/*!
* \brief Calculates the time the job has been waiting at the specified
* priority.
*
* Adds to the totalTime and totalJobs kept in the thread pool statistics
* structure.
*
* \internal
*/
static void CalcWaitTime(
/*! . */
ThreadPool *tp,
/*! . */
ThreadPriority p,
/*! . */
ThreadPoolJob *job)
{
struct timeval now;
long diff;
assert(tp != NULL);
assert(job != NULL);
gettimeofday(&now, NULL);
diff = DiffMillis(&now, &job->requestTime);
switch (p) {
case LOW_PRIORITY:
StatsAccountLQ(tp, diff);
break;
case MED_PRIORITY:
StatsAccountMQ(tp, diff);
break;
case HIGH_PRIORITY:
StatsAccountHQ(tp, diff);
break;
default:
assert(0);
}
}
/****************************************************************************
* Function: BumpPriority
*
* Description:
* Determines whether any jobs
* need to be bumped to a higher priority Q and bumps them.
*
* tp->mutex must be locked.
* Internal Only.
* Parameters:
* ThreadPool *tp
*****************************************************************************/
static void BumpPriority( ThreadPool *tp )
{
int done = 0;
struct timeval now;
unsigned long diffTime = 0;
ThreadPoolJob *tempJob = NULL;
assert( tp != NULL );
gettimeofday(&now, NULL);
while( !done ) {
if( tp->medJobQ.size ) {
tempJob = ( ThreadPoolJob *) tp->medJobQ.head.next->item;
diffTime = DiffMillis( &now, &tempJob->requestTime );
if( diffTime >= ( tp->attr.starvationTime ) ) {
// If job has waited longer than the starvation time
// bump priority (add to higher priority Q)
StatsAccountMQ( tp, diffTime );
ListDelNode( &tp->medJobQ, tp->medJobQ.head.next, 0 );
ListAddTail( &tp->highJobQ, tempJob );
continue;
}
}
if( tp->lowJobQ.size ) {
tempJob = ( ThreadPoolJob *) tp->lowJobQ.head.next->item;
diffTime = DiffMillis( &now, &tempJob->requestTime );
if( diffTime >= ( tp->attr.maxIdleTime ) ) {
// If job has waited longer than the starvation time
// bump priority (add to higher priority Q)
StatsAccountLQ( tp, diffTime );
ListDelNode( &tp->lowJobQ, tp->lowJobQ.head.next, 0 );
ListAddTail( &tp->medJobQ, tempJob );
continue;
}
}
done = 1;
}
}