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Diffstat (limited to 'cc3200/FreeRTOS/Source/croutine.c')
| -rw-r--r-- | cc3200/FreeRTOS/Source/croutine.c | 395 |
1 files changed, 0 insertions, 395 deletions
diff --git a/cc3200/FreeRTOS/Source/croutine.c b/cc3200/FreeRTOS/Source/croutine.c deleted file mode 100644 index 993e09b29e..0000000000 --- a/cc3200/FreeRTOS/Source/croutine.c +++ /dev/null @@ -1,395 +0,0 @@ -/* - FreeRTOS V9.0.0 - Copyright (C) 2016 Real Time Engineers Ltd. - All rights reserved - - VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. - - This file is part of the FreeRTOS distribution. - - FreeRTOS is free software; you can redistribute it and/or modify it under - the terms of the GNU General Public License (version 2) as published by the - Free Software Foundation >>>> AND MODIFIED BY <<<< the FreeRTOS exception. - - *************************************************************************** - >>! NOTE: The modification to the GPL is included to allow you to !<< - >>! distribute a combined work that includes FreeRTOS without being !<< - >>! obliged to provide the source code for proprietary components !<< - >>! outside of the FreeRTOS kernel. !<< - *************************************************************************** - - FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS - FOR A PARTICULAR PURPOSE. Full license text is available on the following - link: http://www.freertos.org/a00114.html - - *************************************************************************** - * * - * FreeRTOS provides completely free yet professionally developed, * - * robust, strictly quality controlled, supported, and cross * - * platform software that is more than just the market leader, it * - * is the industry's de facto standard. * - * * - * Help yourself get started quickly while simultaneously helping * - * to support the FreeRTOS project by purchasing a FreeRTOS * - * tutorial book, reference manual, or both: * - * http://www.FreeRTOS.org/Documentation * - * * - *************************************************************************** - - http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading - the FAQ page "My application does not run, what could be wrong?". Have you - defined configASSERT()? - - http://www.FreeRTOS.org/support - In return for receiving this top quality - embedded software for free we request you assist our global community by - participating in the support forum. - - http://www.FreeRTOS.org/training - Investing in training allows your team to - be as productive as possible as early as possible. Now you can receive - FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers - Ltd, and the world's leading authority on the world's leading RTOS. - - http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, - including FreeRTOS+Trace - an indispensable productivity tool, a DOS - compatible FAT file system, and our tiny thread aware UDP/IP stack. - - http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate. - Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS. - - http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High - Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS - licenses offer ticketed support, indemnification and commercial middleware. - - http://www.SafeRTOS.com - High Integrity Systems also provide a safety - engineered and independently SIL3 certified version for use in safety and - mission critical applications that require provable dependability. - - 1 tab == 4 spaces! -*/ - -#include "FreeRTOS.h" -#include "task.h" -#include "croutine.h" - -/* Remove the whole file is co-routines are not being used. */ -#if( configUSE_CO_ROUTINES != 0 ) - -/* - * Some kernel aware debuggers require data to be viewed to be global, rather - * than file scope. - */ -#ifdef portREMOVE_STATIC_QUALIFIER - #define static -#endif - - -/* Lists for ready and blocked co-routines. --------------------*/ -static List_t pxReadyCoRoutineLists[ configMAX_CO_ROUTINE_PRIORITIES ]; /*< Prioritised ready co-routines. */ -static List_t xDelayedCoRoutineList1; /*< Delayed co-routines. */ -static List_t xDelayedCoRoutineList2; /*< Delayed co-routines (two lists are used - one for delays that have overflowed the current tick count. */ -static List_t * pxDelayedCoRoutineList; /*< Points to the delayed co-routine list currently being used. */ -static List_t * pxOverflowDelayedCoRoutineList; /*< Points to the delayed co-routine list currently being used to hold co-routines that have overflowed the current tick count. */ -static List_t xPendingReadyCoRoutineList; /*< 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. */ - -/* Other file private variables. --------------------------------*/ -CRCB_t * pxCurrentCoRoutine = NULL; -static UBaseType_t uxTopCoRoutineReadyPriority = 0; -static TickType_t xCoRoutineTickCount = 0, xLastTickCount = 0, xPassedTicks = 0; - -/* The initial state of the co-routine when it is created. */ -#define corINITIAL_STATE ( 0 ) - -/* - * Place the co-routine represented by pxCRCB into the appropriate ready queue - * for the priority. It is inserted at the end of the list. - * - * This macro accesses the co-routine ready lists and therefore must not be - * used from within an ISR. - */ -#define prvAddCoRoutineToReadyQueue( pxCRCB ) \ -{ \ - if( pxCRCB->uxPriority > uxTopCoRoutineReadyPriority ) \ - { \ - uxTopCoRoutineReadyPriority = pxCRCB->uxPriority; \ - } \ - vListInsertEnd( ( List_t * ) &( pxReadyCoRoutineLists[ pxCRCB->uxPriority ] ), &( pxCRCB->xGenericListItem ) ); \ -} - -/* - * Utility to ready all the lists used by the scheduler. This is called - * automatically upon the creation of the first co-routine. - */ -static void prvInitialiseCoRoutineLists( void ); - -/* - * 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 - * in the pending ready list in order that they can later be moved to the ready - * list by the co-routine scheduler. - */ -static void prvCheckPendingReadyList( void ); - -/* - * Macro that looks at the list of co-routines that are currently delayed to - * see if any require waking. - * - * 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 - * we need not look any further down the list. - */ -static void prvCheckDelayedList( void ); - -/*-----------------------------------------------------------*/ - -BaseType_t xCoRoutineCreate( crCOROUTINE_CODE pxCoRoutineCode, UBaseType_t uxPriority, UBaseType_t uxIndex ) -{ -BaseType_t xReturn; -CRCB_t *pxCoRoutine; - - /* Allocate the memory that will store the co-routine control block. */ - pxCoRoutine = ( CRCB_t * ) pvPortMalloc( sizeof( CRCB_t ) ); - if( pxCoRoutine ) - { - /* If pxCurrentCoRoutine is NULL then this is the first co-routine to - be created and the co-routine data structures need initialising. */ - if( pxCurrentCoRoutine == NULL ) - { - pxCurrentCoRoutine = pxCoRoutine; - prvInitialiseCoRoutineLists(); - } - - /* Check the priority is within limits. */ - if( uxPriority >= configMAX_CO_ROUTINE_PRIORITIES ) - { - uxPriority = configMAX_CO_ROUTINE_PRIORITIES - 1; - } - - /* Fill out the co-routine control block from the function parameters. */ - pxCoRoutine->uxState = corINITIAL_STATE; - pxCoRoutine->uxPriority = uxPriority; - pxCoRoutine->uxIndex = uxIndex; - pxCoRoutine->pxCoRoutineFunction = pxCoRoutineCode; - - /* Initialise all the other co-routine control block parameters. */ - vListInitialiseItem( &( pxCoRoutine->xGenericListItem ) ); - vListInitialiseItem( &( pxCoRoutine->xEventListItem ) ); - - /* Set the co-routine control block as a link back from the ListItem_t. - This is so we can get back to the containing CRCB from a generic item - in a list. */ - listSET_LIST_ITEM_OWNER( &( pxCoRoutine->xGenericListItem ), pxCoRoutine ); - listSET_LIST_ITEM_OWNER( &( pxCoRoutine->xEventListItem ), pxCoRoutine ); - - /* Event lists are always in priority order. */ - listSET_LIST_ITEM_VALUE( &( pxCoRoutine->xEventListItem ), ( ( TickType_t ) configMAX_CO_ROUTINE_PRIORITIES - ( TickType_t ) uxPriority ) ); - - /* Now the co-routine has been initialised it can be added to the ready - list at the correct priority. */ - prvAddCoRoutineToReadyQueue( pxCoRoutine ); - - xReturn = pdPASS; - } - else - { - xReturn = errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY; - } - - return xReturn; -} -/*-----------------------------------------------------------*/ - -void vCoRoutineAddToDelayedList( TickType_t xTicksToDelay, List_t *pxEventList ) -{ -TickType_t xTimeToWake; - - /* Calculate the time to wake - this may overflow but this is - not a problem. */ - xTimeToWake = xCoRoutineTickCount + xTicksToDelay; - - /* We must remove ourselves from the ready list before adding - ourselves to the blocked list as the same list item is used for - both lists. */ - ( void ) uxListRemove( ( ListItem_t * ) &( pxCurrentCoRoutine->xGenericListItem ) ); - - /* The list item will be inserted in wake time order. */ - listSET_LIST_ITEM_VALUE( &( pxCurrentCoRoutine->xGenericListItem ), xTimeToWake ); - - if( xTimeToWake < xCoRoutineTickCount ) - { - /* Wake time has overflowed. Place this item in the - overflow list. */ - vListInsert( ( List_t * ) pxOverflowDelayedCoRoutineList, ( ListItem_t * ) &( pxCurrentCoRoutine->xGenericListItem ) ); - } - else - { - /* The wake time has not overflowed, so we can use the - current block list. */ - vListInsert( ( List_t * ) pxDelayedCoRoutineList, ( ListItem_t * ) &( pxCurrentCoRoutine->xGenericListItem ) ); - } - - if( pxEventList ) - { - /* Also add the co-routine to an event list. If this is done then the - function must be called with interrupts disabled. */ - vListInsert( pxEventList, &( pxCurrentCoRoutine->xEventListItem ) ); - } -} -/*-----------------------------------------------------------*/ - -static void prvCheckPendingReadyList( void ) -{ - /* 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 - the ready lists itself. */ - while( listLIST_IS_EMPTY( &xPendingReadyCoRoutineList ) == pdFALSE ) - { - CRCB_t *pxUnblockedCRCB; - - /* The pending ready list can be accessed by an ISR. */ - portDISABLE_INTERRUPTS(); - { - pxUnblockedCRCB = ( CRCB_t * ) listGET_OWNER_OF_HEAD_ENTRY( (&xPendingReadyCoRoutineList) ); - ( void ) uxListRemove( &( pxUnblockedCRCB->xEventListItem ) ); - } - portENABLE_INTERRUPTS(); - - ( void ) uxListRemove( &( pxUnblockedCRCB->xGenericListItem ) ); - prvAddCoRoutineToReadyQueue( pxUnblockedCRCB ); - } -} -/*-----------------------------------------------------------*/ - -static void prvCheckDelayedList( void ) -{ -CRCB_t *pxCRCB; - - xPassedTicks = xTaskGetTickCount() - xLastTickCount; - while( xPassedTicks ) - { - xCoRoutineTickCount++; - xPassedTicks--; - - /* If the tick count has overflowed we need to swap the ready lists. */ - if( xCoRoutineTickCount == 0 ) - { - List_t * pxTemp; - - /* 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! */ - pxTemp = pxDelayedCoRoutineList; - pxDelayedCoRoutineList = pxOverflowDelayedCoRoutineList; - pxOverflowDelayedCoRoutineList = pxTemp; - } - - /* See if this tick has made a timeout expire. */ - while( listLIST_IS_EMPTY( pxDelayedCoRoutineList ) == pdFALSE ) - { - pxCRCB = ( CRCB_t * ) listGET_OWNER_OF_HEAD_ENTRY( pxDelayedCoRoutineList ); - - if( xCoRoutineTickCount < listGET_LIST_ITEM_VALUE( &( pxCRCB->xGenericListItem ) ) ) - { - /* Timeout not yet expired. */ - break; - } - - portDISABLE_INTERRUPTS(); - { - /* The event could have occurred just before this critical - section. If this is the case then the generic list item will - have been moved to the pending ready list and the following - line is still valid. Also the pvContainer parameter will have - been set to NULL so the following lines are also valid. */ - ( void ) uxListRemove( &( pxCRCB->xGenericListItem ) ); - - /* Is the co-routine waiting on an event also? */ - if( pxCRCB->xEventListItem.pvContainer ) - { - ( void ) uxListRemove( &( pxCRCB->xEventListItem ) ); - } - } - portENABLE_INTERRUPTS(); - - prvAddCoRoutineToReadyQueue( pxCRCB ); - } - } - - xLastTickCount = xCoRoutineTickCount; -} -/*-----------------------------------------------------------*/ - -void vCoRoutineSchedule( void ) -{ - /* See if any co-routines readied by events need moving to the ready lists. */ - prvCheckPendingReadyList(); - - /* See if any delayed co-routines have timed out. */ - prvCheckDelayedList(); - - /* Find the highest priority queue that contains ready co-routines. */ - while( listLIST_IS_EMPTY( &( pxReadyCoRoutineLists[ uxTopCoRoutineReadyPriority ] ) ) ) - { - if( uxTopCoRoutineReadyPriority == 0 ) - { - /* No more co-routines to check. */ - return; - } - --uxTopCoRoutineReadyPriority; - } - - /* 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. */ - listGET_OWNER_OF_NEXT_ENTRY( pxCurrentCoRoutine, &( pxReadyCoRoutineLists[ uxTopCoRoutineReadyPriority ] ) ); - - /* Call the co-routine. */ - ( pxCurrentCoRoutine->pxCoRoutineFunction )( pxCurrentCoRoutine, pxCurrentCoRoutine->uxIndex ); - - return; -} -/*-----------------------------------------------------------*/ - -static void prvInitialiseCoRoutineLists( void ) -{ -UBaseType_t uxPriority; - - for( uxPriority = 0; uxPriority < configMAX_CO_ROUTINE_PRIORITIES; uxPriority++ ) - { - vListInitialise( ( List_t * ) &( pxReadyCoRoutineLists[ uxPriority ] ) ); - } - - vListInitialise( ( List_t * ) &xDelayedCoRoutineList1 ); - vListInitialise( ( List_t * ) &xDelayedCoRoutineList2 ); - vListInitialise( ( List_t * ) &xPendingReadyCoRoutineList ); - - /* Start with pxDelayedCoRoutineList using list1 and the - pxOverflowDelayedCoRoutineList using list2. */ - pxDelayedCoRoutineList = &xDelayedCoRoutineList1; - pxOverflowDelayedCoRoutineList = &xDelayedCoRoutineList2; -} -/*-----------------------------------------------------------*/ - -BaseType_t xCoRoutineRemoveFromEventList( const List_t *pxEventList ) -{ -CRCB_t *pxUnblockedCRCB; -BaseType_t xReturn; - - /* This function is called from within an interrupt. It can only access - event lists and the pending ready list. This function assumes that a - check has already been made to ensure pxEventList is not empty. */ - pxUnblockedCRCB = ( CRCB_t * ) listGET_OWNER_OF_HEAD_ENTRY( pxEventList ); - ( void ) uxListRemove( &( pxUnblockedCRCB->xEventListItem ) ); - vListInsertEnd( ( List_t * ) &( xPendingReadyCoRoutineList ), &( pxUnblockedCRCB->xEventListItem ) ); - - if( pxUnblockedCRCB->uxPriority >= pxCurrentCoRoutine->uxPriority ) - { - xReturn = pdTRUE; - } - else - { - xReturn = pdFALSE; - } - - return xReturn; -} - -#endif /* configUSE_CO_ROUTINES == 0 */ - |