Mercurial > hg > truffle
diff agent/src/share/classes/sun/jvm/hotspot/tools/PStack.java @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | a5838065ab24 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/tools/PStack.java Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,272 @@ +/* + * Copyright 2003-2006 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.tools; + +import java.io.*; +import java.util.*; +import sun.jvm.hotspot.code.*; +import sun.jvm.hotspot.interpreter.*; +import sun.jvm.hotspot.debugger.*; +import sun.jvm.hotspot.debugger.cdbg.*; +import sun.jvm.hotspot.oops.*; +import sun.jvm.hotspot.runtime.*; + +public class PStack extends Tool { + // in non-verbose mode, methodOops are not printed in java frames + public PStack(boolean v, boolean concurrentLocks) { + this.verbose = v; + this.concurrentLocks = concurrentLocks; + } + + public PStack() { + this(true, true); + } + + public void run() { + run(System.out); + } + + public void run(PrintStream out) { + Debugger dbg = getAgent().getDebugger(); + run(out, dbg, getAgent().isJavaMode()); + } + + public void run(PrintStream out, Debugger dbg) { + run(out, dbg, true); + } + + private void run(PrintStream out, Debugger dbg, final boolean isJava) { + CDebugger cdbg = dbg.getCDebugger(); + if (cdbg != null) { + ConcurrentLocksPrinter concLocksPrinter = null; + if (isJava) { + // compute and cache java Vframes. + initJFrameCache(); + if (concurrentLocks) { + concLocksPrinter = new ConcurrentLocksPrinter(); + } + // print Java level deadlocks + try { + DeadlockDetector.print(out); + } catch (Exception exp) { + out.println("can't print deadlock information: " + exp.getMessage()); + } + } + + List l = cdbg.getThreadList(); + final boolean cdbgCanDemangle = cdbg.canDemangle(); + for (Iterator itr = l.iterator() ; itr.hasNext();) { + ThreadProxy th = (ThreadProxy) itr.next(); + try { + CFrame f = cdbg.topFrameForThread(th); + out.print("----------------- "); + out.print(th); + out.println(" -----------------"); + while (f != null) { + ClosestSymbol sym = f.closestSymbolToPC(); + Address pc = f.pc(); + if (sym != null) { + String name = sym.getName(); + if (cdbgCanDemangle) { + name = cdbg.demangle(name); + } + out.print(pc + "\t" + name); + long diff = sym.getOffset(); + if (diff != 0L) { + out.print(" + 0x" + Long.toHexString(diff)); + } + out.println(); + } else { + if (isJava) { + // look for one or more java frames + String[] names = null; + // check interpreter frame + Interpreter interp = VM.getVM().getInterpreter(); + if (interp.contains(pc)) { + names = getJavaNames(th, f.localVariableBase()); + // print codelet name if we can't determine method + if (names == null || names.length == 0) { + out.print("<interpreter> "); + InterpreterCodelet ic = interp.getCodeletContaining(pc); + if (ic != null) { + String desc = ic.getDescription(); + if (desc != null) out.print(desc); + } + out.println(); + } + } else { + // look for known code blobs + CodeCache c = VM.getVM().getCodeCache(); + if (c.contains(pc)) { + out.print(pc + "\t"); + CodeBlob cb = c.findBlobUnsafe(pc); + if (cb.isNMethod()) { + names = getJavaNames(th, f.localVariableBase()); + // just print compiled code, if can't determine method + if (names == null || names.length == 0) { + out.println("<Unknown compiled code>"); + } + } else if (cb.isBufferBlob()) { + out.println("<StubRoutines>"); + } else if (cb.isRuntimeStub()) { + out.println("<RuntimeStub>"); + } else if (cb.isDeoptimizationStub()) { + out.println("<DeoptimizationStub>"); + } else if (cb.isUncommonTrapStub()) { + out.println("<UncommonTrap>"); + } else if (cb.isExceptionStub()) { + out.println("<ExceptionStub>"); + } else if (cb.isSafepointStub()) { + out.println("<SafepointStub>"); + } else { + out.println("<Unknown code blob>"); + } + } else { + printUnknown(out,pc); + } + } + // print java frames, if any + if (names != null && names.length != 0) { + // print java frame(s) + for (int i = 0; i < names.length; i++) { + out.println(pc + "\t" + names[i]); + } + } + } else { + printUnknown(out,pc); + } + } + f = f.sender(); + } + } catch (Exception exp) { + exp.printStackTrace(); + // continue, may be we can do a better job for other threads + } + if (isJava && concurrentLocks) { + JavaThread jthread = (JavaThread) proxyToThread.get(th); + if (jthread != null) { + concLocksPrinter.print(jthread, out); + } + } + } // for threads + } else { + if (getDebugeeType() == DEBUGEE_REMOTE) { + out.println("remote configuration is not yet implemented"); + } else { + out.println("not yet implemented (debugger does not support CDebugger)!"); + } + } + } + + protected boolean requiresVM() { + return false; + } + + public static void main(String[] args) throws Exception { + PStack t = new PStack(); + t.start(args); + t.stop(); + } + + // -- Internals only below this point + private Map jframeCache; // Map<ThreadProxy, JavaVFrame[]> + private Map proxyToThread; // Map<ThreadProxy, JavaThread> + private PrintStream out; + private boolean verbose; + private boolean concurrentLocks; + + private void initJFrameCache() { + // cache frames for subsequent reference + jframeCache = new HashMap(); + proxyToThread = new HashMap(); + Threads threads = VM.getVM().getThreads(); + for (JavaThread cur = threads.first(); cur != null; cur = cur.next()) { + List tmp = new ArrayList(10); + try { + for (JavaVFrame vf = cur.getLastJavaVFrameDbg(); vf != null; vf = vf.javaSender()) { + tmp.add(vf); + } + } catch (Exception exp) { + // may be we may get frames for other threads, continue + // after printing stack trace. + exp.printStackTrace(); + } + JavaVFrame[] jvframes = new JavaVFrame[tmp.size()]; + System.arraycopy(tmp.toArray(), 0, jvframes, 0, jvframes.length); + jframeCache.put(cur.getThreadProxy(), jvframes); + proxyToThread.put(cur.getThreadProxy(), cur); + } + } + + private void printUnknown(PrintStream out, Address pc) { + out.println(pc + "\t????????"); + } + + private String[] getJavaNames(ThreadProxy th, Address fp) { + if (fp == null) { + return null; + } + JavaVFrame[] jvframes = (JavaVFrame[]) jframeCache.get(th); + if (jvframes == null) return null; // not a java thread + List names = new ArrayList(10); + for (int fCount = 0; fCount < jvframes.length; fCount++) { + JavaVFrame vf = jvframes[fCount]; + Frame f = vf.getFrame(); + if (fp.equals(f.getFP())) { + StringBuffer sb = new StringBuffer(); + Method method = vf.getMethod(); + // a special char to identify java frames in output + sb.append("* "); + sb.append(method.externalNameAndSignature()); + sb.append(" bci:" + vf.getBCI()); + int lineNumber = method.getLineNumberFromBCI(vf.getBCI()); + if (lineNumber != -1) { + sb.append(" line:" + lineNumber); + } + + if (verbose) { + sb.append(" methodOop:" + method.getHandle()); + } + + if (vf.isCompiledFrame()) { + sb.append(" (Compiled frame"); + if (vf.isDeoptimized()) { + sb.append(" [deoptimized]"); + } + } else if (vf.isInterpretedFrame()) { + sb.append(" (Interpreted frame"); + } + if (vf.mayBeImpreciseDbg()) { + sb.append("; information may be imprecise"); + } + sb.append(")"); + names.add(sb.toString()); + } + } + String[] res = new String[names.size()]; + System.arraycopy(names.toArray(), 0, res, 0, res.length); + return res; + } +}