X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fkernel%2Fao_task.c;h=e430edc6c02f3e5854b5163ebd18afc26d6c0e0e;hb=04759dddeb29e4de9f7e6b3673dc06c633fa2369;hp=bafb49439d4441022be1b9159947f30a9f8d7bff;hpb=24167015705ae831692b95735968b04a876f935e;p=fw%2Faltos

diff --git a/src/kernel/ao_task.c b/src/kernel/ao_task.c
index bafb4943..e430edc6 100644
--- a/src/kernel/ao_task.c
+++ b/src/kernel/ao_task.c
@@ -355,7 +355,6 @@ ao_yield(void) ao_arch_naked_define
 	 */
 	if (ao_cur_task->wchan == NULL)
 		ao_task_to_run_queue(ao_cur_task);
-	ao_cur_task = NULL;
 	for (;;) {
 		ao_arch_memory_barrier();
 		if (!ao_list_is_empty(&run_queue))
@@ -425,6 +424,7 @@ ao_sleep(__xdata void *wchan)
 void
 ao_wakeup(__xdata void *wchan) __reentrant
 {
+	ao_validate_cur_stack();
 #if HAS_TASK_QUEUE
 	struct ao_task	*sleep, *next;
 	struct ao_list	*sleep_queue;
@@ -442,45 +442,49 @@ ao_wakeup(__xdata void *wchan) __reentrant
 	}
 	ao_arch_irqrestore(flags);
 #else
+	{
 	uint8_t	i;
 	for (i = 0; i < ao_num_tasks; i++)
 		if (ao_tasks[i]->wchan == wchan)
 			ao_tasks[i]->wchan = NULL;
+	}
 #endif
 	ao_check_stack();
 }
 
-void
-ao_alarm(uint16_t delay)
+uint8_t
+ao_sleep_for(__xdata void *wchan, uint16_t timeout)
 {
+	uint8_t	ret;
+	if (timeout) {
 #if HAS_TASK_QUEUE
-	uint32_t flags;
-	/* Make sure we sleep *at least* delay ticks, which means adding
-	 * one to account for the fact that we may be close to the next tick
-	 */
-	flags = ao_arch_irqsave();
+		uint32_t flags;
+		/* Make sure we sleep *at least* delay ticks, which means adding
+		 * one to account for the fact that we may be close to the next tick
+		 */
+		flags = ao_arch_irqsave();
 #endif
-	if (!(ao_cur_task->alarm = ao_time() + delay + 1))
-		ao_cur_task->alarm = 1;
+		if (!(ao_cur_task->alarm = ao_time() + timeout + 1))
+			ao_cur_task->alarm = 1;
 #if HAS_TASK_QUEUE
-	ao_task_to_alarm_queue(ao_cur_task);
-	ao_arch_irqrestore(flags);
+		ao_task_to_alarm_queue(ao_cur_task);
+		ao_arch_irqrestore(flags);
 #endif
-}
-
-void
-ao_clear_alarm(void)
-{
+	}
+	ret = ao_sleep(wchan);
+	if (timeout) {
 #if HAS_TASK_QUEUE
-	uint32_t flags;
+		uint32_t flags;
 
-	flags = ao_arch_irqsave();
+		flags = ao_arch_irqsave();
 #endif
-	ao_cur_task->alarm = 0;
+		ao_cur_task->alarm = 0;
 #if HAS_TASK_QUEUE
-	ao_task_from_alarm_queue(ao_cur_task);
-	ao_arch_irqrestore(flags);
+		ao_task_from_alarm_queue(ao_cur_task);
+		ao_arch_irqrestore(flags);
 #endif
+	}
+	return ret;
 }
 
 static __xdata uint8_t ao_forever;
@@ -488,9 +492,7 @@ static __xdata uint8_t ao_forever;
 void
 ao_delay(uint16_t ticks)
 {
-	ao_alarm(ticks);
-	ao_sleep(&ao_forever);
-	ao_clear_alarm();
+	ao_sleep_for(&ao_forever, ticks);
 }
 
 void