| /* |
| * Copyright (c) 2010, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package vm.mlvm.share; |
| |
| import vm.share.options.Option; |
| |
| import java.util.concurrent.CyclicBarrier; |
| |
| |
| public abstract class MultiThreadedTest extends MlvmTest { |
| |
| @Option(name = "threadsExtra", default_value = "1", |
| description = "Summand of absolute thread count that does not" |
| + " depend on CPU count") |
| private int threadsExtra; |
| |
| @Option(name = "threadsPerCpu", default_value = "0", |
| description = "Summand of absolute thread count that is multiplied" |
| + " by CPU count") |
| private int threadsPerCpu; |
| |
| protected MultiThreadedTest() { |
| // fields will be initialized later by the Option framework |
| } |
| |
| protected abstract boolean runThread(int threadNum) throws Throwable; |
| |
| protected int calcThreadNum() { |
| // TODO: multiply by StressThreadFactor: JDK-8142970 |
| return threadsPerCpu * Runtime.getRuntime().availableProcessors() |
| + threadsExtra; |
| } |
| |
| @Override |
| public boolean run() throws Throwable { |
| Thread.UncaughtExceptionHandler exHandler = (Thread t, Throwable e) -> { |
| markTestFailed("Exception in thread %s" + t.getName(), e); |
| }; |
| int threadNum = calcThreadNum(); |
| Env.traceNormal("Threads to start in this test: " + threadNum); |
| final CyclicBarrier startBarrier = new CyclicBarrier(threadNum + 1); |
| |
| Thread[] threads = new Thread[threadNum]; |
| for (int i = 0; i < threadNum; i++) { |
| final int ii = i; |
| threads[i] = new Thread(() -> { |
| boolean passed = false; |
| try { |
| startBarrier.await(); |
| if (runThread(ii)) { |
| passed = true; |
| } else { |
| Env.complain("Failed test in %s", |
| Thread.currentThread()); |
| } |
| } catch (Throwable e) { |
| Env.complain(e, "Caught exception in %s", |
| Thread.currentThread()); |
| } |
| if (!passed) { |
| markTestFailed("Thread " + Thread.currentThread() |
| + " failed"); |
| } |
| }); |
| threads[i].setUncaughtExceptionHandler(exHandler); |
| threads[i].start(); |
| } |
| |
| startBarrier.await(); |
| Env.traceNormal(threadNum + " threads have started"); |
| |
| for (int i = 0; i < threadNum; i++) { |
| threads[i].join(); |
| } |
| |
| Env.traceNormal("All threads have finished"); |
| return true; |
| } |
| |
| } |