void JobManager::DoSchedule(InternalJob::Pointer job,
Poco::Timestamp::TimeDiff delay)
{
Poco::ScopedLock<Poco::Mutex> managerLock(m_mutex);
//job may have been canceled already
int state = job->InternalGetState();
if (state != InternalJob::ABOUT_TO_SCHEDULE && state != Job::SLEEPING)
return;
//if it's a decoration job with no rule, don't run it right now if the system is busy
if (job->GetPriority() == Job::DECORATE && job->GetRule() == 0)
{
Poco::Timestamp::TimeDiff tmp_minDelay = m_running.size() * 100;
delay = std::max(delay, tmp_minDelay);
}
if (delay > 0)
{
job->SetStartTime(Poco::Timestamp() + delay * 100);
InternalJob::Pointer sptr_job(job);
ChangeState(sptr_job, Job::SLEEPING);
}
else
{
job->SetStartTime(Poco::Timestamp() + DelayFor(job->GetPriority()) * 100);
job->SetWaitQueueStamp(m_waitQueueCounter++);
InternalJob::Pointer sptr_job(job);
ChangeState(sptr_job, Job::WAITING);
}
}
bool JobManager::IsBlocking(InternalJob::Pointer sptr_runningJob)
{
{
Poco::ScopedLock<Poco::Mutex> lockMe (m_mutex);
// if this job isn't running, it can't be blocking anyone
if (sptr_runningJob->GetState() != Job::RUNNING)
return false;
// if any job is queued behind this one, it is blocked by it
InternalJob::Pointer ptr_previous = sptr_runningJob->Previous();
while (ptr_previous != 0)
{
// ignore jobs of lower priority (higher priority value means lower priority)
if (ptr_previous->GetPriority() < sptr_runningJob->GetPriority())
{
if (!ptr_previous->IsSystem())
return true;
// TODO Implicit Jobs
// implicit jobs should interrupt unless they act on behalf of system jobs
// if (previous instanceof ThreadJob && ((ThreadJob) previous).shouldInterrupt())
// return true;
}
ptr_previous = ptr_previous->previous;
}
// none found
return false;
}
}
void JobManager::SetPriority(InternalJob::Pointer job, int newPriority)
{
{
Poco::ScopedLock<Poco::Mutex> lockMe (m_mutex);
InternalJob::Pointer sptr_job(job);
int oldPriority = job->GetPriority();
if (oldPriority == newPriority)
return;
job->InternalSetPriority(newPriority);
//if the job is waiting to run, re-shuffle the queue
if (sptr_job->GetState() == Job::WAITING)
{
Poco::Timestamp oldStart = job->GetStartTime();
job->SetStartTime(oldStart += (DelayFor(newPriority) - DelayFor(oldPriority)));
m_JobQueueWaiting.Resort(job);
}
}
}