.. zephyr:code-sample:: posix-philosophers
:name: POSIX Philosophers
Implement a solution to the Dining Philosophers problem using the POSIX API.
Overview
********
This sample implements Zephyr's :zephyr:code-sample:`dining-philosophers` sample using the
:ref:`POSIX API <posix_support>`. The source code for this sample can be found under
:file:`samples/posix/philosophers`.
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/posix/philosophers
:host-os: unix
:board: qemu_riscv64
:goals: run
:compact:
Sample Output
=============
.. code-block:: console
Philosopher 0 [P: 3] HOLDING ONE FORK
Philosopher 1 [P: 2] HOLDING ONE FORK
Philosopher 2 [P: 1] EATING [ 1900 ms ]
Philosopher 3 [P: 0] THINKING [ 2500 ms ]
Philosopher 4 [C:-1] THINKING [ 2200 ms ]
Philosopher 5 [C:-2] THINKING [ 1700 ms ]
Exit QEMU by pressing :kbd:`CTRL+A` :kbd:`x`.
Debugging
*********
Like the original philosophers sample, the POSIX variant also enables
:kconfig:option:`CONFIG_DEBUG_THREAD_INFO` by default.
.. zephyr-app-commands::
:zephyr-app: samples/philosophers
:host-os: unix
:board: <board_name>
:goals: debug
:compact:
Additional Information
**********************
For additional information, please refer to the :zephyr:code-sample:`dining-philosophers` sample.
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