| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package jdk.vm.ci.code.site; |
| |
| import java.util.Map; |
| import java.util.Objects; |
| |
| import jdk.vm.ci.code.BytecodePosition; |
| import jdk.vm.ci.code.DebugInfo; |
| import jdk.vm.ci.code.ReferenceMap; |
| import jdk.vm.ci.code.Register; |
| import jdk.vm.ci.code.RegisterSaveLayout; |
| import jdk.vm.ci.meta.MetaUtil; |
| |
| /** |
| * Represents an infopoint with associated debug info. Note that safepoints are also infopoints. |
| */ |
| public class Infopoint extends Site implements Comparable<Infopoint> { |
| |
| public final DebugInfo debugInfo; |
| |
| public final InfopointReason reason; |
| |
| public Infopoint(int pcOffset, DebugInfo debugInfo, InfopointReason reason) { |
| super(pcOffset); |
| this.debugInfo = debugInfo; |
| this.reason = reason; |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append(pcOffset); |
| sb.append("[<infopoint>]"); |
| appendDebugInfo(sb, debugInfo); |
| return sb.toString(); |
| } |
| |
| @Override |
| public int compareTo(Infopoint o) { |
| if (pcOffset < o.pcOffset) { |
| return -1; |
| } else if (pcOffset > o.pcOffset) { |
| return 1; |
| } |
| return this.reason.compareTo(o.reason); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj != null && obj.getClass() == getClass()) { |
| Infopoint that = (Infopoint) obj; |
| if (this.pcOffset == that.pcOffset && Objects.equals(this.debugInfo, that.debugInfo) && Objects.equals(this.reason, that.reason)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| protected static void appendDebugInfo(StringBuilder sb, DebugInfo info) { |
| if (info != null) { |
| ReferenceMap refMap = info.getReferenceMap(); |
| if (refMap != null) { |
| sb.append(refMap.toString()); |
| sb.append(']'); |
| } |
| RegisterSaveLayout calleeSaveInfo = info.getCalleeSaveInfo(); |
| if (calleeSaveInfo != null) { |
| sb.append(" callee-save-info["); |
| String sep = ""; |
| for (Map.Entry<Register, Integer> e : calleeSaveInfo.registersToSlots(true).entrySet()) { |
| sb.append(sep).append(e.getKey()).append("->").append(e.getValue()); |
| sep = ", "; |
| } |
| sb.append(']'); |
| } |
| BytecodePosition codePos = info.getBytecodePosition(); |
| if (codePos != null) { |
| MetaUtil.appendLocation(sb.append(" "), codePos.getMethod(), codePos.getBCI()); |
| if (info.hasFrame()) { |
| sb.append(" #locals=").append(info.frame().numLocals).append(" #expr=").append(info.frame().numStack); |
| if (info.frame().numLocks > 0) { |
| sb.append(" #locks=").append(info.frame().numLocks); |
| } |
| } |
| } |
| } |
| } |
| } |