Handling events: select/epoll

Functions
int	easynmc_pollmark (struct easynmc_handle *h)

Detailed Description

As an alternative to tokens you can use system epoll or select calls to handle events from DSP. To do that, you have to call select/epoll with memfd field of easynmc handle. The following convention is used:

• POLLIN - An LP interrupt has been received
• POLLPRI - An HP interrupt has been received
• POLLHUP - Someone sent an NMI interrupt to the NMC core.

easynmc.h declares convenience POLLLP, POLLHP and POLLNMI constants as well as EPOLLLP, EPOLLHP and EPOLLNMI

The driver will dispatch only one event at a time. You can use easynmc_pollmark() to clean any pending events. You are advised to do that once before starting to process any events.

Function Documentation

int easynmc_pollmark

(

struct easynmc_handle *

h

)

Reset any pending events for poll/epoll interface

Parameters

h

Returns

Definition at line 1097 of file easynmc-core.c.

References easynmc_handle::iofd.

Referenced by do_mon_epoll(), and main().