✨ feat: delete thread ref (#8456)

src/clock.c

@@ -99,20 +99,17 @@ void rt_tick_increase(void)
 
     /* check time slice */
     thread = rt_thread_self();
-    rt_get_thread_struct(thread);
     level = rt_spin_lock_irqsave(&(thread->spinlock));
     rt_atomic_sub(&(thread->remaining_tick), 1);
     if (rt_atomic_compare_exchange_strong(&(thread->remaining_tick), &oldval, thread->init_tick))
     {
         thread->stat |= RT_THREAD_STAT_YIELD;
         rt_spin_unlock_irqrestore(&(thread->spinlock), level);
-        rt_put_thread_struct(thread);
         rt_schedule();
     }
     else
     {
         rt_spin_unlock_irqrestore(&(thread->spinlock), level);
-        rt_put_thread_struct(thread);
     }
 
     /* check timer */

src/cpu.c

@@ -232,11 +232,8 @@ void rt_cpus_lock_status_restore(struct rt_thread *thread)
         {
             rt_schedule_insert_thread(pcpu->current_thread);
         }
-        rt_put_thread_struct(pcpu->current_thread);
-
     }
     pcpu->current_thread = thread;
-    rt_get_thread_struct(thread);
 }
 RTM_EXPORT(rt_cpus_lock_status_restore);
 #endif /* RT_USING_SMP */

src/idle.c

@@ -209,10 +209,6 @@ static void rt_defunct_execute(void)
             break;
         }
 
-        while (rt_atomic_load(&(thread->ref_count)))
-        {
-            rt_thread_delay(5);
-        }
 #ifdef RT_USING_MODULE
         module = (struct rt_dlmodule*)thread->parent.module_id;
         if (module)

src/thread.c

@@ -291,7 +291,7 @@ static rt_err_t _thread_init(struct rt_thread *thread,
 #ifdef RT_USING_MODULE
     thread->parent.module_id = 0;
 #endif /* RT_USING_MODULE */
-    rt_atomic_store(&thread->ref_count, 0);
+
     rt_spin_lock_init(&thread->spinlock);
 
     RT_OBJECT_HOOKLIST_CALL(rt_thread_inited, (thread));