mailbox.h File Reference

Id

mailbox.h 1447 2008-08-12 19:23:34Z mschul

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#include <semaphore.h>
#include <stddef.h>

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Data Structures
struct	mbox
Functions
syscall	mailboxCreate (ushort)
	Create a mailbox that allows count outstanding messages.
syscall	mailboxDelete (mailbox)
	Delete a mailbox.
syscall	mailboxInit (void)
	Intializate mailbox structures.
syscall	mailboxReceive (mailbox)
	Receive a mailmsg from a mailbox.
syscall	mailboxSend (mailbox, int)
	Send a mailmsg to a mailbox.

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Detailed Description

Id

mailbox.h 1447 2008-08-12 19:23:34Z mschul

Definition in file mailbox.h.

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Function Documentation

syscall mailboxCreate

(

ushort

count

)

Create a mailbox that allows count outstanding messages.

Parameters:

count

maximum number of messages allowed for the mailbox

Returns:

the number of the mailbox, SYSERR if none are available

Definition at line 18 of file mailboxCreate.c.

References memget(), semcreate(), signal(), SYSERR, and wait().

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syscall mailboxDelete

(

mailbox

box

)

Delete a mailbox.

Parameters:

box

the number of the mailbox to delete

Returns:

OK if the mailbox was deleted successfully, otherwise SYSERR

Definition at line 19 of file mailboxDelete.c.

References memfree(), OK, semfree(), signal(), SYSERR, and wait().

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syscall mailboxInit

(

void

)

Intializate mailbox structures.

Returns:

OK if all mailboxes are initialized succssfully

Definition at line 19 of file mailboxInit.c.

References OK, and semcreate().

Referenced by sysinit().

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syscall mailboxReceive

(

mailbox

box

)

Receive a mailmsg from a mailbox.

Parameters:

box

the number of the mailbox to receive from

Returns:

the mailmsg that was dequeded, otherwise SYSERR

Definition at line 17 of file mailboxReceive.c.

References signal(), SYSERR, and wait().

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syscall mailboxSend	(	mailbox	box,
		int	mailmsg
	)

Send a mailmsg to a mailbox.

Parameters:

	box	the number of the mailbox to send to
	mailmsg	the mailmsg to send

Returns:

OK if the mailmsg was enqueued, otherwise SYSERR

Definition at line 18 of file mailboxSend.c.

References OK, signal(), SYSERR, and wait().

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