se.lth.cs.realtime
Class ActivityImpl

java.lang.Object
  se.lth.cs.realtime.ActivityImpl

All Implemented Interfaces:

Activity

public final class ActivityImpl

extends java.lang.Object

implements Activity

Let a java.lang.Thread object be treated as an Activity, which it (almost) is even if that interface (in se.lth.cs.realtime)is not implemented (in java.lang). Also threads that already implements Activity (instances of JThread and RTThread) can be wrapped, thereby ensuring that the constructor always returns a valid activity.

See Also:

License

Constructor Summary

ActivityImpl()
Create an activity representing the currently executing thread.

ActivityImpl(RTThread thread)
Create an activity object, that we already have, for completeness.

ActivityImpl(java.lang.Thread thread)
Make an activity out of a Java thread.

Method Summary

Environment	getEnv()
java.lang.Object	getThread() Not part of the Activity interface, obtain the represented Thread or RTThread.
Timebase	getTimebase()
boolean	isAlive() Calls isAlive for the represented thread.
void	join() Calls isAlive for the represented thread.
void	start() Calls isAlive for the represented thread.
void	terminate() Interrupt and join the represented thread.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ActivityImpl

public ActivityImpl()

Create an activity representing the currently executing thread.

ActivityImpl

public ActivityImpl(java.lang.Thread thread)

Make an activity out of a Java thread.

Parameters:

thread - the Java thread to represent.

ActivityImpl

public ActivityImpl(RTThread thread)

Create an activity object, that we already have, for completeness.

Parameters:

thread - the RTThread to be wrapped.

Method Detail

getThread

public java.lang.Object getThread()

Not part of the Activity interface, obtain the represented Thread or RTThread. The intended use of this class is only for ActivityEvents and configuration of activities. For example, to support obtaining the actual thread in RTEvent, to have the source and owner attributes referring to the actual thread objects, the RTEvent base class will use this method. Similar need might appear outside this package, hence the protected visibility.

Returns:

the (real-time or Java) tread object.

getEnv

public Environment getEnv()

Specified by:

getEnv in interface Activity

See Also:

Activity.getEnv()

getTimebase

public Timebase getTimebase()

Specified by:

getTimebase in interface Activity

See Also:

Activity.getTimebase()

isAlive

public boolean isAlive()

Calls isAlive for the represented thread.

Specified by:

isAlive in interface Activity

See Also:

Activity.isAlive(), Thread.isAlive()

join

public void join()
          throws java.lang.InterruptedException

Calls isAlive for the represented thread.

Specified by:

join in interface Activity

Throws:

java.lang.InterruptedException

See Also:

Activity.isAlive(), Thread.isAlive()

start

public void start()

Calls isAlive for the represented thread.

Specified by:

start in interface Activity

See Also:

Thread.isAlive(), Thread.isAlive()

terminate

public void terminate()

Interrupt and join the represented thread.

Specified by:

terminate in interface Activity

See Also:

Activity.terminate(), JThread.terminate()