]> git.sur5r.net Git - freertos/blobdiff - Source/croutine.c
Revert the CM0 port layer exception handler names to the traditional FreeRTOS names...
[freertos] / Source / croutine.c
index a330e32917431f57d1175cf4800195bb23ee5be6..168974eb64597eadc2c9effb42c8c7f9a3395091 100644 (file)
@@ -1,67 +1,81 @@
 /*\r
-       FreeRTOS.org V4.8.0 - Copyright (C) 2003-2008 Richard Barry.\r
-\r
-       This file is part of the FreeRTOS.org distribution.\r
-\r
-       FreeRTOS.org is free software; you can redistribute it and/or modify\r
-       it under the terms of the GNU General Public License as published by\r
-       the Free Software Foundation; either version 2 of the License, or\r
-       (at your option) any later version.\r
-\r
-       FreeRTOS.org is distributed in the hope that it will be useful,\r
-       but WITHOUT ANY WARRANTY; without even the implied warranty of\r
-       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
-       GNU General Public License for more details.\r
-\r
-       You should have received a copy of the GNU General Public License\r
-       along with FreeRTOS.org; if not, write to the Free Software\r
-       Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA\r
-\r
-       A special exception to the GPL can be applied should you wish to distribute\r
-       a combined work that includes FreeRTOS.org, without being obliged to provide\r
-       the source code for any proprietary components.  See the licensing section\r
-       of http://www.FreeRTOS.org for full details of how and when the exception\r
-       can be applied.\r
-\r
-       ***************************************************************************\r
-       ***************************************************************************\r
-       *                                                                                                                                                 *\r
-       * SAVE TIME AND MONEY!  Why not get us to quote to get FreeRTOS.org               *\r
-       * running on your hardware - or even write all or part of your application*\r
-       * for you?  See http://www.OpenRTOS.com for details.                                      *\r
-       *                                                                                                                                                 *\r
-       ***************************************************************************\r
-       ***************************************************************************\r
-\r
-       Please ensure to read the configuration and relevant port sections of the\r
-       online documentation.\r
-\r
-       http://www.FreeRTOS.org - Documentation, latest information, license and \r
-       contact details.\r
-\r
-       http://www.SafeRTOS.com - A version that is certified for use in safety \r
-       critical systems.\r
-\r
-       http://www.OpenRTOS.com - Commercial support, development, porting, \r
-       licensing and training services.\r
+    FreeRTOS V7.1.0 - Copyright (C) 2011 Real Time Engineers Ltd.\r
+\r
+\r
+    ***************************************************************************\r
+     *                                                                       *\r
+     *    FreeRTOS tutorial books are available in pdf and paperback.        *\r
+     *    Complete, revised, and edited pdf reference manuals are also       *\r
+     *    available.                                                         *\r
+     *                                                                       *\r
+     *    Purchasing FreeRTOS documentation will not only help you, by       *\r
+     *    ensuring you get running as quickly as possible and with an        *\r
+     *    in-depth knowledge of how to use FreeRTOS, it will also help       *\r
+     *    the FreeRTOS project to continue with its mission of providing     *\r
+     *    professional grade, cross platform, de facto standard solutions    *\r
+     *    for microcontrollers - completely free of charge!                  *\r
+     *                                                                       *\r
+     *    >>> See http://www.FreeRTOS.org/Documentation for details. <<<     *\r
+     *                                                                       *\r
+     *    Thank you for using FreeRTOS, and thank you for your support!      *\r
+     *                                                                       *\r
+    ***************************************************************************\r
+\r
+\r
+    This file is part of the FreeRTOS distribution.\r
+\r
+    FreeRTOS is free software; you can redistribute it and/or modify it under\r
+    the terms of the GNU General Public License (version 2) as published by the\r
+    Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
+    >>>NOTE<<< The modification to the GPL is included to allow you to\r
+    distribute a combined work that includes FreeRTOS without being obliged to\r
+    provide the source code for proprietary components outside of the FreeRTOS\r
+    kernel.  FreeRTOS is distributed in the hope that it will be useful, but\r
+    WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\r
+    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
+    more details. You should have received a copy of the GNU General Public\r
+    License and the FreeRTOS license exception along with FreeRTOS; if not it\r
+    can be viewed here: http://www.freertos.org/a00114.html and also obtained\r
+    by writing to Richard Barry, contact details for whom are available on the\r
+    FreeRTOS WEB site.\r
+\r
+    1 tab == 4 spaces!\r
+\r
+    http://www.FreeRTOS.org - Documentation, latest information, license and\r
+    contact details.\r
+\r
+    http://www.SafeRTOS.com - A version that is certified for use in safety\r
+    critical systems.\r
+\r
+    http://www.OpenRTOS.com - Commercial support, development, porting,\r
+    licensing and training services.\r
 */\r
 \r
 #include "FreeRTOS.h"\r
 #include "task.h"\r
 #include "croutine.h"\r
 \r
+/*\r
+ * Some kernel aware debuggers require data to be viewed to be global, rather\r
+ * than file scope.\r
+ */\r
+#ifdef portREMOVE_STATIC_QUALIFIER\r
+       #define static\r
+#endif\r
+\r
+\r
 /* Lists for ready and blocked co-routines. --------------------*/\r
 static xList pxReadyCoRoutineLists[ configMAX_CO_ROUTINE_PRIORITIES ]; /*< Prioritised ready co-routines. */\r
 static xList xDelayedCoRoutineList1;                                                                   /*< Delayed co-routines. */\r
 static xList xDelayedCoRoutineList2;                                                                   /*< Delayed co-routines (two lists are used - one for delays that have overflowed the current tick count. */\r
 static xList * pxDelayedCoRoutineList;                                                                 /*< Points to the delayed co-routine list currently being used. */\r
 static xList * pxOverflowDelayedCoRoutineList;                                                 /*< Points to the delayed co-routine list currently being used to hold co-routines that have overflowed the current tick count. */\r
-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. */\r
+static xList 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. */\r
 \r
 /* Other file private variables. --------------------------------*/\r
 corCRCB * pxCurrentCoRoutine = NULL;\r
 static unsigned portBASE_TYPE uxTopCoRoutineReadyPriority = 0;\r
-static portTickType xCoRoutineTickCount = 0;\r
+static portTickType xCoRoutineTickCount = 0, xLastTickCount = 0, xPassedTicks = 0;\r
 \r
 /* The initial state of the co-routine when it is created. */\r
 #define corINITIAL_STATE       ( 0 )\r
@@ -94,7 +108,7 @@ static void prvInitialiseCoRoutineLists( void );
  * in the pending ready list in order that they can later be moved to the ready\r
  * list by the co-routine scheduler.\r
  */\r
-static inline void prvCheckPendingReadyList( void );\r
+static void prvCheckPendingReadyList( void );\r
 \r
 /*\r
  * Macro that looks at the list of co-routines that are currently delayed to\r
@@ -104,7 +118,7 @@ static inline void prvCheckPendingReadyList( void );
  * meaning once one co-routine has been found whose timer has not expired\r
  * we need not look any further down the list.\r
  */\r
-static inline void prvCheckDelayedList( void );\r
+static void prvCheckDelayedList( void );\r
 \r
 /*-----------------------------------------------------------*/\r
 \r
@@ -203,19 +217,19 @@ portTickType xTimeToWake;
 }\r
 /*-----------------------------------------------------------*/\r
 \r
-static inline void prvCheckPendingReadyList( void )\r
+static void prvCheckPendingReadyList( void )\r
 {\r
        /* Are there any co-routines waiting to get moved to the ready list?  These\r
        are co-routines that have been readied by an ISR.  The ISR cannot access\r
        the     ready lists itself. */\r
-       while( !listLIST_IS_EMPTY( &xPendingReadyList ) )\r
+       while( listLIST_IS_EMPTY( &xPendingReadyCoRoutineList ) == pdFALSE )\r
        {\r
                corCRCB *pxUnblockedCRCB;\r
 \r
                /* The pending ready list can be accessed by an ISR. */\r
                portDISABLE_INTERRUPTS();\r
                {       \r
-                       pxUnblockedCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( (&xPendingReadyList) );                    \r
+                       pxUnblockedCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( (&xPendingReadyCoRoutineList) );                   \r
                        vListRemove( &( pxUnblockedCRCB->xEventListItem ) );\r
                }\r
                portENABLE_INTERRUPTS();\r
@@ -226,9 +240,8 @@ static inline void prvCheckPendingReadyList( void )
 }\r
 /*-----------------------------------------------------------*/\r
 \r
-static inline void prvCheckDelayedList( void )\r
+static void prvCheckDelayedList( void )\r
 {\r
-static portTickType xLastTickCount, xPassedTicks;\r
 corCRCB *pxCRCB;\r
 \r
        xPassedTicks = xTaskGetTickCount() - xLastTickCount;\r
@@ -250,8 +263,10 @@ corCRCB *pxCRCB;
                }\r
 \r
                /* See if this tick has made a timeout expire. */\r
-               while( ( pxCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxDelayedCoRoutineList ) ) != NULL )\r
-               {       \r
+               while( listLIST_IS_EMPTY( pxDelayedCoRoutineList ) == pdFALSE )\r
+               {\r
+                       pxCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxDelayedCoRoutineList );\r
+\r
                        if( xCoRoutineTickCount < listGET_LIST_ITEM_VALUE( &( pxCRCB->xGenericListItem ) ) )                            \r
                        {                       \r
                                /* Timeout not yet expired. */                                                                                                                                                  \r
@@ -324,7 +339,7 @@ unsigned portBASE_TYPE uxPriority;
 \r
        vListInitialise( ( xList * ) &xDelayedCoRoutineList1 );\r
        vListInitialise( ( xList * ) &xDelayedCoRoutineList2 );\r
-       vListInitialise( ( xList * ) &xPendingReadyList );\r
+       vListInitialise( ( xList * ) &xPendingReadyCoRoutineList );\r
 \r
        /* Start with pxDelayedCoRoutineList using list1 and the\r
        pxOverflowDelayedCoRoutineList using list2. */\r
@@ -339,10 +354,11 @@ corCRCB *pxUnblockedCRCB;
 signed portBASE_TYPE xReturn;\r
 \r
        /* This function is called from within an interrupt.  It can only access\r
-       event lists and the pending ready list. */\r
+       event lists and the pending ready list.  This function assumes that a\r
+       check has already been made to ensure pxEventList is not empty. */\r
        pxUnblockedCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxEventList );\r
        vListRemove( &( pxUnblockedCRCB->xEventListItem ) );\r
-       vListInsertEnd( ( xList * ) &( xPendingReadyList ), &( pxUnblockedCRCB->xEventListItem ) );\r
+       vListInsertEnd( ( xList * ) &( xPendingReadyCoRoutineList ), &( pxUnblockedCRCB->xEventListItem ) );\r
 \r
        if( pxUnblockedCRCB->uxPriority >= pxCurrentCoRoutine->uxPriority )\r
        {\r