/** \brief Clean up privileged jobs if we're a privileged thread.
*
* Ensures that a privileged job can't queue up other privileged jobs that would potentially create deadlocks.
*
* \param pfunctor Task to execute.
* \param scope Previously created scoped lock.
* \param tid Id of this thread.
* \return True if cleaned up the queue, false if not.
*/
static bool cleanup_privileged(const Task &pfunctor, boost::mutex::scoped_lock &pscope, boost::thread::id tid)
{
if(!is_primary_thread(tid))
{
return false;
}
while(inner_run_privileged(pscope));
pscope.unlock();
pfunctor();
pscope.lock();
return true;
}
/** \brief Clean up important jobs if we're a normal thread.
*
* Ensured that an important job can't queue up other important jobs that could potentially create deadlocks.
*
* \param pfunctor Task to execute.
* \param scope Previously created scoped lock.
* \param tid Id of this thread.
* \return True if cleaned up the queue, false if not.
*/
static bool cleanup_important(const Task &pfunctor, boost::mutex::scoped_lock &pscope, boost::thread::id tid)
{
if(threads.end() == threads.find(tid))
{
return false;
}
while(inner_run_important(pscope));
pscope.unlock();
pfunctor();
pscope.lock();
return true;
}
/** \brief Inner task running, important (promised) tasks.
*
* \param pscope Previously created scoped lock.
* \return True if executed something, false if not.
*/
static bool inner_run_important(boost::mutex::scoped_lock &pscope)
{
if(tasks_important.empty())
{
return false;
}
Promise *promise = tasks_important.get();
pscope.unlock();
promise->task();
pscope.lock();
return true;
}
/** \brief Inner task running, privileged tasks.
*
* \param tlist Task list.
* \param scope Previously created scoped lock.
* \return True if executed something, false if not.
*/
static bool inner_run_privileged(boost::mutex::scoped_lock &pscope)
{
if(tasks_privileged.empty())
{
return false;
}
Task functor = tasks_privileged.get();
pscope.unlock();
functor();
pscope.lock();
return true;
}
inline void
boost_threaded_monitor::lock() {
lock_.lock();
}