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...
...
...
#define TX_SOURCE_CODE
#include "tx_api.h"
#include "tx_trace.h"
#include "tx_thread.h"
#include "tx_mutex.h"
...
...
UINT _tx_mutex_prioritize(TX_MUTEX *mutex_ptr)
{
TX_INTERRUPT_SAVE_AREA
TX_THREAD *thread_ptr;
TX_THREAD *priority_thread_ptr;
TX_THREAD *head_ptr;
UINT suspended_count;
TX_THREAD *next_thread;
TX_THREAD *previous_thread;
UINT list_changed;
#ifdef TX_MISRA_ENABLE
UINT status;
#endif
TX_DISABLE
TX_TRACE_IN_LINE_INSERT(TX_TRACE_MUTEX_PRIORITIZE, mutex_ptr, mutex_ptr -> tx_mutex_suspended_count, TX_POINTER_TO_ULONG_CONVERT(&suspended_count), 0, TX_TRACE_MUTEX_EVENTS)
TX_EL_MUTEX_PRIORITIZE_INSERT
suspended_count = mutex_ptr -> tx_mutex_suspended_count;
if (suspended_count < ((UINT) 2))
{
TX_RESTORE
}if (suspended_count < ((UINT) 2)) { ... }
else if (suspended_count == ((UINT) 2))
{
head_ptr = mutex_ptr -> tx_mutex_suspension_list;
next_thread = head_ptr -> tx_thread_suspended_next;
if ((next_thread -> tx_thread_priority) < (head_ptr -> tx_thread_priority))
{
mutex_ptr -> tx_mutex_suspension_list = next_thread;
}if ((next_thread -> tx_thread_priority) < (head_ptr -> tx_thread_priority)) { ... }
TX_RESTORE
}else if (suspended_count == ((UINT) 2)) { ... }
else
{
head_ptr = mutex_ptr -> tx_mutex_suspension_list;
priority_thread_ptr = head_ptr;
thread_ptr = priority_thread_ptr -> tx_thread_suspended_next;
_tx_thread_preempt_disable++;
list_changed = TX_FALSE;
do
{
if (thread_ptr -> tx_thread_priority < priority_thread_ptr -> tx_thread_priority)
{
priority_thread_ptr = thread_ptr;
}if (thread_ptr -> tx_thread_priority < priority_thread_ptr -> tx_thread_priority) { ... }
TX_RESTORE
TX_DISABLE
/* ... */
if (head_ptr != mutex_ptr -> tx_mutex_suspension_list)
{
list_changed = TX_TRUE;
}if (head_ptr != mutex_ptr -> tx_mutex_suspension_list) { ... }
else
{
if (suspended_count != mutex_ptr -> tx_mutex_suspended_count)
{
list_changed = TX_TRUE;
}if (suspended_count != mutex_ptr -> tx_mutex_suspended_count) { ... }
}else { ... }
if (list_changed == TX_FALSE)
{
thread_ptr = thread_ptr -> tx_thread_suspended_next;
}if (list_changed == TX_FALSE) { ... }
else
{
head_ptr = mutex_ptr -> tx_mutex_suspension_list;
suspended_count = mutex_ptr -> tx_mutex_suspended_count;
priority_thread_ptr = head_ptr;
thread_ptr = priority_thread_ptr -> tx_thread_suspended_next;
list_changed = TX_FALSE;
}else { ... }
...} while (thread_ptr != head_ptr);
_tx_thread_preempt_disable--;
/* ... */
if (priority_thread_ptr != head_ptr)
{
/* ... */
/* ... */
next_thread = priority_thread_ptr -> tx_thread_suspended_next;
previous_thread = priority_thread_ptr -> tx_thread_suspended_previous;
next_thread -> tx_thread_suspended_previous = previous_thread;
previous_thread -> tx_thread_suspended_next = next_thread;
previous_thread = head_ptr -> tx_thread_suspended_previous;
priority_thread_ptr -> tx_thread_suspended_next = head_ptr;
priority_thread_ptr -> tx_thread_suspended_previous = previous_thread;
previous_thread -> tx_thread_suspended_next = priority_thread_ptr;
head_ptr -> tx_thread_suspended_previous = priority_thread_ptr;
mutex_ptr -> tx_mutex_suspension_list = priority_thread_ptr;
}if (priority_thread_ptr != head_ptr) { ... }
TX_RESTORE
_tx_thread_system_preempt_check();
}else { ... }
#ifdef TX_MISRA_ENABLE
status = TX_SUCCESS;
status = TX_MUTEX_PRIORITIZE_MISRA_EXTENSION(status);
return(status);/* ... */
#else
return(TX_SUCCESS);/* ... */
#endif
}{ ... }