public void resetScore() {
/*
* score.set 与char2type.set这两个方法，虽然没有以原子的方式执行完成，但是
却不影响整个类的安全性，因为这两个方法没有相互依赖，只需保证单个方法以原子的方式执行即可，
这个情况与 java并发编程中的因式分解那个例子不同，
*/
score.set(0);
char2type.set(-1);
setScore();
}
static void oneRun(BlockingQueue<Runnable> q, int nThreads, int iters, boolean print)
throws Exception {
ThreadPoolExecutor pool =
new ThreadPoolExecutor(nThreads + 1, Integer.MAX_VALUE, 1L, TimeUnit.SECONDS, q);
CountDownLatch done = new CountDownLatch(iters);
remaining.set(nThreads - 1);
pool.prestartAllCoreThreads();
Task t = new Task(pool, done);
long start = System.nanoTime();
pool.execute(t);
done.await();
long time = System.nanoTime() - start;
if (print) System.out.println("\t: " + LoopHelpers.rightJustify(time / iters) + " ns per task");
q.clear();
Thread.sleep(100);
pool.shutdown();
Thread.sleep(100);
pool.shutdownNow();
}
/** {@inheritDoc} */
@Override
public void onCollision(
Collection<GridCollisionJobContext> waitJobs,
Collection<GridCollisionJobContext> activeJobs) {
assert waitJobs != null;
assert activeJobs != null;
int activeSize = F.size(activeJobs, RUNNING_JOBS);
waitingCnt.set(waitJobs.size());
runningCnt.set(activeSize);
heldCnt.set(activeJobs.size() - activeSize);
int waitSize = waitJobs.size();
int activateCnt = parallelJobsNum - activeSize;
if (activateCnt > 0 && !waitJobs.isEmpty()) {
if (waitJobs.size() <= activateCnt) {
for (GridCollisionJobContext waitJob : waitJobs) {
waitJob.activate();
waitSize--;
}
} else {
List<GridCollisionJobContext> passiveList =
new ArrayList<GridCollisionJobContext>(waitJobs);
Collections.sort(
passiveList,
new Comparator<GridCollisionJobContext>() {
/** {@inheritDoc} */
@Override
public int compare(GridCollisionJobContext o1, GridCollisionJobContext o2) {
int p1 = getJobPriority(o1);
int p2 = getJobPriority(o2);
return p1 < p2 ? 1 : p1 == p2 ? 0 : -1;
}
});
if (preventStarvation) bumpPriority(waitJobs, passiveList);
for (int i = 0; i < activateCnt; i++) {
passiveList.get(i).activate();
waitSize--;
}
}
}
if (waitSize > waitJobsNum) {
List<GridCollisionJobContext> waitList = new ArrayList<GridCollisionJobContext>(waitJobs);
// Put jobs with highest priority first.
Collections.sort(
waitList,
new Comparator<GridCollisionJobContext>() {
/** {@inheritDoc} */
@Override
public int compare(GridCollisionJobContext o1, GridCollisionJobContext o2) {
int p1 = getJobPriority(o1);
int p2 = getJobPriority(o2);
return p1 < p2 ? 1 : p1 == p2 ? 0 : -1;
}
});
int skip = waitJobs.size() - waitSize;
int i = 0;
for (GridCollisionJobContext waitCtx : waitList) {
if (++i >= skip) {
waitCtx.cancel();
if (--waitSize <= waitJobsNum) break;
}
}
}
}
public void run() {
long start, end;
// Start timer
start = System.currentTimeMillis();
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
myint.set(50);
end = System.currentTimeMillis();
System.out.println(
"W contention on atomic "
+ (end - start)
+ " ms BID: "
+ VM.getIsland()
+ " CID: "
+ VM.getCore());
}
