mm/mm_heap/mm_sem.c: add getpid() return check in mm_trysemaphore()

Change-Id: Ifd56e3ccc22cf0a50f52e643b7a87aab0d0dca06 Signed-off-by: ligd <liguiding@fishsemi.com>
2026-05-18 08:54:05 +08:00 · 2020-04-08 16:03:01 +08:00
parent afe08b666c
commit 78eb9f73dd
1 changed files with 5 additions and 0 deletions
@@ -174,6 +174,11 @@ int mm_trysemaphore(FAR struct mm_heap_s *heap)
   * 'else', albeit with a nonsensical PID value.
   */

+  if (my_pid < 0)
+    {
+      return my_pid;
+    }
+
  /* Does the current task already hold the semaphore?  Is the current
   * task actually running?
   */