Mercurial > hg > truffle
diff agent/src/share/classes/sun/jvm/hotspot/bugspot/StackTraceEntry.java @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/bugspot/StackTraceEntry.java Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,87 @@ +/* + * 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(); + } + } +}