void ex_tcb::registerResizeSubtasks()
{
// Register two resize tasks with the scheduler, one for the
// down queue and one for the up queue. Do this only if there
// is potential for resizing (if the initial size is less
// than the max size for the queue). Set the resize limit.
ExScheduler *sched = globals_->getScheduler();
Lng32 resizeLimit = (Lng32) getTdb()->getQueueResizeLimit();
ex_queue *whichQueue;
whichQueue = getParentQueue().up;
if (whichQueue->getSize() < getTdb()->getMaxQueueSizeUp())
{
whichQueue->setResizeLimit(resizeLimit);
sched->registerResizeSubtask(ex_tcb::sResize,this,whichQueue,"RS");
}
whichQueue = getParentQueue().down;
if (whichQueue->getSize() < getTdb()->getMaxQueueSizeDown())
{
whichQueue->setResizeLimit(resizeLimit);
sched->registerResizeSubtask(ex_tcb::sResize,this,whichQueue,"RS");
}
}
void ExSequenceTcb::registerSubtasks()
{
ExScheduler *sched = getGlobals()->getScheduler();
ex_tcb :: registerSubtasks();
// Regsiter the I/O event, if overflow is possible
if ( isUnboundedFollowing() ) {
ioEventHandler_ = sched->registerNonQueueSubtask(sWork,this);
// work around: The handler was just created, while clusterDb was created
// earlier (in the TCB ctor), so update clusterDb now with the handler
ex_assert( clusterDb_ , "Unlimited following and no clusterDb_") ;
clusterDb_->ioEventHandler_ = ioEventHandler_ ;
}
};
void ex_tcb::registerSubtasks()
{
// the default implementation registers the default static
// work procedure for all events that can occur for this task
ExScheduler *sched = globals_->getScheduler();
ex_queue_pair pQueue = getParentQueue();
// register events for parent queue
ex_assert(pQueue.down && pQueue.up,"Parent down queue must exist");
sched->registerInsertSubtask(ex_tcb::sWork, this, pQueue.down,"WK");
sched->registerCancelSubtask(ex_tcb::sCancel, this, pQueue.down,"CN");
sched->registerUnblockSubtask(ex_tcb::sWork, this, pQueue.up,"WK");
// BertBert VV
// subtask to handle GET_NEXT_N events downstream.
sched->registerNextSubtask(ex_tcb::sWork, this, pQueue.down,"GN");
// BertBert ^^
// register events for child queues
Int32 nc = numChildren();
for (Int32 i = 0; i < nc; i++)
{
const ex_tcb * childTcb = getChild(i);
if (childTcb)
{
ex_queue_pair cQueue = childTcb->getParentQueue();
sched->registerUnblockSubtask(ex_tcb::sWork,this, cQueue.down);
sched->registerInsertSubtask(ex_tcb::sWork, this, cQueue.up);
}
}
if (getPool())
getPool()->setStaticMode(FALSE);
}
void ExProbeCacheTcb::registerSubtasks()
{
ExScheduler *sched = getGlobals()->getScheduler();
sched->registerInsertSubtask(sWorkDown, this, qparent_.down,"PD");
sched->registerUnblockSubtask(sWorkDown, this, qchild_.down, "PD");
sched->registerInsertSubtask(sWorkUp, this, qchild_.up, "PU");
sched->registerUnblockSubtask(sWorkUp, this, qparent_.up, "PU");
sched->registerCancelSubtask(sCancel, this, qparent_.down,"CN");
// We need to schedule workUp from workDown if a call to workDown
// has changed any request to either CACHE_HIT or CANCELED_NOT_STARTED
// and if it has not changed any request to CACHE_MISS.
workUpTask_ = sched->registerNonQueueSubtask(sWorkUp, this, "PU");
}
////////////////////////////////////////////////////////////////////////
// Register subtasks
//
void ExFirstNTcb::registerSubtasks()
{
ExScheduler *sched = getGlobals()->getScheduler();
ex_queue_pair pQueue = getParentQueue();
// register events for parent queue
ex_assert(pQueue.down && pQueue.up,"Parent down queue must exist");
sched->registerInsertSubtask(ex_tcb::sWork, this, pQueue.down);
sched->registerCancelSubtask(sCancel, this, pQueue.down);
sched->registerUnblockSubtask(ex_tcb::sWork,this, pQueue.up);
// register events for child queues
const ex_queue_pair cQueue = getChild(0)->getParentQueue();
sched->registerUnblockSubtask(ex_tcb::sWork,this, cQueue.down);
sched->registerInsertSubtask(ex_tcb::sWork, this, cQueue.up);
}
void ExVPJoinTcb::registerSubtasks()
{
ExScheduler *sched = getGlobals()->getScheduler();
// parent and child down queues are handled by workDown()
sched->registerInsertSubtask(sWorkDown, this, qParent_.down, "Work Down");
sched->registerCancelSubtask(sWorkCancel, this, qParent_.down, "Work Cancel");
Int32 i;
for (i=0; i<numChildren_; i++)
{
sched->registerUnblockSubtask(sWorkDown, this, qChild_[i].down);
}
// parent and child up queues are handled by workUp()
sched->registerUnblockSubtask(sWorkUp, this, qParent_.up, "Work Up");
for (i=0; i<numChildren_; i++)
{
sched->registerInsertSubtask(sWorkUp, this, qChild_[i].up, "Work Up");
}
// make an event through which we can tell the scheduler to call
// workUp().
exceptionEvent_ = sched->registerNonQueueSubtask(sWorkUp, this);
}
// ExTransposeTcb::registerSubtasks() -------------------------------------
// Register all the transpose subtasks with the scheduler.
//
void ExTransposeTcb::registerSubtasks()
{
ExScheduler *sched = getGlobals()->getScheduler();
// down queues are handled by workDown()
//
// Schedule this routine if a new entry is inserted into the
// parents down queue and we are waiting on an event.
// (had returned WORK_OK).
//
sched->registerInsertSubtask(sWorkDown, this, qParent_.down, "DN");
// Schedule this routine if the child's down queue changes from being
// full to being not full and we are waiting on an event.
// (had returned WORK_OK).
//
sched->registerUnblockSubtask(sWorkDown, this, childQueue_.down, "DN");
// Schedule this routine if a cancel request occurs on the
// parents down queue.
//
sched->registerCancelSubtask(sCancel, this, qParent_.down, "CN");
// up queues are handled by workUp()
//
// Schedule this routine if the parent's up queue changes from being
// full to being not full and we are waiting on an event.
// (had returned WORK_OK).
//
sched->registerUnblockSubtask(sWorkUp, this, qParent_.up,"UP");
// Schedule this routine if a new entry is inserted into the
// child's up queue and we are waiting on an event.
// (had returned WORK_OK).
//
sched->registerInsertSubtask(sWorkUp, this, childQueue_.up);
}