zephyr

History

Anas Nashif ad8caa65e8 samples: synchronisation: run thread_b on cpu 0 in SMP mode Always run thread_b on CPU 0 by setting cpu_mask if on SMP system. Run this with CONFIG_SCHED_CPU_MASK=y set on an SMP system. Signed-off-by: Anas Nashif <anas.nashif@intel.com>		2020-10-19 10:57:15 -04:00
..
src	samples: synchronisation: run thread_b on cpu 0 in SMP mode	2020-10-19 10:57:15 -04:00
CMakeLists.txt	…
README.rst	…
prj.conf	samples: synchronisation: run thread_b on cpu 0 in SMP mode	2020-10-19 10:57:15 -04:00
sample.yaml	samples: synchronization: show cpu	2020-10-19 10:57:15 -04:00

README.rst

.. _synchronization_sample:

Synchronization Sample
######################

Overview
********

A simple application that demonstrates basic sanity of the kernel.
Two threads (A and B) take turns printing a greeting message to the console,
and use sleep requests and semaphores to control the rate at which messages
are generated. This demonstrates that kernel scheduling, communication,
and timing are operating correctly.

Building and Running
********************

This project outputs to the console.  It can be built and executed
on QEMU as follows:

.. zephyr-app-commands::
   :zephyr-app: samples/synchronization
   :host-os: unix
   :board: qemu_x86
   :goals: run
   :compact:

Sample Output
=============

.. code-block:: console

   threadA: Hello World!
   threadB: Hello World!
   threadA: Hello World!
   threadB: Hello World!
   threadA: Hello World!
   threadB: Hello World!
   threadA: Hello World!
   threadB: Hello World!
   threadA: Hello World!
   threadB: Hello World!

   <repeats endlessly>

Exit QEMU by pressing :kbd:`CTRL+A` :kbd:`x`.