zephyr/samples/legacy/philosophers/nanokernel
Kumar Gala d19910f685 samples/tests: reduce ram & code size for failing tests on nRF5x boards
These samples/tests fail to build on some of the nRF5x platforms.  We
don't need Bluetooth enabled for these tests so we can reduce footprint
by turning it off.

Change-Id: I87e62a1d70f80d2bc22414d6a9e591e36ad9fa06
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2017-01-10 02:23:23 +00:00
..
src
Makefile
README.txt
prj.conf samples/tests: reduce ram & code size for failing tests on nRF5x boards 2017-01-10 02:23:23 +00:00
sample.tc
testcase.ini samples: tests: tag all legacy test cases and samples 2016-11-30 21:45:22 +00:00

README.txt

Title: Dining Philosophers

Description:

An implementation of a solution to the Dining Philosophers problem
(a classic multi-thread synchronization problem).  This particular
implementation demonstrates the usage of nanokernel semaphores and
timers from multiple (6) fibers.

The philosopher always tries to get the lowest fork first (f1 then f2).
When done, he will give back the forks in the reverse order (f2 then f1).
If he gets two forks, he is EATING.  Otherwise, he is THINKING.

Each Philosopher will randomly alternate between the EATING and THINKING state.

--------------------------------------------------------------------------------

Building and Running Project:

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

    make qemu

--------------------------------------------------------------------------------

Troubleshooting:

Problems caused by out-dated project information can be addressed by
issuing one of the following commands then rebuilding the project:

    make clean          # discard results of previous builds
                        # but keep existing configuration info
or
    make pristine       # discard results of previous builds
                        # and restore pre-defined configuration info

--------------------------------------------------------------------------------

Sample Output:

Philosopher 0 EATING
Philosopher 1 THINKING
Philosopher 2 THINKING
Philosopher 3 EATING
Philosopher 4 THINKING
Philosopher 5 THINKING








Demo Description
----------------
An implementation of a solution to the Dining Philosophers problem
(a classic multi-thread synchronization problem).  This particular
implementation demonstrates the usage of multiple (6) fibers
of differing priorities and the nanokernel semaphores and timers.