Very Computer

hi....

i wanted to know if its possible to update a text view from a child
after a fork. i have tried it and it didnt work, also i had read the
same thing somewhere else. is there any other solution to this
problem?

thanks.
pratap

In general you shouldn't access the same X connection from more than
one process. When calling fork you must choose who continues to use
the connection. It should not be a problem for the child to use the
connection, if the parent never uses it after calling fork.

If you need to update the window from multiple processes, you should
somehow send the update requests to a single process. Can't the child
send a request to the parent, and let the parent itself update the
window?

Otherwise an option could be to create a single process that handles
the X connection and communicates with all your processes.

Using the same X connection from multiple threads sharing the same
address space should work if you are able to avoid race conditions.
I don't know if the library you use is thread safe, but otherwise
you might be able to make a semaphore of your own and wrap all the
library calls with it.

--
Kasper Dupont -- der bruger for meget tid p? usenet.

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