Hello,


I'm currently working on a multi threaded application and I would like
to create a pipe to communicate between them: the main thread will write
into the pipe some data and the working threads will read and execute. But
it seems that pipes don't exist in C# unless you create your own k,class.

I need to pass object reference between my threads so my first question
is: how do I get the reference (IntPtr) of a managed object ?

I had the idea to use a MemoryStream to write my IntPtr in because this
class is thread safe. Is it a good idea ? Did someone already tackled this
kind of problem ?

Thanks for any help !


Laurent

Laurent Navarro <(E-Mail Removed)> wrote:
> I'm currently working on a multi threaded application and I would like
> to create a pipe to communicate between them: the main thread will write
> into the pipe some data and the working threads will read and execute. But
> it seems that pipes don't exist in C# unless you create your own k,class.
>
> I need to pass object reference between my threads so my first question
> is: how do I get the reference (IntPtr) of a managed object ?

Why not just use a list of Object references? You don't need the IntPtr
at all.

--
Jon Skeet - <(E-Mail Removed)>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

Hi Jon,

OK I see your point, but if I want to use a list of object, I will have
to manage the multiple thread calls by myself with mutex, won't I ?

Thanks for your answer anyway.

Laurent




"Jon Skeet [C# MVP]" <(E-Mail Removed)> a écrit dans le message de news:
(E-Mail Removed)...
> Laurent Navarro <(E-Mail Removed)> wrote:
>> I'm currently working on a multi threaded application and I would
>> like
>> to create a pipe to communicate between them: the main thread will write
>> into the pipe some data and the working threads will read and execute.
>> But
>> it seems that pipes don't exist in C# unless you create your own k,class.
>>
>> I need to pass object reference between my threads so my first
>> question
>> is: how do I get the reference (IntPtr) of a managed object ?
>
> Why not just use a list of Object references? You don't need the IntPtr
> at all.
>
> --
> Jon Skeet - <(E-Mail Removed)>
> http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
> If replying to the group, please do not mail me too

Hi,

You could use a synced queue, did you try it ?

I use this kind of structure for a multithreaded TCP/IP server

--
Ignacio Machin
machin AT laceupsolutions com

"Laurent Navarro" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> Hello,
>
>
> I'm currently working on a multi threaded application and I would like
> to create a pipe to communicate between them: the main thread will write
> into the pipe some data and the working threads will read and execute. But
> it seems that pipes don't exist in C# unless you create your own k,class.
>
> I need to pass object reference between my threads so my first question
> is: how do I get the reference (IntPtr) of a managed object ?
>
> I had the idea to use a MemoryStream to write my IntPtr in because this
> class is thread safe. Is it a good idea ? Did someone already tackled this
> kind of problem ?
>
> Thanks for any help !
>
>
> Laurent
>

"Laurent Navarro" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi Jon,
>
> OK I see your point, but if I want to use a list of object, I will have
> to manage the multiple thread calls by myself with mutex, won't I ?
>
> Thanks for your answer anyway.

Take a look at System.Collections.Queue.Synchronized() method.

>
> Laurent
>
>
>
>
> "Jon Skeet [C# MVP]" <(E-Mail Removed)> a écrit dans le message de news:
> (E-Mail Removed)...
>> Laurent Navarro <(E-Mail Removed)> wrote:
>>> I'm currently working on a multi threaded application and I would
>>> like
>>> to create a pipe to communicate between them: the main thread will write
>>> into the pipe some data and the working threads will read and execute.
>>> But
>>> it seems that pipes don't exist in C# unless you create your own
>>> k,class.
>>>
>>> I need to pass object reference between my threads so my first
>>> question
>>> is: how do I get the reference (IntPtr) of a managed object ?
>>
>> Why not just use a list of Object references? You don't need the IntPtr
>> at all.
>>
>> --
>> Jon Skeet - <(E-Mail Removed)>
>> http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
>> If replying to the group, please do not mail me too
>
>

Laurent Navarro <(E-Mail Removed)> wrote:
> OK I see your point, but if I want to use a list of object, I will have
> to manage the multiple thread calls by myself with mutex, won't I ?

If you've got shared data, you'll need to manage the threading anyway.
It's not too hard though - and just managing threading for a single
queue is very easy.

See http://www.pobox.com/~skeet/csharp/threads for more threading info.

--
Jon Skeet - <(E-Mail Removed)>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

Hi Laurent,
I've developed very simple in use class library to make multithreaded
application development easier. Threads in this library communicate
using messages. Message can contain 'everything' you want. If I
correctly understand your problem - it may help you.
You'll find source codes with examples in vb.net and c# here:
http://www.sergejusz.com/boss_workers.htm
Kind regards
Sergejus
http://www.sergejusz.com

Laurent Navarro wrote:
> Hello,
>
>
> I'm currently working on a multi threaded application and I would like
> to create a pipe to communicate between them: the main thread will write
> into the pipe some data and the working threads will read and execute. But
> it seems that pipes don't exist in C# unless you create your own k,class.
>
> I need to pass object reference between my threads so my first question
> is: how do I get the reference (IntPtr) of a managed object ?
>
> I had the idea to use a MemoryStream to write my IntPtr in because this
> class is thread safe. Is it a good idea ? Did someone already tackled this
> kind of problem ?
>
> Thanks for any help !
>
>
> Laurent

Hi Sergejusz,


I'll give a look at your custom class, thanks for the link !

Laurent




"sergejusz" <(E-Mail Removed)> a écrit dans le message de news:
(E-Mail Removed)...
>
> Hi Laurent,
> I've developed very simple in use class library to make multithreaded
> application development easier. Threads in this library communicate
> using messages. Message can contain 'everything' you want. If I
> correctly understand your problem - it may help you.
> You'll find source codes with examples in vb.net and c# here:
> http://www.sergejusz.com/boss_workers.htm
> Kind regards
> Sergejus
> http://www.sergejusz.com
>
> Laurent Navarro wrote:
>> Hello,
>>
>>
>> I'm currently working on a multi threaded application and I would
>> like
>> to create a pipe to communicate between them: the main thread will write
>> into the pipe some data and the working threads will read and execute.
>> But
>> it seems that pipes don't exist in C# unless you create your own k,class.
>>
>> I need to pass object reference between my threads so my first
>> question
>> is: how do I get the reference (IntPtr) of a managed object ?
>>
>> I had the idea to use a MemoryStream to write my IntPtr in because
>> this
>> class is thread safe. Is it a good idea ? Did someone already tackled
>> this
>> kind of problem ?
>>
>> Thanks for any help !
>>
>>
>> Laurent
>