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rtos-view.md

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title RTOS Object Views
ms.date 07/12/2022
description RTOS View that allows users to view RTOS data of their application.
author gcampbell-msft
ms.author gcampbell
monikerRange >=msvc-170

RTOS (Real time operating system) Object View

Overview

The RTOS Object View allows users to view various components of an RTOS while debugging their application.

Visual Studio

RTOS View in VS

Visual Studio Code

RTOS View in VSCode

Supported RTOSes and their supported object types

  • Azure RTOS (ThreadX)
    • Block pools
    • Byte pools
    • Event flags
    • Mutexes
    • Queues
    • Semaphores
    • Threads
    • Timers
  • FreeRTOS
    • Queues
    • Threads
  • Zephyr
    • Mailboxes
    • Memory slabs
    • Message queues
    • Mutexes
    • Pipes
    • Queues
    • Semaphores
    • Stacks
    • Threads
    • Timers

Usage

Use the RTOS Object View to:

  • Access memory locations of various objects.
  • Access thread variables or various objects in the Watch view.

Use the arrow keys to select objects within the view. Use the Enter key to navigate to the linked content.

Configuring an embedded application for the RTOS view

The RTOS Object View will attempt to automatically display information, but setting certain build flags can allow the RTOS Object View to display additional details. The build flags are specific to the RTOS being used. The exact mechanism used to set these flags varies depending on the build system used by the project. Consult your RTOS and build system documentation for more details.

Azure RTOS (ThreadX)

All features should work by default.

FreeRTOS

  • Thread base priority is only available if configUSE_MUTEXES is enabled.
  • Thread run count is only available if configGENERATE_RUN_TIME_STATS is enabled.
  • The end address of a thread's stack space is only available if portSTACK_GROWTH or configRECORD_STACK_HIGH_ADDRESS are enabled.
  • The thread list will be retrieved faster if configMAX_PRIORITIES is set to the lowest possible value that still satisfies the application's requirements.

Zephyr

  • All thread information is only available if CONFIG_DEBUG_THREAD_INFO is enabled.
  • Thread stack usage is only availabe if CONFIG_INIT_STACKS and CONFIG_THREAD_STACK_INFO are enabled.
  • For all object types other than threads, information is only available if CONFIG_TRACING and CONFIG_TRACING_OBJECT_TRACKING are enabled.
  • The maximum usage of a memory slab is only available if CONFIG_MEM_SLAB_TRACE_MAX_UTILIZATION is enabled.
  • The list of threads waiting on an object is only available if CONFIG_WAITQ_SCALABLE is disabled.