zephyr

History

Peter Mitsis 4eae500445 mutex: Simplify task_mutex_lock() API family Changes the mutex API so that the timeout parameter must be specified when invoking task_mutex_lock() thereby obsoleting the following APIs: task_mutex_lock_wait() task_mutex_lock_wait_timeout() _task_mutex_lock() Change-Id: I15d4bddbdc2707b3cbdab672498170da1c47b8db Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>		2016-02-05 20:25:05 -05:00
..
src	mutex: Simplify task_mutex_lock() API family	2016-02-05 20:25:05 -05:00
Makefile	qemu: Creation of QEMU specific platforms	2016-02-05 20:24:56 -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
prj.mdef	Rename VPF files to use MDEF file extension	2016-02-05 20:14:15 -05:00
README.txt	Update Title in sample project README.txt files	2016-02-05 20:15:21 -05:00
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 microkernel task groups,
Mutex APIs and timer drivers from multiple (6) tasks.

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
states.

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

Building and Running Project:

This microkernel 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) tasks
of differing priorities and the nanokernel semaphores and timers.