Event interface

Event C interface. More...

Collaboration diagram for Event interface:

Functions
long	l4re_event_get_buffer (const l4_cap_idx_t server, const l4re_ds_t ds) L4_NOTHROW
	Get an event signal buffer.
long	l4re_event_get_num_streams (const l4_cap_idx_t server) L4_NOTHROW
	Get number of streams.
long	l4re_event_get_stream_info (const l4_cap_idx_t server, int idx, l4re_event_stream_info_t *info) L4_NOTHROW
	Get information on a stream.
long	l4re_event_get_stream_info_for_id (const l4_cap_idx_t server, l4_umword_t stream_id, l4re_event_stream_info_t *info) L4_NOTHROW
	Get info for a stream given a stream id.
long	l4re_event_get_axis_info (const l4_cap_idx_t server, l4_umword_t id, unsigned naxes, unsigned const *axis, l4re_event_absinfo_t *info) L4_NOTHROW
	Get Axis information for a stream.

Detailed Description

Event C interface.

Function Documentation

l4re_event_get_axis_info()

long l4re_event_get_axis_info	(	const l4_cap_idx_t	server,
		l4_umword_t	id,
		unsigned	naxes,
		unsigned const *	axis,
		l4re_event_absinfo_t *	info
	)

Get Axis information for a stream.

Parameters

	server	Server to talk to.
	id	Id of the stream to get information from.
	naxes	Number of axes in axis array.
[in]	axis	Array of axis IDs whose information should be retrieved.
[out]	info	Information buffer to store the retrieved axis infos.

Return values

0	Success
<0	Error

See also

L4Re::Event::get_axis_info

l4re_event_get_buffer()

long l4re_event_get_buffer	(	const l4_cap_idx_t	server,
		const l4re_ds_t	ds
	)

Get an event signal buffer.

Parameters

server	Server to talk to.
ds	Buffer to event data.

Returns

0 for success, <0 on error

See also

L4Re::Event::get_buffer

l4re_event_get_num_streams()

long l4re_event_get_num_streams

(

const l4_cap_idx_t

server

)

Get number of streams.

Parameters

server

Server to talk to.

Returns

0 for success, <0 on error

See also

L4Re::Event::get_num_streams

l4re_event_get_stream_info()

long l4re_event_get_stream_info	(	const l4_cap_idx_t	server,
		int	idx,
		l4re_event_stream_info_t *	info
	)

Get information on a stream.

Parameters

	server	Server to talk to.
	idx	Index value.
[out]	info	Information buffer.

Returns

0 for success, <0 on error

See also

L4Re::Event::get_stream_info

l4re_event_get_stream_info_for_id()

long l4re_event_get_stream_info_for_id	(	const l4_cap_idx_t	server,
		l4_umword_t	stream_id,
		l4re_event_stream_info_t *	info
	)

Get info for a stream given a stream id.

Parameters

	server	Server to talk to.
	stream_id	Stream ID.
[out]	info	Information buffer.

Returns

0 for success, <0 on error

See also

L4Re::Event::get_stream_info_for_id