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Software for White Rabbit PTP Core
Commit d529ae44 authored by Alessandro Rubini's avatar Alessandro Rubini
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include/wrc-task: add an helper for periodic tasks 

Signed-off-by: Alessandro Rubini's avatarAlessandro Rubini <rubini@gnudd.com>
parent ed59a870
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include/wrc-task.h
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......@@ -9,7 +9,7 @@
/*
* A task is a data structure, but currently suboptimal.
* FIXME: init must return int, and both should get a pointer to data
* FIXME: provide a jiffy-based period.
* (but doing this is heavy, and forces to change the submodule too).
*/
struct wrc_task {
......@@ -23,6 +23,27 @@ struct wrc_task {
unsigned long nanos;
};
/* An helper for periodic tasks, relying on a static varible */
static inline int __task_not_yet(uint32_t *lastt, unsigned period,
uint32_t now)
{
if (!*lastt) {
*lastt = now;
return 0;
}
if (time_before(now, *lastt + period))
return 1; /* not yet */
*lastt += period;
return 0;
}
static inline int task_not_yet(uint32_t *lastt, unsigned period)
{
return __task_not_yet(lastt, period, timer_get_tics());
}
/* Put the tasks in their own section */
#define DEFINE_WRC_TASK(_name) \
static struct wrc_task __task_ ## _name \
......
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