Quality RTOS & Embedded Software

 Real time embedded FreeRTOS RSS feed 
Quick Start Supported MCUs PDF Books Trace Tools Ecosystem


Loading

Delete Semaphore inside task

Posted by delphes on June 13, 2018

Dear All,

Just a quick question, does it possible to delete semaphore inside task ? my code is working but not quite sure it is safe ? does the semaphore need to be deleted after the Vtask delete (see my code following)

void myTask(void const* pArgument) { for (;;) { osSemaphoreWait(xSemaphore, osWaitForever); // do some actions vSemaphoreDelete(xSemaphore); vTaskDelete(NULL); } }

Thanks


Delete Semaphore inside task

Posted by rtel on June 13, 2018

Deleting a task does not delete the objects created by that task, so yes it is correct to delete the semaphore first.


Delete Semaphore inside task

Posted by delphes on June 13, 2018

Thanks Richard


Delete Semaphore inside task

Posted by richard_damon on June 14, 2018

One other comment, putting the vSemaphoreDelete after the call to vTaskDelete(NULL) wouldn't work, as a call to vTaskDelete(NULL) won't return, as the calling task no longer exists. It is sort of the the task equivalent to exit() (for that particular task).


[ Back to the top ]    [ About FreeRTOS ]    [ Privacy ]    [ Sitemap ]    [ ]


Copyright (C) Amazon Web Services, Inc. or its affiliates. All rights reserved.

Latest News

FreeRTOS v10.2.1 is available for immediate download. MIT licensed, includes 64-bit RISC-V, NXP Cortex-M33 demo, Nuvoton Cortex-M23 demo & STM32H745 dual core (AMP) demo.

NXP tweet showing LPC5500 (ARMv8-M Cortex-M33) running FreeRTOS.

View a recording of the "OTA Update Security and Reliability" webinar, presented by TI and AWS.


Careers

FreeRTOS and other embedded software careers at AWS.



FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

Cadence Tensilica Cortes

Espressif ESP32

IAR Partner

Microchip Premier RTOS Partner

RTOS partner of NXP for all NXP ARM microcontrollers

Mediatek

Renesas

RISC-V

SiFIve RISC-V

STMicro RTOS partner supporting ARM7, ARM Cortex-M3, ARM Cortex-M4 and ARM Cortex-M0

Texas Instruments MCU Developer Network RTOS partner for ARM and MSP430 microcontrollers

OpenRTOS and SafeRTOS

Xilinx Microblaze and Zynq partner