StatusType ChainTask(TaskType TaskID)
#endif /* KOS_MEMORY_MAPPING */
{
Os_SaveServiceContext(OSServiceId_ChainTask, TaskID, NULL, NULL);
ASSERT_VALID_TASKID(TaskID);
ASSERT_VALID_CALLEVEL(OS_CL_TASK);
ASSERT_INTERRUPTS_ENABLED_AT_TASK_LEVEL();
ASSERT_CURR_TASK_OCCUPIES_NO_RESOURCES();
if (TaskID != Os_CurrentTID) {
WARN_IF_TO_MANY_ACTIVATIONS(TaskID);
}
OsPort_DisableAllOsInterrupts();
OsTask_UnlockInternalResource();
OsTask_DecrActivations(Os_CurrentTID);
OsTask_Suspend(Os_CurrentTID);
OsTask_IncrActivations(TaskID);
OsTask_ClearAllEvents(TaskID);
OsTask_Init(TaskID, ((TaskID == Os_CurrentTID) ? TRUE : FALSE));
OsTask_Ready(TaskID);
ASSERT(OS_TCB[Os_CurrentTID].State == SUSPENDED);
OsPort_EnableAllOsInterrupts();
OsExec_StartHighestReadyTask();
Os_ClearServiceContext();
return E_OK;
}
StatusType ChainTask(TaskType TaskID)
#endif /* KOS_MEMORY_MAPPING */
{
/*
** Terminates running Task and activates another, enforces Rescheduling.
**
** Standard-Status:
** – No return to call level.
** – E_OS_LIMIT – too many activations of <TaskID>.
** Extended-Status:
** – E_OS_ID – the task identifier is invalid.
** – E_OS_RESOURCE – the calling task still occupies resources.
** – E_OS_CALLEVEL – a call at the interrupt level.
*/
SAVE_SERVICE_CONTEXT(OSServiceId_ChainTask, TaskID, NULL, NULL);
ASSERT_VALID_TASKID(TaskID);
ASSERT_VALID_CALLEVEL(OS_CL_TASK);
ASSERT_INTERRUPTS_ENABLED_AT_TASK_LEVEL();
ASSERT_CURR_TASK_OCCUPIES_NO_RESOURCES();
if (TaskID != OsCurrentTID) {
WARN_IF_TO_MANY_ACTIVATIONS(TaskID);
}
DISABLE_ALL_OS_INTERRUPTS();
OS_UNLOCK_INTERNAL_RESOURCE();
OS_TASK_DECR_ACTIVATIONS(OsCurrentTID);
OsTask_Suspend(OsCurrentTID);
OS_TASK_INCR_ACTIVATIONS(TaskID);
OS_TASK_CLEAR_ALL_EVENTS(TaskID);
OsTask_Init(TaskID, ((TaskID == OsCurrentTID) ? TRUE : FALSE));
OsTask_Ready(TaskID);
ASSERT(OS_TCB[OsCurrentTID].State == SUSPENDED);
ENABLE_ALL_OS_INTERRUPTS();
OsExec_StartHighestReadyTask();
CLEAR_SERVICE_CONTEXT();
return E_OK;
}
StatusType TerminateTask(void)
#endif /* KOS_MEMORY_MAPPING */
{
/*
** Standard-Status: no return to Calllevel.
** Extended-Status:
** – E_OS_RESOURCE – the task still occupies resources.
** – E_OS_CALLEVEL – a call at the interrupt level.
**
*/
SAVE_SERVICE_CONTEXT(OSServiceId_TerminateTask, NULL, NULL, NULL);
ASSERT_VALID_CALLEVEL(OS_CL_TASK);
ASSERT_INTERRUPTS_ENABLED_AT_TASK_LEVEL();
ASSERT_CURR_TASK_OCCUPIES_NO_RESOURCES();
DISABLE_ALL_OS_INTERRUPTS();
OS_TASK_DECR_ACTIVATIONS(OsCurrentTID);
OsTask_Suspend(OsCurrentTID);
#if defined(OS_BCC2) || defined(OS_ECC2)
if (OsCurrentTCB->Activations > 0) { /* ??? */
OS_TASK_CLEAR_ALL_EVENTS(OsCurrentTID);
OsTask_Init(OsCurrentTID, TRUE);
OsTask_Ready(OsCurrentTID);
}
#endif
OS_UNLOCK_INTERNAL_RESOURCE();
ENABLE_ALL_OS_INTERRUPTS();
OsExec_StartHighestReadyTask();
CLEAR_SERVICE_CONTEXT();
return E_OK; /* never reached */
}
StatusType TerminateTask(void)
#endif /* KOS_MEMORY_MAPPING */
{
/*
** Standard-Status: no return to Calllevel.
** Extended-Status:
** – E_OS_RESOURCE – the task still occupies resources.
** – E_OS_CALLEVEL – a call at the interrupt level.
**
*/
Os_SaveServiceContext(OSServiceId_TerminateTask, NULL, NULL, NULL);
ASSERT_VALID_CALLEVEL(OS_CL_TASK);
ASSERT_INTERRUPTS_ENABLED_AT_TASK_LEVEL();
ASSERT_CURR_TASK_OCCUPIES_NO_RESOURCES();
OsPort_DisableAllOsInterrupts();
OsTask_DecrActivations(Os_CurrentTID);
OsTask_Suspend(Os_CurrentTID);
#if defined(OS_BCC2) || defined(OS_ECC2)
if (Os_CurrentTCB->Activations > 0) { /* ??? */
OsTask_ClearAllEvents(Os_CurrentTID);
OsTask_Init(Os_CurrentTID, TRUE);
OsTask_Ready(Os_CurrentTID);
}
#endif
OsTask_UnlockInternalResource();
OsPort_EnableAllOsInterrupts();
OsExec_StartHighestReadyTask();
Os_ClearServiceContext();
return E_OK; /* never reached */
}
