| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.cassandra.simulator; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.slf4j.Logger; |
| |
| import io.netty.util.concurrent.FastThreadLocal; |
| import org.apache.cassandra.utils.concurrent.Threads; |
| |
| public class SimulatorUtils |
| { |
| public static RuntimeException failWithOOM() |
| { |
| List<long[]> oom = new ArrayList<>(); |
| for (int i = 0 ; i < 1024 ; ++i) |
| oom.add(new long[0x7fffffff]); |
| throw new AssertionError(); |
| } |
| |
| public static void dumpStackTraces(Logger logger) |
| { |
| Map<Thread, StackTraceElement[]> threadMap = Thread.getAllStackTraces(); |
| threadMap.forEach((thread, ste) -> { |
| logger.error("{}:\n {}", thread, Threads.prettyPrint(ste, false, " ", "\n", "")); |
| }); |
| FastThreadLocal.destroy(); |
| } |
| } |