Quality RTOS & Embedded Software

 Real time embedded FreeRTOS RSS feed 
Real time embedded FreeRTOS mailing list 
Quick Start Supported MCUs PDF Books Trace Tools Ecosystem TCP & FAT Training




Loading

FreeRTOS List

Posted by sindhukrishna on February 17, 2015

Hello FreeRTOS Team !

I understood that each task state(ready, suspended and blocked) except Running state has List. What is the purpose of Termination List?

Please explain the Generic List and Event List.

Can you share a Scheduling State Machine including the list structures?

Thanks in advance !


FreeRTOS List

Posted by davedoors on February 17, 2015

When a task is deleted it is placed in the termination list ready for clean up by the idle task. So tasks get added to the termination list when they are deleted, and removed from the termination list when the idle task frees the memory they were using.


FreeRTOS List

Posted by sindhukrishna on February 19, 2015

Thank you Dave.

What is Generic List and Event List?


FreeRTOS List

Posted by rtel on February 19, 2015

The generic list item gets used for several things, but would be more usefully named the state list item as the state of the task depends on the list from which it is referenced (for example, if it is referenced from one of the ready lists, then it is in the Ready state).

The event list item is used to pend the task on events, so if the task is waiting for data to arrive on a queue its event list is referenced from the queues list of tasks waiting to receive.

Regards.


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




Copyright (C) 2004-2010 Richard Barry. Copyright (C) 2010-2016 Real Time Engineers Ltd.
Any and all data, files, source code, html content and documentation included in the FreeRTOSTM distribution or available on this site are the exclusive property of Real Time Engineers Ltd.. See the files license.txt (included in the distribution) and this copyright notice for more information. FreeRTOSTM and FreeRTOS.orgTM are trade marks of Real Time Engineers Ltd.

Latest News:

FreeRTOS V9.0.0 is now available for download.


Free TCP/IP and file system demos for the RTOS


Sponsored Links

⇓ Now With No Code Size Limit! ⇓
⇑ Free Download Without Registering ⇑


FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

Renesas Electronics Gold Alliance RTOS Partner.jpg

Microchip Premier RTOS Partner

RTOS partner of NXP for all NXP ARM microcontrollers

Atmel RTOS partner supporting ARM Cortex-M3 and AVR32 microcontrollers

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

Xilinx Microblaze and Zynq partner

Silicon Labs low power RTOS partner

Altera RTOS partner for Nios II and Cortex-A9 SoC

Freescale Alliance RTOS Member supporting ARM and ColdFire microcontrollers

Infineon ARM Cortex-M microcontrollers

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

Cypress RTOS partner supporting ARM Cortex-M3

Fujitsu RTOS partner supporting ARM Cortex-M3 and FM3

Microsemi (previously Actel) RTOS partner supporting ARM Cortex-M3

Atollic Partner

IAR Partner

Keil ARM Partner

Embedded Artists