[bug fixed] add mutex values' overflow-check code
* 2020-07-29 Meco Man fix thread->event_set/event_info when received an
* event without pending
* 2020-10-11 Meco Man add semaphore values' overflow-check code
- * in the function of rt_sem_release
+ * 2020-10-21 Meco Man add mutex values' overflow-check code
*/
#include <rtthread.h>
@@ -696,11 +696,19 @@ rt_err_t rt_mutex_take(rt_mutex_t mutex, rt_int32_t time)
thread->error = RT_EOK;
if (mutex->owner == thread)
+ {
+ if(mutex->hold < 255u)
{
/* it's the same thread */
mutex->hold ++;
}
else
+ {
+ rt_hw_interrupt_enable(temp); /* enable interrupt */
+ return -RT_EFULL; /* value overflowed */
+ }
+ }
+ else
{
#ifdef RT_USING_SIGNALS
__again:
