Main of l4io (including IPC server loop) and Miscellaneous Services

Herein resides everything concerning general io server purposes and miscellaneous functions not worth an own module. More...

Classes
struct	io_client
	l4io client structure type. More...
Miscellaneous Services (IPC interface)
Client registry and special services.
long	l4_io_register_client_component (CORBA_Object _dice_corba_obj, l4_io_drv_t type, CORBA_Server_Environment *_dice_corba_env)
	Client Registration.
long	l4_io_unregister_client_component (CORBA_Object _dice_corba_obj, const l4_threadid_t *client, CORBA_Server_Environment *_dice_corba_env)
	Client Unregistering.
long	l4_io_map_info_component (CORBA_Object _dice_corba_obj, l4_snd_fpage_t *info, CORBA_Server_Environment *_dice_corba_env)
	Request mapping of I/O's info page.
Typedefs
typedef struct io_client	io_client_t
	l4io client structure type.
Functions
static void	jiffies_thread (void *data)
	Jiffies thread loop.
int	io_jiffies_init ()
	Jiffies thread initialization.
__inline__ int	client_equal (io_client_t *c0, io_client_t *c1)
	Test client equality.
Variables
static unsigned long long volatile *	kclock
	kernel clock reference
l4io_info_t	io_info
	I/O info page.
static io_client_t	io_self
	I/O server claimed resources and root for client list.

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Detailed Description

Herein resides everything concerning general io server purposes and miscellaneous functions not worth an own module.

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Function Documentation

__inline__ int client_equal	(	io_client_t *	c0,
		io_client_t *	c1
	)

Test client equality.

Parameters:

	c0	first io client to test
	c1	second io client to test

Returns:

0 on equality, non-zero on inequality

Definition at line 52 of file io.h.

int io_jiffies_init

(

void

)

Jiffies thread initialization.

Returns:

0 on success, negative error code otherwise

Initialize jiffie counter thread.

Definition at line 110 of file jiffies.c.

static void jiffies_thread

(

void *

data

)

[static]

Jiffies thread loop.

Parameters:

data

dummy data pointer (unused)

This thread implements the LINUX jiffies counter. It sleeps and tries to correct the period using the L4 kernel clock.

XXX test for (wait < 0) to increment jiffies by 2 or more if JIFFIE_PERIOD is too short

Definition at line 73 of file jiffies.c.

long l4_io_map_info_component	(	CORBA_Object	_dice_corba_obj,
		l4_snd_fpage_t *	info,
		CORBA_Server_Environment *	_dice_corba_env
	)

Request mapping of I/O's info page.

Parameters:

_dice_corba_obj

DICE corba object

Return values:

	info	L4 fpage for I/O info
	_dice_corba_env	corba environment

Returns:

0 on success, negative error code otherwise

One fpage will be sent to the clients using the standard L4 fpage types/mechanisms.

Todo:

check registration on info page mapping

Definition at line 195 of file main.c.

long l4_io_register_client_component	(	CORBA_Object	_dice_corba_obj,
		l4_io_drv_t	type,
		CORBA_Server_Environment *	_dice_corba_env
	)

Client Registration.

Parameters:

	_dice_corba_obj	DICE corba object
	type	client info

Return values:

_dice_corba_env

corba environment

Returns:

0 on success, negative error code otherwise

Register client (driver server). I/O keeps a list of registered clients and only these will be served.

Definition at line 98 of file main.c.

long l4_io_unregister_client_component	(	CORBA_Object	_dice_corba_obj,
		const l4_threadid_t *	client,
		CORBA_Server_Environment *	_dice_corba_env
	)

Client Unregistering.

Parameters:

_dice_corba_obj

DICE corba object

Return values:

_dice_corba_env

corba environment

Returns:

0 on success, negative error code otherwise

Unregister client (driver server). I/O keeps a list of registered clients and only these will be served.

Test:

krishna: At this point we have to keep track of up-to-date resource allocation info -> all allocated resources should be freed on unregistering. (just I don't mind about this at this state, later driver replacing will be in scope of this)

Definition at line 147 of file main.c.