zephyr

History

Peter Mitsis 5fe44f42ba Update Title in sample project README.txt files Assigns more descriptive titles to the sample project README.txt files. Change-Id: I4a0efdac481a8ed75a847871dbfe686e74a9f113 Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>		2016-02-05 20:15:21 -05:00
..
Makefile	Renames supported platform configurations	2016-02-05 20:14:39 -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.