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added documentation

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David Yat Sin 2011-01-19 14:18:23 -05:00
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libs/freetdm/docs/io_modules.txt Normal file
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Last Updated: Jan 19, 2011
== BACKGROUND ==
The IO module provides an abstracted IO interface to FreeTDM.
== SHUTDOWN ==
Upon global shutdown, for each channel FIO_CLOSE_FUNCTION will be called.
When FIO_CLOSE_FUNCTION is called, all waiters on this channel shall be signalled.
If FIO_WAIT_FUNCTION is called on a function that has already been closed, this function shall return FTDM_TIMEOUT without blocking.
FIO_CHANNEL_DESTROY will eventually be called, and IO module is responsible for clearing all internal states and free allocated memory upon channel destroy.