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GLAST/LAT > DAQ and FSW > FSW > Doxygen Index > ITC / V2-1-7

Constituent: itc     Tag: rad750

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ITC_dispatch.c File Reference

Collection of dispatcher routines. More...

#include <string.h>
#include "PBS/FORK.h"
#include "PBS/TOC.h"
#include "MSG/MSG_pubdefs.h"
#include "CCSDS/CCSDS_pkt.h"
#include "ITC/ITC_pubdefs.h"
#include "ITC/ITC_msgs.h"
#include "ITC_confirm.h"
#include "ITC_inline.ih"
#include "ITC_prvdefs.h"

Include dependency graph for ITC_dispatch.c:

Functions
ITC_cb_Processor *	findProcessor (const ITC_CommandList *lst, unsigned int fnc)
	Find a command in a list of commands indexed by function code.
unsigned int	ITC_dispatchCTDB (void *prm, unsigned char *pkt)
	Driver level packet dispatch (used in CTDB driver).
FORK_cb_status	ITC_dispatch (FORK_cb_prm *prm, FORK_msg_hdr *msg)
	The heart of ITC task level dispatching.

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Detailed Description

Collection of dispatcher routines.

CVS $Id: ITC_dispatch.c,v 1.8 2005/01/07 05:05:43 apw Exp $

Author:

A.P.Waite

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Function Documentation

ITC_cb_Processor * findProcessor (  const ITC_CommandList *  lst, unsigned int  fnc )  [inline, static]

Find a command in a list of commands indexed by function code. Parameters: lst  (in) Command list fnc  (in) Function code Return values: NULL  Failure x  Address of routine

FORK_cb_status ITC_dispatch (  FORK_cb_prm *  prm, FORK_msg_hdr *  msg )

The heart of ITC task level dispatching. Parameters: prm  (in) User context parameter msg  (in) Message buffer Return values: FORK_C_CONTINUE  Continue fork ~FORK_C_CONTINUE  Shut down fork ITC_dispatch() is the heart of the ITC dispatching mechanism. It's used in both application and service tasks. In application tasks, it does a full protocol dispatch. In service tasks, it uses the service task dispatch (provided at the time the service task was created) to forward the packet to another node. Nearly true. The dispatcher also recognizes the special status of the "meta" queues. This mechanism is entirely internal to ITC (it's used to start, stop and otherwise interrogate the state of an ITC based task). These are dispatched the same way in all ITC based tasks.

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unsigned int ITC_dispatchCTDB (  void *  prm, unsigned char *  pkt )

Driver level packet dispatch (used in CTDB driver). Parameters: prm  (in) User context parameter pkt  (in) CCSDS telecommand (first byte of primary header) Return values: ITC_SUCCESS  Success ITC_ALOCFAIL  Cannot allocate packet to forward the command ITC_APIDRNG  APID invalid as spacecraft command ITC_APIDTBL  APID has no associated APID table entry ITC_QUEUTBL  APID does not map to a queue table entry ITC_GENERROR  Generic error ITC_dispatchCTDB() is designed for use in the CTDB receive task. It performs the first tier dispatch to a task/queue.

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