xiaoxiang781216 commented on code in PR #7966:
URL: https://github.com/apache/nuttx/pull/7966#discussion_r1062612671
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sched/group/group_leave.c:
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@@ -408,3 +376,66 @@ void group_leave(FAR struct tcb_s *tcb)
}
#endif /* HAVE_GROUP_MEMBERS */
+
+/****************************************************************************
+ * Name: group_drop
+ *
+ * Description:
+ * Release the group's memory. This function is called whenever a reference
+ * to the group structure is released. It is not dependent on member count,
+ * but rather external references, which include:
+ * - Waiter list for waitpid()
+ * - Users of the group's address environment, which can be the group's
+ * members themselves, as well as kernel tasks whom do not have their own
+ * address environment.
+ *
+ * Input Parameters:
+ * group - The group that is to be dropped
+ *
+ * Returned Value:
+ * None.
+ *
+ * Assumptions:
+ * Called during task deletion or context switch in a safe context. No
+ * special precautions are required here.
+ *
+ ****************************************************************************/
+
+void group_drop(FAR struct task_group_s *group)
+{
+ /* Dummy initial condition */
+
+ if (0)
Review Comment:
why not work? there are many places use this trick like this:
https://github.com/apache/nuttx/blob/ec93385dfa5bda50b6175567d0949fd2ea8aa16e/fs/vfs/fs_unlink.c#L148-L152
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