Update setting of priority of threads to only yield when current thread's priority has been lowered

2024-10-15 15:38:31 +01:00
parent 3c1a26b668
commit 163b7f9016
1 changed files with 4 additions and 1 deletions
--- a/src/threads/thread.c
+++ b/src/threads/thread.c
@@ -357,8 +357,11 @@ void
 thread_set_priority (int new_priority) 
 {
  ASSERT (PRI_MIN <= new_priority && new_priority <= PRI_MAX);
+  int old_priority = thread_get_priority ();
+
  thread_current ()->priority = new_priority;
-  thread_yield ();
+  if (new_priority < old_priority)
+    thread_yield ();
 }

 /* Returns the current thread's priority. */