1/* 2 * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24package compiler.testlibrary.rtm; 25 26import jdk.test.lib.Asserts; 27 28import java.util.HashMap; 29import java.util.Map; 30 31/** 32 * Type of transactional execution abort. 33 * For more details on different abort types please see 34 * shared/vm/runtime/rtmLocking.hpp 35 */ 36public enum AbortType { 37 XABORT(0), 38 RETRIABLE(1), 39 MEM_CONFLICT(2), 40 BUF_OVERFLOW(3), 41 DEBUG_BREAKPOINT(4), 42 NESTED_ABORT(5); 43 44 private final int type; 45 private static final Map<Integer, AbortType> LOOKUP_MAP = new HashMap<>(); 46 47 static { 48 for (AbortType abortType : AbortType.values()) { 49 Asserts.assertFalse(LOOKUP_MAP.containsKey(abortType.type), 50 "Abort type values should be unique."); 51 LOOKUP_MAP.put(abortType.type, abortType); 52 } 53 } 54 55 private AbortType(int type) { 56 this.type = type; 57 } 58 59 /** 60 * Returns AbortProvoker for aborts represented by this abort type. 61 * 62 * @return an AbortProvoker instance 63 */ 64 public AbortProvoker provoker() { 65 return AbortType.createNewProvoker(this); 66 } 67 68 public static AbortType lookup(int type) { 69 Asserts.assertLT(type, AbortType.values().length, 70 "Unknown abort type."); 71 return LOOKUP_MAP.get(type); 72 } 73 74 /** 75 * Returns transaction execution abort provoker for specified abortion type. 76 * 77 * @param type a type of abort which will be forced by returned 78 * AbortProvoker instance. 79 * @return AbortProvoker instance that will force abort of specified type 80 * @throws RuntimeException if there is no provoker for specified type 81 */ 82 private static AbortProvoker createNewProvoker(AbortType type) { 83 switch (type) { 84 case XABORT: 85 return new XAbortProvoker(); 86 case MEM_CONFLICT: 87 return new MemoryConflictProvoker(); 88 case BUF_OVERFLOW: 89 return new BufferOverflowProvoker(); 90 case NESTED_ABORT: 91 return new NestedAbortProvoker(); 92 default: 93 throw new RuntimeException("No provoker exists for type " 94 + type.name()); 95 } 96 } 97 98 @Override 99 public String toString() { 100 return Integer.toString(type); 101 } 102} 103