail.com>>
>     Content-Type: text/plain; charset="iso-8859-1"
> 
>     hi all,
> 
>      3. Re: can server side get the thread id of client side?
>     >      (Bj?rn D?bel)
>     > Message: 3
>     > Date: Fri, 28 Aug 2009 09:40:17 +0200
>     > From: Bj?rn D?bel <doebel at os.inf.tu-dresden.de
>     <mailto:doebel at os.inf.tu-dresden.de>>
>     > To: L4 Hackers <l4-hackers at os.inf.tu-dresden.de
>     <mailto:l4-hackers at os.inf.tu-dresden.de>>
>     > Subject: Re: can server side get the thread id of client side?
>     > Message-ID: <4A9789E1.7080503 at os.inf.tu-dresden.de
>     <mailto:4A9789E1.7080503 at os.inf.tu-dresden.de>>
>     > Content-Type: text/plain; charset=ISO-8859-1
>     >
>     > -----BEGIN PGP SIGNED MESSAGE-----
>     > Hash: SHA1
>     >
>     > Hi,
>     >
>     > > I know that the client side can get the server's thread_id throw
>     name
>     > > service. I want to ask can the server side get the client's
>     task_id or
>     > > thread_id?
>     > > or must the client side send the thread_id to server?
>     >
>     > your server will call either l4_ipc_wait() or
>     l4_ipc_reply_and_wait() in
>     > order to receive the message from the client. In both cases there is a
>     > src parameter which will contain the client's thread ID after the
>     system
>     > call returns.
>     >
>     sorry for not explaining it clearly.
>     if I defined two functions in idl file, just like:
>     interface test{
>     int open(int fd, int flags);
>     int close(fd);
>     };
> 
>      and I implement them in the server side.
>     I know that when I use open()/close() in the client side, the server
>     will
>     call the function open_component()/close_component() which are in
>     the server
>     side.
> 
>     In the open_component()/close_component() function I want to get
>     thread id
>     of the caller to do some operation flag.but as we know, when we call
>     open()/close() in client side, the open_component()/close_component()
>     function in server side will be executed. so we can not use
>     l4_ipc_wait() or
>     l4_ipc_reply_and_wait() function in the
>     open_component()/close_component()
>     function, or it will be stop and wait for a message in the function.
>     So in
>     order to get the thread id in the
>     open_component()/close_component(), when
>     or where should I use the l4_ipc_wait() or l4_ipc_reply and wait()
>      to get
>     the thread id?
> 
>     thank you!
> 
> 
> 
> 
> 
>     --
>     fang,
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>     End of l4-hackers Digest, Vol 76, Issue 13
>     ******************************************
> 
> 
> 
> 
> -- 
> fang,
> 
> 
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> 
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