/*\r
- FreeRTOS V8.2.0rc1 - Copyright (C) 2014 Real Time Engineers Ltd.\r
- All rights reserved\r
-\r
- VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
-\r
- This file is part of the FreeRTOS distribution.\r
-\r
- FreeRTOS is free software; you can redistribute it and/or modify it under\r
- the terms of the GNU General Public License (version 2) as published by the\r
- Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
-\r
- >>! NOTE: The modification to the GPL is included to allow you to !<<\r
- >>! distribute a combined work that includes FreeRTOS without being !<<\r
- >>! obliged to provide the source code for proprietary components !<<\r
- >>! outside of the FreeRTOS kernel. !<<\r
-\r
- FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
- FOR A PARTICULAR PURPOSE. Full license text is available on the following\r
- link: http://www.freertos.org/a00114.html\r
-\r
- 1 tab == 4 spaces!\r
-\r
- ***************************************************************************\r
- * *\r
- * Having a problem? Start by reading the FAQ "My application does *\r
- * not run, what could be wrong?". Have you defined configASSERT()? *\r
- * *\r
- * http://www.FreeRTOS.org/FAQHelp.html *\r
- * *\r
- ***************************************************************************\r
-\r
- ***************************************************************************\r
- * *\r
- * FreeRTOS provides completely free yet professionally developed, *\r
- * robust, strictly quality controlled, supported, and cross *\r
- * platform software that is more than just the market leader, it *\r
- * is the industry's de facto standard. *\r
- * *\r
- * Help yourself get started quickly while simultaneously helping *\r
- * to support the FreeRTOS project by purchasing a FreeRTOS *\r
- * tutorial book, reference manual, or both: *\r
- * http://www.FreeRTOS.org/Documentation *\r
- * *\r
- ***************************************************************************\r
-\r
- ***************************************************************************\r
- * *\r
- * Investing in training allows your team to be as productive as *\r
- * possible as early as possible, lowering your overall development *\r
- * cost, and enabling you to bring a more robust product to market *\r
- * earlier than would otherwise be possible. Richard Barry is both *\r
- * the architect and key author of FreeRTOS, and so also the world's *\r
- * leading authority on what is the world's most popular real time *\r
- * kernel for deeply embedded MCU designs. Obtaining your training *\r
- * from Richard ensures your team will gain directly from his in-depth *\r
- * product knowledge and years of usage experience. Contact Real Time *\r
- * Engineers Ltd to enquire about the FreeRTOS Masterclass, presented *\r
- * by Richard Barry: http://www.FreeRTOS.org/contact\r
- * *\r
- ***************************************************************************\r
-\r
- ***************************************************************************\r
- * *\r
- * You are receiving this top quality software for free. Please play *\r
- * fair and reciprocate by reporting any suspected issues and *\r
- * participating in the community forum: *\r
- * http://www.FreeRTOS.org/support *\r
- * *\r
- * Thank you! *\r
- * *\r
- ***************************************************************************\r
-\r
- http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
- license and Real Time Engineers Ltd. contact details.\r
-\r
- http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
- including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
- compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
-\r
- http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.\r
- Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.\r
-\r
- http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
- Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS\r
- licenses offer ticketed support, indemnification and commercial middleware.\r
-\r
- http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
- engineered and independently SIL3 certified version for use in safety and\r
- mission critical applications that require provable dependability.\r
-\r
- 1 tab == 4 spaces!\r
-*/\r
-\r
-\r
-/* \r
+ * FreeRTOS Kernel V10.2.0\r
+ * Copyright (C) 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.\r
+ *\r
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of\r
+ * this software and associated documentation files (the "Software"), to deal in\r
+ * the Software without restriction, including without limitation the rights to\r
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of\r
+ * the Software, and to permit persons to whom the Software is furnished to do so,\r
+ * subject to the following conditions:\r
+ *\r
+ * The above copyright notice and this permission notice shall be included in all\r
+ * copies or substantial portions of the Software.\r
+ *\r
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS\r
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR\r
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
+ *\r
+ * http://www.FreeRTOS.org\r
+ * http://aws.amazon.com/freertos\r
+ *\r
+ * 1 tab == 4 spaces!\r
+ */\r
+\r
+\r
+/*\r
* Simple demonstration of the usage of counting semaphore.\r
*/\r
\r
#define countMAX_COUNT_VALUE ( 200 )\r
\r
/* Constants used to indicate whether or not the semaphore should have been\r
-created with its maximum count value, or its minimum count value. These \r
+created with its maximum count value, or its minimum count value. These\r
numbers are used to ensure that the pointers passed in as the task parameters\r
are valid. */\r
#define countSTART_AT_MAX_COUNT ( 0xaa )\r
* Utility function to increment the semaphore count value up from zero to\r
* countMAX_COUNT_VALUE.\r
*/\r
-static void prvIncrementSemaphoreCount( SemaphoreHandle_t xSemaphore, UBaseType_t *puxLoopCounter );\r
+static void prvIncrementSemaphoreCount( SemaphoreHandle_t xSemaphore, volatile UBaseType_t *puxLoopCounter );\r
\r
/*\r
- * Utility function to decrement the semaphore count value up from \r
+ * Utility function to decrement the semaphore count value up from\r
* countMAX_COUNT_VALUE to zero.\r
*/\r
-static void prvDecrementSemaphoreCount( SemaphoreHandle_t xSemaphore, UBaseType_t *puxLoopCounter );\r
+static void prvDecrementSemaphoreCount( SemaphoreHandle_t xSemaphore, volatile UBaseType_t *puxLoopCounter );\r
\r
/*-----------------------------------------------------------*/\r
\r
/* Set to countSTART_AT_MAX_COUNT if the semaphore should be created with\r
its count value set to its max count value, or countSTART_AT_ZERO if it\r
should have been created with its count value set to 0. */\r
- UBaseType_t uxExpectedStartCount; \r
+ UBaseType_t uxExpectedStartCount;\r
\r
/* Incremented on each cycle of the demo task. Used to detect a stalled\r
task. */\r
- UBaseType_t uxLoopCounter; \r
+ volatile UBaseType_t uxLoopCounter;\r
} xCountSemStruct;\r
\r
/* Two structures are defined, one is passed to each test task. */\r
-static volatile xCountSemStruct xParameters[ countNUM_TEST_TASKS ];\r
+static xCountSemStruct xParameters[ countNUM_TEST_TASKS ];\r
\r
/*-----------------------------------------------------------*/\r
\r
xParameters[ 1 ].uxExpectedStartCount = 0;\r
xParameters[ 1 ].uxLoopCounter = 0;\r
\r
- /* vQueueAddToRegistry() adds the semaphore to the registry, if one is\r
- in use. The registry is provided as a means for kernel aware \r
- debuggers to locate semaphores and has no purpose if a kernel aware debugger\r
- is not being used. The call to vQueueAddToRegistry() will be removed\r
- by the pre-processor if configQUEUE_REGISTRY_SIZE is not defined or is \r
- defined to be less than 1. */\r
- vQueueAddToRegistry( ( QueueHandle_t ) xParameters[ 0 ].xSemaphore, "Counting_Sem_1" );\r
- vQueueAddToRegistry( ( QueueHandle_t ) xParameters[ 1 ].xSemaphore, "Counting_Sem_2" );\r
-\r
-\r
/* Were the semaphores created? */\r
if( ( xParameters[ 0 ].xSemaphore != NULL ) || ( xParameters[ 1 ].xSemaphore != NULL ) )\r
{\r
+ /* vQueueAddToRegistry() adds the semaphore to the registry, if one is\r
+ in use. The registry is provided as a means for kernel aware\r
+ debuggers to locate semaphores and has no purpose if a kernel aware\r
+ debugger is not being used. The call to vQueueAddToRegistry() will be\r
+ removed by the pre-processor if configQUEUE_REGISTRY_SIZE is not\r
+ defined or is defined to be less than 1. */\r
+ vQueueAddToRegistry( ( QueueHandle_t ) xParameters[ 0 ].xSemaphore, "Counting_Sem_1" );\r
+ vQueueAddToRegistry( ( QueueHandle_t ) xParameters[ 1 ].xSemaphore, "Counting_Sem_2" );\r
+\r
/* Create the demo tasks, passing in the semaphore to use as the parameter. */\r
xTaskCreate( prvCountingSemaphoreTask, "CNT1", configMINIMAL_STACK_SIZE, ( void * ) &( xParameters[ 0 ] ), tskIDLE_PRIORITY, NULL );\r
- xTaskCreate( prvCountingSemaphoreTask, "CNT2", configMINIMAL_STACK_SIZE, ( void * ) &( xParameters[ 1 ] ), tskIDLE_PRIORITY, NULL ); \r
+ xTaskCreate( prvCountingSemaphoreTask, "CNT2", configMINIMAL_STACK_SIZE, ( void * ) &( xParameters[ 1 ] ), tskIDLE_PRIORITY, NULL );\r
}\r
}\r
/*-----------------------------------------------------------*/\r
\r
-static void prvDecrementSemaphoreCount( SemaphoreHandle_t xSemaphore, UBaseType_t *puxLoopCounter )\r
+static void prvDecrementSemaphoreCount( SemaphoreHandle_t xSemaphore, volatile UBaseType_t *puxLoopCounter )\r
{\r
UBaseType_t ux;\r
\r
/* We should be able to 'take' the semaphore countMAX_COUNT_VALUE times. */\r
for( ux = 0; ux < countMAX_COUNT_VALUE; ux++ )\r
{\r
+ configASSERT( uxSemaphoreGetCount( xSemaphore ) == ( countMAX_COUNT_VALUE - ux ) );\r
+\r
if( xSemaphoreTake( xSemaphore, countDONT_BLOCK ) != pdPASS )\r
{\r
/* We expected to be able to take the semaphore. */\r
taskYIELD();\r
#endif\r
\r
- /* If the semaphore count is zero then we should not be able to 'take' \r
+ /* If the semaphore count is zero then we should not be able to 'take'\r
the semaphore. */\r
+ configASSERT( uxSemaphoreGetCount( xSemaphore ) == 0 );\r
if( xSemaphoreTake( xSemaphore, countDONT_BLOCK ) == pdPASS )\r
{\r
xErrorDetected = pdTRUE;\r
}\r
/*-----------------------------------------------------------*/\r
\r
-static void prvIncrementSemaphoreCount( SemaphoreHandle_t xSemaphore, UBaseType_t *puxLoopCounter )\r
+static void prvIncrementSemaphoreCount( SemaphoreHandle_t xSemaphore, volatile UBaseType_t *puxLoopCounter )\r
{\r
UBaseType_t ux;\r
\r
- /* If the semaphore count is zero then we should not be able to 'take' \r
+ /* If the semaphore count is zero then we should not be able to 'take'\r
the semaphore. */\r
if( xSemaphoreTake( xSemaphore, countDONT_BLOCK ) == pdPASS )\r
{\r
/* We should be able to 'give' the semaphore countMAX_COUNT_VALUE times. */\r
for( ux = 0; ux < countMAX_COUNT_VALUE; ux++ )\r
{\r
+ configASSERT( uxSemaphoreGetCount( xSemaphore ) == ux );\r
+\r
if( xSemaphoreGive( xSemaphore ) != pdPASS )\r
{\r
/* We expected to be able to take the semaphore. */\r
\r
#ifdef USE_STDIO\r
void vPrintDisplayMessage( const char * const * ppcMessageToSend );\r
- \r
+\r
const char * const pcTaskStartMsg = "Counting semaphore demo started.\r\n";\r
\r
/* Queue a message for printing to say the task has started. */\r
projects / freertos / blobdiff