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 }