[Kernel] rt_thread_handle_sig will clear signal_state always.

rt_thread_handle_sig function will clean signal bit in state of thread
always.

src/scheduler.c

@@ -234,7 +234,7 @@ void rt_schedule(void)
 
             if (rt_interrupt_nest == 0)
             {
-                extern void rt_thread_handle_sig(rt_bool_t clean_state);
+                extern void rt_thread_handle_sig(void);
 
                 rt_hw_context_switch((rt_uint32_t)&from_thread->sp,
                                      (rt_uint32_t)&to_thread->sp);
@@ -243,9 +243,10 @@ void rt_schedule(void)
                 rt_hw_interrupt_enable(level);
 
 #ifdef RT_USING_SIGNALS
-                /* check signal status */
-                rt_thread_handle_sig(RT_TRUE);
+                /* handle signal */
+                rt_thread_handle_sig();
 #endif
+                return ;
             }
             else
             {
@@ -253,21 +254,12 @@ void rt_schedule(void)
 
                 rt_hw_context_switch_interrupt((rt_uint32_t)&from_thread->sp,
                                                (rt_uint32_t)&to_thread->sp);
-                /* enable interrupt */
-                rt_hw_interrupt_enable(level);
             }
         }
-        else
-        {
-            /* enable interrupt */
-            rt_hw_interrupt_enable(level);
-        }
-    }
-    else
-    {
-        /* enable interrupt */
-        rt_hw_interrupt_enable(level);
     }
+
+    /* enable interrupt */
+    rt_hw_interrupt_enable(level);
 }
 
 /*

src/signal.c

@@ -38,7 +38,7 @@ struct siginfo_node
 
 static struct rt_mempool *_rt_siginfo_pool;
 static void _signal_deliver(rt_thread_t tid);
-void rt_thread_handle_sig(rt_bool_t clean_state);
+void rt_thread_handle_sig(void);
 
 static void _signal_default_handler(int signo)
 {
@@ -60,7 +60,7 @@ static void _signal_entry(void *parameter)
         {
             rt_hw_interrupt_enable(level);
             /* handle signal */
-            rt_thread_handle_sig(RT_FALSE);
+            rt_thread_handle_sig();
         }
         else break;
     }
@@ -70,9 +70,6 @@ static void _signal_entry(void *parameter)
     tid->sig_ret = RT_NULL;
 
     LOG_D("switch back to: 0x%08x", tid->sp);
-    tid->stat &= ~RT_THREAD_STAT_SIGNAL;
-
-    /* return to thread */
     rt_hw_context_switch_to((rt_uint32_t) & (tid->sp));
 }
 
@@ -121,7 +118,7 @@ static void _signal_deliver(rt_thread_t tid)
             rt_hw_interrupt_enable(level);
 
             /* do signal action in self thread context */
-            rt_thread_handle_sig(RT_TRUE);
+            rt_thread_handle_sig();
         }
         else if (!((tid->stat & RT_THREAD_STAT_SIGNAL_MASK) & RT_THREAD_STAT_SIGNAL))
         {
@@ -325,7 +322,7 @@ __done_return:
     return ret;
 }
 
-void rt_thread_handle_sig(rt_bool_t clean_state)
+void rt_thread_handle_sig(void)
 {
     rt_base_t level;
 
@@ -369,11 +366,8 @@ void rt_thread_handle_sig(rt_bool_t clean_state)
                 tid->error = error;
             }
 
-            /* whether clean signal status */
-            if (clean_state == RT_TRUE)
-            {
-                tid->stat &= ~RT_THREAD_STAT_SIGNAL;
-            }
+            /* clean state */
+            tid->stat &= ~RT_THREAD_STAT_SIGNAL;
         }
     }
     rt_hw_interrupt_enable(level);