Re: Multithreading one-at-a-time-problem

Lew <>
Tue, 09 Oct 2007 18:40:51 -0400
Morty wrote:

 public void run() {
  while (this.countValue < this.maxValue) {
  System.out.println(this.getName()+" value "+this.countValue);

Lew wrote:

'yield()' is a static method. To avoid confusion, always invoke static
entities through their class, thus:


And that might not even help you, since yield() is not guaranteed to cause a
thread to yield its timeslice.

Thread.yield is a purely heuristic hint advising the JVM that
if there are any other runnable but non-running threads, the
scheduler should run one or more of these threads rather than
the current thread.
The JVM may interpret this hint in any way it likes.

excerpted from Doug Lea's excellent /Concurrent Programming in Java/, which
goes on to say,

On JVM implementations that employ pre-emptive scheduling
policies, especially those on multiprocessors, it is possible
and even desirable that
the scheduler will simply ignore this hint provided by yield.


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