static void tests(Class mapClass, int numTests, int sizeIndex) {
try {
String[] key = readWords(sizeIndex);
int size = key.length;
System.out.print("n = " + LoopHelpers.rightJustify(size) + " : ");
long least = Long.MAX_VALUE;
for (int i = 0; i < numTests; ++i) {
Map<String, String> m = newMap(mapClass);
long t = doTest(i, mapClass.getName(), m, key);
if (t < least) least = t;
m.clear();
m = null;
}
long nano = Math.round(1000000.0 * (least) / NOPS);
System.out.println(LoopHelpers.rightJustify(nano) + " ns per op");
} catch (IOException ignore) {
return; // skip test if can't read file
}
}
static void oneTest(int iters) throws Exception {
long startTime = System.nanoTime();
new Thread(new Producer(ecs, iters)).start();
int r = 0;
for (int i = 0; i < iters; ++i) r += ecs.take().get().intValue();
long elapsed = System.nanoTime() - startTime;
long tpi = elapsed / iters;
if (print) System.out.println("\t: " + LoopHelpers.rightJustify(tpi) + " ns per task");
if (r == 0) // avoid overoptimization
System.out.println("useless result: " + r);
}
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();
}