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kernel: add RT_DEBUG_IN_THREAD_CONTEXT 

In thread context means: 1) the scheduler has been started; 2) not in
interrupt context. It is more stronger than RT_DEBUG_NOT_IN_INTERRUPT.
With this commit, you will catch the error on situations like taking
mutex before scheduling instead of crashing on NULL pointer reference.
This commit is contained in:
Grissiom 2013-10-11 22:46:05 +08:00
parent 786a5541a3
commit 6f71308ef5
2 changed files with 27 additions and 6 deletions
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21
include/rtdebug.h
View File

@ -103,8 +103,29 @@ do \
rt_hw_interrupt_enable(level); \ rt_hw_interrupt_enable(level); \
} \ } \
while (0) while (0)
/* "In thread context" means:
* 1) the scheduler has been started
* 2) not in interrupt context.
*/
#define RT_DEBUG_IN_THREAD_CONTEXT \
do \
{ \
rt_base_t level; \
level = rt_hw_interrupt_disable(); \
if (rt_thread_self() == RT_NULL) \
{ \
rt_kprintf("Function[%s] shall not be used before scheduler start\n", \
__FUNCTION__); \
RT_ASSERT(0) \
} \
RT_DEBUG_NOT_IN_INTERRUPT; \
rt_hw_interrupt_enable(level); \
} \
while (0)
#else #else
#define RT_DEBUG_NOT_IN_INTERRUPT #define RT_DEBUG_NOT_IN_INTERRUPT
#define RT_DEBUG_IN_THREAD_CONTEXT
#endif #endif
#else /* RT_DEBUG */ #else /* RT_DEBUG */

12
src/ipc.c
View File

@ -362,7 +362,7 @@ rt_err_t rt_sem_take(rt_sem_t sem, rt_int32_t time)
else else
{ {
/* current context checking */ /* current context checking */
RT_DEBUG_NOT_IN_INTERRUPT; RT_DEBUG_IN_THREAD_CONTEXT;
/* semaphore is unavailable, push to suspend list */ /* semaphore is unavailable, push to suspend list */
/* get current thread */ /* get current thread */
@ -645,7 +645,7 @@ rt_err_t rt_mutex_take(rt_mutex_t mutex, rt_int32_t time)
struct rt_thread *thread; struct rt_thread *thread;
/* this function must not be used in interrupt even if time = 0 */ /* this function must not be used in interrupt even if time = 0 */
RT_DEBUG_NOT_IN_INTERRUPT; RT_DEBUG_IN_THREAD_CONTEXT;
RT_ASSERT(mutex != RT_NULL); RT_ASSERT(mutex != RT_NULL);
@ -1097,7 +1097,7 @@ rt_err_t rt_event_recv(rt_event_t event,
register rt_ubase_t level; register rt_ubase_t level;
register rt_base_t status; register rt_base_t status;
RT_DEBUG_NOT_IN_INTERRUPT; RT_DEBUG_IN_THREAD_CONTEXT;
/* parameter check */ /* parameter check */
RT_ASSERT(event != RT_NULL); RT_ASSERT(event != RT_NULL);
@ -1442,7 +1442,7 @@ rt_err_t rt_mb_send_wait(rt_mailbox_t mb,
return -RT_EFULL; return -RT_EFULL;
} }
RT_DEBUG_NOT_IN_INTERRUPT; RT_DEBUG_IN_THREAD_CONTEXT;
/* suspend current thread */ /* suspend current thread */
rt_ipc_list_suspend(&(mb->suspend_sender_thread), rt_ipc_list_suspend(&(mb->suspend_sender_thread),
thread, thread,
@ -1589,7 +1589,7 @@ rt_err_t rt_mb_recv(rt_mailbox_t mb, rt_uint32_t *value, rt_int32_t timeout)
return -RT_ETIMEOUT; return -RT_ETIMEOUT;
} }
RT_DEBUG_NOT_IN_INTERRUPT; RT_DEBUG_IN_THREAD_CONTEXT;
/* suspend current thread */ /* suspend current thread */
rt_ipc_list_suspend(&(mb->parent.suspend_thread), rt_ipc_list_suspend(&(mb->parent.suspend_thread),
thread, thread,
@ -2123,7 +2123,7 @@ rt_err_t rt_mq_recv(rt_mq_t mq,
/* message queue is empty */ /* message queue is empty */
while (mq->entry == 0) while (mq->entry == 0)
{ {
RT_DEBUG_NOT_IN_INTERRUPT; RT_DEBUG_IN_THREAD_CONTEXT;
/* reset error number in thread */ /* reset error number in thread */
thread->error = RT_EOK; thread->error = RT_EOK;