/*
|
/*
|
FreeRTOS.org V4.2.0 - Copyright (C) 2003-2007 Richard Barry.
|
FreeRTOS.org V4.2.0 - Copyright (C) 2003-2007 Richard Barry.
|
|
|
This file is part of the FreeRTOS.org distribution.
|
This file is part of the FreeRTOS.org distribution.
|
|
|
FreeRTOS.org is free software; you can redistribute it and/or modify
|
FreeRTOS.org is free software; you can redistribute it and/or modify
|
it under the terms of the GNU General Public License as published by
|
it under the terms of the GNU General Public License as published by
|
the Free Software Foundation; either version 2 of the License, or
|
the Free Software Foundation; either version 2 of the License, or
|
(at your option) any later version.
|
(at your option) any later version.
|
|
|
FreeRTOS.org is distributed in the hope that it will be useful,
|
FreeRTOS.org is distributed in the hope that it will be useful,
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
GNU General Public License for more details.
|
GNU General Public License for more details.
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|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with FreeRTOS.org; if not, write to the Free Software
|
along with FreeRTOS.org; if not, write to the Free Software
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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|
|
A special exception to the GPL can be applied should you wish to distribute
|
A special exception to the GPL can be applied should you wish to distribute
|
a combined work that includes FreeRTOS.org, without being obliged to provide
|
a combined work that includes FreeRTOS.org, without being obliged to provide
|
the source code for any proprietary components. See the licensing section
|
the source code for any proprietary components. See the licensing section
|
of http://www.FreeRTOS.org for full details of how and when the exception
|
of http://www.FreeRTOS.org for full details of how and when the exception
|
can be applied.
|
can be applied.
|
|
|
***************************************************************************
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***************************************************************************
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See http://www.FreeRTOS.org for documentation, latest information, license
|
See http://www.FreeRTOS.org for documentation, latest information, license
|
and contact details. Please ensure to read the configuration and relevant
|
and contact details. Please ensure to read the configuration and relevant
|
port sections of the online documentation.
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port sections of the online documentation.
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***************************************************************************
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***************************************************************************
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*/
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*/
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|
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#include "FreeRTOS.h"
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#include "FreeRTOS.h"
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#include "task.h"
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#include "task.h"
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#include "croutine.h"
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#include "croutine.h"
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|
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/* Lists for ready and blocked co-routines. --------------------*/
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/* Lists for ready and blocked co-routines. --------------------*/
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static xList pxReadyCoRoutineLists[ configMAX_CO_ROUTINE_PRIORITIES ]; /*< Prioritised ready co-routines. */
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static xList pxReadyCoRoutineLists[ configMAX_CO_ROUTINE_PRIORITIES ]; /*< Prioritised ready co-routines. */
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static xList xDelayedCoRoutineList1; /*< Delayed co-routines. */
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static xList xDelayedCoRoutineList1; /*< Delayed co-routines. */
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static xList xDelayedCoRoutineList2; /*< Delayed co-routines (two lists are used - one for delays that have overflowed the current tick count. */
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static xList xDelayedCoRoutineList2; /*< Delayed co-routines (two lists are used - one for delays that have overflowed the current tick count. */
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static xList * pxDelayedCoRoutineList; /*< Points to the delayed co-routine list currently being used. */
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static xList * pxDelayedCoRoutineList; /*< Points to the delayed co-routine list currently being used. */
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static xList * pxOverflowDelayedCoRoutineList; /*< Points to the delayed co-routine list currently being used to hold co-routines that have overflowed the current tick count. */
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static xList * pxOverflowDelayedCoRoutineList; /*< Points to the delayed co-routine list currently being used to hold co-routines that have overflowed the current tick count. */
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static xList xPendingReadyList; /*< Holds co-routines that have been readied by an external event. They cannot be added directly to the ready lists as the ready lists cannot be accessed by interrupts. */
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static xList xPendingReadyList; /*< Holds co-routines that have been readied by an external event. They cannot be added directly to the ready lists as the ready lists cannot be accessed by interrupts. */
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|
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/* Other file private variables. --------------------------------*/
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/* Other file private variables. --------------------------------*/
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corCRCB * pxCurrentCoRoutine = NULL;
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corCRCB * pxCurrentCoRoutine = NULL;
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static unsigned portBASE_TYPE uxTopCoRoutineReadyPriority = 0;
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static unsigned portBASE_TYPE uxTopCoRoutineReadyPriority = 0;
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static portTickType xCoRoutineTickCount = 0;
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static portTickType xCoRoutineTickCount = 0;
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|
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/* The initial state of the co-routine when it is created. */
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/* The initial state of the co-routine when it is created. */
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#define corINITIAL_STATE ( 0 )
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#define corINITIAL_STATE ( 0 )
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|
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/*
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/*
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* Place the co-routine represented by pxCRCB into the appropriate ready queue
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* Place the co-routine represented by pxCRCB into the appropriate ready queue
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* for the priority. It is inserted at the end of the list.
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* for the priority. It is inserted at the end of the list.
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*
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*
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* This macro accesses the co-routine ready lists and therefore must not be
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* This macro accesses the co-routine ready lists and therefore must not be
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* used from within an ISR.
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* used from within an ISR.
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*/
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*/
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#define prvAddCoRoutineToReadyQueue( pxCRCB ) \
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#define prvAddCoRoutineToReadyQueue( pxCRCB ) \
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{ \
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{ \
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if( pxCRCB->uxPriority > uxTopCoRoutineReadyPriority ) \
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if( pxCRCB->uxPriority > uxTopCoRoutineReadyPriority ) \
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{ \
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{ \
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uxTopCoRoutineReadyPriority = pxCRCB->uxPriority; \
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uxTopCoRoutineReadyPriority = pxCRCB->uxPriority; \
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} \
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} \
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vListInsertEnd( ( xList * ) &( pxReadyCoRoutineLists[ pxCRCB->uxPriority ] ), &( pxCRCB->xGenericListItem ) ); \
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vListInsertEnd( ( xList * ) &( pxReadyCoRoutineLists[ pxCRCB->uxPriority ] ), &( pxCRCB->xGenericListItem ) ); \
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}
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}
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/*
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/*
|
* Utility to ready all the lists used by the scheduler. This is called
|
* Utility to ready all the lists used by the scheduler. This is called
|
* automatically upon the creation of the first co-routine.
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* automatically upon the creation of the first co-routine.
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*/
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*/
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static void prvInitialiseCoRoutineLists( void );
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static void prvInitialiseCoRoutineLists( void );
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|
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/*
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/*
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* Co-routines that are readied by an interrupt cannot be placed directly into
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* Co-routines that are readied by an interrupt cannot be placed directly into
|
* the ready lists (there is no mutual exclusion). Instead they are placed in
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* the ready lists (there is no mutual exclusion). Instead they are placed in
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* in the pending ready list in order that they can later be moved to the ready
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* in the pending ready list in order that they can later be moved to the ready
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* list by the co-routine scheduler.
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* list by the co-routine scheduler.
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*/
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*/
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static inline void prvCheckPendingReadyList( void );
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static inline void prvCheckPendingReadyList( void );
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|
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/*
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/*
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* Macro that looks at the list of co-routines that are currently delayed to
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* Macro that looks at the list of co-routines that are currently delayed to
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* see if any require waking.
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* see if any require waking.
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*
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*
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* Co-routines are stored in the queue in the order of their wake time -
|
* Co-routines are stored in the queue in the order of their wake time -
|
* meaning once one co-routine has been found whose timer has not expired
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* meaning once one co-routine has been found whose timer has not expired
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* we need not look any further down the list.
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* we need not look any further down the list.
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*/
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*/
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static inline void prvCheckDelayedList( void );
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static inline void prvCheckDelayedList( void );
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|
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/*-----------------------------------------------------------*/
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/*-----------------------------------------------------------*/
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signed portBASE_TYPE xCoRoutineCreate( crCOROUTINE_CODE pxCoRoutineCode, unsigned portBASE_TYPE uxPriority, unsigned portBASE_TYPE uxIndex )
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signed portBASE_TYPE xCoRoutineCreate( crCOROUTINE_CODE pxCoRoutineCode, unsigned portBASE_TYPE uxPriority, unsigned portBASE_TYPE uxIndex )
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{
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{
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signed portBASE_TYPE xReturn;
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signed portBASE_TYPE xReturn;
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corCRCB *pxCoRoutine;
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corCRCB *pxCoRoutine;
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|
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/* Allocate the memory that will store the co-routine control block. */
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/* Allocate the memory that will store the co-routine control block. */
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pxCoRoutine = ( corCRCB * ) pvPortMalloc( sizeof( corCRCB ) );
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pxCoRoutine = ( corCRCB * ) pvPortMalloc( sizeof( corCRCB ) );
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if( pxCoRoutine )
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if( pxCoRoutine )
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{
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{
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/* If pxCurrentCoRoutine is NULL then this is the first co-routine to
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/* If pxCurrentCoRoutine is NULL then this is the first co-routine to
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be created and the co-routine data structures need initialising. */
|
be created and the co-routine data structures need initialising. */
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if( pxCurrentCoRoutine == NULL )
|
if( pxCurrentCoRoutine == NULL )
|
{
|
{
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pxCurrentCoRoutine = pxCoRoutine;
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pxCurrentCoRoutine = pxCoRoutine;
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prvInitialiseCoRoutineLists();
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prvInitialiseCoRoutineLists();
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}
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}
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|
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/* Check the priority is within limits. */
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/* Check the priority is within limits. */
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if( uxPriority >= configMAX_CO_ROUTINE_PRIORITIES )
|
if( uxPriority >= configMAX_CO_ROUTINE_PRIORITIES )
|
{
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{
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uxPriority = configMAX_CO_ROUTINE_PRIORITIES - 1;
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uxPriority = configMAX_CO_ROUTINE_PRIORITIES - 1;
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}
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}
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|
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/* Fill out the co-routine control block from the function parameters. */
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/* Fill out the co-routine control block from the function parameters. */
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pxCoRoutine->uxState = corINITIAL_STATE;
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pxCoRoutine->uxState = corINITIAL_STATE;
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pxCoRoutine->uxPriority = uxPriority;
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pxCoRoutine->uxPriority = uxPriority;
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pxCoRoutine->uxIndex = uxIndex;
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pxCoRoutine->uxIndex = uxIndex;
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pxCoRoutine->pxCoRoutineFunction = pxCoRoutineCode;
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pxCoRoutine->pxCoRoutineFunction = pxCoRoutineCode;
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|
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/* Initialise all the other co-routine control block parameters. */
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/* Initialise all the other co-routine control block parameters. */
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vListInitialiseItem( &( pxCoRoutine->xGenericListItem ) );
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vListInitialiseItem( &( pxCoRoutine->xGenericListItem ) );
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vListInitialiseItem( &( pxCoRoutine->xEventListItem ) );
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vListInitialiseItem( &( pxCoRoutine->xEventListItem ) );
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|
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/* Set the co-routine control block as a link back from the xListItem.
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/* Set the co-routine control block as a link back from the xListItem.
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This is so we can get back to the containing CRCB from a generic item
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This is so we can get back to the containing CRCB from a generic item
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in a list. */
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in a list. */
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listSET_LIST_ITEM_OWNER( &( pxCoRoutine->xGenericListItem ), pxCoRoutine );
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listSET_LIST_ITEM_OWNER( &( pxCoRoutine->xGenericListItem ), pxCoRoutine );
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listSET_LIST_ITEM_OWNER( &( pxCoRoutine->xEventListItem ), pxCoRoutine );
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listSET_LIST_ITEM_OWNER( &( pxCoRoutine->xEventListItem ), pxCoRoutine );
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/* Event lists are always in priority order. */
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/* Event lists are always in priority order. */
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listSET_LIST_ITEM_VALUE( &( pxCoRoutine->xEventListItem ), configMAX_PRIORITIES - ( portTickType ) uxPriority );
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listSET_LIST_ITEM_VALUE( &( pxCoRoutine->xEventListItem ), configMAX_PRIORITIES - ( portTickType ) uxPriority );
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|
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/* Now the co-routine has been initialised it can be added to the ready
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/* Now the co-routine has been initialised it can be added to the ready
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list at the correct priority. */
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list at the correct priority. */
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prvAddCoRoutineToReadyQueue( pxCoRoutine );
|
prvAddCoRoutineToReadyQueue( pxCoRoutine );
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|
|
xReturn = pdPASS;
|
xReturn = pdPASS;
|
}
|
}
|
else
|
else
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{
|
{
|
xReturn = errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY;
|
xReturn = errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY;
|
}
|
}
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|
|
return xReturn;
|
return xReturn;
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}
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}
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/*-----------------------------------------------------------*/
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/*-----------------------------------------------------------*/
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|
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void vCoRoutineAddToDelayedList( portTickType xTicksToDelay, xList *pxEventList )
|
void vCoRoutineAddToDelayedList( portTickType xTicksToDelay, xList *pxEventList )
|
{
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{
|
portTickType xTimeToWake;
|
portTickType xTimeToWake;
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|
|
/* Calculate the time to wake - this may overflow but this is
|
/* Calculate the time to wake - this may overflow but this is
|
not a problem. */
|
not a problem. */
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xTimeToWake = xCoRoutineTickCount + xTicksToDelay;
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xTimeToWake = xCoRoutineTickCount + xTicksToDelay;
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|
|
/* We must remove ourselves from the ready list before adding
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/* We must remove ourselves from the ready list before adding
|
ourselves to the blocked list as the same list item is used for
|
ourselves to the blocked list as the same list item is used for
|
both lists. */
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both lists. */
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vListRemove( ( xListItem * ) &( pxCurrentCoRoutine->xGenericListItem ) );
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vListRemove( ( xListItem * ) &( pxCurrentCoRoutine->xGenericListItem ) );
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|
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/* The list item will be inserted in wake time order. */
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/* The list item will be inserted in wake time order. */
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listSET_LIST_ITEM_VALUE( &( pxCurrentCoRoutine->xGenericListItem ), xTimeToWake );
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listSET_LIST_ITEM_VALUE( &( pxCurrentCoRoutine->xGenericListItem ), xTimeToWake );
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|
|
if( xTimeToWake < xCoRoutineTickCount )
|
if( xTimeToWake < xCoRoutineTickCount )
|
{
|
{
|
/* Wake time has overflowed. Place this item in the
|
/* Wake time has overflowed. Place this item in the
|
overflow list. */
|
overflow list. */
|
vListInsert( ( xList * ) pxOverflowDelayedCoRoutineList, ( xListItem * ) &( pxCurrentCoRoutine->xGenericListItem ) );
|
vListInsert( ( xList * ) pxOverflowDelayedCoRoutineList, ( xListItem * ) &( pxCurrentCoRoutine->xGenericListItem ) );
|
}
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}
|
else
|
else
|
{
|
{
|
/* The wake time has not overflowed, so we can use the
|
/* The wake time has not overflowed, so we can use the
|
current block list. */
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current block list. */
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vListInsert( ( xList * ) pxDelayedCoRoutineList, ( xListItem * ) &( pxCurrentCoRoutine->xGenericListItem ) );
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vListInsert( ( xList * ) pxDelayedCoRoutineList, ( xListItem * ) &( pxCurrentCoRoutine->xGenericListItem ) );
|
}
|
}
|
|
|
if( pxEventList )
|
if( pxEventList )
|
{
|
{
|
/* Also add the co-routine to an event list. If this is done then the
|
/* Also add the co-routine to an event list. If this is done then the
|
function must be called with interrupts disabled. */
|
function must be called with interrupts disabled. */
|
vListInsert( pxEventList, &( pxCurrentCoRoutine->xEventListItem ) );
|
vListInsert( pxEventList, &( pxCurrentCoRoutine->xEventListItem ) );
|
}
|
}
|
}
|
}
|
/*-----------------------------------------------------------*/
|
/*-----------------------------------------------------------*/
|
|
|
static inline void prvCheckPendingReadyList( void )
|
static inline void prvCheckPendingReadyList( void )
|
{
|
{
|
/* Are there any co-routines waiting to get moved to the ready list? These
|
/* Are there any co-routines waiting to get moved to the ready list? These
|
are co-routines that have been readied by an ISR. The ISR cannot access
|
are co-routines that have been readied by an ISR. The ISR cannot access
|
the ready lists itself. */
|
the ready lists itself. */
|
while( !listLIST_IS_EMPTY( &xPendingReadyList ) )
|
while( !listLIST_IS_EMPTY( &xPendingReadyList ) )
|
{
|
{
|
corCRCB *pxUnblockedCRCB;
|
corCRCB *pxUnblockedCRCB;
|
|
|
/* The pending ready list can be accessed by an ISR. */
|
/* The pending ready list can be accessed by an ISR. */
|
portDISABLE_INTERRUPTS();
|
portDISABLE_INTERRUPTS();
|
{
|
{
|
pxUnblockedCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( (&xPendingReadyList) );
|
pxUnblockedCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( (&xPendingReadyList) );
|
vListRemove( &( pxUnblockedCRCB->xEventListItem ) );
|
vListRemove( &( pxUnblockedCRCB->xEventListItem ) );
|
}
|
}
|
portENABLE_INTERRUPTS();
|
portENABLE_INTERRUPTS();
|
|
|
vListRemove( &( pxUnblockedCRCB->xGenericListItem ) );
|
vListRemove( &( pxUnblockedCRCB->xGenericListItem ) );
|
prvAddCoRoutineToReadyQueue( pxUnblockedCRCB );
|
prvAddCoRoutineToReadyQueue( pxUnblockedCRCB );
|
}
|
}
|
}
|
}
|
/*-----------------------------------------------------------*/
|
/*-----------------------------------------------------------*/
|
|
|
static inline void prvCheckDelayedList( void )
|
static inline void prvCheckDelayedList( void )
|
{
|
{
|
static portTickType xLastTickCount, xPassedTicks;
|
static portTickType xLastTickCount, xPassedTicks;
|
corCRCB *pxCRCB;
|
corCRCB *pxCRCB;
|
|
|
xPassedTicks = xTaskGetTickCount() - xLastTickCount;
|
xPassedTicks = xTaskGetTickCount() - xLastTickCount;
|
while( xPassedTicks )
|
while( xPassedTicks )
|
{
|
{
|
xCoRoutineTickCount++;
|
xCoRoutineTickCount++;
|
xPassedTicks--;
|
xPassedTicks--;
|
|
|
/* If the tick count has overflowed we need to swap the ready lists. */
|
/* If the tick count has overflowed we need to swap the ready lists. */
|
if( xCoRoutineTickCount == 0 )
|
if( xCoRoutineTickCount == 0 )
|
{
|
{
|
xList * pxTemp;
|
xList * pxTemp;
|
|
|
/* Tick count has overflowed so we need to swap the delay lists. If there are
|
/* Tick count has overflowed so we need to swap the delay lists. If there are
|
any items in pxDelayedCoRoutineList here then there is an error! */
|
any items in pxDelayedCoRoutineList here then there is an error! */
|
pxTemp = pxDelayedCoRoutineList;
|
pxTemp = pxDelayedCoRoutineList;
|
pxDelayedCoRoutineList = pxOverflowDelayedCoRoutineList;
|
pxDelayedCoRoutineList = pxOverflowDelayedCoRoutineList;
|
pxOverflowDelayedCoRoutineList = pxTemp;
|
pxOverflowDelayedCoRoutineList = pxTemp;
|
}
|
}
|
|
|
/* See if this tick has made a timeout expire. */
|
/* See if this tick has made a timeout expire. */
|
while( ( pxCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxDelayedCoRoutineList ) ) != NULL )
|
while( ( pxCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxDelayedCoRoutineList ) ) != NULL )
|
{
|
{
|
if( xCoRoutineTickCount < listGET_LIST_ITEM_VALUE( &( pxCRCB->xGenericListItem ) ) )
|
if( xCoRoutineTickCount < listGET_LIST_ITEM_VALUE( &( pxCRCB->xGenericListItem ) ) )
|
{
|
{
|
/* Timeout not yet expired. */
|
/* Timeout not yet expired. */
|
break;
|
break;
|
}
|
}
|
|
|
portDISABLE_INTERRUPTS();
|
portDISABLE_INTERRUPTS();
|
{
|
{
|
/* The event could have occurred just before this critical
|
/* The event could have occurred just before this critical
|
section. If this is the case then the generic list item will
|
section. If this is the case then the generic list item will
|
have been moved to the pending ready list and the following
|
have been moved to the pending ready list and the following
|
line is still valid. Also the pvContainer parameter will have
|
line is still valid. Also the pvContainer parameter will have
|
been set to NULL so the following lines are also valid. */
|
been set to NULL so the following lines are also valid. */
|
vListRemove( &( pxCRCB->xGenericListItem ) );
|
vListRemove( &( pxCRCB->xGenericListItem ) );
|
|
|
/* Is the co-routine waiting on an event also? */
|
/* Is the co-routine waiting on an event also? */
|
if( pxCRCB->xEventListItem.pvContainer )
|
if( pxCRCB->xEventListItem.pvContainer )
|
{
|
{
|
vListRemove( &( pxCRCB->xEventListItem ) );
|
vListRemove( &( pxCRCB->xEventListItem ) );
|
}
|
}
|
}
|
}
|
portENABLE_INTERRUPTS();
|
portENABLE_INTERRUPTS();
|
|
|
prvAddCoRoutineToReadyQueue( pxCRCB );
|
prvAddCoRoutineToReadyQueue( pxCRCB );
|
}
|
}
|
}
|
}
|
|
|
xLastTickCount = xCoRoutineTickCount;
|
xLastTickCount = xCoRoutineTickCount;
|
}
|
}
|
/*-----------------------------------------------------------*/
|
/*-----------------------------------------------------------*/
|
|
|
void vCoRoutineSchedule( void )
|
void vCoRoutineSchedule( void )
|
{
|
{
|
/* See if any co-routines readied by events need moving to the ready lists. */
|
/* See if any co-routines readied by events need moving to the ready lists. */
|
prvCheckPendingReadyList();
|
prvCheckPendingReadyList();
|
|
|
/* See if any delayed co-routines have timed out. */
|
/* See if any delayed co-routines have timed out. */
|
prvCheckDelayedList();
|
prvCheckDelayedList();
|
|
|
/* Find the highest priority queue that contains ready co-routines. */
|
/* Find the highest priority queue that contains ready co-routines. */
|
while( listLIST_IS_EMPTY( &( pxReadyCoRoutineLists[ uxTopCoRoutineReadyPriority ] ) ) )
|
while( listLIST_IS_EMPTY( &( pxReadyCoRoutineLists[ uxTopCoRoutineReadyPriority ] ) ) )
|
{
|
{
|
if( uxTopCoRoutineReadyPriority == 0 )
|
if( uxTopCoRoutineReadyPriority == 0 )
|
{
|
{
|
/* No more co-routines to check. */
|
/* No more co-routines to check. */
|
return;
|
return;
|
}
|
}
|
--uxTopCoRoutineReadyPriority;
|
--uxTopCoRoutineReadyPriority;
|
}
|
}
|
|
|
/* listGET_OWNER_OF_NEXT_ENTRY walks through the list, so the co-routines
|
/* listGET_OWNER_OF_NEXT_ENTRY walks through the list, so the co-routines
|
of the same priority get an equal share of the processor time. */
|
of the same priority get an equal share of the processor time. */
|
listGET_OWNER_OF_NEXT_ENTRY( pxCurrentCoRoutine, &( pxReadyCoRoutineLists[ uxTopCoRoutineReadyPriority ] ) );
|
listGET_OWNER_OF_NEXT_ENTRY( pxCurrentCoRoutine, &( pxReadyCoRoutineLists[ uxTopCoRoutineReadyPriority ] ) );
|
|
|
/* Call the co-routine. */
|
/* Call the co-routine. */
|
( pxCurrentCoRoutine->pxCoRoutineFunction )( pxCurrentCoRoutine, pxCurrentCoRoutine->uxIndex );
|
( pxCurrentCoRoutine->pxCoRoutineFunction )( pxCurrentCoRoutine, pxCurrentCoRoutine->uxIndex );
|
|
|
return;
|
return;
|
}
|
}
|
/*-----------------------------------------------------------*/
|
/*-----------------------------------------------------------*/
|
|
|
static void prvInitialiseCoRoutineLists( void )
|
static void prvInitialiseCoRoutineLists( void )
|
{
|
{
|
unsigned portBASE_TYPE uxPriority;
|
unsigned portBASE_TYPE uxPriority;
|
|
|
for( uxPriority = 0; uxPriority < configMAX_CO_ROUTINE_PRIORITIES; uxPriority++ )
|
for( uxPriority = 0; uxPriority < configMAX_CO_ROUTINE_PRIORITIES; uxPriority++ )
|
{
|
{
|
vListInitialise( ( xList * ) &( pxReadyCoRoutineLists[ uxPriority ] ) );
|
vListInitialise( ( xList * ) &( pxReadyCoRoutineLists[ uxPriority ] ) );
|
}
|
}
|
|
|
vListInitialise( ( xList * ) &xDelayedCoRoutineList1 );
|
vListInitialise( ( xList * ) &xDelayedCoRoutineList1 );
|
vListInitialise( ( xList * ) &xDelayedCoRoutineList2 );
|
vListInitialise( ( xList * ) &xDelayedCoRoutineList2 );
|
vListInitialise( ( xList * ) &xPendingReadyList );
|
vListInitialise( ( xList * ) &xPendingReadyList );
|
|
|
/* Start with pxDelayedCoRoutineList using list1 and the
|
/* Start with pxDelayedCoRoutineList using list1 and the
|
pxOverflowDelayedCoRoutineList using list2. */
|
pxOverflowDelayedCoRoutineList using list2. */
|
pxDelayedCoRoutineList = &xDelayedCoRoutineList1;
|
pxDelayedCoRoutineList = &xDelayedCoRoutineList1;
|
pxOverflowDelayedCoRoutineList = &xDelayedCoRoutineList2;
|
pxOverflowDelayedCoRoutineList = &xDelayedCoRoutineList2;
|
}
|
}
|
/*-----------------------------------------------------------*/
|
/*-----------------------------------------------------------*/
|
|
|
signed portBASE_TYPE xCoRoutineRemoveFromEventList( const xList *pxEventList )
|
signed portBASE_TYPE xCoRoutineRemoveFromEventList( const xList *pxEventList )
|
{
|
{
|
corCRCB *pxUnblockedCRCB;
|
corCRCB *pxUnblockedCRCB;
|
signed portBASE_TYPE xReturn;
|
signed portBASE_TYPE xReturn;
|
|
|
/* This function is called from within an interrupt. It can only access
|
/* This function is called from within an interrupt. It can only access
|
event lists and the pending ready list. */
|
event lists and the pending ready list. */
|
pxUnblockedCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxEventList );
|
pxUnblockedCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxEventList );
|
vListRemove( &( pxUnblockedCRCB->xEventListItem ) );
|
vListRemove( &( pxUnblockedCRCB->xEventListItem ) );
|
vListInsertEnd( ( xList * ) &( xPendingReadyList ), &( pxUnblockedCRCB->xEventListItem ) );
|
vListInsertEnd( ( xList * ) &( xPendingReadyList ), &( pxUnblockedCRCB->xEventListItem ) );
|
|
|
if( pxUnblockedCRCB->uxPriority >= pxCurrentCoRoutine->uxPriority )
|
if( pxUnblockedCRCB->uxPriority >= pxCurrentCoRoutine->uxPriority )
|
{
|
{
|
xReturn = pdTRUE;
|
xReturn = pdTRUE;
|
}
|
}
|
else
|
else
|
{
|
{
|
xReturn = pdFALSE;
|
xReturn = pdFALSE;
|
}
|
}
|
|
|
return xReturn;
|
return xReturn;
|
}
|
}
|
|
|
|
|
