= Hello World =

Hello world is the basic useless example. It tends to prove you have a complete working setup.

This example will print "Hello world !" message infinitely repeated (due tu DsxTasks).

== Task ==

First we will create our task and declare it.

hello.c:

{{{
#include <srl.h>
#include "hello_proto.h"

FUNC(hello) {
    srl_log_printf(NONE, "Hello world!\n");
}
}}}

Task description in dsx's API:

{{{
hello_task = TaskModel(
        'hello',
        impl = [
        SwTask('hello', stack_size = 128, sources = ['hello.c'])
        ] )
}}}

== Test under Posix ==

Let's create a task graph containing only this one.

{{{
tcg = Tcg( Task('hello', hello_task)
         )
}}}

And let's create Posix test application (and also a TopMakefile):

{{{
px = Posix()

tcg.generate(px)
TopMakefile(px)
}}}

Now we can compile and launch it.

{{{
$ make
[...]
$ ./exe.posix
Hello world!
Hello world!
Hello world!
Hello world!
Hello world!
Hello world!
Hello world!
Hello world!
^C
$ 
}}}

It works !