zephyr/samples/nanokernel/apps/philosophers
Anas Nashif 27b78e7cb2 define missing CONF_FILE in samples
CONF_FILE was dropped leaving samples build with
default options.

Change-Id: Id1a3cb06f43052fb74ed9edcc2ea275b44d2b6b4
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-02-05 20:15:27 -05:00
..
Makefile define missing CONF_FILE in samples 2016-02-05 20:15:27 -05:00
README.txt Update Title in sample project README.txt files 2016-02-05 20:15:21 -05:00
prj_arc.conf samples: remove explicit enabling of SW_ISR_TABLE/DYNAMIC 2016-02-05 20:13:45 -05:00
prj_arm.conf samples: remove explicit enabling of SW_ISR_TABLE/DYNAMIC 2016-02-05 20:13:45 -05:00
prj_x86.conf First commit 2015-04-10 16:44:37 -07:00
testcase.ini initial commit for next-gen sanity checks 2016-02-05 20:14:42 -05:00

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.