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@@ -1,2755 +0,0 @@
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-/*
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- FreeRTOS V7.3.0 - Copyright (C) 2012 Real Time Engineers Ltd.
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-
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- FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT
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- http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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-
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- ***************************************************************************
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- * *
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- * FreeRTOS tutorial books are available in pdf and paperback. *
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- * Complete, revised, and edited pdf reference manuals are also *
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- * available. *
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- * *
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- * Purchasing FreeRTOS documentation will not only help you, by *
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- * ensuring you get running as quickly as possible and with an *
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- * in-depth knowledge of how to use FreeRTOS, it will also help *
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- * the FreeRTOS project to continue with its mission of providing *
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- * professional grade, cross platform, de facto standard solutions *
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- * for microcontrollers - completely free of charge! *
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- * *
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- * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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- * *
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- * Thank you for using FreeRTOS, and thank you for your support! *
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- * *
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- ***************************************************************************
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-
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-
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- This file is part of the FreeRTOS distribution.
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-
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- FreeRTOS is free software; you can redistribute it and/or modify it under
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- the terms of the GNU General Public License (version 2) as published by the
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- Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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- >>>NOTE<<< The modification to the GPL is included to allow you to
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- distribute a combined work that includes FreeRTOS without being obliged to
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- provide the source code for proprietary components outside of the FreeRTOS
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- kernel. FreeRTOS is distributed in the hope that it will be useful, but
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- WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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- more details. You should have received a copy of the GNU General Public
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- License and the FreeRTOS license exception along with FreeRTOS; if not it
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- can be viewed here: http://www.freertos.org/a00114.html and also obtained
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- by writing to Richard Barry, contact details for whom are available on the
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- FreeRTOS WEB site.
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-
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- 1 tab == 4 spaces!
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-
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- ***************************************************************************
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- * *
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- * Having a problem? Start by reading the FAQ "My application does *
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- * not run, what could be wrong?" *
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- * *
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- * http://www.FreeRTOS.org/FAQHelp.html *
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- * *
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- ***************************************************************************
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-
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-
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- http://www.FreeRTOS.org - Documentation, training, latest versions, license
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- and contact details.
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-
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- http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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- including FreeRTOS+Trace - an indispensable productivity tool.
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-
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- Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
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- the code with commercial support, indemnification, and middleware, under
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- the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
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- provide a safety engineered and independently SIL3 certified version under
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- the SafeRTOS brand: http://www.SafeRTOS.com.
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-*/
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-
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-/* Standard includes. */
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-#include <stdio.h>
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-#include <stdlib.h>
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-#include <string.h>
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-
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-/* Defining MPU_WRAPPERS_INCLUDED_FROM_API_FILE prevents task.h from redefining
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-all the API functions to use the MPU wrappers. That should only be done when
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-task.h is included from an application file. */
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-#define MPU_WRAPPERS_INCLUDED_FROM_API_FILE
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-
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-/* FreeRTOS includes. */
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-#include "FreeRTOS.h"
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-#include "task.h"
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-#include "timers.h"
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-#include "StackMacros.h"
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-
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-#undef MPU_WRAPPERS_INCLUDED_FROM_API_FILE
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-
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-/*
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- * Defines the size, in words, of the stack allocated to the idle task.
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- */
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-#define tskIDLE_STACK_SIZE configMINIMAL_STACK_SIZE
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-
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-/*
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- * Task control block. A task control block (TCB) is allocated for each task,
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- * and stores task state information, including a pointer to the task's context
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- * (the task's run time environment, including register values)
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- */
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-typedef struct tskTaskControlBlock
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-{
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- volatile portSTACK_TYPE *pxTopOfStack; /*< Points to the location of the last item placed on the tasks stack. THIS MUST BE THE FIRST MEMBER OF THE TCB STRUCT. */
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-
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- #if ( portUSING_MPU_WRAPPERS == 1 )
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- xMPU_SETTINGS xMPUSettings; /*< The MPU settings are defined as part of the port layer. THIS MUST BE THE SECOND MEMBER OF THE TCB STRUCT. */
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- #endif
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-
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- xListItem xGenericListItem; /*< The list that the state list item of a task is reference from denotes the state of that task (Ready, Blocked, Suspended ). */
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- xListItem xEventListItem; /*< Used to reference a task from an event list. */
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- unsigned portBASE_TYPE uxPriority; /*< The priority of the task. 0 is the lowest priority. */
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- portSTACK_TYPE *pxStack; /*< Points to the start of the stack. */
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- signed char pcTaskName[ configMAX_TASK_NAME_LEN ];/*< Descriptive name given to the task when created. Facilitates debugging only. */
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-
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- #if ( portSTACK_GROWTH > 0 )
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- portSTACK_TYPE *pxEndOfStack; /*< Points to the end of the stack on architectures where the stack grows up from low memory. */
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- #endif
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-
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- #if ( portCRITICAL_NESTING_IN_TCB == 1 )
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- unsigned portBASE_TYPE uxCriticalNesting; /*< Holds the critical section nesting depth for ports that do not maintain their own count in the port layer. */
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- #endif
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-
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- #if ( configUSE_TRACE_FACILITY == 1 )
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- unsigned portBASE_TYPE uxTCBNumber; /*< Stores a number that increments each time a TCB is created. It allows debuggers to determine when a task has been deleted and then recreated. */
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- unsigned portBASE_TYPE uxTaskNumber; /*< Stores a number specifically for use by third party trace code. */
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- #endif
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-
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- #if ( configUSE_MUTEXES == 1 )
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- unsigned portBASE_TYPE uxBasePriority; /*< The priority last assigned to the task - used by the priority inheritance mechanism. */
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- #endif
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-
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- #if ( configUSE_APPLICATION_TASK_TAG == 1 )
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- pdTASK_HOOK_CODE pxTaskTag;
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- #endif
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-
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- #if ( configGENERATE_RUN_TIME_STATS == 1 )
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- unsigned long ulRunTimeCounter; /*< Stores the amount of time the task has spent in the Running state. */
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- #endif
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-
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-} tskTCB;
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-
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-
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-/*
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- * Some kernel aware debuggers require the data the debugger needs access to to
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- * be global, rather than file scope.
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- */
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-#ifdef portREMOVE_STATIC_QUALIFIER
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- #define static
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-#endif
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-
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-/*lint -e956 */
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-PRIVILEGED_DATA tskTCB * volatile pxCurrentTCB = NULL;
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-
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-/* Lists for ready and blocked tasks. --------------------*/
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-PRIVILEGED_DATA static xList pxReadyTasksLists[ configMAX_PRIORITIES ]; /*< Prioritised ready tasks. */
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-PRIVILEGED_DATA static xList xDelayedTaskList1; /*< Delayed tasks. */
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-PRIVILEGED_DATA static xList xDelayedTaskList2; /*< Delayed tasks (two lists are used - one for delays that have overflowed the current tick count. */
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-PRIVILEGED_DATA static xList * volatile pxDelayedTaskList ; /*< Points to the delayed task list currently being used. */
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-PRIVILEGED_DATA static xList * volatile pxOverflowDelayedTaskList; /*< Points to the delayed task list currently being used to hold tasks that have overflowed the current tick count. */
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-PRIVILEGED_DATA static xList xPendingReadyList; /*< Tasks that have been readied while the scheduler was suspended. They will be moved to the ready queue when the scheduler is resumed. */
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-
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-#if ( INCLUDE_vTaskDelete == 1 )
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-
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- PRIVILEGED_DATA static xList xTasksWaitingTermination; /*< Tasks that have been deleted - but the their memory not yet freed. */
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- PRIVILEGED_DATA static volatile unsigned portBASE_TYPE uxTasksDeleted = ( unsigned portBASE_TYPE ) 0U;
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-
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-#endif
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-
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-#if ( INCLUDE_vTaskSuspend == 1 )
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-
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- PRIVILEGED_DATA static xList xSuspendedTaskList; /*< Tasks that are currently suspended. */
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-
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-#endif
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-
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-#if ( INCLUDE_xTaskGetIdleTaskHandle == 1 )
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-
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- PRIVILEGED_DATA static xTaskHandle xIdleTaskHandle = NULL; /*< Holds the handle of the idle task. The idle task is created automatically when the scheduler is started. */
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-
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-#endif
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-
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-/* File private variables. --------------------------------*/
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-PRIVILEGED_DATA static volatile unsigned portBASE_TYPE uxCurrentNumberOfTasks = ( unsigned portBASE_TYPE ) 0U;
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-PRIVILEGED_DATA static volatile portTickType xTickCount = ( portTickType ) 0U;
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-PRIVILEGED_DATA static unsigned portBASE_TYPE uxTopUsedPriority = tskIDLE_PRIORITY;
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-PRIVILEGED_DATA static volatile unsigned portBASE_TYPE uxTopReadyPriority = tskIDLE_PRIORITY;
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-PRIVILEGED_DATA static volatile signed portBASE_TYPE xSchedulerRunning = pdFALSE;
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-PRIVILEGED_DATA static volatile unsigned portBASE_TYPE uxSchedulerSuspended = ( unsigned portBASE_TYPE ) pdFALSE;
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-PRIVILEGED_DATA static volatile unsigned portBASE_TYPE uxMissedTicks = ( unsigned portBASE_TYPE ) 0U;
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-PRIVILEGED_DATA static volatile portBASE_TYPE xMissedYield = ( portBASE_TYPE ) pdFALSE;
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-PRIVILEGED_DATA static volatile portBASE_TYPE xNumOfOverflows = ( portBASE_TYPE ) 0;
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-PRIVILEGED_DATA static unsigned portBASE_TYPE uxTaskNumber = ( unsigned portBASE_TYPE ) 0U;
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-PRIVILEGED_DATA static volatile portTickType xNextTaskUnblockTime = ( portTickType ) portMAX_DELAY;
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-
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-#if ( configGENERATE_RUN_TIME_STATS == 1 )
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-
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- PRIVILEGED_DATA static char pcStatsString[ 50 ] ;
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- PRIVILEGED_DATA static unsigned long ulTaskSwitchedInTime = 0UL; /*< Holds the value of a timer/counter the last time a task was switched in. */
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- static void prvGenerateRunTimeStatsForTasksInList( const signed char *pcWriteBuffer, xList *pxList, unsigned long ulTotalRunTime ) PRIVILEGED_FUNCTION;
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-
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-#endif
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-
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-/* Debugging and trace facilities private variables and macros. ------------*/
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-
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-/*
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- * The value used to fill the stack of a task when the task is created. This
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- * is used purely for checking the high water mark for tasks.
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- */
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-#define tskSTACK_FILL_BYTE ( 0xa5U )
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-
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-/*
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- * Macros used by vListTask to indicate which state a task is in.
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- */
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-#define tskBLOCKED_CHAR ( ( signed char ) 'B' )
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-#define tskREADY_CHAR ( ( signed char ) 'R' )
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-#define tskDELETED_CHAR ( ( signed char ) 'D' )
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-#define tskSUSPENDED_CHAR ( ( signed char ) 'S' )
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-
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-/*-----------------------------------------------------------*/
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-
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-#if configUSE_PORT_OPTIMISED_TASK_SELECTION == 0
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-
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- /* If configUSE_PORT_OPTIMISED_TASK_SELECTION is 0 then task selection is
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- performed in a generic way that is not optimised to any particular
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- microcontroller architecture. */
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-
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- /* uxTopReadyPriority holds the priority of the highest priority ready
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- state task. */
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- #define taskRECORD_READY_PRIORITY( uxPriority ) \
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- { \
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- if( ( uxPriority ) > uxTopReadyPriority ) \
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- { \
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- uxTopReadyPriority = ( uxPriority ); \
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- } \
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- } /* taskRECORD_READY_PRIORITY */
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-
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- /*-----------------------------------------------------------*/
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-
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- #define taskSELECT_HIGHEST_PRIORITY_TASK() \
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- { \
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- /* Find the highest priority queue that contains ready tasks. */ \
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- while( listLIST_IS_EMPTY( &( pxReadyTasksLists[ uxTopReadyPriority ] ) ) ) \
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- { \
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- configASSERT( uxTopReadyPriority ); \
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- --uxTopReadyPriority; \
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- } \
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- \
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- /* listGET_OWNER_OF_NEXT_ENTRY indexes through the list, so the tasks of \
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- the same priority get an equal share of the processor time. */ \
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- listGET_OWNER_OF_NEXT_ENTRY( pxCurrentTCB, &( pxReadyTasksLists[ uxTopReadyPriority ] ) ); \
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- } /* taskSELECT_HIGHEST_PRIORITY_TASK */
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-
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- /*-----------------------------------------------------------*/
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-
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- /* Define away taskRESET_READY_PRIORITY() and portRESET_READY_PRIORITY() as
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- they are only required when a port optimised method of task selection is
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- being used. */
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- #define taskRESET_READY_PRIORITY( uxPriority )
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- #define portRESET_READY_PRIORITY( uxPriority, uxTopReadyPriority )
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-
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-#else /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
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-
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- /* If configUSE_PORT_OPTIMISED_TASK_SELECTION is 1 then task selection is
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- performed in a way that is tailored to the particular microcontroller
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- architecture being used. */
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-
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- /* A port optimised version is provided. Call the port defined macros. */
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- #define taskRECORD_READY_PRIORITY( uxPriority ) portRECORD_READY_PRIORITY( uxPriority, uxTopReadyPriority )
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-
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- /*-----------------------------------------------------------*/
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-
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- #define taskSELECT_HIGHEST_PRIORITY_TASK() \
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- { \
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- unsigned portBASE_TYPE uxTopPriority; \
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- \
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- /* Find the highest priority queue that contains ready tasks. */ \
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- portGET_HIGHEST_PRIORITY( uxTopPriority, uxTopReadyPriority ); \
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- configASSERT( listCURRENT_LIST_LENGTH( &( pxReadyTasksLists[ uxTopPriority ] ) ) > 0 ); \
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- listGET_OWNER_OF_NEXT_ENTRY( pxCurrentTCB, &( pxReadyTasksLists[ uxTopPriority ] ) ); \
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- } /* taskSELECT_HIGHEST_PRIORITY_TASK() */
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-
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- /*-----------------------------------------------------------*/
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-
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- /* A port optimised version is provided, call it only if the TCB being reset
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- is being referenced from a ready list. If it is referenced from a delayed
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- or suspended list then it won't be in a ready list. */
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- #define taskRESET_READY_PRIORITY( uxPriority ) \
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- { \
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- if( listCURRENT_LIST_LENGTH( &( pxReadyTasksLists[ ( uxPriority ) ] ) ) == 0 ) \
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- { \
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- portRESET_READY_PRIORITY( ( uxPriority ), ( uxTopReadyPriority ) ); \
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- } \
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- }
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-
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-#endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
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-
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-/*
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- * Place the task represented by pxTCB into the appropriate ready queue for
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- * the task. It is inserted at the end of the list. One quirk of this is
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- * that if the task being inserted is at the same priority as the currently
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- * executing task, then it will only be rescheduled after the currently
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- * executing task has been rescheduled.
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- */
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-#define prvAddTaskToReadyQueue( pxTCB ) \
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- traceMOVED_TASK_TO_READY_STATE( pxTCB ) \
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- taskRECORD_READY_PRIORITY( ( pxTCB )->uxPriority ); \
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- vListInsertEnd( ( xList * ) &( pxReadyTasksLists[ ( pxTCB )->uxPriority ] ), &( ( pxTCB )->xGenericListItem ) )
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-/*-----------------------------------------------------------*/
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-
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-/*
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- * Macro that looks at the list of tasks that are currently delayed to see if
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- * any require waking.
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- *
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- * Tasks are stored in the queue in the order of their wake time - meaning
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- * once one tasks has been found whose timer has not expired we need not look
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- * any further down the list.
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- */
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-#define prvCheckDelayedTasks() \
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-{ \
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-portTickType xItemValue; \
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- \
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- /* Is the tick count greater than or equal to the wake time of the first \
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- task referenced from the delayed tasks list? */ \
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- if( xTickCount >= xNextTaskUnblockTime ) \
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- { \
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- for( ;; ) \
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- { \
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- if( listLIST_IS_EMPTY( pxDelayedTaskList ) != pdFALSE ) \
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- { \
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- /* The delayed list is empty. Set xNextTaskUnblockTime to the \
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- maximum possible value so it is extremely unlikely that the \
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- if( xTickCount >= xNextTaskUnblockTime ) test will pass next \
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- time through. */ \
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- xNextTaskUnblockTime = portMAX_DELAY; \
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- break; \
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- } \
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- else \
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- { \
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- /* The delayed list is not empty, get the value of the item at \
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- the head of the delayed list. This is the time at which the \
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- task at the head of the delayed list should be removed from \
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- the Blocked state. */ \
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- pxTCB = ( tskTCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxDelayedTaskList ); \
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- xItemValue = listGET_LIST_ITEM_VALUE( &( pxTCB->xGenericListItem ) ); \
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- \
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- if( xTickCount < xItemValue ) \
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- { \
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- /* It is not time to unblock this item yet, but the item \
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- value is the time at which the task at the head of the \
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- blocked list should be removed from the Blocked state - \
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- so record the item value in xNextTaskUnblockTime. */ \
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- xNextTaskUnblockTime = xItemValue; \
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- break; \
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- } \
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|
- \
|
|
|
- /* It is time to remove the item from the Blocked state. */ \
|
|
|
- uxListRemove( &( pxTCB->xGenericListItem ) ); \
|
|
|
- \
|
|
|
- /* Is the task waiting on an event also? */ \
|
|
|
- if( pxTCB->xEventListItem.pvContainer != NULL ) \
|
|
|
- { \
|
|
|
- uxListRemove( &( pxTCB->xEventListItem ) ); \
|
|
|
- } \
|
|
|
- prvAddTaskToReadyQueue( pxTCB ); \
|
|
|
- } \
|
|
|
- } \
|
|
|
- } \
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-/*
|
|
|
- * Several functions take an xTaskHandle parameter that can optionally be NULL,
|
|
|
- * where NULL is used to indicate that the handle of the currently executing
|
|
|
- * task should be used in place of the parameter. This macro simply checks to
|
|
|
- * see if the parameter is NULL and returns a pointer to the appropriate TCB.
|
|
|
- */
|
|
|
-#define prvGetTCBFromHandle( pxHandle ) ( ( ( pxHandle ) == NULL ) ? ( tskTCB * ) pxCurrentTCB : ( tskTCB * ) ( pxHandle ) )
|
|
|
-
|
|
|
-/* Callback function prototypes. --------------------------*/
|
|
|
-extern void vApplicationStackOverflowHook( xTaskHandle pxTask, signed char *pcTaskName );
|
|
|
-extern void vApplicationTickHook( void );
|
|
|
-
|
|
|
-/* File private functions. --------------------------------*/
|
|
|
-
|
|
|
-/*
|
|
|
- * Utility to ready a TCB for a given task. Mainly just copies the parameters
|
|
|
- * into the TCB structure.
|
|
|
- */
|
|
|
-static void prvInitialiseTCBVariables( tskTCB *pxTCB, const signed char * const pcName, unsigned portBASE_TYPE uxPriority, const xMemoryRegion * const xRegions, unsigned short usStackDepth ) PRIVILEGED_FUNCTION;
|
|
|
-
|
|
|
-/*
|
|
|
- * Utility to ready all the lists used by the scheduler. This is called
|
|
|
- * automatically upon the creation of the first task.
|
|
|
- */
|
|
|
-static void prvInitialiseTaskLists( void ) PRIVILEGED_FUNCTION;
|
|
|
-
|
|
|
-/*
|
|
|
- * The idle task, which as all tasks is implemented as a never ending loop.
|
|
|
- * The idle task is automatically created and added to the ready lists upon
|
|
|
- * creation of the first user task.
|
|
|
- *
|
|
|
- * The portTASK_FUNCTION_PROTO() macro is used to allow port/compiler specific
|
|
|
- * language extensions. The equivalent prototype for this function is:
|
|
|
- *
|
|
|
- * void prvIdleTask( void *pvParameters );
|
|
|
- *
|
|
|
- */
|
|
|
-static portTASK_FUNCTION_PROTO( prvIdleTask, pvParameters );
|
|
|
-
|
|
|
-/*
|
|
|
- * Utility to free all memory allocated by the scheduler to hold a TCB,
|
|
|
- * including the stack pointed to by the TCB.
|
|
|
- *
|
|
|
- * This does not free memory allocated by the task itself (i.e. memory
|
|
|
- * allocated by calls to pvPortMalloc from within the tasks application code).
|
|
|
- */
|
|
|
-#if ( INCLUDE_vTaskDelete == 1 )
|
|
|
-
|
|
|
- static void prvDeleteTCB( tskTCB *pxTCB ) PRIVILEGED_FUNCTION;
|
|
|
-
|
|
|
-#endif
|
|
|
-
|
|
|
-/*
|
|
|
- * Used only by the idle task. This checks to see if anything has been placed
|
|
|
- * in the list of tasks waiting to be deleted. If so the task is cleaned up
|
|
|
- * and its TCB deleted.
|
|
|
- */
|
|
|
-static void prvCheckTasksWaitingTermination( void ) PRIVILEGED_FUNCTION;
|
|
|
-
|
|
|
-/*
|
|
|
- * The currently executing task is entering the Blocked state. Add the task to
|
|
|
- * either the current or the overflow delayed task list.
|
|
|
- */
|
|
|
-static void prvAddCurrentTaskToDelayedList( portTickType xTimeToWake ) PRIVILEGED_FUNCTION;
|
|
|
-
|
|
|
-/*
|
|
|
- * Allocates memory from the heap for a TCB and associated stack. Checks the
|
|
|
- * allocation was successful.
|
|
|
- */
|
|
|
-static tskTCB *prvAllocateTCBAndStack( unsigned short usStackDepth, portSTACK_TYPE *puxStackBuffer ) PRIVILEGED_FUNCTION;
|
|
|
-
|
|
|
-/*
|
|
|
- * Called from vTaskList. vListTasks details all the tasks currently under
|
|
|
- * control of the scheduler. The tasks may be in one of a number of lists.
|
|
|
- * prvListTaskWithinSingleList accepts a list and details the tasks from
|
|
|
- * within just that list.
|
|
|
- *
|
|
|
- * THIS FUNCTION IS INTENDED FOR DEBUGGING ONLY, AND SHOULD NOT BE CALLED FROM
|
|
|
- * NORMAL APPLICATION CODE.
|
|
|
- */
|
|
|
-#if ( configUSE_TRACE_FACILITY == 1 )
|
|
|
-
|
|
|
- static void prvListTaskWithinSingleList( const signed char *pcWriteBuffer, xList *pxList, signed char cStatus ) PRIVILEGED_FUNCTION;
|
|
|
-
|
|
|
-#endif
|
|
|
-
|
|
|
-/*
|
|
|
- * When a task is created, the stack of the task is filled with a known value.
|
|
|
- * This function determines the 'high water mark' of the task stack by
|
|
|
- * determining how much of the stack remains at the original preset value.
|
|
|
- */
|
|
|
-#if ( ( configUSE_TRACE_FACILITY == 1 ) || ( INCLUDE_uxTaskGetStackHighWaterMark == 1 ) )
|
|
|
-
|
|
|
- static unsigned short usTaskCheckFreeStackSpace( const unsigned char * pucStackByte ) PRIVILEGED_FUNCTION;
|
|
|
-
|
|
|
-#endif
|
|
|
-
|
|
|
-/*
|
|
|
- * Return the amount of time, in ticks, that will pass before the kernel will
|
|
|
- * next move a task from the Blocked state to the Running state.
|
|
|
- *
|
|
|
- * This conditional compilation should use inequality to 0, not equality to 1.
|
|
|
- * This is to ensure portSUPPRESS_TICKS_AND_SLEEP() can be called when user
|
|
|
- * defined low power mode implementations require configUSE_TICKLESS_IDLE to be
|
|
|
- * set to a value other than 1.
|
|
|
- */
|
|
|
-#if ( configUSE_TICKLESS_IDLE != 0 )
|
|
|
-
|
|
|
- static portTickType prvGetExpectedIdleTime( void ) PRIVILEGED_FUNCTION;
|
|
|
-
|
|
|
-#endif
|
|
|
-
|
|
|
-/*lint +e956 */
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-/*-----------------------------------------------------------
|
|
|
- * TASK CREATION API documented in task.h
|
|
|
- *----------------------------------------------------------*/
|
|
|
-
|
|
|
-signed portBASE_TYPE xTaskGenericCreate( pdTASK_CODE pxTaskCode, const signed char * const pcName, unsigned short usStackDepth, void *pvParameters, unsigned portBASE_TYPE uxPriority, xTaskHandle *pxCreatedTask, portSTACK_TYPE *puxStackBuffer, const xMemoryRegion * const xRegions )
|
|
|
-{
|
|
|
-signed portBASE_TYPE xReturn;
|
|
|
-tskTCB * pxNewTCB;
|
|
|
-
|
|
|
- configASSERT( pxTaskCode );
|
|
|
- configASSERT( ( ( uxPriority & ( ~portPRIVILEGE_BIT ) ) < configMAX_PRIORITIES ) );
|
|
|
-
|
|
|
- /* Allocate the memory required by the TCB and stack for the new task,
|
|
|
- checking that the allocation was successful. */
|
|
|
- pxNewTCB = prvAllocateTCBAndStack( usStackDepth, puxStackBuffer );
|
|
|
-
|
|
|
- if( pxNewTCB != NULL )
|
|
|
- {
|
|
|
- portSTACK_TYPE *pxTopOfStack;
|
|
|
-
|
|
|
- #if( portUSING_MPU_WRAPPERS == 1 )
|
|
|
- /* Should the task be created in privileged mode? */
|
|
|
- portBASE_TYPE xRunPrivileged;
|
|
|
- if( ( uxPriority & portPRIVILEGE_BIT ) != 0U )
|
|
|
- {
|
|
|
- xRunPrivileged = pdTRUE;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- xRunPrivileged = pdFALSE;
|
|
|
- }
|
|
|
- uxPriority &= ~portPRIVILEGE_BIT;
|
|
|
- #endif /* portUSING_MPU_WRAPPERS == 1 */
|
|
|
-
|
|
|
- /* Calculate the top of stack address. This depends on whether the
|
|
|
- stack grows from high memory to low (as per the 80x86) or visa versa.
|
|
|
- portSTACK_GROWTH is used to make the result positive or negative as
|
|
|
- required by the port. */
|
|
|
- #if( portSTACK_GROWTH < 0 )
|
|
|
- {
|
|
|
- pxTopOfStack = pxNewTCB->pxStack + ( usStackDepth - ( unsigned short ) 1 );
|
|
|
- pxTopOfStack = ( portSTACK_TYPE * ) ( ( ( portPOINTER_SIZE_TYPE ) pxTopOfStack ) & ( ( portPOINTER_SIZE_TYPE ) ~portBYTE_ALIGNMENT_MASK ) );
|
|
|
-
|
|
|
- /* Check the alignment of the calculated top of stack is correct. */
|
|
|
- configASSERT( ( ( ( unsigned long ) pxTopOfStack & ( unsigned long ) portBYTE_ALIGNMENT_MASK ) == 0UL ) );
|
|
|
- }
|
|
|
- #else
|
|
|
- {
|
|
|
- pxTopOfStack = pxNewTCB->pxStack;
|
|
|
-
|
|
|
- /* Check the alignment of the stack buffer is correct. */
|
|
|
- configASSERT( ( ( ( unsigned long ) pxNewTCB->pxStack & ( unsigned long ) portBYTE_ALIGNMENT_MASK ) == 0UL ) );
|
|
|
-
|
|
|
- /* If we want to use stack checking on architectures that use
|
|
|
- a positive stack growth direction then we also need to store the
|
|
|
- other extreme of the stack space. */
|
|
|
- pxNewTCB->pxEndOfStack = pxNewTCB->pxStack + ( usStackDepth - 1 );
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- /* Setup the newly allocated TCB with the initial state of the task. */
|
|
|
- prvInitialiseTCBVariables( pxNewTCB, pcName, uxPriority, xRegions, usStackDepth );
|
|
|
-
|
|
|
- /* Initialize the TCB stack to look as if the task was already running,
|
|
|
- but had been interrupted by the scheduler. The return address is set
|
|
|
- to the start of the task function. Once the stack has been initialised
|
|
|
- the top of stack variable is updated. */
|
|
|
- #if( portUSING_MPU_WRAPPERS == 1 )
|
|
|
- {
|
|
|
- pxNewTCB->pxTopOfStack = pxPortInitialiseStack( pxTopOfStack, pxTaskCode, pvParameters, xRunPrivileged );
|
|
|
- }
|
|
|
- #else
|
|
|
- {
|
|
|
- pxNewTCB->pxTopOfStack = pxPortInitialiseStack( pxTopOfStack, pxTaskCode, pvParameters );
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- /* Check the alignment of the initialised stack. */
|
|
|
- portALIGNMENT_ASSERT_pxCurrentTCB( ( ( ( unsigned long ) pxNewTCB->pxTopOfStack & ( unsigned long ) portBYTE_ALIGNMENT_MASK ) == 0UL ) );
|
|
|
-
|
|
|
- if( ( void * ) pxCreatedTask != NULL )
|
|
|
- {
|
|
|
- /* Pass the TCB out - in an anonymous way. The calling function/
|
|
|
- task can use this as a handle to delete the task later if
|
|
|
- required.*/
|
|
|
- *pxCreatedTask = ( xTaskHandle ) pxNewTCB;
|
|
|
- }
|
|
|
-
|
|
|
- /* We are going to manipulate the task queues to add this task to a
|
|
|
- ready list, so must make sure no interrupts occur. */
|
|
|
- taskENTER_CRITICAL();
|
|
|
- {
|
|
|
- uxCurrentNumberOfTasks++;
|
|
|
- if( pxCurrentTCB == NULL )
|
|
|
- {
|
|
|
- /* There are no other tasks, or all the other tasks are in
|
|
|
- the suspended state - make this the current task. */
|
|
|
- pxCurrentTCB = pxNewTCB;
|
|
|
-
|
|
|
- if( uxCurrentNumberOfTasks == ( unsigned portBASE_TYPE ) 1 )
|
|
|
- {
|
|
|
- /* This is the first task to be created so do the preliminary
|
|
|
- initialisation required. We will not recover if this call
|
|
|
- fails, but we will report the failure. */
|
|
|
- prvInitialiseTaskLists();
|
|
|
- }
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* If the scheduler is not already running, make this task the
|
|
|
- current task if it is the highest priority task to be created
|
|
|
- so far. */
|
|
|
- if( xSchedulerRunning == pdFALSE )
|
|
|
- {
|
|
|
- if( pxCurrentTCB->uxPriority <= uxPriority )
|
|
|
- {
|
|
|
- pxCurrentTCB = pxNewTCB;
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /* Remember the top priority to make context switching faster. Use
|
|
|
- the priority in pxNewTCB as this has been capped to a valid value. */
|
|
|
- if( pxNewTCB->uxPriority > uxTopUsedPriority )
|
|
|
- {
|
|
|
- uxTopUsedPriority = pxNewTCB->uxPriority;
|
|
|
- }
|
|
|
-
|
|
|
- #if ( configUSE_TRACE_FACILITY == 1 )
|
|
|
- {
|
|
|
- /* Add a counter into the TCB for tracing only. */
|
|
|
- pxNewTCB->uxTCBNumber = uxTaskNumber;
|
|
|
- }
|
|
|
- #endif
|
|
|
- uxTaskNumber++;
|
|
|
-
|
|
|
- prvAddTaskToReadyQueue( pxNewTCB );
|
|
|
-
|
|
|
- xReturn = pdPASS;
|
|
|
- portSETUP_TCB( pxNewTCB );
|
|
|
- traceTASK_CREATE( pxNewTCB );
|
|
|
- }
|
|
|
- taskEXIT_CRITICAL();
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- xReturn = errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY;
|
|
|
- traceTASK_CREATE_FAILED();
|
|
|
- }
|
|
|
-
|
|
|
- if( xReturn == pdPASS )
|
|
|
- {
|
|
|
- if( xSchedulerRunning != pdFALSE )
|
|
|
- {
|
|
|
- /* If the created task is of a higher priority than the current task
|
|
|
- then it should run now. */
|
|
|
- if( pxCurrentTCB->uxPriority < uxPriority )
|
|
|
- {
|
|
|
- portYIELD_WITHIN_API();
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return xReturn;
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( INCLUDE_vTaskDelete == 1 )
|
|
|
-
|
|
|
- void vTaskDelete( xTaskHandle pxTaskToDelete )
|
|
|
- {
|
|
|
- tskTCB *pxTCB;
|
|
|
-
|
|
|
- taskENTER_CRITICAL();
|
|
|
- {
|
|
|
- /* Ensure a yield is performed if the current task is being
|
|
|
- deleted. */
|
|
|
- if( pxTaskToDelete == pxCurrentTCB )
|
|
|
- {
|
|
|
- pxTaskToDelete = NULL;
|
|
|
- }
|
|
|
-
|
|
|
- /* If null is passed in here then we are deleting ourselves. */
|
|
|
- pxTCB = prvGetTCBFromHandle( pxTaskToDelete );
|
|
|
-
|
|
|
- /* Remove task from the ready list and place in the termination list.
|
|
|
- This will stop the task from be scheduled. The idle task will check
|
|
|
- the termination list and free up any memory allocated by the
|
|
|
- scheduler for the TCB and stack. */
|
|
|
- if( uxListRemove( ( xListItem * ) &( pxTCB->xGenericListItem ) ) == 0 )
|
|
|
- {
|
|
|
- taskRESET_READY_PRIORITY( pxTCB->uxPriority );
|
|
|
- }
|
|
|
-
|
|
|
- /* Is the task waiting on an event also? */
|
|
|
- if( pxTCB->xEventListItem.pvContainer != NULL )
|
|
|
- {
|
|
|
- uxListRemove( &( pxTCB->xEventListItem ) );
|
|
|
- }
|
|
|
-
|
|
|
- vListInsertEnd( ( xList * ) &xTasksWaitingTermination, &( pxTCB->xGenericListItem ) );
|
|
|
-
|
|
|
- /* Increment the ucTasksDeleted variable so the idle task knows
|
|
|
- there is a task that has been deleted and that it should therefore
|
|
|
- check the xTasksWaitingTermination list. */
|
|
|
- ++uxTasksDeleted;
|
|
|
-
|
|
|
- /* Increment the uxTaskNumberVariable also so kernel aware debuggers
|
|
|
- can detect that the task lists need re-generating. */
|
|
|
- uxTaskNumber++;
|
|
|
-
|
|
|
- traceTASK_DELETE( pxTCB );
|
|
|
- }
|
|
|
- taskEXIT_CRITICAL();
|
|
|
-
|
|
|
- /* Force a reschedule if we have just deleted the current task. */
|
|
|
- if( xSchedulerRunning != pdFALSE )
|
|
|
- {
|
|
|
- if( ( void * ) pxTaskToDelete == NULL )
|
|
|
- {
|
|
|
- portYIELD_WITHIN_API();
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-/*-----------------------------------------------------------
|
|
|
- * TASK CONTROL API documented in task.h
|
|
|
- *----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( INCLUDE_vTaskDelayUntil == 1 )
|
|
|
-
|
|
|
- void vTaskDelayUntil( portTickType * const pxPreviousWakeTime, portTickType xTimeIncrement )
|
|
|
- {
|
|
|
- portTickType xTimeToWake;
|
|
|
- portBASE_TYPE xAlreadyYielded, xShouldDelay = pdFALSE;
|
|
|
-
|
|
|
- configASSERT( pxPreviousWakeTime );
|
|
|
- configASSERT( ( xTimeIncrement > 0U ) );
|
|
|
-
|
|
|
- vTaskSuspendAll();
|
|
|
- {
|
|
|
- /* Generate the tick time at which the task wants to wake. */
|
|
|
- xTimeToWake = *pxPreviousWakeTime + xTimeIncrement;
|
|
|
-
|
|
|
- if( xTickCount < *pxPreviousWakeTime )
|
|
|
- {
|
|
|
- /* The tick count has overflowed since this function was
|
|
|
- lasted called. In this case the only time we should ever
|
|
|
- actually delay is if the wake time has also overflowed,
|
|
|
- and the wake time is greater than the tick time. When this
|
|
|
- is the case it is as if neither time had overflowed. */
|
|
|
- if( ( xTimeToWake < *pxPreviousWakeTime ) && ( xTimeToWake > xTickCount ) )
|
|
|
- {
|
|
|
- xShouldDelay = pdTRUE;
|
|
|
- }
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* The tick time has not overflowed. In this case we will
|
|
|
- delay if either the wake time has overflowed, and/or the
|
|
|
- tick time is less than the wake time. */
|
|
|
- if( ( xTimeToWake < *pxPreviousWakeTime ) || ( xTimeToWake > xTickCount ) )
|
|
|
- {
|
|
|
- xShouldDelay = pdTRUE;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /* Update the wake time ready for the next call. */
|
|
|
- *pxPreviousWakeTime = xTimeToWake;
|
|
|
-
|
|
|
- if( xShouldDelay != pdFALSE )
|
|
|
- {
|
|
|
- traceTASK_DELAY_UNTIL();
|
|
|
-
|
|
|
- /* 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. */
|
|
|
- if( uxListRemove( ( xListItem * ) &( pxCurrentTCB->xGenericListItem ) ) == 0 )
|
|
|
- {
|
|
|
- /* The current task must be in a ready list, so there is
|
|
|
- no need to check, and the port reset macro can be called
|
|
|
- directly. */
|
|
|
- portRESET_READY_PRIORITY( pxCurrentTCB->uxPriority, uxTopReadyPriority );
|
|
|
- }
|
|
|
-
|
|
|
- prvAddCurrentTaskToDelayedList( xTimeToWake );
|
|
|
- }
|
|
|
- }
|
|
|
- xAlreadyYielded = xTaskResumeAll();
|
|
|
-
|
|
|
- /* Force a reschedule if xTaskResumeAll has not already done so, we may
|
|
|
- have put ourselves to sleep. */
|
|
|
- if( xAlreadyYielded == pdFALSE )
|
|
|
- {
|
|
|
- portYIELD_WITHIN_API();
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( INCLUDE_vTaskDelay == 1 )
|
|
|
-
|
|
|
- void vTaskDelay( portTickType xTicksToDelay )
|
|
|
- {
|
|
|
- portTickType xTimeToWake;
|
|
|
- signed portBASE_TYPE xAlreadyYielded = pdFALSE;
|
|
|
-
|
|
|
- /* A delay time of zero just forces a reschedule. */
|
|
|
- if( xTicksToDelay > ( portTickType ) 0U )
|
|
|
- {
|
|
|
- vTaskSuspendAll();
|
|
|
- {
|
|
|
- traceTASK_DELAY();
|
|
|
-
|
|
|
- /* A task that is removed from the event list while the
|
|
|
- scheduler is suspended will not get placed in the ready
|
|
|
- list or removed from the blocked list until the scheduler
|
|
|
- is resumed.
|
|
|
-
|
|
|
- This task cannot be in an event list as it is the currently
|
|
|
- executing task. */
|
|
|
-
|
|
|
- /* Calculate the time to wake - this may overflow but this is
|
|
|
- not a problem. */
|
|
|
- xTimeToWake = xTickCount + 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. */
|
|
|
- if( uxListRemove( ( xListItem * ) &( pxCurrentTCB->xGenericListItem ) ) == 0 )
|
|
|
- {
|
|
|
- /* The current task must be in a ready list, so there is
|
|
|
- no need to check, and the port reset macro can be called
|
|
|
- directly. */
|
|
|
- portRESET_READY_PRIORITY( pxCurrentTCB->uxPriority, uxTopReadyPriority );
|
|
|
- }
|
|
|
- prvAddCurrentTaskToDelayedList( xTimeToWake );
|
|
|
- }
|
|
|
- xAlreadyYielded = xTaskResumeAll();
|
|
|
- }
|
|
|
-
|
|
|
- /* Force a reschedule if xTaskResumeAll has not already done so, we may
|
|
|
- have put ourselves to sleep. */
|
|
|
- if( xAlreadyYielded == pdFALSE )
|
|
|
- {
|
|
|
- portYIELD_WITHIN_API();
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( INCLUDE_eTaskStateGet == 1 )
|
|
|
-
|
|
|
- eTaskState eTaskStateGet( xTaskHandle pxTask )
|
|
|
- {
|
|
|
- eTaskState eReturn;
|
|
|
- xList *pxStateList;
|
|
|
- tskTCB *pxTCB;
|
|
|
-
|
|
|
- pxTCB = ( tskTCB * ) pxTask;
|
|
|
-
|
|
|
- if( pxTCB == pxCurrentTCB )
|
|
|
- {
|
|
|
- /* The task calling this function is querying its own state. */
|
|
|
- eReturn = eRunning;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- taskENTER_CRITICAL();
|
|
|
- {
|
|
|
- pxStateList = ( xList * ) listLIST_ITEM_CONTAINER( &( pxTCB->xGenericListItem ) );
|
|
|
- }
|
|
|
- taskEXIT_CRITICAL();
|
|
|
-
|
|
|
- if( ( pxStateList == pxDelayedTaskList ) || ( pxStateList == pxOverflowDelayedTaskList ) )
|
|
|
- {
|
|
|
- /* The task being queried is referenced from one of the Blocked
|
|
|
- lists. */
|
|
|
- eReturn = eBlocked;
|
|
|
- }
|
|
|
-
|
|
|
- #if ( INCLUDE_vTaskSuspend == 1 )
|
|
|
- else if( pxStateList == &xSuspendedTaskList )
|
|
|
- {
|
|
|
- /* The task being queried is referenced from the suspended
|
|
|
- list. */
|
|
|
- eReturn = eSuspended;
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- #if ( INCLUDE_vTaskDelete == 1 )
|
|
|
- else if( pxStateList == &xTasksWaitingTermination )
|
|
|
- {
|
|
|
- /* The task being queried is referenced from the deleted
|
|
|
- tasks list. */
|
|
|
- eReturn = eDeleted;
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- else
|
|
|
- {
|
|
|
- /* If the task is not in any other state, it must be in the
|
|
|
- Ready (including pending ready) state. */
|
|
|
- eReturn = eReady;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return eReturn;
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( INCLUDE_uxTaskPriorityGet == 1 )
|
|
|
-
|
|
|
- unsigned portBASE_TYPE uxTaskPriorityGet( xTaskHandle pxTask )
|
|
|
- {
|
|
|
- tskTCB *pxTCB;
|
|
|
- unsigned portBASE_TYPE uxReturn;
|
|
|
-
|
|
|
- taskENTER_CRITICAL();
|
|
|
- {
|
|
|
- /* If null is passed in here then we are changing the
|
|
|
- priority of the calling function. */
|
|
|
- pxTCB = prvGetTCBFromHandle( pxTask );
|
|
|
- uxReturn = pxTCB->uxPriority;
|
|
|
- }
|
|
|
- taskEXIT_CRITICAL();
|
|
|
-
|
|
|
- return uxReturn;
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( INCLUDE_vTaskPrioritySet == 1 )
|
|
|
-
|
|
|
- void vTaskPrioritySet( xTaskHandle pxTask, unsigned portBASE_TYPE uxNewPriority )
|
|
|
- {
|
|
|
- tskTCB *pxTCB;
|
|
|
- unsigned portBASE_TYPE uxCurrentPriority, uxPriorityUsedOnEntry;
|
|
|
- portBASE_TYPE xYieldRequired = pdFALSE;
|
|
|
-
|
|
|
- configASSERT( ( uxNewPriority < configMAX_PRIORITIES ) );
|
|
|
-
|
|
|
- /* Ensure the new priority is valid. */
|
|
|
- if( uxNewPriority >= configMAX_PRIORITIES )
|
|
|
- {
|
|
|
- uxNewPriority = configMAX_PRIORITIES - ( unsigned portBASE_TYPE ) 1U;
|
|
|
- }
|
|
|
-
|
|
|
- taskENTER_CRITICAL();
|
|
|
- {
|
|
|
- if( pxTask == pxCurrentTCB )
|
|
|
- {
|
|
|
- pxTask = NULL;
|
|
|
- }
|
|
|
-
|
|
|
- /* If null is passed in here then we are changing the
|
|
|
- priority of the calling function. */
|
|
|
- pxTCB = prvGetTCBFromHandle( pxTask );
|
|
|
-
|
|
|
- traceTASK_PRIORITY_SET( pxTCB, uxNewPriority );
|
|
|
-
|
|
|
- #if ( configUSE_MUTEXES == 1 )
|
|
|
- {
|
|
|
- uxCurrentPriority = pxTCB->uxBasePriority;
|
|
|
- }
|
|
|
- #else
|
|
|
- {
|
|
|
- uxCurrentPriority = pxTCB->uxPriority;
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- if( uxCurrentPriority != uxNewPriority )
|
|
|
- {
|
|
|
- /* The priority change may have readied a task of higher
|
|
|
- priority than the calling task. */
|
|
|
- if( uxNewPriority > uxCurrentPriority )
|
|
|
- {
|
|
|
- if( pxTask != NULL )
|
|
|
- {
|
|
|
- /* The priority of another task is being raised. If we
|
|
|
- were raising the priority of the currently running task
|
|
|
- there would be no need to switch as it must have already
|
|
|
- been the highest priority task. */
|
|
|
- xYieldRequired = pdTRUE;
|
|
|
- }
|
|
|
- }
|
|
|
- else if( pxTask == NULL )
|
|
|
- {
|
|
|
- /* Setting our own priority down means there may now be another
|
|
|
- task of higher priority that is ready to execute. */
|
|
|
- xYieldRequired = pdTRUE;
|
|
|
- }
|
|
|
-
|
|
|
- /* Remember the ready list the task might be referenced from
|
|
|
- before its uxPriority member is changed so the
|
|
|
- taskRESET_READY_PRIORITY() macro can function correctly. */
|
|
|
- uxPriorityUsedOnEntry = pxTCB->uxPriority;
|
|
|
-
|
|
|
- #if ( configUSE_MUTEXES == 1 )
|
|
|
- {
|
|
|
- /* Only change the priority being used if the task is not
|
|
|
- currently using an inherited priority. */
|
|
|
- if( pxTCB->uxBasePriority == pxTCB->uxPriority )
|
|
|
- {
|
|
|
- pxTCB->uxPriority = uxNewPriority;
|
|
|
- }
|
|
|
-
|
|
|
- /* The base priority gets set whatever. */
|
|
|
- pxTCB->uxBasePriority = uxNewPriority;
|
|
|
- }
|
|
|
- #else
|
|
|
- {
|
|
|
- pxTCB->uxPriority = uxNewPriority;
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- listSET_LIST_ITEM_VALUE( &( pxTCB->xEventListItem ), ( configMAX_PRIORITIES - ( portTickType ) uxNewPriority ) );
|
|
|
-
|
|
|
- /* If the task is in the blocked or suspended list we need do
|
|
|
- nothing more than change it's priority variable. However, if
|
|
|
- the task is in a ready list it needs to be removed and placed
|
|
|
- in the queue appropriate to its new priority. */
|
|
|
- if( listIS_CONTAINED_WITHIN( &( pxReadyTasksLists[ uxCurrentPriority ] ), &( pxTCB->xGenericListItem ) ) )
|
|
|
- {
|
|
|
- /* The task is currently in its ready list - remove before adding
|
|
|
- it to it's new ready list. As we are in a critical section we
|
|
|
- can do this even if the scheduler is suspended. */
|
|
|
- if( uxListRemove( ( xListItem * ) &( pxTCB->xGenericListItem ) ) == 0 )
|
|
|
- {
|
|
|
- taskRESET_READY_PRIORITY( uxPriorityUsedOnEntry );
|
|
|
- }
|
|
|
- prvAddTaskToReadyQueue( pxTCB );
|
|
|
- }
|
|
|
-
|
|
|
- if( xYieldRequired == pdTRUE )
|
|
|
- {
|
|
|
- portYIELD_WITHIN_API();
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- taskEXIT_CRITICAL();
|
|
|
-
|
|
|
- /* Remove compiler warning about unused parameter when the port
|
|
|
- optimised task selection is not being used. */
|
|
|
- ( void ) uxPriorityUsedOnEntry;
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( INCLUDE_vTaskSuspend == 1 )
|
|
|
-
|
|
|
- void vTaskSuspend( xTaskHandle pxTaskToSuspend )
|
|
|
- {
|
|
|
- tskTCB *pxTCB;
|
|
|
-
|
|
|
- taskENTER_CRITICAL();
|
|
|
- {
|
|
|
- /* Ensure a yield is performed if the current task is being
|
|
|
- suspended. */
|
|
|
- if( pxTaskToSuspend == pxCurrentTCB )
|
|
|
- {
|
|
|
- pxTaskToSuspend = NULL;
|
|
|
- }
|
|
|
-
|
|
|
- /* If null is passed in here then we are suspending ourselves. */
|
|
|
- pxTCB = prvGetTCBFromHandle( pxTaskToSuspend );
|
|
|
-
|
|
|
- traceTASK_SUSPEND( pxTCB );
|
|
|
-
|
|
|
- /* Remove task from the ready/delayed list and place in the suspended list. */
|
|
|
- if( uxListRemove( ( xListItem * ) &( pxTCB->xGenericListItem ) ) == 0 )
|
|
|
- {
|
|
|
- taskRESET_READY_PRIORITY( pxTCB->uxPriority );
|
|
|
- }
|
|
|
-
|
|
|
- /* Is the task waiting on an event also? */
|
|
|
- if( pxTCB->xEventListItem.pvContainer != NULL )
|
|
|
- {
|
|
|
- uxListRemove( &( pxTCB->xEventListItem ) );
|
|
|
- }
|
|
|
-
|
|
|
- vListInsertEnd( ( xList * ) &xSuspendedTaskList, &( pxTCB->xGenericListItem ) );
|
|
|
- }
|
|
|
- taskEXIT_CRITICAL();
|
|
|
-
|
|
|
- if( ( void * ) pxTaskToSuspend == NULL )
|
|
|
- {
|
|
|
- if( xSchedulerRunning != pdFALSE )
|
|
|
- {
|
|
|
- /* We have just suspended the current task. */
|
|
|
- portYIELD_WITHIN_API();
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* The scheduler is not running, but the task that was pointed
|
|
|
- to by pxCurrentTCB has just been suspended and pxCurrentTCB
|
|
|
- must be adjusted to point to a different task. */
|
|
|
- if( listCURRENT_LIST_LENGTH( &xSuspendedTaskList ) == uxCurrentNumberOfTasks )
|
|
|
- {
|
|
|
- /* No other tasks are ready, so set pxCurrentTCB back to
|
|
|
- NULL so when the next task is created pxCurrentTCB will
|
|
|
- be set to point to it no matter what its relative priority
|
|
|
- is. */
|
|
|
- pxCurrentTCB = NULL;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- vTaskSwitchContext();
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( INCLUDE_vTaskSuspend == 1 )
|
|
|
-
|
|
|
- signed portBASE_TYPE xTaskIsTaskSuspended( xTaskHandle xTask )
|
|
|
- {
|
|
|
- portBASE_TYPE xReturn = pdFALSE;
|
|
|
- const tskTCB * const pxTCB = ( tskTCB * ) xTask;
|
|
|
-
|
|
|
- /* It does not make sense to check if the calling task is suspended. */
|
|
|
- configASSERT( xTask );
|
|
|
-
|
|
|
- /* Is the task we are attempting to resume actually in the
|
|
|
- suspended list? */
|
|
|
- if( listIS_CONTAINED_WITHIN( &xSuspendedTaskList, &( pxTCB->xGenericListItem ) ) != pdFALSE )
|
|
|
- {
|
|
|
- /* Has the task already been resumed from within an ISR? */
|
|
|
- if( listIS_CONTAINED_WITHIN( &xPendingReadyList, &( pxTCB->xEventListItem ) ) != pdTRUE )
|
|
|
- {
|
|
|
- /* Is it in the suspended list because it is in the
|
|
|
- Suspended state? It is possible to be in the suspended
|
|
|
- list because it is blocked on a task with no timeout
|
|
|
- specified. */
|
|
|
- if( listIS_CONTAINED_WITHIN( NULL, &( pxTCB->xEventListItem ) ) == pdTRUE )
|
|
|
- {
|
|
|
- xReturn = pdTRUE;
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return xReturn;
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( INCLUDE_vTaskSuspend == 1 )
|
|
|
-
|
|
|
- void vTaskResume( xTaskHandle pxTaskToResume )
|
|
|
- {
|
|
|
- tskTCB *pxTCB;
|
|
|
-
|
|
|
- /* It does not make sense to resume the calling task. */
|
|
|
- configASSERT( pxTaskToResume );
|
|
|
-
|
|
|
- /* Remove the task from whichever list it is currently in, and place
|
|
|
- it in the ready list. */
|
|
|
- pxTCB = ( tskTCB * ) pxTaskToResume;
|
|
|
-
|
|
|
- /* The parameter cannot be NULL as it is impossible to resume the
|
|
|
- currently executing task. */
|
|
|
- if( ( pxTCB != NULL ) && ( pxTCB != pxCurrentTCB ) )
|
|
|
- {
|
|
|
- taskENTER_CRITICAL();
|
|
|
- {
|
|
|
- if( xTaskIsTaskSuspended( pxTCB ) == pdTRUE )
|
|
|
- {
|
|
|
- traceTASK_RESUME( pxTCB );
|
|
|
-
|
|
|
- /* As we are in a critical section we can access the ready
|
|
|
- lists even if the scheduler is suspended. */
|
|
|
- uxListRemove( &( pxTCB->xGenericListItem ) );
|
|
|
- prvAddTaskToReadyQueue( pxTCB );
|
|
|
-
|
|
|
- /* We may have just resumed a higher priority task. */
|
|
|
- if( pxTCB->uxPriority >= pxCurrentTCB->uxPriority )
|
|
|
- {
|
|
|
- /* This yield may not cause the task just resumed to run, but
|
|
|
- will leave the lists in the correct state for the next yield. */
|
|
|
- portYIELD_WITHIN_API();
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- taskEXIT_CRITICAL();
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( ( INCLUDE_xTaskResumeFromISR == 1 ) && ( INCLUDE_vTaskSuspend == 1 ) )
|
|
|
-
|
|
|
- portBASE_TYPE xTaskResumeFromISR( xTaskHandle pxTaskToResume )
|
|
|
- {
|
|
|
- portBASE_TYPE xYieldRequired = pdFALSE;
|
|
|
- tskTCB *pxTCB;
|
|
|
- unsigned portBASE_TYPE uxSavedInterruptStatus;
|
|
|
-
|
|
|
- configASSERT( pxTaskToResume );
|
|
|
-
|
|
|
- pxTCB = ( tskTCB * ) pxTaskToResume;
|
|
|
-
|
|
|
- uxSavedInterruptStatus = portSET_INTERRUPT_MASK_FROM_ISR();
|
|
|
- {
|
|
|
- if( xTaskIsTaskSuspended( pxTCB ) == pdTRUE )
|
|
|
- {
|
|
|
- traceTASK_RESUME_FROM_ISR( pxTCB );
|
|
|
-
|
|
|
- if( uxSchedulerSuspended == ( unsigned portBASE_TYPE ) pdFALSE )
|
|
|
- {
|
|
|
- xYieldRequired = ( pxTCB->uxPriority >= pxCurrentTCB->uxPriority );
|
|
|
- uxListRemove( &( pxTCB->xGenericListItem ) );
|
|
|
- prvAddTaskToReadyQueue( pxTCB );
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* We cannot access the delayed or ready lists, so will hold this
|
|
|
- task pending until the scheduler is resumed, at which point a
|
|
|
- yield will be performed if necessary. */
|
|
|
- vListInsertEnd( ( xList * ) &( xPendingReadyList ), &( pxTCB->xEventListItem ) );
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedInterruptStatus );
|
|
|
-
|
|
|
- return xYieldRequired;
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-/*-----------------------------------------------------------
|
|
|
- * PUBLIC SCHEDULER CONTROL documented in task.h
|
|
|
- *----------------------------------------------------------*/
|
|
|
-
|
|
|
-
|
|
|
-void vTaskStartScheduler( void )
|
|
|
-{
|
|
|
-portBASE_TYPE xReturn;
|
|
|
-
|
|
|
- /* Add the idle task at the lowest priority. */
|
|
|
- #if ( INCLUDE_xTaskGetIdleTaskHandle == 1 )
|
|
|
- {
|
|
|
- /* Create the idle task, storing its handle in xIdleTaskHandle so it can
|
|
|
- be returned by the xTaskGetIdleTaskHandle() function. */
|
|
|
- xReturn = xTaskCreate( prvIdleTask, ( signed char * ) "IDLE", tskIDLE_STACK_SIZE, ( void * ) NULL, ( tskIDLE_PRIORITY | portPRIVILEGE_BIT ), &xIdleTaskHandle );
|
|
|
- }
|
|
|
- #else
|
|
|
- {
|
|
|
- /* Create the idle task without storing its handle. */
|
|
|
- xReturn = xTaskCreate( prvIdleTask, ( signed char * ) "IDLE", tskIDLE_STACK_SIZE, ( void * ) NULL, ( tskIDLE_PRIORITY | portPRIVILEGE_BIT ), NULL );
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- #if ( configUSE_TIMERS == 1 )
|
|
|
- {
|
|
|
- if( xReturn == pdPASS )
|
|
|
- {
|
|
|
- xReturn = xTimerCreateTimerTask();
|
|
|
- }
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- if( xReturn == pdPASS )
|
|
|
- {
|
|
|
- /* Interrupts are turned off here, to ensure a tick does not occur
|
|
|
- before or during the call to xPortStartScheduler(). The stacks of
|
|
|
- the created tasks contain a status word with interrupts switched on
|
|
|
- so interrupts will automatically get re-enabled when the first task
|
|
|
- starts to run.
|
|
|
-
|
|
|
- STEPPING THROUGH HERE USING A DEBUGGER CAN CAUSE BIG PROBLEMS IF THE
|
|
|
- DEBUGGER ALLOWS INTERRUPTS TO BE PROCESSED. */
|
|
|
- portDISABLE_INTERRUPTS();
|
|
|
-
|
|
|
- xSchedulerRunning = pdTRUE;
|
|
|
- xTickCount = ( portTickType ) 0U;
|
|
|
-
|
|
|
- /* If configGENERATE_RUN_TIME_STATS is defined then the following
|
|
|
- macro must be defined to configure the timer/counter used to generate
|
|
|
- the run time counter time base. */
|
|
|
- portCONFIGURE_TIMER_FOR_RUN_TIME_STATS();
|
|
|
-
|
|
|
- /* Setting up the timer tick is hardware specific and thus in the
|
|
|
- portable interface. */
|
|
|
- if( xPortStartScheduler() != pdFALSE )
|
|
|
- {
|
|
|
- /* Should not reach here as if the scheduler is running the
|
|
|
- function will not return. */
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* Should only reach here if a task calls xTaskEndScheduler(). */
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /* This line will only be reached if the kernel could not be started. */
|
|
|
- configASSERT( xReturn );
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-void vTaskEndScheduler( void )
|
|
|
-{
|
|
|
- /* Stop the scheduler interrupts and call the portable scheduler end
|
|
|
- routine so the original ISRs can be restored if necessary. The port
|
|
|
- layer must ensure interrupts enable bit is left in the correct state. */
|
|
|
- portDISABLE_INTERRUPTS();
|
|
|
- xSchedulerRunning = pdFALSE;
|
|
|
- vPortEndScheduler();
|
|
|
-}
|
|
|
-/*----------------------------------------------------------*/
|
|
|
-
|
|
|
-void vTaskSuspendAll( void )
|
|
|
-{
|
|
|
- /* A critical section is not required as the variable is of type
|
|
|
- portBASE_TYPE. */
|
|
|
- ++uxSchedulerSuspended;
|
|
|
-}
|
|
|
-/*----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( configUSE_TICKLESS_IDLE != 0 )
|
|
|
-
|
|
|
- portTickType prvGetExpectedIdleTime( void )
|
|
|
- {
|
|
|
- portTickType xReturn;
|
|
|
-
|
|
|
- if( pxCurrentTCB->uxPriority > tskIDLE_PRIORITY )
|
|
|
- {
|
|
|
- xReturn = 0;
|
|
|
- }
|
|
|
- else if( listCURRENT_LIST_LENGTH( &( pxReadyTasksLists[ tskIDLE_PRIORITY ] ) ) > 1 )
|
|
|
- {
|
|
|
- /* There are other idle priority tasks in the ready state. If
|
|
|
- time slicing is used then the very next tick interrupt must be
|
|
|
- processed. */
|
|
|
- xReturn = 0;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- xReturn = xNextTaskUnblockTime - xTickCount;
|
|
|
- }
|
|
|
-
|
|
|
- return xReturn;
|
|
|
- }
|
|
|
-
|
|
|
-#endif /* configUSE_TICKLESS_IDLE != 0 */
|
|
|
-/*----------------------------------------------------------*/
|
|
|
-
|
|
|
-signed portBASE_TYPE xTaskResumeAll( void )
|
|
|
-{
|
|
|
-register tskTCB *pxTCB;
|
|
|
-signed portBASE_TYPE xAlreadyYielded = pdFALSE;
|
|
|
-
|
|
|
- /* If uxSchedulerSuspended is zero then this function does not match a
|
|
|
- previous call to vTaskSuspendAll(). */
|
|
|
- configASSERT( uxSchedulerSuspended );
|
|
|
-
|
|
|
- /* It is possible that an ISR caused a task to be removed from an event
|
|
|
- list while the scheduler was suspended. If this was the case then the
|
|
|
- removed task will have been added to the xPendingReadyList. Once the
|
|
|
- scheduler has been resumed it is safe to move all the pending ready
|
|
|
- tasks from this list into their appropriate ready list. */
|
|
|
- taskENTER_CRITICAL();
|
|
|
- {
|
|
|
- --uxSchedulerSuspended;
|
|
|
-
|
|
|
- if( uxSchedulerSuspended == ( unsigned portBASE_TYPE ) pdFALSE )
|
|
|
- {
|
|
|
- if( uxCurrentNumberOfTasks > ( unsigned portBASE_TYPE ) 0U )
|
|
|
- {
|
|
|
- portBASE_TYPE xYieldRequired = pdFALSE;
|
|
|
-
|
|
|
- /* Move any readied tasks from the pending list into the
|
|
|
- appropriate ready list. */
|
|
|
- while( listLIST_IS_EMPTY( ( xList * ) &xPendingReadyList ) == pdFALSE )
|
|
|
- {
|
|
|
- pxTCB = ( tskTCB * ) listGET_OWNER_OF_HEAD_ENTRY( ( ( xList * ) &xPendingReadyList ) );
|
|
|
- uxListRemove( &( pxTCB->xEventListItem ) );
|
|
|
- uxListRemove( &( pxTCB->xGenericListItem ) );
|
|
|
- prvAddTaskToReadyQueue( pxTCB );
|
|
|
-
|
|
|
- /* If we have moved a task that has a priority higher than
|
|
|
- the current task then we should yield. */
|
|
|
- if( pxTCB->uxPriority >= pxCurrentTCB->uxPriority )
|
|
|
- {
|
|
|
- xYieldRequired = pdTRUE;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /* If any ticks occurred while the scheduler was suspended then
|
|
|
- they should be processed now. This ensures the tick count does not
|
|
|
- slip, and that any delayed tasks are resumed at the correct time. */
|
|
|
- if( uxMissedTicks > ( unsigned portBASE_TYPE ) 0U )
|
|
|
- {
|
|
|
- while( uxMissedTicks > ( unsigned portBASE_TYPE ) 0U )
|
|
|
- {
|
|
|
- vTaskIncrementTick();
|
|
|
- --uxMissedTicks;
|
|
|
- }
|
|
|
-
|
|
|
- /* As we have processed some ticks it is appropriate to yield
|
|
|
- to ensure the highest priority task that is ready to run is
|
|
|
- the task actually running. */
|
|
|
- #if configUSE_PREEMPTION == 1
|
|
|
- {
|
|
|
- xYieldRequired = pdTRUE;
|
|
|
- }
|
|
|
- #endif
|
|
|
- }
|
|
|
-
|
|
|
- if( ( xYieldRequired == pdTRUE ) || ( xMissedYield == pdTRUE ) )
|
|
|
- {
|
|
|
- xAlreadyYielded = pdTRUE;
|
|
|
- xMissedYield = pdFALSE;
|
|
|
- portYIELD_WITHIN_API();
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- taskEXIT_CRITICAL();
|
|
|
-
|
|
|
- return xAlreadyYielded;
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-/*-----------------------------------------------------------
|
|
|
- * PUBLIC TASK UTILITIES documented in task.h
|
|
|
- *----------------------------------------------------------*/
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-portTickType xTaskGetTickCount( void )
|
|
|
-{
|
|
|
-portTickType xTicks;
|
|
|
-
|
|
|
- /* Critical section required if running on a 16 bit processor. */
|
|
|
- taskENTER_CRITICAL();
|
|
|
- {
|
|
|
- xTicks = xTickCount;
|
|
|
- }
|
|
|
- taskEXIT_CRITICAL();
|
|
|
-
|
|
|
- return xTicks;
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-portTickType xTaskGetTickCountFromISR( void )
|
|
|
-{
|
|
|
-portTickType xReturn;
|
|
|
-unsigned portBASE_TYPE uxSavedInterruptStatus;
|
|
|
-
|
|
|
- uxSavedInterruptStatus = portSET_INTERRUPT_MASK_FROM_ISR();
|
|
|
- xReturn = xTickCount;
|
|
|
- portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedInterruptStatus );
|
|
|
-
|
|
|
- return xReturn;
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-unsigned portBASE_TYPE uxTaskGetNumberOfTasks( void )
|
|
|
-{
|
|
|
- /* A critical section is not required because the variables are of type
|
|
|
- portBASE_TYPE. */
|
|
|
- return uxCurrentNumberOfTasks;
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( INCLUDE_pcTaskGetTaskName == 1 )
|
|
|
-
|
|
|
- signed char *pcTaskGetTaskName( xTaskHandle xTaskToQuery )
|
|
|
- {
|
|
|
- tskTCB *pxTCB;
|
|
|
-
|
|
|
- /* If null is passed in here then the name of the calling task is being queried. */
|
|
|
- pxTCB = prvGetTCBFromHandle( xTaskToQuery );
|
|
|
- configASSERT( pxTCB );
|
|
|
- return &( pxTCB->pcTaskName[ 0 ] );
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( configUSE_TRACE_FACILITY == 1 )
|
|
|
-
|
|
|
- void vTaskList( signed char *pcWriteBuffer )
|
|
|
- {
|
|
|
- unsigned portBASE_TYPE uxQueue;
|
|
|
-
|
|
|
- /* This is a VERY costly function that should be used for debug only.
|
|
|
- It leaves interrupts disabled for a LONG time. */
|
|
|
-
|
|
|
- vTaskSuspendAll();
|
|
|
- {
|
|
|
- /* Run through all the lists that could potentially contain a TCB and
|
|
|
- report the task name, state and stack high water mark. */
|
|
|
-
|
|
|
- *pcWriteBuffer = ( signed char ) 0x00;
|
|
|
- strcat( ( char * ) pcWriteBuffer, ( const char * ) "\r\n" );
|
|
|
-
|
|
|
- uxQueue = uxTopUsedPriority + ( unsigned portBASE_TYPE ) 1U;
|
|
|
-
|
|
|
- do
|
|
|
- {
|
|
|
- uxQueue--;
|
|
|
-
|
|
|
- if( listLIST_IS_EMPTY( &( pxReadyTasksLists[ uxQueue ] ) ) == pdFALSE )
|
|
|
- {
|
|
|
- prvListTaskWithinSingleList( pcWriteBuffer, ( xList * ) &( pxReadyTasksLists[ uxQueue ] ), tskREADY_CHAR );
|
|
|
- }
|
|
|
- }while( uxQueue > ( unsigned short ) tskIDLE_PRIORITY );
|
|
|
-
|
|
|
- if( listLIST_IS_EMPTY( pxDelayedTaskList ) == pdFALSE )
|
|
|
- {
|
|
|
- prvListTaskWithinSingleList( pcWriteBuffer, ( xList * ) pxDelayedTaskList, tskBLOCKED_CHAR );
|
|
|
- }
|
|
|
-
|
|
|
- if( listLIST_IS_EMPTY( pxOverflowDelayedTaskList ) == pdFALSE )
|
|
|
- {
|
|
|
- prvListTaskWithinSingleList( pcWriteBuffer, ( xList * ) pxOverflowDelayedTaskList, tskBLOCKED_CHAR );
|
|
|
- }
|
|
|
-
|
|
|
- #if( INCLUDE_vTaskDelete == 1 )
|
|
|
- {
|
|
|
- if( listLIST_IS_EMPTY( &xTasksWaitingTermination ) == pdFALSE )
|
|
|
- {
|
|
|
- prvListTaskWithinSingleList( pcWriteBuffer, &xTasksWaitingTermination, tskDELETED_CHAR );
|
|
|
- }
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- #if ( INCLUDE_vTaskSuspend == 1 )
|
|
|
- {
|
|
|
- if( listLIST_IS_EMPTY( &xSuspendedTaskList ) == pdFALSE )
|
|
|
- {
|
|
|
- prvListTaskWithinSingleList( pcWriteBuffer, &xSuspendedTaskList, tskSUSPENDED_CHAR );
|
|
|
- }
|
|
|
- }
|
|
|
- #endif
|
|
|
- }
|
|
|
- xTaskResumeAll();
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( configGENERATE_RUN_TIME_STATS == 1 )
|
|
|
-
|
|
|
- void vTaskGetRunTimeStats( signed char *pcWriteBuffer )
|
|
|
- {
|
|
|
- unsigned portBASE_TYPE uxQueue;
|
|
|
- unsigned long ulTotalRunTime;
|
|
|
-
|
|
|
- /* This is a VERY costly function that should be used for debug only.
|
|
|
- It leaves interrupts disabled for a LONG time. */
|
|
|
-
|
|
|
- vTaskSuspendAll();
|
|
|
- {
|
|
|
- #ifdef portALT_GET_RUN_TIME_COUNTER_VALUE
|
|
|
- portALT_GET_RUN_TIME_COUNTER_VALUE( ulTotalRunTime );
|
|
|
- #else
|
|
|
- ulTotalRunTime = portGET_RUN_TIME_COUNTER_VALUE();
|
|
|
- #endif
|
|
|
-
|
|
|
- /* Divide ulTotalRunTime by 100 to make the percentage caluclations
|
|
|
- simpler in the prvGenerateRunTimeStatsForTasksInList() function. */
|
|
|
- ulTotalRunTime /= 100UL;
|
|
|
-
|
|
|
- /* Run through all the lists that could potentially contain a TCB,
|
|
|
- generating a table of run timer percentages in the provided
|
|
|
- buffer. */
|
|
|
-
|
|
|
- *pcWriteBuffer = ( signed char ) 0x00;
|
|
|
- strcat( ( char * ) pcWriteBuffer, ( const char * ) "\r\n" );
|
|
|
-
|
|
|
- uxQueue = uxTopUsedPriority + ( unsigned portBASE_TYPE ) 1U;
|
|
|
-
|
|
|
- do
|
|
|
- {
|
|
|
- uxQueue--;
|
|
|
-
|
|
|
- if( listLIST_IS_EMPTY( &( pxReadyTasksLists[ uxQueue ] ) ) == pdFALSE )
|
|
|
- {
|
|
|
- prvGenerateRunTimeStatsForTasksInList( pcWriteBuffer, ( xList * ) &( pxReadyTasksLists[ uxQueue ] ), ulTotalRunTime );
|
|
|
- }
|
|
|
- }while( uxQueue > ( unsigned short ) tskIDLE_PRIORITY );
|
|
|
-
|
|
|
- if( listLIST_IS_EMPTY( pxDelayedTaskList ) == pdFALSE )
|
|
|
- {
|
|
|
- prvGenerateRunTimeStatsForTasksInList( pcWriteBuffer, ( xList * ) pxDelayedTaskList, ulTotalRunTime );
|
|
|
- }
|
|
|
-
|
|
|
- if( listLIST_IS_EMPTY( pxOverflowDelayedTaskList ) == pdFALSE )
|
|
|
- {
|
|
|
- prvGenerateRunTimeStatsForTasksInList( pcWriteBuffer, ( xList * ) pxOverflowDelayedTaskList, ulTotalRunTime );
|
|
|
- }
|
|
|
-
|
|
|
- #if ( INCLUDE_vTaskDelete == 1 )
|
|
|
- {
|
|
|
- if( listLIST_IS_EMPTY( &xTasksWaitingTermination ) == pdFALSE )
|
|
|
- {
|
|
|
- prvGenerateRunTimeStatsForTasksInList( pcWriteBuffer, &xTasksWaitingTermination, ulTotalRunTime );
|
|
|
- }
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- #if ( INCLUDE_vTaskSuspend == 1 )
|
|
|
- {
|
|
|
- if( listLIST_IS_EMPTY( &xSuspendedTaskList ) == pdFALSE )
|
|
|
- {
|
|
|
- prvGenerateRunTimeStatsForTasksInList( pcWriteBuffer, &xSuspendedTaskList, ulTotalRunTime );
|
|
|
- }
|
|
|
- }
|
|
|
- #endif
|
|
|
- }
|
|
|
- xTaskResumeAll();
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( INCLUDE_xTaskGetIdleTaskHandle == 1 )
|
|
|
-
|
|
|
- xTaskHandle xTaskGetIdleTaskHandle( void )
|
|
|
- {
|
|
|
- /* If xTaskGetIdleTaskHandle() is called before the scheduler has been
|
|
|
- started, then xIdleTaskHandle will be NULL. */
|
|
|
- configASSERT( ( xIdleTaskHandle != NULL ) );
|
|
|
- return xIdleTaskHandle;
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*----------------------------------------------------------*/
|
|
|
-
|
|
|
-/* This conditional compilation should use inequality to 0, not equality to 1.
|
|
|
-This is to ensure vTaskStepTick() is available when user defined low power mode
|
|
|
-implementations require configUSE_TICKLESS_IDLE to be set to a value other than
|
|
|
-1. */
|
|
|
-#if ( configUSE_TICKLESS_IDLE != 0 )
|
|
|
-
|
|
|
- void vTaskStepTick( portTickType xTicksToJump )
|
|
|
- {
|
|
|
- configASSERT( xTicksToJump <= xNextTaskUnblockTime );
|
|
|
- xTickCount += xTicksToJump;
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-
|
|
|
-/*-----------------------------------------------------------
|
|
|
- * SCHEDULER INTERNALS AVAILABLE FOR PORTING PURPOSES
|
|
|
- * documented in task.h
|
|
|
- *----------------------------------------------------------*/
|
|
|
-
|
|
|
-void vTaskIncrementTick( void )
|
|
|
-{
|
|
|
-tskTCB * pxTCB;
|
|
|
-
|
|
|
- /* Called by the portable layer each time a tick interrupt occurs.
|
|
|
- Increments the tick then checks to see if the new tick value will cause any
|
|
|
- tasks to be unblocked. */
|
|
|
- traceTASK_INCREMENT_TICK( xTickCount );
|
|
|
- if( uxSchedulerSuspended == ( unsigned portBASE_TYPE ) pdFALSE )
|
|
|
- {
|
|
|
- ++xTickCount;
|
|
|
- if( xTickCount == ( portTickType ) 0U )
|
|
|
- {
|
|
|
- xList *pxTemp;
|
|
|
-
|
|
|
- /* Tick count has overflowed so we need to swap the delay lists.
|
|
|
- If there are any items in pxDelayedTaskList here then there is
|
|
|
- an error! */
|
|
|
- configASSERT( ( listLIST_IS_EMPTY( pxDelayedTaskList ) ) );
|
|
|
-
|
|
|
- pxTemp = pxDelayedTaskList;
|
|
|
- pxDelayedTaskList = pxOverflowDelayedTaskList;
|
|
|
- pxOverflowDelayedTaskList = pxTemp;
|
|
|
- xNumOfOverflows++;
|
|
|
-
|
|
|
- if( listLIST_IS_EMPTY( pxDelayedTaskList ) != pdFALSE )
|
|
|
- {
|
|
|
- /* The new current delayed list is empty. Set
|
|
|
- xNextTaskUnblockTime to the maximum possible value so it is
|
|
|
- extremely unlikely that the
|
|
|
- if( xTickCount >= xNextTaskUnblockTime ) test will pass until
|
|
|
- there is an item in the delayed list. */
|
|
|
- xNextTaskUnblockTime = portMAX_DELAY;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* The new current delayed list is not empty, get the value of
|
|
|
- the item at the head of the delayed list. This is the time at
|
|
|
- which the task at the head of the delayed list should be removed
|
|
|
- from the Blocked state. */
|
|
|
- pxTCB = ( tskTCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxDelayedTaskList );
|
|
|
- xNextTaskUnblockTime = listGET_LIST_ITEM_VALUE( &( pxTCB->xGenericListItem ) );
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /* See if this tick has made a timeout expire. */
|
|
|
- prvCheckDelayedTasks();
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- ++uxMissedTicks;
|
|
|
-
|
|
|
- /* The tick hook gets called at regular intervals, even if the
|
|
|
- scheduler is locked. */
|
|
|
- #if ( configUSE_TICK_HOOK == 1 )
|
|
|
- {
|
|
|
- vApplicationTickHook();
|
|
|
- }
|
|
|
- #endif
|
|
|
- }
|
|
|
-
|
|
|
- #if ( configUSE_TICK_HOOK == 1 )
|
|
|
- {
|
|
|
- /* Guard against the tick hook being called when the missed tick
|
|
|
- count is being unwound (when the scheduler is being unlocked. */
|
|
|
- if( uxMissedTicks == ( unsigned portBASE_TYPE ) 0U )
|
|
|
- {
|
|
|
- vApplicationTickHook();
|
|
|
- }
|
|
|
- }
|
|
|
- #endif
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( configUSE_APPLICATION_TASK_TAG == 1 )
|
|
|
-
|
|
|
- void vTaskSetApplicationTaskTag( xTaskHandle xTask, pdTASK_HOOK_CODE pxHookFunction )
|
|
|
- {
|
|
|
- tskTCB *xTCB;
|
|
|
-
|
|
|
- /* If xTask is NULL then we are setting our own task hook. */
|
|
|
- if( xTask == NULL )
|
|
|
- {
|
|
|
- xTCB = ( tskTCB * ) pxCurrentTCB;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- xTCB = ( tskTCB * ) xTask;
|
|
|
- }
|
|
|
-
|
|
|
- /* Save the hook function in the TCB. A critical section is required as
|
|
|
- the value can be accessed from an interrupt. */
|
|
|
- taskENTER_CRITICAL();
|
|
|
- xTCB->pxTaskTag = pxHookFunction;
|
|
|
- taskEXIT_CRITICAL();
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( configUSE_APPLICATION_TASK_TAG == 1 )
|
|
|
-
|
|
|
- pdTASK_HOOK_CODE xTaskGetApplicationTaskTag( xTaskHandle xTask )
|
|
|
- {
|
|
|
- tskTCB *xTCB;
|
|
|
- pdTASK_HOOK_CODE xReturn;
|
|
|
-
|
|
|
- /* If xTask is NULL then we are setting our own task hook. */
|
|
|
- if( xTask == NULL )
|
|
|
- {
|
|
|
- xTCB = ( tskTCB * ) pxCurrentTCB;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- xTCB = ( tskTCB * ) xTask;
|
|
|
- }
|
|
|
-
|
|
|
- /* Save the hook function in the TCB. A critical section is required as
|
|
|
- the value can be accessed from an interrupt. */
|
|
|
- taskENTER_CRITICAL();
|
|
|
- xReturn = xTCB->pxTaskTag;
|
|
|
- taskEXIT_CRITICAL();
|
|
|
-
|
|
|
- return xReturn;
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( configUSE_APPLICATION_TASK_TAG == 1 )
|
|
|
-
|
|
|
- portBASE_TYPE xTaskCallApplicationTaskHook( xTaskHandle xTask, void *pvParameter )
|
|
|
- {
|
|
|
- tskTCB *xTCB;
|
|
|
- portBASE_TYPE xReturn;
|
|
|
-
|
|
|
- /* If xTask is NULL then we are calling our own task hook. */
|
|
|
- if( xTask == NULL )
|
|
|
- {
|
|
|
- xTCB = ( tskTCB * ) pxCurrentTCB;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- xTCB = ( tskTCB * ) xTask;
|
|
|
- }
|
|
|
-
|
|
|
- if( xTCB->pxTaskTag != NULL )
|
|
|
- {
|
|
|
- xReturn = xTCB->pxTaskTag( pvParameter );
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- xReturn = pdFAIL;
|
|
|
- }
|
|
|
-
|
|
|
- return xReturn;
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-void vTaskSwitchContext( void )
|
|
|
-{
|
|
|
- if( uxSchedulerSuspended != ( unsigned portBASE_TYPE ) pdFALSE )
|
|
|
- {
|
|
|
- /* The scheduler is currently suspended - do not allow a context
|
|
|
- switch. */
|
|
|
- xMissedYield = pdTRUE;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- traceTASK_SWITCHED_OUT();
|
|
|
-
|
|
|
- #if ( configGENERATE_RUN_TIME_STATS == 1 )
|
|
|
- {
|
|
|
- unsigned long ulTempCounter;
|
|
|
-
|
|
|
- #ifdef portALT_GET_RUN_TIME_COUNTER_VALUE
|
|
|
- portALT_GET_RUN_TIME_COUNTER_VALUE( ulTempCounter );
|
|
|
- #else
|
|
|
- ulTempCounter = portGET_RUN_TIME_COUNTER_VALUE();
|
|
|
- #endif
|
|
|
-
|
|
|
- /* Add the amount of time the task has been running to the accumulated
|
|
|
- time so far. The time the task started running was stored in
|
|
|
- ulTaskSwitchedInTime. Note that there is no overflow protection here
|
|
|
- so count values are only valid until the timer overflows. Generally
|
|
|
- this will be about 1 hour assuming a 1uS timer increment. */
|
|
|
- pxCurrentTCB->ulRunTimeCounter += ( ulTempCounter - ulTaskSwitchedInTime );
|
|
|
- ulTaskSwitchedInTime = ulTempCounter;
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- taskFIRST_CHECK_FOR_STACK_OVERFLOW();
|
|
|
- taskSECOND_CHECK_FOR_STACK_OVERFLOW();
|
|
|
-
|
|
|
- taskSELECT_HIGHEST_PRIORITY_TASK();
|
|
|
-
|
|
|
- traceTASK_SWITCHED_IN();
|
|
|
- }
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-void vTaskPlaceOnEventList( const xList * const pxEventList, portTickType xTicksToWait )
|
|
|
-{
|
|
|
-portTickType xTimeToWake;
|
|
|
-
|
|
|
- configASSERT( pxEventList );
|
|
|
-
|
|
|
- /* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED OR THE
|
|
|
- SCHEDULER SUSPENDED. */
|
|
|
-
|
|
|
- /* Place the event list item of the TCB in the appropriate event list.
|
|
|
- This is placed in the list in priority order so the highest priority task
|
|
|
- is the first to be woken by the event. */
|
|
|
- vListInsert( ( xList * ) pxEventList, ( xListItem * ) &( pxCurrentTCB->xEventListItem ) );
|
|
|
-
|
|
|
- /* 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. We have
|
|
|
- exclusive access to the ready lists as the scheduler is locked. */
|
|
|
- if( uxListRemove( ( xListItem * ) &( pxCurrentTCB->xGenericListItem ) ) == 0 )
|
|
|
- {
|
|
|
- /* The current task must be in a ready list, so there is no need to
|
|
|
- check, and the port reset macro can be called directly. */
|
|
|
- portRESET_READY_PRIORITY( pxCurrentTCB->uxPriority, uxTopReadyPriority );
|
|
|
- }
|
|
|
-
|
|
|
- #if ( INCLUDE_vTaskSuspend == 1 )
|
|
|
- {
|
|
|
- if( xTicksToWait == portMAX_DELAY )
|
|
|
- {
|
|
|
- /* Add ourselves to the suspended task list instead of a delayed task
|
|
|
- list to ensure we are not woken by a timing event. We will block
|
|
|
- indefinitely. */
|
|
|
- vListInsertEnd( ( xList * ) &xSuspendedTaskList, ( xListItem * ) &( pxCurrentTCB->xGenericListItem ) );
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* Calculate the time at which the task should be woken if the event does
|
|
|
- not occur. This may overflow but this doesn't matter. */
|
|
|
- xTimeToWake = xTickCount + xTicksToWait;
|
|
|
- prvAddCurrentTaskToDelayedList( xTimeToWake );
|
|
|
- }
|
|
|
- }
|
|
|
- #else
|
|
|
- {
|
|
|
- /* Calculate the time at which the task should be woken if the event does
|
|
|
- not occur. This may overflow but this doesn't matter. */
|
|
|
- xTimeToWake = xTickCount + xTicksToWait;
|
|
|
- prvAddCurrentTaskToDelayedList( xTimeToWake );
|
|
|
- }
|
|
|
- #endif
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if configUSE_TIMERS == 1
|
|
|
-
|
|
|
- void vTaskPlaceOnEventListRestricted( const xList * const pxEventList, portTickType xTicksToWait )
|
|
|
- {
|
|
|
- portTickType xTimeToWake;
|
|
|
-
|
|
|
- configASSERT( pxEventList );
|
|
|
-
|
|
|
- /* This function should not be called by application code hence the
|
|
|
- 'Restricted' in its name. It is not part of the public API. It is
|
|
|
- designed for use by kernel code, and has special calling requirements -
|
|
|
- it should be called from a critical section. */
|
|
|
-
|
|
|
-
|
|
|
- /* Place the event list item of the TCB in the appropriate event list.
|
|
|
- In this case it is assume that this is the only task that is going to
|
|
|
- be waiting on this event list, so the faster vListInsertEnd() function
|
|
|
- can be used in place of vListInsert. */
|
|
|
- vListInsertEnd( ( xList * ) pxEventList, ( xListItem * ) &( pxCurrentTCB->xEventListItem ) );
|
|
|
-
|
|
|
- /* We must remove this task from the ready list before adding it to the
|
|
|
- blocked list as the same list item is used for both lists. This
|
|
|
- function is called form a critical section. */
|
|
|
- if( uxListRemove( ( xListItem * ) &( pxCurrentTCB->xGenericListItem ) ) == 0 )
|
|
|
- {
|
|
|
- /* The current task must be in a ready list, so there is no need to
|
|
|
- check, and the port reset macro can be called directly. */
|
|
|
- portRESET_READY_PRIORITY( pxCurrentTCB->uxPriority, uxTopReadyPriority );
|
|
|
- }
|
|
|
-
|
|
|
- /* Calculate the time at which the task should be woken if the event does
|
|
|
- not occur. This may overflow but this doesn't matter. */
|
|
|
- xTimeToWake = xTickCount + xTicksToWait;
|
|
|
-
|
|
|
- traceTASK_DELAY_UNTIL();
|
|
|
- prvAddCurrentTaskToDelayedList( xTimeToWake );
|
|
|
- }
|
|
|
-
|
|
|
-#endif /* configUSE_TIMERS */
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-signed portBASE_TYPE xTaskRemoveFromEventList( const xList * const pxEventList )
|
|
|
-{
|
|
|
-tskTCB *pxUnblockedTCB;
|
|
|
-portBASE_TYPE xReturn;
|
|
|
-
|
|
|
- /* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED OR THE
|
|
|
- SCHEDULER SUSPENDED. It can also be called from within an ISR. */
|
|
|
-
|
|
|
- /* The event list is sorted in priority order, so we can remove the
|
|
|
- first in the list, remove the TCB from the delayed list, and add
|
|
|
- it to the ready list.
|
|
|
-
|
|
|
- If an event is for a queue that is locked then this function will never
|
|
|
- get called - the lock count on the queue will get modified instead. This
|
|
|
- means we can always expect exclusive access to the event list here.
|
|
|
-
|
|
|
- This function assumes that a check has already been made to ensure that
|
|
|
- pxEventList is not empty. */
|
|
|
- pxUnblockedTCB = ( tskTCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxEventList );
|
|
|
- configASSERT( pxUnblockedTCB );
|
|
|
- uxListRemove( &( pxUnblockedTCB->xEventListItem ) );
|
|
|
-
|
|
|
- if( uxSchedulerSuspended == ( unsigned portBASE_TYPE ) pdFALSE )
|
|
|
- {
|
|
|
- uxListRemove( &( pxUnblockedTCB->xGenericListItem ) );
|
|
|
- prvAddTaskToReadyQueue( pxUnblockedTCB );
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* We cannot access the delayed or ready lists, so will hold this
|
|
|
- task pending until the scheduler is resumed. */
|
|
|
- vListInsertEnd( ( xList * ) &( xPendingReadyList ), &( pxUnblockedTCB->xEventListItem ) );
|
|
|
- }
|
|
|
-
|
|
|
- if( pxUnblockedTCB->uxPriority >= pxCurrentTCB->uxPriority )
|
|
|
- {
|
|
|
- /* Return true if the task removed from the event list has
|
|
|
- a higher priority than the calling task. This allows
|
|
|
- the calling task to know if it should force a context
|
|
|
- switch now. */
|
|
|
- xReturn = pdTRUE;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- xReturn = pdFALSE;
|
|
|
- }
|
|
|
-
|
|
|
- return xReturn;
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-void vTaskSetTimeOutState( xTimeOutType * const pxTimeOut )
|
|
|
-{
|
|
|
- configASSERT( pxTimeOut );
|
|
|
- pxTimeOut->xOverflowCount = xNumOfOverflows;
|
|
|
- pxTimeOut->xTimeOnEntering = xTickCount;
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-portBASE_TYPE xTaskCheckForTimeOut( xTimeOutType * const pxTimeOut, portTickType * const pxTicksToWait )
|
|
|
-{
|
|
|
-portBASE_TYPE xReturn;
|
|
|
-
|
|
|
- configASSERT( pxTimeOut );
|
|
|
- configASSERT( pxTicksToWait );
|
|
|
-
|
|
|
- taskENTER_CRITICAL();
|
|
|
- {
|
|
|
- #if ( INCLUDE_vTaskSuspend == 1 )
|
|
|
- /* If INCLUDE_vTaskSuspend is set to 1 and the block time specified is
|
|
|
- the maximum block time then the task should block indefinitely, and
|
|
|
- therefore never time out. */
|
|
|
- if( *pxTicksToWait == portMAX_DELAY )
|
|
|
- {
|
|
|
- xReturn = pdFALSE;
|
|
|
- }
|
|
|
- else /* We are not blocking indefinitely, perform the checks below. */
|
|
|
- #endif
|
|
|
-
|
|
|
- if( ( xNumOfOverflows != pxTimeOut->xOverflowCount ) && ( ( portTickType ) xTickCount >= ( portTickType ) pxTimeOut->xTimeOnEntering ) )
|
|
|
- {
|
|
|
- /* The tick count is greater than the time at which vTaskSetTimeout()
|
|
|
- was called, but has also overflowed since vTaskSetTimeOut() was called.
|
|
|
- It must have wrapped all the way around and gone past us again. This
|
|
|
- passed since vTaskSetTimeout() was called. */
|
|
|
- xReturn = pdTRUE;
|
|
|
- }
|
|
|
- else if( ( ( portTickType ) ( ( portTickType ) xTickCount - ( portTickType ) pxTimeOut->xTimeOnEntering ) ) < ( portTickType ) *pxTicksToWait )
|
|
|
- {
|
|
|
- /* Not a genuine timeout. Adjust parameters for time remaining. */
|
|
|
- *pxTicksToWait -= ( ( portTickType ) xTickCount - ( portTickType ) pxTimeOut->xTimeOnEntering );
|
|
|
- vTaskSetTimeOutState( pxTimeOut );
|
|
|
- xReturn = pdFALSE;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- xReturn = pdTRUE;
|
|
|
- }
|
|
|
- }
|
|
|
- taskEXIT_CRITICAL();
|
|
|
-
|
|
|
- return xReturn;
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-void vTaskMissedYield( void )
|
|
|
-{
|
|
|
- xMissedYield = pdTRUE;
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( configUSE_TRACE_FACILITY == 1 )
|
|
|
- unsigned portBASE_TYPE uxTaskGetTaskNumber( xTaskHandle xTask )
|
|
|
- {
|
|
|
- unsigned portBASE_TYPE uxReturn;
|
|
|
- tskTCB *pxTCB;
|
|
|
-
|
|
|
- if( xTask != NULL )
|
|
|
- {
|
|
|
- pxTCB = ( tskTCB * ) xTask;
|
|
|
- uxReturn = pxTCB->uxTaskNumber;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- uxReturn = 0U;
|
|
|
- }
|
|
|
-
|
|
|
- return uxReturn;
|
|
|
- }
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( configUSE_TRACE_FACILITY == 1 )
|
|
|
- void vTaskSetTaskNumber( xTaskHandle xTask, unsigned portBASE_TYPE uxHandle )
|
|
|
- {
|
|
|
- tskTCB *pxTCB;
|
|
|
-
|
|
|
- if( xTask != NULL )
|
|
|
- {
|
|
|
- pxTCB = ( tskTCB * ) xTask;
|
|
|
- pxTCB->uxTaskNumber = uxHandle;
|
|
|
- }
|
|
|
- }
|
|
|
-#endif
|
|
|
-
|
|
|
-
|
|
|
-/*
|
|
|
- * -----------------------------------------------------------
|
|
|
- * The Idle task.
|
|
|
- * ----------------------------------------------------------
|
|
|
- *
|
|
|
- * The portTASK_FUNCTION() macro is used to allow port/compiler specific
|
|
|
- * language extensions. The equivalent prototype for this function is:
|
|
|
- *
|
|
|
- * void prvIdleTask( void *pvParameters );
|
|
|
- *
|
|
|
- */
|
|
|
-static portTASK_FUNCTION( prvIdleTask, pvParameters )
|
|
|
-{
|
|
|
- /* Stop warnings. */
|
|
|
- ( void ) pvParameters;
|
|
|
-
|
|
|
- for( ;; )
|
|
|
- {
|
|
|
- /* See if any tasks have been deleted. */
|
|
|
- prvCheckTasksWaitingTermination();
|
|
|
-
|
|
|
- #if ( configUSE_PREEMPTION == 0 )
|
|
|
- {
|
|
|
- /* If we are not using preemption we keep forcing a task switch to
|
|
|
- see if any other task has become available. If we are using
|
|
|
- preemption we don't need to do this as any task becoming available
|
|
|
- will automatically get the processor anyway. */
|
|
|
- taskYIELD();
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- #if ( ( configUSE_PREEMPTION == 1 ) && ( configIDLE_SHOULD_YIELD == 1 ) )
|
|
|
- {
|
|
|
- /* When using preemption tasks of equal priority will be
|
|
|
- timesliced. If a task that is sharing the idle priority is ready
|
|
|
- to run then the idle task should yield before the end of the
|
|
|
- timeslice.
|
|
|
-
|
|
|
- A critical region is not required here as we are just reading from
|
|
|
- the list, and an occasional incorrect value will not matter. If
|
|
|
- the ready list at the idle priority contains more than one task
|
|
|
- then a task other than the idle task is ready to execute. */
|
|
|
- if( listCURRENT_LIST_LENGTH( &( pxReadyTasksLists[ tskIDLE_PRIORITY ] ) ) > ( unsigned portBASE_TYPE ) 1 )
|
|
|
- {
|
|
|
- taskYIELD();
|
|
|
- }
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- #if ( configUSE_IDLE_HOOK == 1 )
|
|
|
- {
|
|
|
- extern void vApplicationIdleHook( void );
|
|
|
-
|
|
|
- /* Call the user defined function from within the idle task. This
|
|
|
- allows the application designer to add background functionality
|
|
|
- without the overhead of a separate task.
|
|
|
- NOTE: vApplicationIdleHook() MUST NOT, UNDER ANY CIRCUMSTANCES,
|
|
|
- CALL A FUNCTION THAT MIGHT BLOCK. */
|
|
|
- vApplicationIdleHook();
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- /* This conditional compilation should use inequality to 0, not equality
|
|
|
- to 1. This is to ensure portSUPPRESS_TICKS_AND_SLEEP() is called when
|
|
|
- user defined low power mode implementations require
|
|
|
- configUSE_TICKLESS_IDLE to be set to a value other than 1. */
|
|
|
- #if ( configUSE_TICKLESS_IDLE != 0 )
|
|
|
- {
|
|
|
- portTickType xExpectedIdleTime;
|
|
|
- /* If the expected idle time is 1 then the idle time would end at
|
|
|
- the end of the current time slice. The idle time must be at least
|
|
|
- 2 to ensure any pended ticks between this point and the tick being
|
|
|
- stopped can be legitimately stepped over when the tick suppression
|
|
|
- routines returns. */
|
|
|
- const portTickType xMinimumExpectedIdleTime = ( portTickType ) 2;
|
|
|
-
|
|
|
- /* It is not desirable to suspend then resume the scheduler on
|
|
|
- each iteration of the idle task. Therefore, a preliminary
|
|
|
- test of the expected idle time is performed without the
|
|
|
- scheduler suspended. The result here is not necessarily
|
|
|
- valid. */
|
|
|
- xExpectedIdleTime = prvGetExpectedIdleTime();
|
|
|
-
|
|
|
- if( xExpectedIdleTime >= xMinimumExpectedIdleTime )
|
|
|
- {
|
|
|
- vTaskSuspendAll();
|
|
|
- {
|
|
|
- /* Now the scheduler is suspended, the expected idle
|
|
|
- time can be sampled again, and this time its value can
|
|
|
- be used. */
|
|
|
- configASSERT( xNextTaskUnblockTime >= xTickCount );
|
|
|
- xExpectedIdleTime = prvGetExpectedIdleTime();
|
|
|
-
|
|
|
- if( xExpectedIdleTime >= xMinimumExpectedIdleTime )
|
|
|
- {
|
|
|
- portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime );
|
|
|
- }
|
|
|
- }
|
|
|
- xTaskResumeAll();
|
|
|
- }
|
|
|
- }
|
|
|
- #endif
|
|
|
- }
|
|
|
-} /*lint !e715 pvParameters is not accessed but all task functions require the same prototype. */
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-/*-----------------------------------------------------------
|
|
|
- * File private functions documented at the top of the file.
|
|
|
- *----------------------------------------------------------*/
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-static void prvInitialiseTCBVariables( tskTCB *pxTCB, const signed char * const pcName, unsigned portBASE_TYPE uxPriority, const xMemoryRegion * const xRegions, unsigned short usStackDepth )
|
|
|
-{
|
|
|
- /* Store the function name in the TCB. */
|
|
|
- #if configMAX_TASK_NAME_LEN > 1
|
|
|
- {
|
|
|
- /* Don't bring strncpy into the build unnecessarily. */
|
|
|
- strncpy( ( char * ) pxTCB->pcTaskName, ( const char * ) pcName, ( unsigned short ) configMAX_TASK_NAME_LEN );
|
|
|
- }
|
|
|
- #endif
|
|
|
- pxTCB->pcTaskName[ ( unsigned short ) configMAX_TASK_NAME_LEN - ( unsigned short ) 1 ] = ( signed char ) '\0';
|
|
|
-
|
|
|
- /* This is used as an array index so must ensure it's not too large. First
|
|
|
- remove the privilege bit if one is present. */
|
|
|
- if( uxPriority >= configMAX_PRIORITIES )
|
|
|
- {
|
|
|
- uxPriority = configMAX_PRIORITIES - ( unsigned portBASE_TYPE ) 1U;
|
|
|
- }
|
|
|
-
|
|
|
- pxTCB->uxPriority = uxPriority;
|
|
|
- #if ( configUSE_MUTEXES == 1 )
|
|
|
- {
|
|
|
- pxTCB->uxBasePriority = uxPriority;
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- vListInitialiseItem( &( pxTCB->xGenericListItem ) );
|
|
|
- vListInitialiseItem( &( pxTCB->xEventListItem ) );
|
|
|
-
|
|
|
- /* Set the pxTCB as a link back from the xListItem. This is so we can get
|
|
|
- back to the containing TCB from a generic item in a list. */
|
|
|
- listSET_LIST_ITEM_OWNER( &( pxTCB->xGenericListItem ), pxTCB );
|
|
|
-
|
|
|
- /* Event lists are always in priority order. */
|
|
|
- listSET_LIST_ITEM_VALUE( &( pxTCB->xEventListItem ), configMAX_PRIORITIES - ( portTickType ) uxPriority );
|
|
|
- listSET_LIST_ITEM_OWNER( &( pxTCB->xEventListItem ), pxTCB );
|
|
|
-
|
|
|
- #if ( portCRITICAL_NESTING_IN_TCB == 1 )
|
|
|
- {
|
|
|
- pxTCB->uxCriticalNesting = ( unsigned portBASE_TYPE ) 0U;
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- #if ( configUSE_APPLICATION_TASK_TAG == 1 )
|
|
|
- {
|
|
|
- pxTCB->pxTaskTag = NULL;
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- #if ( configGENERATE_RUN_TIME_STATS == 1 )
|
|
|
- {
|
|
|
- pxTCB->ulRunTimeCounter = 0UL;
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- #if ( portUSING_MPU_WRAPPERS == 1 )
|
|
|
- {
|
|
|
- vPortStoreTaskMPUSettings( &( pxTCB->xMPUSettings ), xRegions, pxTCB->pxStack, usStackDepth );
|
|
|
- }
|
|
|
- #else
|
|
|
- {
|
|
|
- ( void ) xRegions;
|
|
|
- ( void ) usStackDepth;
|
|
|
- }
|
|
|
- #endif
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( portUSING_MPU_WRAPPERS == 1 )
|
|
|
-
|
|
|
- void vTaskAllocateMPURegions( xTaskHandle xTaskToModify, const xMemoryRegion * const xRegions )
|
|
|
- {
|
|
|
- tskTCB *pxTCB;
|
|
|
-
|
|
|
- if( xTaskToModify == pxCurrentTCB )
|
|
|
- {
|
|
|
- xTaskToModify = NULL;
|
|
|
- }
|
|
|
-
|
|
|
- /* If null is passed in here then we are deleting ourselves. */
|
|
|
- pxTCB = prvGetTCBFromHandle( xTaskToModify );
|
|
|
-
|
|
|
- vPortStoreTaskMPUSettings( &( pxTCB->xMPUSettings ), xRegions, NULL, 0 );
|
|
|
- }
|
|
|
- /*-----------------------------------------------------------*/
|
|
|
-#endif
|
|
|
-
|
|
|
-static void prvInitialiseTaskLists( void )
|
|
|
-{
|
|
|
-unsigned portBASE_TYPE uxPriority;
|
|
|
-
|
|
|
- for( uxPriority = ( unsigned portBASE_TYPE ) 0U; uxPriority < configMAX_PRIORITIES; uxPriority++ )
|
|
|
- {
|
|
|
- vListInitialise( ( xList * ) &( pxReadyTasksLists[ uxPriority ] ) );
|
|
|
- }
|
|
|
-
|
|
|
- vListInitialise( ( xList * ) &xDelayedTaskList1 );
|
|
|
- vListInitialise( ( xList * ) &xDelayedTaskList2 );
|
|
|
- vListInitialise( ( xList * ) &xPendingReadyList );
|
|
|
-
|
|
|
- #if ( INCLUDE_vTaskDelete == 1 )
|
|
|
- {
|
|
|
- vListInitialise( ( xList * ) &xTasksWaitingTermination );
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- #if ( INCLUDE_vTaskSuspend == 1 )
|
|
|
- {
|
|
|
- vListInitialise( ( xList * ) &xSuspendedTaskList );
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- /* Start with pxDelayedTaskList using list1 and the pxOverflowDelayedTaskList
|
|
|
- using list2. */
|
|
|
- pxDelayedTaskList = &xDelayedTaskList1;
|
|
|
- pxOverflowDelayedTaskList = &xDelayedTaskList2;
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-static void prvCheckTasksWaitingTermination( void )
|
|
|
-{
|
|
|
- #if ( INCLUDE_vTaskDelete == 1 )
|
|
|
- {
|
|
|
- portBASE_TYPE xListIsEmpty;
|
|
|
-
|
|
|
- /* ucTasksDeleted is used to prevent vTaskSuspendAll() being called
|
|
|
- too often in the idle task. */
|
|
|
- while( uxTasksDeleted > ( unsigned portBASE_TYPE ) 0U )
|
|
|
- {
|
|
|
- vTaskSuspendAll();
|
|
|
- xListIsEmpty = listLIST_IS_EMPTY( &xTasksWaitingTermination );
|
|
|
- xTaskResumeAll();
|
|
|
-
|
|
|
- if( xListIsEmpty == pdFALSE )
|
|
|
- {
|
|
|
- tskTCB *pxTCB;
|
|
|
-
|
|
|
- taskENTER_CRITICAL();
|
|
|
- {
|
|
|
- pxTCB = ( tskTCB * ) listGET_OWNER_OF_HEAD_ENTRY( ( ( xList * ) &xTasksWaitingTermination ) );
|
|
|
- uxListRemove( &( pxTCB->xGenericListItem ) );
|
|
|
- --uxCurrentNumberOfTasks;
|
|
|
- --uxTasksDeleted;
|
|
|
- }
|
|
|
- taskEXIT_CRITICAL();
|
|
|
-
|
|
|
- prvDeleteTCB( pxTCB );
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- #endif
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-static void prvAddCurrentTaskToDelayedList( portTickType xTimeToWake )
|
|
|
-{
|
|
|
- /* The list item will be inserted in wake time order. */
|
|
|
- listSET_LIST_ITEM_VALUE( &( pxCurrentTCB->xGenericListItem ), xTimeToWake );
|
|
|
-
|
|
|
- if( xTimeToWake < xTickCount )
|
|
|
- {
|
|
|
- /* Wake time has overflowed. Place this item in the overflow list. */
|
|
|
- vListInsert( ( xList * ) pxOverflowDelayedTaskList, ( xListItem * ) &( pxCurrentTCB->xGenericListItem ) );
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* The wake time has not overflowed, so we can use the current block list. */
|
|
|
- vListInsert( ( xList * ) pxDelayedTaskList, ( xListItem * ) &( pxCurrentTCB->xGenericListItem ) );
|
|
|
-
|
|
|
- /* If the task entering the blocked state was placed at the head of the
|
|
|
- list of blocked tasks then xNextTaskUnblockTime needs to be updated
|
|
|
- too. */
|
|
|
- if( xTimeToWake < xNextTaskUnblockTime )
|
|
|
- {
|
|
|
- xNextTaskUnblockTime = xTimeToWake;
|
|
|
- }
|
|
|
- }
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-static tskTCB *prvAllocateTCBAndStack( unsigned short usStackDepth, portSTACK_TYPE *puxStackBuffer )
|
|
|
-{
|
|
|
-tskTCB *pxNewTCB;
|
|
|
-
|
|
|
- /* Allocate space for the TCB. Where the memory comes from depends on
|
|
|
- the implementation of the port malloc function. */
|
|
|
- pxNewTCB = ( tskTCB * ) pvPortMalloc( sizeof( tskTCB ) );
|
|
|
-
|
|
|
- if( pxNewTCB != NULL )
|
|
|
- {
|
|
|
- /* Allocate space for the stack used by the task being created.
|
|
|
- The base of the stack memory stored in the TCB so the task can
|
|
|
- be deleted later if required. */
|
|
|
- pxNewTCB->pxStack = ( portSTACK_TYPE * ) pvPortMallocAligned( ( ( ( size_t )usStackDepth ) * sizeof( portSTACK_TYPE ) ), puxStackBuffer );
|
|
|
-
|
|
|
- if( pxNewTCB->pxStack == NULL )
|
|
|
- {
|
|
|
- /* Could not allocate the stack. Delete the allocated TCB. */
|
|
|
- vPortFree( pxNewTCB );
|
|
|
- pxNewTCB = NULL;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* Just to help debugging. */
|
|
|
- memset( pxNewTCB->pxStack, ( int ) tskSTACK_FILL_BYTE, ( size_t ) usStackDepth * sizeof( portSTACK_TYPE ) );
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return pxNewTCB;
|
|
|
-}
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( configUSE_TRACE_FACILITY == 1 )
|
|
|
-
|
|
|
- static void prvListTaskWithinSingleList( const signed char *pcWriteBuffer, xList *pxList, signed char cStatus )
|
|
|
- {
|
|
|
- volatile tskTCB *pxNextTCB, *pxFirstTCB;
|
|
|
- unsigned short usStackRemaining;
|
|
|
- PRIVILEGED_DATA static char pcStatusString[ configMAX_TASK_NAME_LEN + 30 ];
|
|
|
-
|
|
|
- /* Write the details of all the TCB's in pxList into the buffer. */
|
|
|
- listGET_OWNER_OF_NEXT_ENTRY( pxFirstTCB, pxList );
|
|
|
- do
|
|
|
- {
|
|
|
- listGET_OWNER_OF_NEXT_ENTRY( pxNextTCB, pxList );
|
|
|
- #if ( portSTACK_GROWTH > 0 )
|
|
|
- {
|
|
|
- usStackRemaining = usTaskCheckFreeStackSpace( ( unsigned char * ) pxNextTCB->pxEndOfStack );
|
|
|
- }
|
|
|
- #else
|
|
|
- {
|
|
|
- usStackRemaining = usTaskCheckFreeStackSpace( ( unsigned char * ) pxNextTCB->pxStack );
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- sprintf( pcStatusString, ( char * ) "%s\t\t%c\t%u\t%u\t%u\r\n", pxNextTCB->pcTaskName, cStatus, ( unsigned int ) pxNextTCB->uxPriority, ( unsigned int ) usStackRemaining, ( unsigned int ) pxNextTCB->uxTCBNumber );
|
|
|
- strcat( ( char * ) pcWriteBuffer, ( char * ) pcStatusString );
|
|
|
-
|
|
|
- } while( pxNextTCB != pxFirstTCB );
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( configGENERATE_RUN_TIME_STATS == 1 )
|
|
|
-
|
|
|
- static void prvGenerateRunTimeStatsForTasksInList( const signed char *pcWriteBuffer, xList *pxList, unsigned long ulTotalRunTime )
|
|
|
- {
|
|
|
- volatile tskTCB *pxNextTCB, *pxFirstTCB;
|
|
|
- unsigned long ulStatsAsPercentage;
|
|
|
-
|
|
|
- /* Write the run time stats of all the TCB's in pxList into the buffer. */
|
|
|
- listGET_OWNER_OF_NEXT_ENTRY( pxFirstTCB, pxList );
|
|
|
- do
|
|
|
- {
|
|
|
- /* Get next TCB in from the list. */
|
|
|
- listGET_OWNER_OF_NEXT_ENTRY( pxNextTCB, pxList );
|
|
|
-
|
|
|
- /* Divide by zero check. */
|
|
|
- if( ulTotalRunTime > 0UL )
|
|
|
- {
|
|
|
- /* Has the task run at all? */
|
|
|
- if( pxNextTCB->ulRunTimeCounter == 0UL )
|
|
|
- {
|
|
|
- /* The task has used no CPU time at all. */
|
|
|
- sprintf( pcStatsString, ( char * ) "%s\t\t0\t\t0%%\r\n", pxNextTCB->pcTaskName );
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* What percentage of the total run time has the task used?
|
|
|
- This will always be rounded down to the nearest integer.
|
|
|
- ulTotalRunTime has already been divided by 100. */
|
|
|
- ulStatsAsPercentage = pxNextTCB->ulRunTimeCounter / ulTotalRunTime;
|
|
|
-
|
|
|
- if( ulStatsAsPercentage > 0UL )
|
|
|
- {
|
|
|
- #ifdef portLU_PRINTF_SPECIFIER_REQUIRED
|
|
|
- {
|
|
|
- sprintf( pcStatsString, ( char * ) "%s\t\t%lu\t\t%lu%%\r\n", pxNextTCB->pcTaskName, pxNextTCB->ulRunTimeCounter, ulStatsAsPercentage );
|
|
|
- }
|
|
|
- #else
|
|
|
- {
|
|
|
- /* sizeof( int ) == sizeof( long ) so a smaller
|
|
|
- printf() library can be used. */
|
|
|
- sprintf( pcStatsString, ( char * ) "%s\t\t%u\t\t%u%%\r\n", pxNextTCB->pcTaskName, ( unsigned int ) pxNextTCB->ulRunTimeCounter, ( unsigned int ) ulStatsAsPercentage );
|
|
|
- }
|
|
|
- #endif
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* If the percentage is zero here then the task has
|
|
|
- consumed less than 1% of the total run time. */
|
|
|
- #ifdef portLU_PRINTF_SPECIFIER_REQUIRED
|
|
|
- {
|
|
|
- sprintf( pcStatsString, ( char * ) "%s\t\t%lu\t\t<1%%\r\n", pxNextTCB->pcTaskName, pxNextTCB->ulRunTimeCounter );
|
|
|
- }
|
|
|
- #else
|
|
|
- {
|
|
|
- /* sizeof( int ) == sizeof( long ) so a smaller
|
|
|
- printf() library can be used. */
|
|
|
- sprintf( pcStatsString, ( char * ) "%s\t\t%u\t\t<1%%\r\n", pxNextTCB->pcTaskName, ( unsigned int ) pxNextTCB->ulRunTimeCounter );
|
|
|
- }
|
|
|
- #endif
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- strcat( ( char * ) pcWriteBuffer, ( char * ) pcStatsString );
|
|
|
- }
|
|
|
-
|
|
|
- } while( pxNextTCB != pxFirstTCB );
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( ( configUSE_TRACE_FACILITY == 1 ) || ( INCLUDE_uxTaskGetStackHighWaterMark == 1 ) )
|
|
|
-
|
|
|
- static unsigned short usTaskCheckFreeStackSpace( const unsigned char * pucStackByte )
|
|
|
- {
|
|
|
- register unsigned short usCount = 0U;
|
|
|
-
|
|
|
- while( *pucStackByte == tskSTACK_FILL_BYTE )
|
|
|
- {
|
|
|
- pucStackByte -= portSTACK_GROWTH;
|
|
|
- usCount++;
|
|
|
- }
|
|
|
-
|
|
|
- usCount /= sizeof( portSTACK_TYPE );
|
|
|
-
|
|
|
- return usCount;
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( INCLUDE_uxTaskGetStackHighWaterMark == 1 )
|
|
|
-
|
|
|
- unsigned portBASE_TYPE uxTaskGetStackHighWaterMark( xTaskHandle xTask )
|
|
|
- {
|
|
|
- tskTCB *pxTCB;
|
|
|
- unsigned char *pcEndOfStack;
|
|
|
- unsigned portBASE_TYPE uxReturn;
|
|
|
-
|
|
|
- pxTCB = prvGetTCBFromHandle( xTask );
|
|
|
-
|
|
|
- #if portSTACK_GROWTH < 0
|
|
|
- {
|
|
|
- pcEndOfStack = ( unsigned char * ) pxTCB->pxStack;
|
|
|
- }
|
|
|
- #else
|
|
|
- {
|
|
|
- pcEndOfStack = ( unsigned char * ) pxTCB->pxEndOfStack;
|
|
|
- }
|
|
|
- #endif
|
|
|
-
|
|
|
- uxReturn = ( unsigned portBASE_TYPE ) usTaskCheckFreeStackSpace( pcEndOfStack );
|
|
|
-
|
|
|
- return uxReturn;
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( INCLUDE_vTaskDelete == 1 )
|
|
|
-
|
|
|
- static void prvDeleteTCB( tskTCB *pxTCB )
|
|
|
- {
|
|
|
- /* This call is required specifically for the TriCore port. It must be
|
|
|
- above the vPortFree() calls. The call is also used by ports/demos that
|
|
|
- want to allocate and clean RAM statically. */
|
|
|
- portCLEAN_UP_TCB( pxTCB );
|
|
|
-
|
|
|
- /* Free up the memory allocated by the scheduler for the task. It is up to
|
|
|
- the task to free any memory allocated at the application level. */
|
|
|
- vPortFreeAligned( pxTCB->pxStack );
|
|
|
- vPortFree( pxTCB );
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-
|
|
|
-
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( ( INCLUDE_xTaskGetCurrentTaskHandle == 1 ) || ( configUSE_MUTEXES == 1 ) )
|
|
|
-
|
|
|
- xTaskHandle xTaskGetCurrentTaskHandle( void )
|
|
|
- {
|
|
|
- xTaskHandle xReturn;
|
|
|
-
|
|
|
- /* A critical section is not required as this is not called from
|
|
|
- an interrupt and the current TCB will always be the same for any
|
|
|
- individual execution thread. */
|
|
|
- xReturn = pxCurrentTCB;
|
|
|
-
|
|
|
- return xReturn;
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( ( INCLUDE_xTaskGetSchedulerState == 1 ) || ( configUSE_TIMERS == 1 ) )
|
|
|
-
|
|
|
- portBASE_TYPE xTaskGetSchedulerState( void )
|
|
|
- {
|
|
|
- portBASE_TYPE xReturn;
|
|
|
-
|
|
|
- if( xSchedulerRunning == pdFALSE )
|
|
|
- {
|
|
|
- xReturn = taskSCHEDULER_NOT_STARTED;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- if( uxSchedulerSuspended == ( unsigned portBASE_TYPE ) pdFALSE )
|
|
|
- {
|
|
|
- xReturn = taskSCHEDULER_RUNNING;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- xReturn = taskSCHEDULER_SUSPENDED;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return xReturn;
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( configUSE_MUTEXES == 1 )
|
|
|
-
|
|
|
- void vTaskPriorityInherit( xTaskHandle * const pxMutexHolder )
|
|
|
- {
|
|
|
- tskTCB * const pxTCB = ( tskTCB * ) pxMutexHolder;
|
|
|
-
|
|
|
- /* If the mutex was given back by an interrupt while the queue was
|
|
|
- locked then the mutex holder might now be NULL. */
|
|
|
- if( pxMutexHolder != NULL )
|
|
|
- {
|
|
|
- if( pxTCB->uxPriority < pxCurrentTCB->uxPriority )
|
|
|
- {
|
|
|
- /* Adjust the mutex holder state to account for its new priority. */
|
|
|
- listSET_LIST_ITEM_VALUE( &( pxTCB->xEventListItem ), configMAX_PRIORITIES - ( portTickType ) pxCurrentTCB->uxPriority );
|
|
|
-
|
|
|
- /* If the task being modified is in the ready state it will need to
|
|
|
- be moved into a new list. */
|
|
|
- if( listIS_CONTAINED_WITHIN( &( pxReadyTasksLists[ pxTCB->uxPriority ] ), &( pxTCB->xGenericListItem ) ) != pdFALSE )
|
|
|
- {
|
|
|
- if( uxListRemove( ( xListItem * ) &( pxTCB->xGenericListItem ) ) == 0 )
|
|
|
- {
|
|
|
- taskRESET_READY_PRIORITY( pxTCB->uxPriority );
|
|
|
- }
|
|
|
-
|
|
|
- /* Inherit the priority before being moved into the new list. */
|
|
|
- pxTCB->uxPriority = pxCurrentTCB->uxPriority;
|
|
|
- prvAddTaskToReadyQueue( pxTCB );
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* Just inherit the priority. */
|
|
|
- pxTCB->uxPriority = pxCurrentTCB->uxPriority;
|
|
|
- }
|
|
|
-
|
|
|
- traceTASK_PRIORITY_INHERIT( pxTCB, pxCurrentTCB->uxPriority );
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( configUSE_MUTEXES == 1 )
|
|
|
-
|
|
|
- void vTaskPriorityDisinherit( xTaskHandle * const pxMutexHolder )
|
|
|
- {
|
|
|
- tskTCB * const pxTCB = ( tskTCB * ) pxMutexHolder;
|
|
|
-
|
|
|
- if( pxMutexHolder != NULL )
|
|
|
- {
|
|
|
- if( pxTCB->uxPriority != pxTCB->uxBasePriority )
|
|
|
- {
|
|
|
- /* We must be the running task to be able to give the mutex back.
|
|
|
- Remove ourselves from the ready list we currently appear in. */
|
|
|
- if( uxListRemove( ( xListItem * ) &( pxTCB->xGenericListItem ) ) == 0 )
|
|
|
- {
|
|
|
- taskRESET_READY_PRIORITY( pxTCB->uxPriority );
|
|
|
- }
|
|
|
-
|
|
|
- /* Disinherit the priority before adding the task into the new
|
|
|
- ready list. */
|
|
|
- traceTASK_PRIORITY_DISINHERIT( pxTCB, pxTCB->uxBasePriority );
|
|
|
- pxTCB->uxPriority = pxTCB->uxBasePriority;
|
|
|
- listSET_LIST_ITEM_VALUE( &( pxTCB->xEventListItem ), configMAX_PRIORITIES - ( portTickType ) pxTCB->uxPriority );
|
|
|
- prvAddTaskToReadyQueue( pxTCB );
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( portCRITICAL_NESTING_IN_TCB == 1 )
|
|
|
-
|
|
|
- void vTaskEnterCritical( void )
|
|
|
- {
|
|
|
- portDISABLE_INTERRUPTS();
|
|
|
-
|
|
|
- if( xSchedulerRunning != pdFALSE )
|
|
|
- {
|
|
|
- ( pxCurrentTCB->uxCriticalNesting )++;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-#if ( portCRITICAL_NESTING_IN_TCB == 1 )
|
|
|
-
|
|
|
- void vTaskExitCritical( void )
|
|
|
- {
|
|
|
- if( xSchedulerRunning != pdFALSE )
|
|
|
- {
|
|
|
- if( pxCurrentTCB->uxCriticalNesting > 0U )
|
|
|
- {
|
|
|
- ( pxCurrentTCB->uxCriticalNesting )--;
|
|
|
-
|
|
|
- if( pxCurrentTCB->uxCriticalNesting == 0U )
|
|
|
- {
|
|
|
- portENABLE_INTERRUPTS();
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
-/*-----------------------------------------------------------*/
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|