static void vos_linux_timer_callback ( v_U32_t data ) 
{
   vos_timer_t *timer = ( vos_timer_t *)data; 
   vos_msg_t msg;
   VOS_STATUS vStatus;
   unsigned long flags;
   
   vos_timer_callback_t callback=NULL;
   v_PVOID_t userData=NULL;
   int threadId;
   VOS_TIMER_TYPE type=VOS_TIMER_TYPE_SW;
   
   VOS_ASSERT(timer);

   if (timer == NULL)
   {
     VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, "%s Null pointer passed in!",__func__);
     return;
   }

   threadId = timer->platformInfo.threadID;
   spin_lock_irqsave( &timer->platformInfo.spinlock,flags );
   
   switch ( timer->state )
   {
   case VOS_TIMER_STATE_STARTING:
      // we are in this state because someone just started the timer, MM timer
      // got started and expired, but the time content have not bee updated
      // this is a rare race condition!
      timer->state = VOS_TIMER_STATE_STOPPED;
      vStatus = VOS_STATUS_E_ALREADY;
      break;
   case VOS_TIMER_STATE_STOPPED:
      vStatus = VOS_STATUS_E_ALREADY;
      break;
   case VOS_TIMER_STATE_UNUSED:
      vStatus = VOS_STATUS_E_EXISTS;
      break;
   case VOS_TIMER_STATE_RUNNING:
      // need to go to stop state here because the call-back function may restart 
      // timer (to emulate periodic timer)
      timer->state = VOS_TIMER_STATE_STOPPED;
      // copy the relevant timer information to local variables;
      // once we exist from this critical section, the timer content may be modified
      // by other tasks
      callback = timer->callback;
      userData = timer->userData;
      threadId = timer->platformInfo.threadID;
      type = timer->type;
      vStatus = VOS_STATUS_SUCCESS;
      break;
   default:
      VOS_ASSERT(0);
      vStatus = VOS_STATUS_E_FAULT;
      break;
   }
   
   spin_unlock_irqrestore( &timer->platformInfo.spinlock,flags );
   
   if ( VOS_STATUS_SUCCESS != vStatus )
   {
      VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, 
                "TIMER callback called in a wrong state=%d", timer->state);
      return;
   }

   tryAllowingSleep( type );

   if (callback == NULL)
   {
       VOS_ASSERT(0);
       VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR,
                 "%s: No TIMER callback, Could not enqueue timer to any queue",
                 __func__);
       return;
   }

   // If timer has expired then call vos_client specific callback 
   if ( vos_sched_is_tx_thread( threadId ) )
   {
      VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_INFO, 
          "TIMER callback: running on TX thread");
         
      //Serialize to the Tx thread
      sysBuildMessageHeader( SYS_MSG_ID_TX_TIMER, &msg );
      msg.bodyptr  = callback;
      msg.bodyval  = (v_U32_t)userData; 
       
      if(vos_tx_mq_serialize( VOS_MQ_ID_SYS, &msg ) == VOS_STATUS_SUCCESS)
         return;
   }
   else if ( vos_sched_is_rx_thread( threadId ) )
   {
      VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_INFO, 
          "TIMER callback: running on RX thread");
         
      //Serialize to the Rx thread
      sysBuildMessageHeader( SYS_MSG_ID_RX_TIMER, &msg );
      msg.bodyptr  = callback;
      msg.bodyval  = (v_U32_t)userData; 
       
      if(vos_rx_mq_serialize( VOS_MQ_ID_SYS, &msg ) == VOS_STATUS_SUCCESS)
         return;
   }
   else 
   {
      VOS_TRACE( VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_INFO,
          "TIMER callback: running on MC thread");
                    
      // Serialize to the MC thread
      sysBuildMessageHeader( SYS_MSG_ID_MC_TIMER, &msg );
      msg.bodyptr  = callback;
      msg.bodyval  = (v_U32_t)userData; 
       
      if(vos_mq_post_message( VOS_MQ_ID_SYS, &msg ) == VOS_STATUS_SUCCESS)
        return;
   }     

   VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, 
             "%s: Could not enqueue timer to any queue", __func__);
   VOS_ASSERT(0);
}
예제 #2
0
static void vos_linux_timer_callback ( v_U32_t data ) 
{
   vos_timer_t *timer = ( vos_timer_t *)data; 
   vos_msg_t msg;
   VOS_STATUS vStatus;
   unsigned long flags;
   
   vos_timer_callback_t callback=NULL;
   v_PVOID_t userData=NULL;
   int threadId;
   VOS_TIMER_TYPE type=VOS_TIMER_TYPE_SW;
   
   VOS_ASSERT(timer);

   if (timer == NULL)
   {
     VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, "%s Null pointer passed in!",__func__);
     return;
   }

   threadId = timer->platformInfo.threadID;
   spin_lock_irqsave( &timer->platformInfo.spinlock,flags );
   
   switch ( timer->state )
   {
   case VOS_TIMER_STATE_STARTING:
      //                                                                      
      //                                                                   
      //                               
      timer->state = VOS_TIMER_STATE_STOPPED;
      vStatus = VOS_STATUS_E_ALREADY;
      break;
   case VOS_TIMER_STATE_STOPPED:
      vStatus = VOS_STATUS_E_ALREADY;
      break;
   case VOS_TIMER_STATE_UNUSED:
      vStatus = VOS_STATUS_E_EXISTS;
      break;
   case VOS_TIMER_STATE_RUNNING:
      //                                                                          
      //                                  
      timer->state = VOS_TIMER_STATE_STOPPED;
      //                                                        
      //                                                                            
      //               
      callback = timer->callback;
      userData = timer->userData;
      threadId = timer->platformInfo.threadID;
      type = timer->type;
      vStatus = VOS_STATUS_SUCCESS;
      break;
   default:
      VOS_ASSERT(0);
      vStatus = VOS_STATUS_E_FAULT;
      break;
   }
   
   spin_unlock_irqrestore( &timer->platformInfo.spinlock,flags );
   
   if ( VOS_STATUS_SUCCESS != vStatus )
   {
      VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, 
                "TIMER callback called in a wrong state=%d", timer->state);
      return;
   }

   tryAllowingSleep( type );

   if (callback == NULL)
   {
       VOS_ASSERT(0);
       VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR,
                 "%s: No TIMER callback, Could not enqueue timer to any queue",
                 __func__);
       return;
   }

   //                                                             
   if ( vos_sched_is_tx_thread( threadId ) )
   {
      VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_INFO, 
          "TIMER callback: running on TX thread");
         
      //                          
      sysBuildMessageHeader( SYS_MSG_ID_TX_TIMER, &msg );
      msg.bodyptr  = callback;
      msg.bodyval  = (v_U32_t)userData; 
       
      if(vos_tx_mq_serialize( VOS_MQ_ID_SYS, &msg ) == VOS_STATUS_SUCCESS)
         return;
   }
   else if ( vos_sched_is_rx_thread( threadId ) )
   {
      VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_INFO, 
          "TIMER callback: running on RX thread");
         
      //                          
      sysBuildMessageHeader( SYS_MSG_ID_RX_TIMER, &msg );
      msg.bodyptr  = callback;
      msg.bodyval  = (v_U32_t)userData; 
       
      if(vos_rx_mq_serialize( VOS_MQ_ID_SYS, &msg ) == VOS_STATUS_SUCCESS)
         return;
   }
   else 
   {
      VOS_TRACE( VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_INFO,
          "TIMER callback: running on MC thread");
                    
      //                           
      sysBuildMessageHeader( SYS_MSG_ID_MC_TIMER, &msg );
      msg.bodyptr  = callback;
      msg.bodyval  = (v_U32_t)userData; 
       
      if(vos_mq_post_message( VOS_MQ_ID_SYS, &msg ) == VOS_STATUS_SUCCESS)
        return;
   }     

   VOS_TRACE(VOS_MODULE_ID_VOSS, VOS_TRACE_LEVEL_ERROR, 
             "%s: Could not enqueue timer to any queue", __func__);
   VOS_ASSERT(0);
}