Can we assign the jobs of a thread to other thread

Question

hi
need some help
suppose say a thread A is running and doing some processing. Can this thread A, at a specified time delegate all its jobs to an other thread B, and exit
gracefully? The thread B should take up the jobs left over by thread A and continue processing them.
If so how can we implement this?
please help me.
thanks in advance
sunil

Answer 1

As has been said in other recent discussions regarding threads, a thread pool and a task queue would do the job.
Two main decisions: How to break down the tasks at hand to allow a "graceful transfer" and how to activate the new thread?
Regrading 1: You need to break down the overall task into subtasks, which can be performed by individual methods and that can pass on the state of excecution to the next step in the process.
Either the processing sequence is predetermined or the next step is part of the result set of the current subtask. The queue then holds these tasks for assignment to threads.
Regarding 2: Central thread generation vs. decentral approach: For a clean and debuggable design,
you should go for one "factory" in you application, that is creating threads and handles task assignment. That has the additional benefit, that coordination and load-balancing can be implemented as well (to avoid too many threads or support partial paralel processing). Also, you should re-use threads, instead of letting them die and re-create new ones.