Quality RTOS & Embedded Software

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


Waiting for task

Posted by mike on February 9, 2012
I send to task some signal after receiving which another task delete itself. So how can i know that another task exited? In other words i need something like WaitForSingleObject(thread) in windows. Thanks.

RE: Waiting for task

Posted by Richard on February 11, 2012
I'm not sure I exactly understand your question, and I'm not a Windows programmer so don't know (without looking it up anyway) what WaitForWingleObject( thread ) does. However, I think you are asking how you place one task into the Blocked state until another task has deleted itself....if that is correct then:

The easiest way of doing this would be to have the task release a semaphore before calling vTaskDelete(), and have the task that was waiting block on the semaphore. You could alternatively define the traceTASK_DELETE() to do a similar thing, but that would be more complex a solution.

I would ask though, why you have a task deleting itself anyway? That should be avoided if possible as you could get into memory fragmentation issues (depending on your selected memory allocation scheme). If the task repeatedly gets created and deleted, then consider making the task persistent and instead re-using the same task over and over.


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

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

Latest News

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

Version 10.1.1 of the FreeRTOS kernel is available for immediate download. MIT licensed.

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


FreeRTOS and other embedded software careers at AWS.

FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

Espressif ESP32

IAR Partner

Microchip Premier RTOS Partner

RTOS partner of NXP for all NXP ARM microcontrollers


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