--- jsr166/src/test/loops/SimpleWriteLockLoops.java 2005/05/02 19:19:38 1.1 +++ jsr166/src/test/loops/SimpleWriteLockLoops.java 2009/11/03 01:04:02 1.5 @@ -1,11 +1,7 @@ /* - * @test - * @synopsis multiple threads using a single lock - */ -/* * Written by Doug Lea with assistance from members of JCP JSR-166 - * Expert Group and released to the public domain. Use, modify, and - * redistribute this code in any way without acknowledgement. + * Expert Group and released to the public domain, as explained at + * http://creativecommons.org/licenses/publicdomain */ import java.util.concurrent.*; @@ -20,7 +16,7 @@ public final class SimpleWriteLockLoops public static void main(String[] args) throws Exception { int maxThreads = 100; - if (args.length > 0) + if (args.length > 0) maxThreads = Integer.parseInt(args[0]); print = true; @@ -52,15 +48,15 @@ public final class SimpleWriteLockLoops } final void test() throws Exception { - for (int i = 0; i < nthreads; ++i) + for (int i = 0; i < nthreads; ++i) pool.execute(this); barrier.await(); barrier.await(); if (print) { long time = timer.getTime(); - long tpi = time / ((long)iters * nthreads); + long tpi = time / ((long) iters * nthreads); System.out.print("\t" + LoopHelpers.rightJustify(tpi) + " ns per lock"); - double secs = (double)(time) / 1000000000.0; + double secs = (double) time / 1000000000.0; System.out.println("\t " + secs + "s run time"); } @@ -72,7 +68,7 @@ public final class SimpleWriteLockLoops public final void run() { final Lock lock = this.lock.writeLock(); try { - barrier.await(); + barrier.await(); int sum = v + 1; int x = 0; int n = iters; @@ -82,7 +78,7 @@ public final class SimpleWriteLockLoops if (k > 0) { x = v; while (k-- > 0) - x = LoopHelpers.compute4(x); + x = LoopHelpers.compute6(x); v = x; } else x = sum + 1; @@ -90,13 +86,13 @@ public final class SimpleWriteLockLoops if ((x += readBarrier) == 0) ++readBarrier; for (int l = x & 7; l > 0; --l) - sum += LoopHelpers.compute4(sum); - } + sum += LoopHelpers.compute6(sum); + } barrier.await(); result += sum; } - catch (Exception ie) { - return; + catch (Exception ie) { + return; } } }