EHP.c File Reference

Event Handler Proxy, creates a proxy task to handle event related processing that is either not appropriate or too time consuming (i.e. results in unacceptable latency) in the LCBD event handling task). More...

#include <EFC/EHP.h>
#include <PBS/TASK.h>
#include <PBS/FORK.h>
#include <PBS/TOC.h>
#include <PBS/MBA.h>
#include <string.h>

Classes
struct	_EHP
Defines
#define	NQUES   31
Typedefs
typedef struct _EHP	EHP
Functions
static int	get_task_priority ()
	Get the priority of this task.
FORK_fcb *	EHP_create (void)
	Creates the Event Handler Proxy task.
unsigned int	EHP_destroy (void)
	Destroys the Event Handler Proxy task.
FORK_que *	EHP_queGet (int que_id)
	Gets the fork que handle of the specified fork que.
Variables
static EHP	Ehp = { NULL }

---

Detailed Description

Event Handler Proxy, creates a proxy task to handle event related processing that is either not appropriate or too time consuming (i.e. results in unacceptable latency) in the LCBD event handling task).

Author:

JJRussell - russell@slac.stanford.edu

   CVS $Id: EHP.c,v 1.2 2011/03/27 04:55:30 russell Exp $

A FORK task with 31 queues is established. Clients may request one of the que to do their work in and then que such work using the normal FORK_qusr routine.

---

Function Documentation

FORK_fcb * EHP_create

(

void

)

Creates the Event Handler Proxy task.

Returns:

The fork control block of the created task or NULL on failure

References get_task_priority().

Referenced by EHP_queGet().

unsigned int EHP_destroy

(

void

)

Destroys the Event Handler Proxy task.

Returns:

The status from FORK_destroy

FORK_que * EHP_queGet

(

int

que_id

)

Gets the fork que handle of the specified fork que.

Returns:

The FORK que handle or NULL on failure

This routine will create the fork task if is does not already exist.

References EHP_create().

static inline int get_task_priority

(

)

[inline, static]

Get the priority of this task.

Returns:

The priority of this task

This function uses CPU_DB_getTaskPriority on VXWORKs platforms and returns 0 for all host platforms. No host platform actually supports task priorities, so doing this eliminates CPU_DB from the load.

Referenced by EHP_create().