Mercurial > hg > truffle
view graal/com.oracle.jvmci.code/src/com/oracle/jvmci/code/DebugInfo.java @ 21607:71b338926f2e
moved JVMCI classes into their own distributions (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 29 May 2015 22:27:38 +0200 |
parents | f5b549811bac |
children |
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/* * Copyright (c) 2009, 2011, 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 com.oracle.jvmci.code; import com.oracle.jvmci.meta.Value; import java.util.*; /** * Represents the debugging information for a particular point of execution. This information * includes: * <ul> * <li>a {@linkplain #getBytecodePosition() bytecode position}</li> * <li>a reference map for registers and stack slots in the current frame</li> * <li>a map from bytecode locals and operand stack slots to their values or locations from which * their values can be read</li> * <li>a map from the registers (in the caller's frame) to the slots where they are saved in the * current frame</li> * </ul> */ public final class DebugInfo { private final BytecodePosition bytecodePosition; private final ReferenceMap referenceMap; @SuppressWarnings("unused") private final Value[] virtualObjectMapping; private RegisterSaveLayout calleeSaveInfo; /** * Creates a new {@link DebugInfo} from the given values. * * @param codePos the {@linkplain BytecodePosition code position} or {@linkplain BytecodeFrame * frame} info * @param referenceMap the reference map * @param virtualObjectMapping the mapping of {@link VirtualObject}s to their real values */ public DebugInfo(BytecodePosition codePos, ReferenceMap referenceMap, Value[] virtualObjectMapping) { this.bytecodePosition = codePos; this.referenceMap = referenceMap; this.virtualObjectMapping = virtualObjectMapping; } public DebugInfo(BytecodePosition codePos) { this(codePos, null, null); } /** * @return {@code true} if this debug information has a frame */ public boolean hasFrame() { return getBytecodePosition() instanceof BytecodeFrame; } /** * Gets the deoptimization information for each inlined frame (if available). * * @return {@code null} if no frame de-opt info is {@linkplain #hasFrame() available} */ public BytecodeFrame frame() { if (hasFrame()) { return (BytecodeFrame) getBytecodePosition(); } return null; } @Override public String toString() { return CodeUtil.append(new StringBuilder(100), this, null).toString(); } /** * @return The code position (including all inlined methods) of this debug info. If this is a * {@link BytecodeFrame} instance, then it is also the deoptimization information for * each inlined frame. */ public BytecodePosition getBytecodePosition() { return bytecodePosition; } public ReferenceMap getReferenceMap() { return referenceMap; } /** * Sets the map from the registers (in the caller's frame) to the slots where they are saved in * the current frame. */ public void setCalleeSaveInfo(RegisterSaveLayout calleeSaveInfo) { this.calleeSaveInfo = calleeSaveInfo; } /** * Gets the map from the registers (in the caller's frame) to the slots where they are saved in * the current frame. If no such information is available, {@code null} is returned. */ public RegisterSaveLayout getCalleeSaveInfo() { return calleeSaveInfo; } @Override public int hashCode() { throw new UnsupportedOperationException("hashCode"); } @Override public boolean equals(Object obj) { if (this == obj) { return true; } if (obj instanceof DebugInfo) { DebugInfo that = (DebugInfo) obj; if (Objects.equals(this.bytecodePosition, that.bytecodePosition) && Objects.equals(this.calleeSaveInfo, that.calleeSaveInfo) && Objects.equals(this.referenceMap, that.referenceMap)) { return true; } } return false; } }