JobQueue::RunningJobInfo JobQueue::acquire_scheduled_job()
{
Spinlock::ScopedLock lock(impl->m_spinlock);
// Bail out if there is no scheduled job.
if (impl->m_scheduled_jobs.empty())
return RunningJobInfo(JobInfo(0, false), impl->m_running_jobs.end());
// Move the next scheduled job to the end of the queue of running jobs.
const JobInfo job_info = impl->m_scheduled_jobs.front();
impl->m_scheduled_jobs.pop_front();
impl->m_running_jobs.push_back(job_info);
return RunningJobInfo(job_info, pred(impl->m_running_jobs.end()));
}
JobQueue::RunningJobInfo JobQueue::acquire_scheduled_job_unlocked()
{
// Bail out if there is no scheduled job.
if (impl->m_scheduled_jobs.empty())
return RunningJobInfo(JobInfo(0, false), impl->m_running_jobs.end());
// Move the next scheduled job to the end of the queue of running jobs.
const JobInfo job_info = impl->m_scheduled_jobs.front();
impl->m_scheduled_jobs.pop_front();
impl->m_running_jobs.push_back(job_info);
// Notify worker threads that a job has moved from the scheduled to the running state.
impl->m_event.notify_all();
return RunningJobInfo(job_info, pred(impl->m_running_jobs.end()));
}
