/*\r
- FreeRTOS.org V4.0.4 - Copyright (C) 2003-2006 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
- See http://www.FreeRTOS.org for documentation, latest information, license\r
- and contact details. Please ensure to read the configuration and relevant\r
- port sections of the online documentation.\r
- ***************************************************************************\r
+ FreeRTOS V6.1.1 - Copyright (C) 2011 Real Time Engineers Ltd.\r
+\r
+ ***************************************************************************\r
+ * *\r
+ * If you are: *\r
+ * *\r
+ * + New to FreeRTOS, *\r
+ * + Wanting to learn FreeRTOS or multitasking in general quickly *\r
+ * + Looking for basic training, *\r
+ * + Wanting to improve your FreeRTOS skills and productivity *\r
+ * *\r
+ * then take a look at the FreeRTOS books - available as PDF or paperback *\r
+ * *\r
+ * "Using the FreeRTOS Real Time Kernel - a Practical Guide" *\r
+ * http://www.FreeRTOS.org/Documentation *\r
+ * *\r
+ * A pdf reference manual is also available. Both are usually delivered *\r
+ * to your inbox within 20 minutes to two hours when purchased between 8am *\r
+ * and 8pm GMT (although please allow up to 24 hours in case of *\r
+ * exceptional circumstances). Thank you for your support! *\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 exception to the GPL is included to allow you to distribute\r
+ a combined work that includes FreeRTOS without being obliged to provide the\r
+ source code for proprietary components outside of the FreeRTOS kernel.\r
+ FreeRTOS is distributed in the hope that it will be useful, but WITHOUT\r
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or\r
+ 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
-/*\r
-Changes from V1.2.0\r
-\r
- + Removed the volatile modifier from the function parameters. This was\r
- only ever included to prevent compiler warnings. Now warnings are\r
- removed by casting parameters where the calls are made.\r
-\r
- + prvListGetOwnerOfNextEntry() and prvListGetOwnerOfHeadEntry() have been\r
- removed from the c file and added as macros to the h file.\r
-\r
- + uxNumberOfItems has been added to the list structure. This removes the\r
- need for a pointer comparison when checking if a list is empty, and so\r
- is slightly faster.\r
-\r
- + Removed the NULL check in vListRemove(). This makes the call faster but\r
- necessitates any application code utilising the list implementation to\r
- ensure NULL pointers are not passed.\r
-\r
-Changes from V2.0.0\r
-\r
- + Double linked the lists to allow faster removal item removal.\r
-\r
-Changes from V2.6.1\r
-\r
- + Make use of the new portBASE_TYPE definition where ever appropriate.\r
-\r
-Changes from V3.0.0\r
-\r
- + API changes as described on the FreeRTOS.org WEB site.\r
-\r
-Changes from V3.2.4\r
-\r
- + Removed the pxHead member of the xList structure. This always pointed\r
- to the same place so has been removed to free a few bytes of RAM.\r
-\r
- + Introduced the xMiniListItem structure that does not include the \r
- xListItem members that are not required by the xListEnd member of a list.\r
- Again this was done to reduce RAM usage.\r
-\r
- + Changed the volatile definitions of some structure members to clean up\r
- the code where the list structures are used.\r
-*/\r
\r
#include <stdlib.h>\r
#include "FreeRTOS.h"\r
pxList->xListEnd.pxNext = ( xListItem * ) &( pxList->xListEnd );\r
pxList->xListEnd.pxPrevious = ( xListItem * ) &( pxList->xListEnd );\r
\r
- pxList->uxNumberOfItems = 0;\r
+ pxList->uxNumberOfItems = ( unsigned portBASE_TYPE ) 0U;\r
}\r
/*-----------------------------------------------------------*/\r
\r
/* If the list already contains a list item with the same item value then\r
the new list item should be placed after it. This ensures that TCB's which\r
are stored in ready lists (all of which have the same ulListItem value)\r
- get an equal share of the CPU. However, if the xItemValue is the same as \r
+ get an equal share of the CPU. However, if the xItemValue is the same as\r
the back marker the iteration loop below will not end. This means we need\r
- to guard against this by checking the value first and modifying the \r
+ to guard against this by checking the value first and modifying the\r
algorithm slightly if necessary. */\r
if( xValueOfInsertion == portMAX_DELAY )\r
{\r
- for( pxIterator = ( xListItem * ) &( pxList->xListEnd ); pxIterator->pxNext->xItemValue < xValueOfInsertion; pxIterator = pxIterator->pxNext )\r
- {\r
- /* There is nothing to do here, we are just iterating to the\r
- wanted insertion position. */\r
- }\r
+ pxIterator = pxList->xListEnd.pxPrevious;\r
}\r
else\r
{\r
+ /* *** NOTE ***********************************************************\r
+ If you find your application is crashing here then likely causes are:\r
+ 1) Stack overflow -\r
+ see http://www.freertos.org/Stacks-and-stack-overflow-checking.html\r
+ 2) Incorrect interrupt priority assignment, especially on Cortex-M3\r
+ parts where numerically high priority values denote low actual\r
+ interrupt priories, which can seem counter intuitive. See\r
+ configMAX_SYSCALL_INTERRUPT_PRIORITY on http://www.freertos.org/a00110.html\r
+ 3) Calling an API function from within a critical section or when\r
+ the scheduler is suspended.\r
+ 4) Using a queue or semaphore before it has been initialised or\r
+ before the scheduler has been started (are interrupts firing\r
+ before vTaskStartScheduler() has been called?).\r
+ See http://www.freertos.org/FAQHelp.html for more tips.\r
+ **********************************************************************/\r
+ \r
for( pxIterator = ( xListItem * ) &( pxList->xListEnd ); pxIterator->pxNext->xItemValue <= xValueOfInsertion; pxIterator = pxIterator->pxNext )\r
{\r
/* There is nothing to do here, we are just iterating to the\r
projects / freertos / blobdiff