2015-12-18 22:38:05 +08:00
|
|
|
Title: Synchronisation
|
2015-04-11 07:44:37 +08:00
|
|
|
|
|
|
|
Description:
|
|
|
|
|
2015-06-05 21:15:49 +08:00
|
|
|
A simple application that demonstates basic sanity of the microkernel.
|
2015-04-11 07:44:37 +08:00
|
|
|
Two tasks (A and B) take turns printing a greeting message to the console,
|
|
|
|
and use sleep requests and semaphores to control the rate at which messages
|
|
|
|
are generated. This demonstrates that microkernel scheduling, communication,
|
|
|
|
and timing are operating correctly.
|
|
|
|
|
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
|
|
|
|
Building and Running Project:
|
|
|
|
|
|
|
|
This microkernel project outputs to the console. It can be built and executed
|
|
|
|
on QEMU as follows:
|
|
|
|
|
2015-06-06 09:48:58 +08:00
|
|
|
make qemu
|
2015-04-11 07:44:37 +08:00
|
|
|
|
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
|
2015-06-01 22:30:09 +08:00
|
|
|
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
|
|
|
|
|
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
|
2015-04-11 07:44:37 +08:00
|
|
|
Sample Output:
|
|
|
|
|
|
|
|
taskA: Hello World!
|
|
|
|
taskB: Hello World!
|
|
|
|
taskA: Hello World!
|
|
|
|
taskB: Hello World!
|
|
|
|
taskA: Hello World!
|
|
|
|
taskB: Hello World!
|
|
|
|
taskA: Hello World!
|
|
|
|
taskB: Hello World!
|
|
|
|
taskA: Hello World!
|
|
|
|
taskB: Hello World!
|
|
|
|
|
|
|
|
<repeats endlessly>
|