[update] src/thread.c function description.
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liukangcc
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45440d2456
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48c7a455e6
201
src/thread.c
201
src/thread.c
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@ -38,12 +38,11 @@ static void (*rt_thread_resume_hook) (rt_thread_t thread);
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static void (*rt_thread_inited_hook) (rt_thread_t thread);
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/**
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* @ingroup Hook
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* This function sets a hook function when the system suspend a thread.
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* @brief This function sets a hook function when the system suspend a thread.
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*
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* @param hook the specified hook function
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* @note the hook function must be simple and never be blocked or suspend.
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*
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* @note the hook function must be simple and never be blocked or suspend.
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* @param hook the specified hook function.
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*/
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void rt_thread_suspend_sethook(void (*hook)(rt_thread_t thread))
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{
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@ -51,12 +50,11 @@ void rt_thread_suspend_sethook(void (*hook)(rt_thread_t thread))
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}
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/**
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* @ingroup Hook
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* This function sets a hook function when the system resume a thread.
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* @brief This function sets a hook function when the system resume a thread.
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*
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* @param hook the specified hook function
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* @note the hook function must be simple and never be blocked or suspend.
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*
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* @note the hook function must be simple and never be blocked or suspend.
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* @param hook the specified hook function.
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*/
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void rt_thread_resume_sethook(void (*hook)(rt_thread_t thread))
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{
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@ -64,10 +62,9 @@ void rt_thread_resume_sethook(void (*hook)(rt_thread_t thread))
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}
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/**
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* @ingroup Hook
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* This function sets a hook function when a thread is initialized.
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* @brief This function sets a hook function when a thread is initialized.
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*
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* @param hook the specified hook function
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* @param hook the specified hook function.
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*/
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void rt_thread_inited_sethook(void (*hook)(rt_thread_t thread))
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{
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@ -76,7 +73,6 @@ void rt_thread_inited_sethook(void (*hook)(rt_thread_t thread))
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#endif /* RT_USING_HOOK */
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/* must be invoke witch rt_hw_interrupt_disable */
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static void _thread_cleanup_execute(rt_thread_t thread)
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{
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register rt_base_t level;
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@ -244,19 +240,27 @@ static rt_err_t _thread_init(struct rt_thread *thread,
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/**@{*/
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/**
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* This function will initialize a thread, normally it's used to initialize a
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* static thread object.
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* @brief This function will initialize a thread, normally it's used to initialize a
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* static thread object.
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*
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* @param thread the static thread object
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* @param name the name of thread, which shall be unique
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* @param entry the entry function of thread
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* @param parameter the parameter of thread enter function
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* @param stack_start the start address of thread stack
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* @param stack_size the size of thread stack
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* @param priority the priority of thread
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* @param tick the time slice if there are same priority thread
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* @param thread the static thread object.
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*
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* @return the operation status, RT_EOK on OK, -RT_ERROR on error
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* @param name the name of thread, which shall be unique.
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*
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* @param entry the entry function of thread.
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*
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* @param parameter the parameter of thread enter function.
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*
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* @param stack_start the start address of thread stack.
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*
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* @param stack_size the size of thread stack.
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*
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* @param priority the priority of thread.
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*
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* @param tick the time slice if there are same priority thread.
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*
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* @return Return the operation status. When the return value is RT_EOK, the function is successfully executed.
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* When the return value is any other values, it means this operation failed.
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*/
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rt_err_t rt_thread_init(struct rt_thread *thread,
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const char *name,
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@ -286,9 +290,9 @@ rt_err_t rt_thread_init(struct rt_thread *thread,
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RTM_EXPORT(rt_thread_init);
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/**
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* This function will return self thread object
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* @brief This function will return self thread object.
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*
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* @return the self thread object
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* @return the self thread object.
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*/
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rt_thread_t rt_thread_self(void)
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{
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@ -309,11 +313,12 @@ rt_thread_t rt_thread_self(void)
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RTM_EXPORT(rt_thread_self);
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/**
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* This function will start a thread and put it to system ready queue
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* @brief This function will start a thread and put it to system ready queue.
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*
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* @param thread the thread to be started
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* @param thread the thread to be started.
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*
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* @return the operation status, RT_EOK on OK, -RT_ERROR on error
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* @return Return the operation status. When the return value is RT_EOK, the function is successfully executed.
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* When the return value is any other values, it means this operation failed.
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*/
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rt_err_t rt_thread_startup(rt_thread_t thread)
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{
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@ -351,12 +356,13 @@ rt_err_t rt_thread_startup(rt_thread_t thread)
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RTM_EXPORT(rt_thread_startup);
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/**
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* This function will detach a thread. The thread object will be removed from
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* thread queue and detached/deleted from system object management.
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* @brief This function will detach a thread. The thread object will be removed from
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* thread queue and detached/deleted from system object management.
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*
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* @param thread the thread to be deleted
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* @param thread the thread to be deleted.
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*
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* @return the operation status, RT_EOK on OK, -RT_ERROR on error
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* @return Return the operation status. When the return value is RT_EOK, the function is successfully executed.
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* When the return value is any other values, it means this operation failed.
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*/
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rt_err_t rt_thread_detach(rt_thread_t thread)
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{
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@ -404,17 +410,22 @@ RTM_EXPORT(rt_thread_detach);
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#ifdef RT_USING_HEAP
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/**
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* This function will create a thread object and allocate thread object memory
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* and stack.
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* @brief This function will create a thread object and allocate thread object memory.
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* and stack.
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*
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* @param name the name of thread, which shall be unique
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* @param entry the entry function of thread
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* @param parameter the parameter of thread enter function
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* @param stack_size the size of thread stack
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* @param priority the priority of thread
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* @param tick the time slice if there are same priority thread
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* @param name the name of thread, which shall be unique.
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*
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* @return the created thread object
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* @param entry the entry function of thread.
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*
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* @param parameter the parameter of thread enter function.
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*
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* @param stack_size the size of thread stack.
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*
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* @param priority the priority of thread.
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*
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* @param tick the time slice if there are same priority thread.
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*
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* @return the created thread object.
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*/
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rt_thread_t rt_thread_create(const char *name,
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void (*entry)(void *parameter),
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@ -454,12 +465,13 @@ rt_thread_t rt_thread_create(const char *name,
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RTM_EXPORT(rt_thread_create);
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/**
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* This function will delete a thread. The thread object will be removed from
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* thread queue and deleted from system object management in the idle thread.
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* @brief This function will delete a thread. The thread object will be removed from
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* thread queue and deleted from system object management in the idle thread.
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*
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* @param thread the thread to be deleted
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* @param thread the thread to be deleted.
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*
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* @return the operation status, RT_EOK on OK, -RT_ERROR on error
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* @return Return the operation status. When the return value is RT_EOK, the function is successfully executed.
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* When the return value is any other values, it means this operation failed.
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*/
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rt_err_t rt_thread_delete(rt_thread_t thread)
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{
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@ -502,11 +514,12 @@ RTM_EXPORT(rt_thread_delete);
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#endif /* RT_USING_HEAP */
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/**
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* This function will let current thread yield processor, and scheduler will
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* choose a highest thread to run. After yield processor, the current thread
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* is still in READY state.
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* @brief This function will let current thread yield processor, and scheduler will
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* choose a highest thread to run. After yield processor, the current thread
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* is still in READY state.
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*
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* @return RT_EOK
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* @return Return the operation status. When the return value is RT_EOK, the function is successfully executed.
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* When the return value is any other values, it means this operation failed.
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*/
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rt_err_t rt_thread_yield(void)
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{
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@ -525,11 +538,13 @@ rt_err_t rt_thread_yield(void)
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RTM_EXPORT(rt_thread_yield);
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/**
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* This function will let current thread sleep for some ticks.
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* @brief This function will let current thread sleep for some ticks. Change current thread state to suspend,
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* when the thread timer reaches the tick value, scheduler will awaken this thread.
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*
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* @param tick the sleep ticks
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* @param tick the sleep ticks.
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*
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* @return RT_EOK
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* @return Return the operation status. When the return value is RT_EOK, the function is successfully executed.
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* When the return value is any other values, it means this operation failed.
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*/
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rt_err_t rt_thread_sleep(rt_tick_t tick)
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{
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@ -564,11 +579,12 @@ rt_err_t rt_thread_sleep(rt_tick_t tick)
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}
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/**
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* This function will let current thread delay for some ticks.
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* @brief This function will let current thread delay for some ticks.
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*
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* @param tick the delay ticks
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* @param tick the delay ticks.
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*
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* @return RT_EOK
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* @return Return the operation status. When the return value is RT_EOK, the function is successfully executed.
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* When the return value is any other values, it means this operation failed.
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*/
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rt_err_t rt_thread_delay(rt_tick_t tick)
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{
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@ -577,12 +593,14 @@ rt_err_t rt_thread_delay(rt_tick_t tick)
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RTM_EXPORT(rt_thread_delay);
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/**
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* This function will let current thread delay until (*tick + inc_tick).
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* @brief This function will let current thread delay until (*tick + inc_tick).
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*
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* @param tick the tick of last wakeup.
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* @param inc_tick the increment tick
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* @param tick the tick of last wakeup.
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*
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* @return RT_EOK
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* @param inc_tick the increment tick.
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*
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* @return Return the operation status. When the return value is RT_EOK, the function is successfully executed.
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* When the return value is any other values, it means this operation failed.
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*/
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rt_err_t rt_thread_delay_until(rt_tick_t *tick, rt_tick_t inc_tick)
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{
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@ -637,11 +655,12 @@ rt_err_t rt_thread_delay_until(rt_tick_t *tick, rt_tick_t inc_tick)
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RTM_EXPORT(rt_thread_delay_until);
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/**
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* This function will let current thread delay for some milliseconds.
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* @brief This function will let current thread delay for some milliseconds.
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*
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* @param ms the delay ms time
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* @param ms the delay ms time.
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*
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* @return RT_EOK
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* @return Return the operation status. When the return value is RT_EOK, the function is successfully executed.
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* When the return value is any other values, it means this operation failed.
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*/
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rt_err_t rt_thread_mdelay(rt_int32_t ms)
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{
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@ -654,17 +673,24 @@ rt_err_t rt_thread_mdelay(rt_int32_t ms)
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RTM_EXPORT(rt_thread_mdelay);
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/**
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* This function will control thread behaviors according to control command.
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* @brief This function will control thread behaviors according to control command.
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*
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* @param thread the specified thread to be controlled
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* @param cmd the control command, which includes
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* RT_THREAD_CTRL_CHANGE_PRIORITY for changing priority level of thread;
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* RT_THREAD_CTRL_STARTUP for starting a thread;
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* RT_THREAD_CTRL_CLOSE for delete a thread;
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* RT_THREAD_CTRL_BIND_CPU for bind the thread to a CPU.
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* @param arg the argument of control command
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* @param thread the specified thread to be controlled.
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*
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* @return RT_EOK
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* @param cmd the control command, which includes.
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*
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* RT_THREAD_CTRL_CHANGE_PRIORITY for changing priority level of thread.
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*
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* RT_THREAD_CTRL_STARTUP for starting a thread.
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*
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* RT_THREAD_CTRL_CLOSE for delete a thread.
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*
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* RT_THREAD_CTRL_BIND_CPU for bind the thread to a CPU.
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*
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* @param arg the argument of control command.
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*
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* @return Return the operation status. When the return value is RT_EOK, the function is successfully executed.
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* When the return value is any other values, it means this operation failed.
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*/
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rt_err_t rt_thread_control(rt_thread_t thread, int cmd, void *arg)
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{
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@ -770,14 +796,15 @@ rt_err_t rt_thread_control(rt_thread_t thread, int cmd, void *arg)
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RTM_EXPORT(rt_thread_control);
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/**
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* This function will suspend the specified thread.
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* @brief This function will suspend the specified thread and change it to suspend state.
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*
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* @param thread the thread to be suspended
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* @note if suspend self thread, after this function call, the
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* rt_schedule() must be invoked.
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*
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* @return the operation status, RT_EOK on OK, -RT_ERROR on error
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* @param thread the thread to be suspended.
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*
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* @note if suspend self thread, after this function call, the
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* rt_schedule() must be invoked.
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* @return Return the operation status. When the return value is RT_EOK, the function is successfully executed.
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* When the return value is any other values, it means this operation failed.
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*/
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rt_err_t rt_thread_suspend(rt_thread_t thread)
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{
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@ -822,11 +849,12 @@ rt_err_t rt_thread_suspend(rt_thread_t thread)
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RTM_EXPORT(rt_thread_suspend);
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/**
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* This function will resume a thread and put it to system ready queue.
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* @brief This function will resume a thread and put it to system ready queue.
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*
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* @param thread the thread to be resumed
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* @param thread the thread to be resumed.
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*
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* @return the operation status, RT_EOK on OK, -RT_ERROR on error
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* @return Return the operation status. When the return value is RT_EOK, the function is successfully executed.
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* When the return value is any other values, it means this operation failed.
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*/
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rt_err_t rt_thread_resume(rt_thread_t thread)
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{
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@ -866,10 +894,10 @@ rt_err_t rt_thread_resume(rt_thread_t thread)
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RTM_EXPORT(rt_thread_resume);
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/**
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* This function is the timeout function for thread, normally which is invoked
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* when thread is timeout to wait some resource.
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* @brief This function is the timeout function for thread, normally which is invoked
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* when thread is timeout to wait some resource.
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*
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* @param parameter the parameter of thread timeout function
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* @param parameter the parameter of thread timeout function
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*/
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void rt_thread_timeout(void *parameter)
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{
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@ -904,18 +932,19 @@ void rt_thread_timeout(void *parameter)
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RTM_EXPORT(rt_thread_timeout);
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/**
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* This function will find the specified thread.
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* @brief This function will find the specified thread.
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*
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* @param name the name of thread finding
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* @note please don't invoke this function in interrupt status.
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*
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* @return the found thread
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* @param name the name of thread finding.
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*
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* @note please don't invoke this function in interrupt status.
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* @return the found thread.
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*/
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rt_thread_t rt_thread_find(char *name)
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{
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return (rt_thread_t)rt_object_find(name, RT_Object_Class_Thread);
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}
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RTM_EXPORT(rt_thread_find);
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/**@}*/
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