1 /* 2 * Copyright (c) 2016, 2018, 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 org.graalvm.compiler.core.common.alloc; 26 27 import java.util.ArrayList; 28 import java.util.Arrays; 29 import java.util.Collection; 30 31 import org.graalvm.compiler.core.common.cfg.AbstractBlockBase; 32 33 /** 34 * Represents a list of sequentially executed {@code AbstractBlockBase blocks}. 35 */ 36 public class Trace { 37 private final AbstractBlockBase<?>[] blocks; 38 private final ArrayList<Trace> successors; 39 private int id = -1; 40 41 public Trace(Collection<AbstractBlockBase<?>> blocks) { 42 this(blocks.toArray(new AbstractBlockBase<?>[0])); 43 } 44 45 public Trace(AbstractBlockBase<?>[] blocks) { 46 this.blocks = blocks; 47 this.successors = new ArrayList<>(); 48 } 49 50 public AbstractBlockBase<?>[] getBlocks() { 51 return blocks; 52 } 53 54 public ArrayList<Trace> getSuccessors() { 55 return successors; 56 } 57 58 public int size() { 59 return getBlocks().length; 60 } 61 62 @Override 63 public String toString() { 64 return "Trace" + Arrays.toString(blocks); 65 } 66 67 public int getId() { 68 assert id != -1 : "id not initialized!"; 69 return id; 70 } 71 72 void setId(int id) { 73 this.id = id; 74 } 75 }