doxygen: cleanup code for group_thread_management

The cleanup involved three parts:

- Merging the standalone "/**@{*/" into
  "@addtogroup group_thread_management"

- Changing "/**@}*/" to "/** @} group_thread_management */",
  adding the group name makes it easier to find the matching "@{" part.

- Deleting the "@addtogroup" directive in "include/rtthread.h"
  because this header file doesn't have doxygen comments.
  All doxygen comments for function bodies are defined in other .c files.

  Note, we remian two doxygen comments for rt_thread_inited_hookproto_t
  and rt_thread_idle_sethook in the "include/rtthread.h".
  rt_thread_inited_hookproto_t is really defined here.
  For rt_thread_idle_sethook, please see FIXME comment for reason.

Signed-off-by: Chen Wang <unicorn_wang@outlook.com>

include/rtdef.h

@@ -591,10 +591,9 @@ typedef void (*rt_sighandler_t)(int signo);
 
 /**
  * @addtogroup group_thread_management
+ * @{
  */
 
-/**@{*/
-
 /*
  * Thread
  */
@@ -955,7 +954,7 @@ typedef struct rt_thread *rt_thread_t;
 #define LWP_IS_USER_MODE(t) (0)
 #endif /* RT_USING_SMART */
 
-/**@}*/
+/** @} group_thread_management */
 
 /**
  * @addtogroup group_thread_comm

include/rtthread.h

@@ -131,11 +131,6 @@ void rt_timer_exit_sethook(void (*hook)(struct rt_timer *timer));
 
 /**@}*/
 
-/**
- * @addtogroup group_thread_management
- * @{
- */
-
 /*
  * thread interface
  */
@@ -187,6 +182,8 @@ void rt_thread_suspend_sethook(void (*hook)(rt_thread_t thread));
 void rt_thread_resume_sethook (void (*hook)(rt_thread_t thread));
 
 /**
+ * @ingroup group_thread_management
+ *
  * @brief Sets a hook function when a thread is initialized.
  *
  * @param thread is the target thread that initializing
@@ -201,11 +198,12 @@ RT_OBJECT_HOOKLIST_DECLARE(rt_thread_inited_hookproto_t, rt_thread_inited);
  */
 void rt_thread_idle_init(void);
 #if defined(RT_USING_HOOK) || defined(RT_USING_IDLE_HOOK)
-// FIXME: Have to write doxygen comment here for rt_thread_idle_sethook/rt_thread_idle_delhook
+// FIXME: Have to write doxygen comment here for rt_thread_idle_sethook
 //        but not in src/idle.c. Because the `rt_align(RT_ALIGN_SIZE)` in src/idle.c
-//        will make wierd output for html document generation, i.e. can not generate
-//        function link to rt_thread_idle_sethook, while function link to rt_thread_idle_delhook is ok.
+//        will make doxygen building failed.
 /**
+ * @ingroup group_thread_management
+ *
  * @brief This function sets a hook function to idle thread loop. When the system performs
  *        idle loop, this hook function should be invoked.
  *
@@ -217,14 +215,6 @@ void rt_thread_idle_init(void);
  * @note the hook function must be simple and never be blocked or suspend.
  */
 rt_err_t rt_thread_idle_sethook(void (*hook)(void));
-/**
- * @brief delete the idle hook on hook list.
- *
- * @param hook the specified hook function.
- *
- * @return `RT_EOK`: delete OK.
- *         `-RT_ENOSYS`: hook was not found.
- */
 rt_err_t rt_thread_idle_delhook(void (*hook)(void));
 #endif /* defined(RT_USING_HOOK) || defined(RT_USING_IDLE_HOOK) */
 rt_thread_t rt_thread_idle_gethandler(void);
@@ -265,8 +255,6 @@ void rt_secondary_cpu_entry(void);
 void rt_scheduler_ipi_handler(int vector, void *param);
 #endif /* RT_USING_SMP */
 
-/**@}*/
-
 /**
  * @addtogroup group_signal
  * @{

src/idle.c

@@ -79,6 +79,19 @@ rt_err_t rt_thread_idle_sethook(void (*hook)(void))
     return ret;
 }
 
+/**
+ * @addtogroup group_thread_management
+ * @{
+ */
+
+/**
+ * @brief delete the idle hook on hook list.
+ *
+ * @param hook the specified hook function.
+ *
+ * @return `RT_EOK`: delete OK.
+ *         `-RT_ENOSYS`: hook was not found.
+ */
 rt_err_t rt_thread_idle_delhook(void (*hook)(void))
 {
     rt_size_t i;
@@ -198,3 +211,5 @@ rt_thread_t rt_thread_idle_gethandler(void)
 
     return (rt_thread_t)(&idle_thread[id]);
 }
+
+/** @} group_thread_management */

src/scheduler_mp.c

@@ -1582,7 +1582,7 @@ rt_err_t rt_sched_thread_bind_cpu(struct rt_thread *thread, int cpu)
 }
 
 /**
- * @}
+ * @} group_thread_management
  *
  * @endcond
  */

src/scheduler_up.c

@@ -724,7 +724,7 @@ rt_err_t rt_sched_thread_bind_cpu(struct rt_thread *thread, int cpu)
 }
 
 /**
- * @}
+ * @} group_thread_management
  *
  * @endcond
  */

src/signal.c

@@ -579,6 +579,8 @@ void rt_thread_free_sig(rt_thread_t tid)
 }
 
 /**
+ * @ingroup group_thread_management
+ *
  * @brief    This function can be used to send any signal to any thread.
  *
  * @param    tid is a pointer to the thread that receives the signal.

src/thread.c

@@ -294,10 +294,9 @@ static rt_err_t _thread_init(struct rt_thread *thread,
 
 /**
  * @addtogroup group_thread_management
+ * @{
  */
 
-/**@{*/
-
 /**
  * @brief   This function will initialize a thread. It's used to initialize a
  *          static thread object.
@@ -1209,4 +1208,4 @@ rt_err_t rt_thread_get_name(rt_thread_t thread, char *name, rt_uint8_t name_size
 }
 RTM_EXPORT(rt_thread_get_name);
 
-/**@}*/
+/** @} group_thread_management */