[plt-scheme] Synchronizing

The help desk could not find channels. Can you be a bit more specific?

Katsmall the Wise

By the way, thanks for the fast responses!

Robby Findler wrote:

>  For list-related administrative tasks:
>  http://list.cs.brown.edu/mailman/listinfo/plt-scheme
>
>You should probably use channels instead. Have the many threads put
>values into the channel and then have one thread takes values out of
>the channel and draws them. (Channels are only in the latest CVS
>version; in 203 use semaphores (and suffer))
>
>Robby
>
>At Tue, 22 Apr 2003 22:35:56 +0200, Katsmall the Wise wrote:
>  
>
>>  For list-related administrative tasks:
>>  http://list.cs.brown.edu/mailman/listinfo/plt-scheme
>>
>>I would like to make a procedure, that may be called from many threads, 
>>but if it is called from two threads at the same time it will block the 
>>second one until the first one finishes, and then run it.
>>
>>I want this because I have many drawing procedures that merely add 
>>something to a list, and appearantly some things get deleted because the 
>>procedures are called at the same time.
>>
>>Is there a simple solution to this?
>>
>>Katsmall the Wise
>>
>>
>>    
>>
>
>
>  
>
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