Quality RTOS & Embedded Software

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




Loading

usCriticalNesting - Preemptive Mode

Posted by ian on August 19, 2007
Do I really need to store the usCriticalNesting variable on the stack for each task if i'm only using the preemptive mode?

When using preemptive mode it seems that this variable can only ever have a vaule of zero when interrupts are enabled. Whenever it is in use (i.e. it's value is not zero) interrupts are disabled and therefore a task switch cannot occur, meaning there is no need to store a copy on the stack.

Or am I missing something...

RE: usCriticalNesting - Preemptive Mode

Posted by Dave on August 19, 2007
See this post https://sourceforge.net/forum/message.php?msg_id=4399221

This should be added as an FAQ.


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




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

Latest News

FreeRTOS kernel V10 is available for immediate download. Now MIT licensed.


FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

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