#include "cfg/cfg_signal.h"
#include "cfg/cfg_timer.h"
+#include <drv/timer.h> /* timer_clock() */
+
void event_hook_ignore(UNUSED_ARG(Event *, e))
{
}
{
sig_post((e)->Ev.Sig.sig_proc, (e)->Ev.Sig.sig_bit);
}
+
+void event_hook_generic_signal(Event *e)
+{
+ sig_postSignal(&e->Ev.SigGen.sig,
+ e->Ev.SigGen.sig_proc,
+ EVENT_GENERIC_SIGNAL);
+}
#endif
void event_hook_softint(Event *e)
void event_hook_generic(Event *e)
{
e->Ev.Gen.completed = true;
+ MEMORY_BARRIER;
}
-#if CONFIG_TIMER_EVENTS
-void event_hook_generic_timeout(Event *e)
+/**
+ * Wait for multiple events
+ *
+ * On success return the offset in the \a evs vector of the Event that
+ * happened, -1 if the timeout expires.
+ *
+ * NOTE: timeout == 0 means no timeout.
+ */
+#if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS
+int event_select(Event **evs, int n, ticks_t timeout)
+{
+ sigmask_t mask = (1 << n) - 1;
+ int i;
+
+ ASSERT(n <= SIG_USER_MAX);
+ for (i = 0; i < n; i++)
+ {
+ Event *e = evs[i];
+ /* Map each event to a distinct signal bit */
+ event_initSignal(e, proc_current(), 1 << i);
+ }
+ mask = timeout ? sig_waitTimeout(mask, timeout) : sig_wait(mask);
+ i = UINT8_LOG2(mask);
+
+ return i < n ? i : -1;
+}
+#else
+int event_select(Event **evs, int n, ticks_t timeout)
{
- e->Ev.Gen.completed = true;
+ ticks_t end = timer_clock() + timeout;
+ int i;
+
+ while (1)
+ {
+ for (i = 0; i < n; i++)
+ {
+ Event *e = evs[i];
+ if (ACCESS_SAFE(e->Ev.Gen.completed) == true)
+ {
+ e->Ev.Gen.completed = false;
+ MEMORY_BARRIER;
+ return i;
+ }
+ }
+ if (timeout && TIMER_AFTER(timer_clock(), end))
+ break;
+ cpu_relax();
+ }
+ return -1;
}
#endif