author | dbuck |
Thu, 06 Jul 2017 09:31:01 -0400 | |
changeset 46636 | 26b8de0359a0 |
parent 45371 | 5d0b68ea07c3 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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package sun.jvm.hotspot.runtime; |
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import java.io.*; |
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import java.util.*; |
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import sun.jvm.hotspot.debugger.*; |
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import sun.jvm.hotspot.oops.*; |
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import sun.jvm.hotspot.types.*; |
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import sun.jvm.hotspot.utilities.*; |
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/** This is an abstract class because there are certain OS- and |
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CPU-specific operations (like the setting and getting of the last |
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Java frame pointer) which need to be factored out. These |
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operations are implemented by, for example, |
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SolarisSPARCJavaThread, and the concrete subclasses are |
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instantiated by the JavaThreadFactory in the Threads class. */ |
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public class JavaThread extends Thread { |
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private static final boolean DEBUG = System.getProperty("sun.jvm.hotspot.runtime.JavaThread.DEBUG") != null; |
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private static AddressField nextField; |
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private static sun.jvm.hotspot.types.OopField threadObjField; |
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private static AddressField anchorField; |
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private static AddressField lastJavaSPField; |
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private static AddressField lastJavaPCField; |
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private static CIntegerField threadStateField; |
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private static AddressField osThreadField; |
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private static AddressField stackBaseField; |
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private static CIntegerField stackSizeField; |
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private static CIntegerField terminatedField; |
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private static JavaThreadPDAccess access; |
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// JavaThreadStates read from underlying process |
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private static int UNINITIALIZED; |
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private static int NEW; |
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private static int NEW_TRANS; |
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private static int IN_NATIVE; |
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private static int IN_NATIVE_TRANS; |
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private static int IN_VM; |
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private static int IN_VM_TRANS; |
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private static int IN_JAVA; |
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private static int IN_JAVA_TRANS; |
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private static int BLOCKED; |
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private static int BLOCKED_TRANS; |
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private static int NOT_TERMINATED; |
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private static int EXITING; |
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private static final String ADDRESS_FORMAT = VM.getVM().isLP64() ? "0x%016x" : "0x%08x"; |
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static { |
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VM.registerVMInitializedObserver(new Observer() { |
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public void update(Observable o, Object data) { |
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initialize(VM.getVM().getTypeDataBase()); |
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} |
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}); |
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} |
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private static synchronized void initialize(TypeDataBase db) { |
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Type type = db.lookupType("JavaThread"); |
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Type anchorType = db.lookupType("JavaFrameAnchor"); |
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nextField = type.getAddressField("_next"); |
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threadObjField = type.getOopField("_threadObj"); |
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anchorField = type.getAddressField("_anchor"); |
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lastJavaSPField = anchorType.getAddressField("_last_Java_sp"); |
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lastJavaPCField = anchorType.getAddressField("_last_Java_pc"); |
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threadStateField = type.getCIntegerField("_thread_state"); |
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osThreadField = type.getAddressField("_osthread"); |
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stackBaseField = type.getAddressField("_stack_base"); |
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stackSizeField = type.getCIntegerField("_stack_size"); |
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terminatedField = type.getCIntegerField("_terminated"); |
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UNINITIALIZED = db.lookupIntConstant("_thread_uninitialized").intValue(); |
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NEW = db.lookupIntConstant("_thread_new").intValue(); |
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NEW_TRANS = db.lookupIntConstant("_thread_new_trans").intValue(); |
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IN_NATIVE = db.lookupIntConstant("_thread_in_native").intValue(); |
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IN_NATIVE_TRANS = db.lookupIntConstant("_thread_in_native_trans").intValue(); |
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IN_VM = db.lookupIntConstant("_thread_in_vm").intValue(); |
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IN_VM_TRANS = db.lookupIntConstant("_thread_in_vm_trans").intValue(); |
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IN_JAVA = db.lookupIntConstant("_thread_in_Java").intValue(); |
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IN_JAVA_TRANS = db.lookupIntConstant("_thread_in_Java_trans").intValue(); |
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BLOCKED = db.lookupIntConstant("_thread_blocked").intValue(); |
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BLOCKED_TRANS = db.lookupIntConstant("_thread_blocked_trans").intValue(); |
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NOT_TERMINATED = db.lookupIntConstant("JavaThread::_not_terminated").intValue(); |
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EXITING = db.lookupIntConstant("JavaThread::_thread_exiting").intValue(); |
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} |
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public JavaThread(Address addr) { |
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super(addr); |
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} |
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void setThreadPDAccess(JavaThreadPDAccess access) { |
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this.access = access; |
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} |
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public JavaThread next() { |
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Address threadAddr = nextField.getValue(addr); |
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if (threadAddr == null) { |
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return null; |
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} |
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return VM.getVM().getThreads().createJavaThreadWrapper(threadAddr); |
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} |
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/** NOTE: for convenience, this differs in definition from the underlying VM. |
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Only "pure" JavaThreads return true; CompilerThreads, the CodeCacheSweeperThread, |
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JVMDIDebuggerThreads return false. |
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FIXME: |
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consider encapsulating platform-specific functionality in an |
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object instead of using inheritance (which is the primary reason |
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we can't traverse CompilerThreads, etc; didn't want to have, for |
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example, "SolarisSPARCCompilerThread".) */ |
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public boolean isJavaThread() { return true; } |
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public boolean isExiting () { |
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return (getTerminated() == EXITING) || isTerminated(); |
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} |
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public boolean isTerminated() { |
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return (getTerminated() != NOT_TERMINATED) && (getTerminated() != EXITING); |
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} |
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public static AddressField getAnchorField() { return anchorField; } |
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/** Get the last Java stack pointer */ |
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public Address getLastJavaSP() { |
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Address sp = lastJavaSPField.getValue(addr.addOffsetTo(anchorField.getOffset())); |
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return sp; |
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} |
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public Address getLastJavaPC() { |
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Address pc = lastJavaPCField.getValue(addr.addOffsetTo(anchorField.getOffset())); |
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return pc; |
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} |
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/** Abstract accessor to last Java frame pointer, implemented by |
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OS/CPU-specific JavaThread implementation. May return null if |
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there is no frame pointer or if it is not necessary on this |
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platform. */ |
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public Address getLastJavaFP(){ |
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return access.getLastJavaFP(addr); |
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} |
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/** Abstract accessor to last Java pc, implemented by |
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OS/CPU-specific JavaThread implementation. May return null if |
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there is no frame pointer or if it is not necessary on this |
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platform. */ |
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/* |
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public Address getLastJavaPC(){ |
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return access.getLastJavaPC(addr); |
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} |
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*/ |
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// FIXME: not yet implementable |
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// public abstract void setLastJavaFP(Address fp); |
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/** A stack pointer older than any java frame stack pointer. Only |
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needed on some platforms; for example, see |
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thread_solaris_sparc.hpp. */ |
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public Address getBaseOfStackPointer(){ |
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return access.getBaseOfStackPointer(addr); |
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} |
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// FIXME: not yet implementable |
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// public abstract void setBaseOfStackPointer(Address fp); |
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/** Tells whether the last Java frame is set */ |
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public boolean hasLastJavaFrame() { |
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return (getLastJavaSP() != null); |
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} |
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/** Accessing frames */ |
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public Frame getLastFrame() { |
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// FIXME: would need to implement runtime routine |
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// "cacheStatePD(boolean)" for reflective system to be able to |
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// flush register windows on SPARC |
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return cookLastFrame(getLastFramePD()); |
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} |
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/** Internal routine implemented by platform-dependent subclasses */ |
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protected Frame getLastFramePD(){ |
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return access.getLastFramePD(this, addr); |
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} |
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/** Accessing frames. Returns the last Java VFrame or null if none |
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was present. (NOTE that this is mostly unusable in a debugging |
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system; see getLastJavaVFrameDbg, below, which provides very |
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different functionality.) */ |
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public JavaVFrame getLastJavaVFrame(RegisterMap regMap) { |
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if (Assert.ASSERTS_ENABLED) { |
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Assert.that(regMap != null, "a map must be given"); |
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} |
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Frame f = getLastFrame(); |
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if (f == null) { |
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return null; |
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} |
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for (VFrame vf = VFrame.newVFrame(f, regMap, this); vf != null; vf = vf.sender()) { |
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if (vf.isJavaFrame()) { |
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return (JavaVFrame) vf; |
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} |
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} |
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return null; |
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} |
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/** This should only be used by a debugger. Uses the current frame |
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guess to attempt to get the topmost JavaVFrame. |
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(getLastJavaVFrame, as a port of the VM's routine, assumes the |
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VM is at a safepoint.) */ |
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public JavaVFrame getLastJavaVFrameDbg() { |
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RegisterMap regMap = newRegisterMap(true); |
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sun.jvm.hotspot.runtime.Frame f = getCurrentFrameGuess(); |
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if (f == null) return null; |
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boolean imprecise = true; |
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if (f.isInterpretedFrame() && !f.isInterpretedFrameValid()) { |
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if (DEBUG) { |
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System.out.println("Correcting for invalid interpreter frame"); |
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} |
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f = f.sender(regMap); |
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imprecise = false; |
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} |
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VFrame vf = VFrame.newVFrame(f, regMap, this, true, imprecise); |
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if (vf == null) { |
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if (DEBUG) { |
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System.out.println(" (Unable to create vframe for topmost frame guess)"); |
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} |
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return null; |
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} |
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return vf.isJavaFrame() ? (JavaVFrame)vf : vf.javaSender(); |
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} |
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/** In this system, a JavaThread is the top-level factory for a |
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RegisterMap, since the JavaThread implementation is already |
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platform-specific and RegisterMap is also necessarily |
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platform-specific. The updateMap argument indicates whether the |
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register map needs to be updated, for example during stack |
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traversal -- see frame.hpp. */ |
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public RegisterMap newRegisterMap(boolean updateMap){ |
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return access.newRegisterMap(this, updateMap); |
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} |
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/** This is only designed to be used by the debugging system. |
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Returns a "best guess" of the topmost frame on the stack. This |
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guess should be as "raw" as possible. For example, if the |
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topmost frame is an interpreter frame (the return PC is in the |
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interpreter) but is not a valid frame (i.e., the BCI has not yet |
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been set up) this should still return the topmost frame and not |
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the sender. Validity checks are done at higher levels. */ |
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public Frame getCurrentFrameGuess(){ |
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return access.getCurrentFrameGuess(this, addr); |
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} |
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/** Also only intended for use by the debugging system. Provides the |
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same effect of OSThread::print(); that is, prints a value which |
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allows the user to intuitively understand which native OS thread |
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maps to this Java thread. Does not print a newline or leading or |
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trailing spaces. */ |
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public void printThreadIDOn(PrintStream tty) { |
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access.printThreadIDOn(addr,tty); |
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} |
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public void printThreadID() { |
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printThreadIDOn(System.out); |
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} |
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public ThreadProxy getThreadProxy() { |
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return access.getThreadProxy(addr); |
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} |
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// |
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// Safepoint support |
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// |
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public JavaThreadState getThreadState() { |
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int val = (int) threadStateField.getValue(addr); |
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if (val == UNINITIALIZED) { |
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return JavaThreadState.UNINITIALIZED; |
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} else if (val == NEW) { |
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return JavaThreadState.NEW; |
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} else if (val == NEW_TRANS) { |
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return JavaThreadState.NEW_TRANS; |
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} else if (val == IN_NATIVE) { |
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return JavaThreadState.IN_NATIVE; |
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} else if (val == IN_NATIVE_TRANS) { |
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return JavaThreadState.IN_NATIVE_TRANS; |
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} else if (val == IN_VM) { |
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return JavaThreadState.IN_VM; |
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} else if (val == IN_VM_TRANS) { |
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return JavaThreadState.IN_VM_TRANS; |
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} else if (val == IN_JAVA) { |
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return JavaThreadState.IN_JAVA; |
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} else if (val == IN_JAVA_TRANS) { |
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return JavaThreadState.IN_JAVA_TRANS; |
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} else if (val == BLOCKED) { |
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return JavaThreadState.BLOCKED; |
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} else if (val == BLOCKED_TRANS) { |
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return JavaThreadState.BLOCKED_TRANS; |
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} else { |
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throw new RuntimeException("Illegal thread state " + val); |
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} |
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} |
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// FIXME: not yet implementable |
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// public void setThreadState(JavaThreadState s); |
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// |
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// Miscellaneous operations |
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// |
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public OSThread getOSThread() { |
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return (OSThread) VMObjectFactory.newObject(OSThread.class, osThreadField.getValue(addr)); |
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} |
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public Address getStackBase() { |
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return stackBaseField.getValue(addr); |
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} |
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public long getStackBaseValue() { |
344 |
return VM.getVM().getAddressValue(getStackBase()); |
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} |
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public long getStackSize() { |
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6843580: JavaThread.getStackBase throws sun.jvm.hotspot.WrongTypeException invoked by jstack
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348 |
return stackSizeField.getValue(addr); |
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349 |
} |
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350 |
|
45371
5d0b68ea07c3
6760477: Update SA to include stack traces in the heap dump
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changeset
|
351 |
public int getTerminated() { |
5d0b68ea07c3
6760477: Update SA to include stack traces in the heap dump
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|
352 |
return (int) terminatedField.getValue(addr); |
5d0b68ea07c3
6760477: Update SA to include stack traces in the heap dump
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changeset
|
353 |
} |
5d0b68ea07c3
6760477: Update SA to include stack traces in the heap dump
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changeset
|
354 |
|
1 | 355 |
/** Gets the Java-side thread object for this JavaThread */ |
356 |
public Oop getThreadObj() { |
|
5528 | 357 |
Oop obj = null; |
358 |
try { |
|
359 |
obj = VM.getVM().getObjectHeap().newOop(threadObjField.getValue(addr)); |
|
360 |
} catch (Exception e) { |
|
361 |
e.printStackTrace(); |
|
362 |
} |
|
363 |
return obj; |
|
1 | 364 |
} |
365 |
||
366 |
/** Get the Java-side name of this thread */ |
|
367 |
public String getThreadName() { |
|
368 |
Oop threadObj = getThreadObj(); |
|
369 |
if (threadObj == null) { |
|
370 |
return "<null>"; |
|
371 |
} |
|
372 |
return OopUtilities.threadOopGetName(threadObj); |
|
373 |
} |
|
374 |
||
375 |
// |
|
376 |
// Oop traversal |
|
377 |
// |
|
378 |
||
379 |
public void oopsDo(AddressVisitor oopVisitor) { |
|
380 |
super.oopsDo(oopVisitor); |
|
381 |
||
382 |
// FIXME: add in the rest of the routine from the VM |
|
383 |
||
384 |
// Traverse the execution stack |
|
385 |
for(StackFrameStream fst = new StackFrameStream(this); !fst.isDone(); fst.next()) { |
|
386 |
fst.getCurrent().oopsDo(oopVisitor, fst.getRegisterMap()); |
|
387 |
} |
|
388 |
} |
|
389 |
||
390 |
public boolean isInStack(Address a) { |
|
391 |
if (Assert.ASSERTS_ENABLED) { |
|
392 |
Assert.that(VM.getVM().isDebugging(), "Not yet implemented for non-debugging system"); |
|
393 |
} |
|
394 |
Address sp = lastSPDbg(); |
|
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changeset
|
395 |
Address stackBase = getStackBase(); |
1 | 396 |
// Be robust |
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changeset
|
397 |
if (sp == null) return false; |
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changeset
|
398 |
return stackBase.greaterThanOrEqual(a) && sp.lessThanOrEqual(a); |
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changeset
|
399 |
} |
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changeset
|
400 |
|
39a58a50be35
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changeset
|
401 |
public boolean isLockOwned(Address a) { |
39a58a50be35
6699669: Hotspot server leaves synchronized block with monitor in bad state
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diff
changeset
|
402 |
Address stackBase = getStackBase(); |
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changeset
|
403 |
Address stackLimit = stackBase.addOffsetTo(-getStackSize()); |
39a58a50be35
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parents:
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diff
changeset
|
404 |
|
39a58a50be35
6699669: Hotspot server leaves synchronized block with monitor in bad state
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changeset
|
405 |
return stackBase.greaterThanOrEqual(a) && stackLimit.lessThanOrEqual(a); |
1 | 406 |
|
407 |
// FIXME: should traverse MonitorArray/MonitorChunks as in VM |
|
408 |
} |
|
409 |
||
410 |
public Oop getCurrentParkBlocker() { |
|
411 |
Oop threadObj = getThreadObj(); |
|
412 |
if (threadObj != null) { |
|
413 |
return OopUtilities.threadOopGetParkBlocker(threadObj); |
|
414 |
} |
|
415 |
return null; |
|
416 |
} |
|
417 |
||
418 |
public void printInfoOn(PrintStream tty) { |
|
419 |
||
420 |
tty.println("State: " + getThreadState().toString()); |
|
421 |
// Attempt to figure out the addresses covered by Java frames. |
|
422 |
// NOTE: we should make this a method and let the Stackwalk panel use the result too. |
|
423 |
// |
|
424 |
sun.jvm.hotspot.runtime.Frame tmpFrame = getCurrentFrameGuess(); |
|
425 |
if (tmpFrame != null ) { |
|
426 |
Address sp = tmpFrame.getSP(); |
|
427 |
Address maxSP = sp; |
|
428 |
Address minSP = sp; |
|
429 |
RegisterMap tmpMap = newRegisterMap(false); |
|
430 |
while ((tmpFrame != null) && (!tmpFrame.isFirstFrame())) { |
|
431 |
tmpFrame = tmpFrame.sender(tmpMap); |
|
432 |
if (tmpFrame != null) { |
|
433 |
sp = tmpFrame.getSP(); |
|
434 |
maxSP = AddressOps.max(maxSP, sp); |
|
435 |
minSP = AddressOps.min(minSP, sp); |
|
436 |
} |
|
437 |
} |
|
438 |
tty.println("Stack in use by Java: " + minSP + " .. " + maxSP); |
|
439 |
} else { |
|
440 |
tty.println("No Java frames present"); |
|
441 |
} |
|
34665
9fdcc78b5398
8140031: SA: Searching for a value in Threads does not work
poonam
parents:
27475
diff
changeset
|
442 |
tty.println("Base of Stack: " + getStackBase()); |
1 | 443 |
tty.println("Last_Java_SP: " + getLastJavaSP()); |
444 |
tty.println("Last_Java_FP: " + getLastJavaFP()); |
|
445 |
tty.println("Last_Java_PC: " + getLastJavaPC()); |
|
446 |
// More stuff like saved_execption_pc, safepoint_state, ... |
|
447 |
access.printInfoOn(addr, tty); |
|
448 |
||
449 |
} |
|
450 |
||
451 |
/////////////////////////////// |
|
452 |
// // |
|
453 |
// FIXME: add more accessors // |
|
454 |
// // |
|
455 |
/////////////////////////////// |
|
456 |
||
457 |
//-------------------------------------------------------------------------------- |
|
458 |
// Internals only below this point |
|
459 |
// |
|
460 |
||
461 |
private Frame cookLastFrame(Frame fr) { |
|
462 |
if (fr == null) { |
|
463 |
return null; |
|
464 |
} |
|
465 |
||
466 |
Address pc = fr.getPC(); |
|
467 |
||
468 |
if (Assert.ASSERTS_ENABLED) { |
|
469 |
if (pc == null) { |
|
470 |
Assert.that(VM.getVM().isDebugging(), "must have PC"); |
|
471 |
} |
|
472 |
} |
|
473 |
return fr; |
|
474 |
} |
|
475 |
||
476 |
private Address lastSPDbg() { |
|
477 |
return access.getLastSP(addr); |
|
478 |
} |
|
479 |
||
46636 | 480 |
|
481 |
public void printThreadInfoOn(PrintStream out){ |
|
482 |
Oop threadOop = this.getThreadObj(); |
|
483 |
||
484 |
out.print("\""); |
|
485 |
out.print(this.getThreadName()); |
|
486 |
out.print("\" #"); |
|
487 |
out.print(OopUtilities.threadOopGetTID(threadOop)); |
|
488 |
if(OopUtilities.threadOopGetDaemon(threadOop)){ |
|
489 |
out.print(" daemon"); |
|
490 |
} |
|
491 |
out.print(" prio="); |
|
492 |
out.print(OopUtilities.threadOopGetPriority(threadOop)); |
|
493 |
out.print(" tid="); |
|
494 |
out.print(this.getAddress()); |
|
495 |
out.print(" nid="); |
|
496 |
out.print(String.format("0x%x ",this.getOSThread().threadId())); |
|
497 |
out.print(getOSThread().getThreadState().getPrintVal()); |
|
498 |
out.print(" ["); |
|
499 |
if(this.getLastJavaSP() == null){ |
|
500 |
out.print(String.format(ADDRESS_FORMAT,0L)); |
|
501 |
} else { |
|
502 |
out.print(this.getLastJavaSP().andWithMask(~0xFFF)); |
|
503 |
} |
|
504 |
out.println("]"); |
|
505 |
out.print(" java.lang.Thread.State: "); |
|
506 |
out.println(OopUtilities.threadOopGetThreadStatusName(threadOop)); |
|
507 |
out.print(" JavaThread state: _thread_"); |
|
508 |
out.println(this.getThreadState().toString().toLowerCase()); |
|
509 |
} |
|
1 | 510 |
} |