| /* |
| * Copyright (c) 2009, 2015, 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; |
| |
| import java.util.Objects; |
| |
| /** |
| * 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 ReferenceMap referenceMap; |
| private final VirtualObject[] 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 virtualObjectMapping the mapping of {@link VirtualObject}s to their real values. This |
| * array is now owned by this object and must not be mutated by the caller. |
| */ |
| @SuppressFBWarnings(value = "EI_EXPOSE_REP2", justification = "caller transfers ownership of `virtualObjectMapping`") |
| public DebugInfo(BytecodePosition codePos, VirtualObject[] virtualObjectMapping) { |
| this.bytecodePosition = codePos; |
| this.virtualObjectMapping = virtualObjectMapping; |
| } |
| |
| public DebugInfo(BytecodePosition codePos) { |
| this(codePos, null); |
| } |
| |
| public void setReferenceMap(ReferenceMap referenceMap) { |
| this.referenceMap = referenceMap; |
| } |
| |
| /** |
| * @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; |
| } |
| |
| public VirtualObject[] getVirtualObjectMapping() { |
| return virtualObjectMapping; |
| } |
| |
| /** |
| * 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; |
| } |
| } |