| /* |
| * Copyright 2001-2002 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| package sun.jvm.hotspot.bugspot; |
| |
| import sun.jvm.hotspot.debugger.cdbg.*; |
| import sun.jvm.hotspot.oops.*; |
| import sun.jvm.hotspot.runtime.*; |
| |
| /** This class describes a frame in a stack trace. It abstracts over |
| C/C++ and Java frames. */ |
| |
| public class StackTraceEntry { |
| private CFrame cFrame; |
| private CDebugger dbg; |
| private JavaVFrame javaFrame; |
| private String value; // What is displayed in a stack trace |
| // For merging C and Java stack traces. |
| // For more precise stack traces, should probably have a way to |
| // convert a CFrame to a sun.jvm.hotspot.runtime.Frame. For now, |
| // doing similar algorithm to jdbx (which does not have intimate |
| // knowledge of the VM). |
| private boolean isUnknownCFrame; |
| |
| public StackTraceEntry(CFrame cFrame, CDebugger dbg) { |
| this.cFrame = cFrame; |
| this.dbg = dbg; |
| computeValue(); |
| } |
| |
| public StackTraceEntry(JavaVFrame javaFrame) { |
| this.javaFrame = javaFrame; |
| computeValue(); |
| } |
| |
| public boolean isCFrame() { return (cFrame != null); } |
| public boolean isJavaFrame() { return (javaFrame != null); } |
| public CFrame getCFrame() { return cFrame; } |
| public JavaVFrame getJavaFrame() { return javaFrame; } |
| public boolean isUnknownCFrame() { return isUnknownCFrame; } |
| public String toString() { |
| return value; |
| } |
| |
| private void computeValue() { |
| isUnknownCFrame = true; |
| value = "<unknown>"; |
| if (cFrame != null) { |
| PCFinder.Info info = PCFinder.findPC(cFrame.pc(), cFrame.loadObjectForPC(), dbg); |
| if (info.getName() != null) { |
| value = "(C) " + info.getName(); |
| isUnknownCFrame = false; |
| if (info.getConfidence() == PCFinder.LOW_CONFIDENCE) { |
| value = value + " (?)"; |
| } |
| if (info.getOffset() >= 0) { |
| value = value + " + 0x" + Long.toHexString(info.getOffset()); |
| } |
| } |
| } else if (javaFrame != null) { |
| isUnknownCFrame = false; |
| Method m = javaFrame.getMethod(); |
| value = "(J) " + m.externalNameAndSignature(); |
| } |
| } |
| } |