1.互斥锁添加volatile，防止被编译优化。

include/mrlib.h

@@ -77,7 +77,7 @@ void mr_object_rename(mr_object_t object, char *name);
 void mr_mutex_init(mr_mutex_t mutex);
 mr_err_t mr_mutex_take(mr_mutex_t mutex, void *owner);
 mr_err_t mr_mutex_release(mr_mutex_t mutex, void *owner);
-void *mr_mutex_get_owner(mr_mutex_t mutex);
+volatile void *mr_mutex_get_owner(mr_mutex_t mutex);
 /** @} */
 
 /**

src/kernel.c

@@ -319,7 +319,7 @@ mr_err_t mr_mutex_release(mr_mutex_t mutex, void *owner)
  *
  * @return A handle to the owner of the mutex, or MR_NULL if without owner.
  */
-void *mr_mutex_get_owner(mr_mutex_t mutex)
+volatile void *mr_mutex_get_owner(mr_mutex_t mutex)
 {
     MR_ASSERT(mutex != MR_NULL);