Thread doesn't die - .NET Framework

ns leonardo via .NET 247

Hello,

I am using p/Invoke to access a card reader device's dll and
I am using a thread to emulate a assync call from a sync call.
Whe I want to read a card, I start a new thead that makes a blocking call
while my application can continue. When the card is read the thread finishes.

But when the operation is canceled I have to kill the thread and it doesn't die.
I've tried to use Abort(), Suspend() and to turn the thread a background thread but it doesn't work.

I thing the thread doesn't die because it's blocked waiting the card.
Is there a way to force this therad to die?

Can somebody helpe me?
--------------------------------
From: ns leonardo

--------------------------------
From: ns leonardo

-----------------------
Posted by a user from .NET 247 (http://www.dotnet247.com/)

<Id>kOuw2cUUD0e6KgCxyvo2Mw==</Id>

Jul 21 '05 #1

Subscribe Post Reply

1235

Jonathan Allen

Try contacting the card reader's manufacturer. If they were nice, they have
a version of the call that times-out.

I cannot think of a way to abort the thread as long as its in non-CLR land,
the runtime has no way to know when it is safe to do so.

--
Jonathan Allen
"ns leonardo via .NET 247" <an*******@dotnet247.com> wrote in message
news:uZ*************@TK2MSFTNGP10.phx.gbl...

Hello,

I am using p/Invoke to access a card reader device's dll and
I am using a thread to emulate a assync call from a sync call.
Whe I want to read a card, I start a new thead that makes a blocking call
while my application can continue. When the card is read the thread finishes.
But when the operation is canceled I have to kill the thread and it doesn't die. I've tried to use Abort(), Suspend() and to turn the thread a background thread but it doesn't work.
I thing the thread doesn't die because it's blocked waiting the card.
Is there a way to force this therad to die?

Can somebody helpe me?
--------------------------------
From: ns leonardo

--------------------------------
From: ns leonardo

-----------------------
Posted by a user from .NET 247 (http://www.dotnet247.com/)

<Id>kOuw2cUUD0e6KgCxyvo2Mw==</Id>

Jul 21 '05 #2

David Levine

As the OP said, you cannot kill a thread while it is running in unmanaged
code. But....you can try running the thread from another appdomain. When you
need to stop the thread you can unload the appdomain - the runtime goes to
great lengths to kill threads that originate in other appdomains. Don't know
if it will work but it should be easy enough to test.

"ns leonardo via .NET 247" <an*******@dotnet247.com> wrote in message
news:uZ*************@TK2MSFTNGP10.phx.gbl...

Hello,

I am using p/Invoke to access a card reader device's dll and
I am using a thread to emulate a assync call from a sync call.
Whe I want to read a card, I start a new thead that makes a blocking call
while my application can continue. When the card is read the thread finishes.
But when the operation is canceled I have to kill the thread and it doesn't die. I've tried to use Abort(), Suspend() and to turn the thread a background thread but it doesn't work.
I thing the thread doesn't die because it's blocked waiting the card.
Is there a way to force this therad to die?

Can somebody helpe me?
--------------------------------
From: ns leonardo

--------------------------------
From: ns leonardo

-----------------------
Posted by a user from .NET 247 (http://www.dotnet247.com/)

<Id>kOuw2cUUD0e6KgCxyvo2Mw==</Id>

Jul 21 '05 #3

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