- \ref GRAS_msg: communications are message oriented. You have to
describe all possible messages and their payload beforehand, and
can then attach callbacks to the arrival of a given kind of message.
+ - \ref GRAS_timer: this is how to program repetitive and delayed
+ tasks, not unlike cron(8) and at(1). This cannot be used to timeout
+ a function (like setitimer(2) or signal(2) games could do).
- <b>Virtualization</b>: Running both on top of the simulator and on
top of real platforms, and portability support.
- \ref GRAS_globals: The use of globals is forbidden since the
nothing, isn't it?
- \ref GRAS_ex_ping
+ - \ref GRAS_ex_timer
@{ */
/** \defgroup GRAS_dd Data description */
/** \defgroup GRAS_sock Sockets */
/** \defgroup GRAS_msg Messages */
+ /** \defgroup GRAS_timer Timers */
/** \defgroup GRAS_globals Globals */
/** \defgroup GRAS_cond Conditional execution */
\skip client
\until end_of_client
+ */
+
+/** \page GRAS_ex_timer Some timer games
+
+ <center>[\ref GRAS_API]</center>
+
+ This example fools around with the GRAS timers (\ref GRAS_timer). It is
+ mainly a regression test, since it uses almost all timer features.
+ The main program registers a repetititive task and a delayed one, and
+ then loops until the <tt>still_to_do</tt> variables of its globals reach
+ 0. The delayed task set it to 5, and the repetititive one decrease it
+ each time. Here is an example of output:
+\verbatim Initialize GRAS
+ Initialize XBT
+ [1108335471] Programming the repetitive_action with a frequency of 1.000000 sec
+ [1108335471] Programming the delayed_action for after 2.000000 sec
+ [1108335471] Have a rest
+ [1108335472] Canceling the delayed_action.
+ [1108335472] Re-programming the delayed_action for after 2.000000 sec
+ [1108335472] Repetitive_action has nothing to do yet
+ [1108335473] Repetitive_action has nothing to do yet
+ [1108335473] delayed_action setting globals->still_to_do to 5
+ [1108335474] repetitive_action decrementing globals->still_to_do. New value: 4
+ [1108335475] repetitive_action decrementing globals->still_to_do. New value: 3
+ [1108335476] repetitive_action decrementing globals->still_to_do. New value: 2
+ [1108335477] repetitive_action decrementing globals->still_to_do. New value: 1
+ [1108335478] repetitive_action decrementing globals->still_to_do. New value: 0
+ Exiting GRAS\endverbatim
- */
+ Source code:
+ - \ref GRAS_ex_timer_decl
+ - \ref GRAS_ex_timer_delay
+ - \ref GRAS_ex_timer_repeat
+ - \ref GRAS_ex_timer_main
+ \dontinclude timer.c
+
+ \section GRAS_ex_timer_decl 1. Declarations and headers
+ \skip include
+ \until my_globals
+
+ \section GRAS_ex_timer_delay 2. Source code of the delayed action
+ \skip repetitive_action
+ \until end_of_repetitive_action
+
+ \section GRAS_ex_timer_repeat 3. Source code of the repetitive action
+ \skip delayed_action
+ \until end_of_delayed_action
+
+ \section GRAS_ex_timer_main 4. Source code of main function
+ \skip client
+ \until end_of_client
+*/
