[erlang-questions] How to convert erlang_pid structure into ErlDrvTermData?

[Zhemzhitsky Sergey]

Hi guys,

 

I need to convert erlang_pid structure into ErlDrvTermData that will be passed to

driver_send_term(ErlDrvPort ix, ErlDrvTermData to, ErlDrvTermData* data, int len) function in linked-in driver.

 

Is it possible to achieve?

 

Best Regards,

Sergey

 

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[Ahmed Omar]

Hi Sergey, 

I think what you are looking for is

http://www.erlang.org/doc/man/erl_driver.html#driver_caller

"This function returns the process id of the process that made the current call to the driver. The process id can be used withdriver_send_term to send back data to the caller". 

or

http://www.erlang.org/doc/man/erl_driver.html#driver_connected

 

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[Sergey Zhemzhitsky]

Hello Ahmed,

Thanks a lot!
What I'd like to achieve is to send messages to any erlang process from a separate thread in a driver.
The only thing I was able to find is the following blog entry http://dudefrommangalore.blogspot.com/2009/03/rpc-from-erlang-linked-in-driver-port.html. According to the latest sources of the otp, this way should still be valid.

Regards,
Sergey