/**
* This method stops the scheduler execution. Before returning, it waits the
* end of all the running tasks previously launched. Once the scheduler has
* been stopped it can be started again with a start() call.
*
* @throws IllegalStateException
* Thrown if this scheduler is not started.
*/
public void stop()
{
lock (lockObj)
{
if (!started)
{
throw new SystemException("Scheduler not started");
}
// Interrupts the timer and waits for its death.
timer.Interrupt();
tillThreadDies(timer.Thread);
timer = null;
// Interrupts any running launcher and waits for its death.
for (; ;)
{
LauncherThread launcher = null;
lock (launchers)
{
if (launchers.Count == 0)
{
break;
}
launcher = launchers[0];
launchers.RemoveAt(0);
}
launcher.Interrupt();
tillThreadDies(launcher.Thread);
}
launchers = null;
// Interrupts any running executor and waits for its death.
// Before exiting wait for all the active tasks end.
for (; ;)
{
TaskExecutor executor = null;
lock (executors)
{
if (executors.Count == 0)
{
break;
}
executor = executors[0];
executors.RemoveAt(0);
}
if (executor.CanBeStopped())
{
executor.Stop();
}
tillExecutorDies(executor);
}
executors = null;
// Change the state of the object.
started = false;
}
}
/**
* This method starts the scheduler. When the scheduled is started the
* supplied tasks are executed at the given moment.
*
* @throws IllegalStateException
* Thrown if this scheduler is already started.
*/
public void start()
{
lock (lockObj)
{
if (started)
{
throw new SystemException("Scheduler already started");
}
// Initializes required lists.
launchers = new List <LauncherThread>();
executors = new List <TaskExecutor>();
// Starts the timer thread.
timer = new TimerThread(this);
timer.SetDaemon(daemon);
timer.Start();
// Change the state of the scheduler.
started = true;
}
}
/**
* This method stops the scheduler execution. Before returning, it waits the
* end of all the running tasks previously launched. Once the scheduler has
* been stopped it can be started again with a start() call.
*
* @throws IllegalStateException
* Thrown if this scheduler is not started.
*/
public void stop()
{
lock (lockObj)
{
if (!started)
{
throw new SystemException("Scheduler not started");
}
// Interrupts the timer and waits for its death.
timer.Interrupt();
tillThreadDies(timer.Thread);
timer = null;
// Interrupts any running launcher and waits for its death.
for (; ; )
{
LauncherThread launcher = null;
lock (launchers)
{
if (launchers.Count == 0)
{
break;
}
launcher = launchers[0];
launchers.RemoveAt(0);
}
launcher.Interrupt();
tillThreadDies(launcher.Thread);
}
launchers = null;
// Interrupts any running executor and waits for its death.
// Before exiting wait for all the active tasks end.
for (; ; )
{
TaskExecutor executor = null;
lock (executors)
{
if (executors.Count == 0)
{
break;
}
executor = executors[0];
executors.RemoveAt(0);
}
if (executor.CanBeStopped())
{
executor.Stop();
}
tillExecutorDies(executor);
}
executors = null;
// Change the state of the object.
started = false;
}
}
/**
* This method starts the scheduler. When the scheduled is started the
* supplied tasks are executed at the given moment.
*
* @throws IllegalStateException
* Thrown if this scheduler is already started.
*/
public void start()
{
lock (lockObj)
{
if (started)
{
throw new SystemException("Scheduler already started");
}
// Initializes required lists.
launchers = new List<LauncherThread>();
executors = new List<TaskExecutor>();
// Starts the timer thread.
timer = new TimerThread(this);
timer.SetDaemon(daemon);
timer.Start();
// Change the state of the scheduler.
started = true;
}
}
