#include <rtthread.h>
#include <rthw.h>
#include <rtdbg.h>

scheduler_mp.c 的引用(Include)关系图:

宏定义
#define	DBG_TAG "kernel.scheduler"

#define	DBG_LVL DBG_INFO

#define	SCHEDULER_LOCK_FLAG(percpu)

#define	SCHEDULER_ENTER_CRITICAL(curthr)

#define	SCHEDULER_EXIT_CRITICAL(curthr)

#define	SCHEDULER_CONTEXT_LOCK(percpu)

#define	SCHEDULER_CONTEXT_UNLOCK(percpu)

#define	SCHEDULER_LOCK(level)

#define	SCHEDULER_UNLOCK(level)

#define	IS_CRITICAL_SWITCH_PEND(pcpu, curthr)

#define	SET_CRITICAL_SWITCH_FLAG(pcpu, curthr)

#define	CLR_CRITICAL_SWITCH_FLAG(pcpu, curthr)

函数
rt_inline void	_fast_spin_lock (struct rt_spinlock *lock)

rt_inline void	_fast_spin_unlock (struct rt_spinlock *lock)

rt_inline rt_base_t	_get_global_highest_ready_prio (void)

rt_inline rt_base_t	_get_local_highest_ready_prio (struct rt_cpu *pcpu)

void	rt_system_scheduler_init (void)

void	rt_system_scheduler_start (void)

变量
rt_list_t	rt_thread_priority_table [RT_THREAD_PRIORITY_MAX]

宏定义说明

◆ DBG_TAG

#define DBG_TAG "kernel.scheduler"

在文件 scheduler_mp.c 第 42 行定义.

◆ DBG_LVL

#define DBG_LVL DBG_INFO

在文件 scheduler_mp.c 第 43 行定义.

◆ SCHEDULER_LOCK_FLAG

#define SCHEDULER_LOCK_FLAG ( percpu )

值:

((percpu)->sched_lock_flag)

在文件 scheduler_mp.c 第 49 行定义.

◆ SCHEDULER_ENTER_CRITICAL

#define SCHEDULER_ENTER_CRITICAL ( curthr )

值:

    do                                                      \
    {                                                       \
        if (curthr) RT_SCHED_CTX(curthr).critical_lock_nest++; \
    } while (0)

在文件 scheduler_mp.c 第 51 行定义.

#define SCHEDULER_ENTER_CRITICAL(curthr)                    \
    do                                                      \
    {                                                       \
        if (curthr) RT_SCHED_CTX(curthr).critical_lock_nest++; \
    } while (0)

◆ SCHEDULER_EXIT_CRITICAL

#define SCHEDULER_EXIT_CRITICAL ( curthr )

值:

    do                                                      \
    {                                                       \
        if (curthr) RT_SCHED_CTX(curthr).critical_lock_nest--; \
    } while (0)

在文件 scheduler_mp.c 第 57 行定义.

#define SCHEDULER_EXIT_CRITICAL(curthr)                     \
    do                                                      \
    {                                                       \
        if (curthr) RT_SCHED_CTX(curthr).critical_lock_nest--; \
    } while (0)

◆ SCHEDULER_CONTEXT_LOCK

#define SCHEDULER_CONTEXT_LOCK ( percpu )

值:

    do                                               \
    {                                                \
        RT_ASSERT(SCHEDULER_LOCK_FLAG(percpu) == 0); \
        _fast_spin_lock(&_mp_scheduler_lock);        \
        SCHEDULER_LOCK_FLAG(percpu) = 1;             \
    } while (0)

在文件 scheduler_mp.c 第 63 行定义.

#define SCHEDULER_CONTEXT_LOCK(percpu)               \
    do                                               \
    {                                                \
        RT_ASSERT(SCHEDULER_LOCK_FLAG(percpu) == 0); \
        _fast_spin_lock(&_mp_scheduler_lock);        \
        SCHEDULER_LOCK_FLAG(percpu) = 1;             \
    } while (0)

◆ SCHEDULER_CONTEXT_UNLOCK

#define SCHEDULER_CONTEXT_UNLOCK ( percpu )

值:

    do                                               \
    {                                                \
        RT_ASSERT(SCHEDULER_LOCK_FLAG(percpu) == 1); \
        SCHEDULER_LOCK_FLAG(percpu) = 0;             \
        _fast_spin_unlock(&_mp_scheduler_lock);      \
    } while (0)

在文件 scheduler_mp.c 第 71 行定义.

#define SCHEDULER_CONTEXT_UNLOCK(percpu)             \
    do                                               \
    {                                                \
        RT_ASSERT(SCHEDULER_LOCK_FLAG(percpu) == 1); \
        SCHEDULER_LOCK_FLAG(percpu) = 0;             \
        _fast_spin_unlock(&_mp_scheduler_lock);      \
    } while (0)

◆ SCHEDULER_LOCK

#define SCHEDULER_LOCK ( level )

值:

    do                                     \
    {                                      \
        rt_thread_t _curthr;               \
        struct rt_cpu *_percpu;            \
        level = rt_hw_local_irq_disable(); \
        _percpu = rt_cpu_self();           \
        _curthr = _percpu->current_thread; \
        SCHEDULER_ENTER_CRITICAL(_curthr); \
        SCHEDULER_CONTEXT_LOCK(_percpu);   \
    } while (0)

在文件 scheduler_mp.c 第 79 行定义.

#define SCHEDULER_LOCK(level)              \
    do                                     \
    {                                      \
        rt_thread_t _curthr;               \
        struct rt_cpu *_percpu;            \
        level = rt_hw_local_irq_disable(); \
        _percpu = rt_cpu_self();           \
        _curthr = _percpu->current_thread; \
        SCHEDULER_ENTER_CRITICAL(_curthr); \
        SCHEDULER_CONTEXT_LOCK(_percpu);   \
    } while (0)

◆ SCHEDULER_UNLOCK

#define SCHEDULER_UNLOCK ( level )

值:

    do                                     \
    {                                      \
        rt_thread_t _curthr;               \
        struct rt_cpu *_percpu;            \
        _percpu = rt_cpu_self();           \
        _curthr = _percpu->current_thread; \
        SCHEDULER_CONTEXT_UNLOCK(_percpu); \
        SCHEDULER_EXIT_CRITICAL(_curthr);  \
        rt_hw_local_irq_enable(level);     \
    } while (0)

在文件 scheduler_mp.c 第 91 行定义.

#define SCHEDULER_UNLOCK(level)            \
    do                                     \
    {                                      \
        rt_thread_t _curthr;               \
        struct rt_cpu *_percpu;            \
        _percpu = rt_cpu_self();           \
        _curthr = _percpu->current_thread; \
        SCHEDULER_CONTEXT_UNLOCK(_percpu); \
        SCHEDULER_EXIT_CRITICAL(_curthr);  \
        rt_hw_local_irq_enable(level);     \
    } while (0)

◆ IS_CRITICAL_SWITCH_PEND

#define IS_CRITICAL_SWITCH_PEND	(		pcpu,
			curthr )

值:

((pcpu)->critical_switch_flag)

在文件 scheduler_mp.c 第 109 行定义.

◆ SET_CRITICAL_SWITCH_FLAG

#define SET_CRITICAL_SWITCH_FLAG	(		pcpu,
			curthr )

值:

((pcpu)->critical_switch_flag = 1)

在文件 scheduler_mp.c 第 110 行定义.

◆ CLR_CRITICAL_SWITCH_FLAG

#define CLR_CRITICAL_SWITCH_FLAG	(		pcpu,
			curthr )

值:

((pcpu)->critical_switch_flag = 0)

在文件 scheduler_mp.c 第 111 行定义.

函数说明

◆ _fast_spin_lock()

rt_inline void _fast_spin_lock ( struct rt_spinlock * lock )

Used only on scheduler for optimization of control flows, where the critical region is already guaranteed.

在文件 scheduler_mp.c 第 125 行定义.

{
    rt_hw_spin_lock(&lock->lock);
 
    RT_SPIN_LOCK_DEBUG(lock);
}

引用了 rt_spinlock::lock, rt_hw_spin_lock , 以及 RT_SPIN_LOCK_DEBUG.

这是这个函数的调用关系图:

◆ _fast_spin_unlock()

rt_inline void _fast_spin_unlock ( struct rt_spinlock * lock )

在文件 scheduler_mp.c 第 132 行定义.

{
    rt_base_t critical_level;
    RT_SPIN_UNLOCK_DEBUG(lock, critical_level);
 
    /* for the scenario of sched, we don't check critical level */
    RT_UNUSED(critical_level);
 
    rt_hw_spin_unlock(&lock->lock);
}

引用了 rt_spinlock::lock, rt_hw_spin_unlock, RT_SPIN_UNLOCK_DEBUG , 以及 RT_UNUSED.

这是这个函数的调用关系图:

◆ _get_global_highest_ready_prio()

rt_inline rt_base_t _get_global_highest_ready_prio ( void )

在文件 scheduler_mp.c 第 216 行定义.

{
    return __rt_ffs(rt_thread_ready_priority_group) - 1;
}

引用了 __rt_ffs().

函数调用图:

◆ _get_local_highest_ready_prio()

rt_inline rt_base_t _get_local_highest_ready_prio ( struct rt_cpu * pcpu )

在文件 scheduler_mp.c 第 221 行定义.

{
    return __rt_ffs(pcpu->priority_group) - 1;
}

引用了 __rt_ffs().

函数调用图:

变量说明

◆ rt_thread_priority_table

rt_list_t rt_thread_priority_table[RT_THREAD_PRIORITY_MAX]

在文件 scheduler_mp.c 第 46 行定义.