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-rw-r--r--src/clock.c2
-rw-r--r--src/scheduler.c15
2 files changed, 17 insertions, 0 deletions
diff --git a/src/clock.c b/src/clock.c
index a652282b6e..9b54101363 100644
--- a/src/clock.c
+++ b/src/clock.c
@@ -89,6 +89,8 @@ void rt_tick_increase(void)
/* change to initialized tick */
thread->remaining_tick = thread->init_tick;
+ thread->stat |= RT_THREAD_STAT_YIELD;
+
/* yield */
rt_thread_yield();
}
diff --git a/src/scheduler.c b/src/scheduler.c
index f671a49623..edcf11dba5 100644
--- a/src/scheduler.c
+++ b/src/scheduler.c
@@ -344,8 +344,13 @@ void rt_schedule(void)
{
to_thread = current_thread;
}
+ else if (current_thread->current_priority == highest_ready_priority && (current_thread->stat & RT_THREAD_STAT_YIELD_MASK) == 0)
+ {
+ to_thread = current_thread;
+ }
else
{
+ current_thread->stat &= ~RT_THREAD_STAT_YIELD_MASK;
rt_schedule_insert_thread(current_thread);
}
}
@@ -435,8 +440,13 @@ void rt_schedule(void)
{
to_thread = rt_current_thread;
}
+ else if (rt_current_thread->current_priority == highest_ready_priority && (rt_current_thread->stat & RT_THREAD_STAT_YIELD_MASK) == 0)
+ {
+ to_thread = rt_current_thread;
+ }
else
{
+ rt_current_thread->stat &= ~RT_THREAD_STAT_YIELD_MASK;
need_insert_from_thread = 1;
}
}
@@ -578,8 +588,13 @@ void rt_scheduler_do_irq_switch(void *context)
{
to_thread = current_thread;
}
+ else if (current_thread->current_priority == highest_ready_priority && (current_thread->stat & RT_THREAD_STAT_YIELD_MASK) == 0)
+ {
+ to_thread = current_thread;
+ }
else
{
+ current_thread->stat &= ~RT_THREAD_STAT_YIELD_MASK;
rt_schedule_insert_thread(current_thread);
}
}