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i2o_msg_get
Langue: en
Version: June 2009 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
NAME
i2o_msg_get - obtain an I2O message from the IOPSYNOPSIS
- struct i2o_message * i2o_msg_get(struct i2o_controller * c);
ARGUMENTS
c
- I2O controller
DESCRIPTION
This function tries to get a message frame. If no message frame is available do not wait until one is availabe (see also i2o_msg_get_wait). The returned pointer to the message frame is not in I/O memory, it is allocated from a mempool. But because a MFA is allocated from the controller too it is guaranteed that i2o_msg_post will never fail.
On a success a pointer to the message frame is returned. If the message queue is empty -EBUSY is returned and if no memory is available -ENOMEM is returned.
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Contenus ©2006-2024 Benjamin Poulain
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