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 */ 24 25 package rtm; 26 27 import jdk.test.lib.Asserts; 28 29 import java.util.HashMap; 30 import java.util.Map; 31 32 /** 33 * Type of transactional execution abort. 34 * For more details on different abort types please see 35 * shared/vm/runtime/rtmLocking.hpp 36 */ 37 public enum AbortType { 38 XABORT(0), 39 RETRIABLE(1), 40 MEM_CONFLICT(2), 41 BUF_OVERFLOW(3), 42 DEBUG_BREAKPOINT(4), 43 NESTED_ABORT(5); 44 45 private final int type; 46 private static final Map<Integer, AbortType> LOOKUP_MAP = new HashMap<>(); 47 48 static { 49 for (AbortType abortType : AbortType.values()) { 50 Asserts.assertFalse(LOOKUP_MAP.containsKey(abortType.type), 51 "Abort type values should be unique."); 52 LOOKUP_MAP.put(abortType.type, abortType); 53 } 54 } 55 56 private AbortType(int type) { 57 this.type = type; 58 } 59 60 /** 61 * Returns AbortProvoker for aborts represented by this abort type. 62 * 63 * @return an AbortProvoker instance 64 */ 65 public AbortProvoker provoker() { 66 return AbortType.createNewProvoker(this); 67 } 68 69 public static AbortType lookup(int type) { 70 Asserts.assertLT(type, AbortType.values().length, 71 "Unknown abort type."); 72 return LOOKUP_MAP.get(type); 73 } 74 75 /** 76 * Returns transaction execution abort provoker for specified abortion type. 77 * 78 * @param type a type of abort which will be forced by returned 79 * AbortProvoker instance. 80 * @return AbortProvoker instance that will force abort of specified type 81 * @throws RuntimeException if there is no provoker for specified type 82 */ 83 private static AbortProvoker createNewProvoker(AbortType type) { 84 switch (type) { 85 case XABORT: 86 return new XAbortProvoker(); 87 case MEM_CONFLICT: 88 return new MemoryConflictProvoker(); 89 case BUF_OVERFLOW: 90 return new BufferOverflowProvoker(); 91 case NESTED_ABORT: 92 return new NestedAbortProvoker(); 93 default: 94 throw new RuntimeException("No provoker exists for type " 95 + type.name()); 96 } 97 } 98 99 @Override 100 public String toString() { 101 return Integer.toString(type); 102 } 103 }