JDK 11 jdk.hotspot.agent.jmod - Hotspot Agent Module

JDK 11 jdk.hotspot.agent.jmod is the JMOD file for JDK 11 Hotspot Agent module.

JDK 11 Hotspot Agent module compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\jdk.hotspot.agent.jmod.

JDK 11 Hotspot Agent module compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.

JDK 11 Hotspot Agent module source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\jdk.hotspot.agent.

You can click and view the content of each source code file in the list below.

✍: FYIcenter

sun/jvm/hotspot/runtime/solaris_amd64/SolarisAMD64JavaThreadPDAccess.java

/*
 * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package sun.jvm.hotspot.runtime.solaris_amd64;

import java.io.*;
import java.util.*;
import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.debugger.amd64.*;
import sun.jvm.hotspot.runtime.*;
import sun.jvm.hotspot.runtime.amd64.*;
import sun.jvm.hotspot.runtime.x86.*;
import sun.jvm.hotspot.types.*;
import sun.jvm.hotspot.utilities.*;

public class SolarisAMD64JavaThreadPDAccess implements JavaThreadPDAccess {
    private static AddressField lastJavaFPField;
    private static AddressField osThreadField;
    private static AddressField baseOfStackPointerField;

    // Field from OSThread
    private static CIntegerField osThreadThreadIDField;

    // This is currently unneeded but is being kept in case we change
    // the currentFrameGuess algorithm
    private static final long GUESS_SCAN_RANGE = 128 * 1024;


    static {
        VM.registerVMInitializedObserver(new Observer() {
            public void update(Observable o, Object data) {
                initialize(VM.getVM().getTypeDataBase());
            }
        });
    }

    private static synchronized void initialize(TypeDataBase db) {
        Type type = db.lookupType("JavaThread");
        Type anchorType = db.lookupType("JavaFrameAnchor");

        lastJavaFPField    = anchorType.getAddressField("_last_Java_fp");
        osThreadField      = type.getAddressField("_osthread");

        type = db.lookupType("OSThread");
        osThreadThreadIDField   = type.getCIntegerField("_thread_id");
    }

    public    Address getLastJavaFP(Address addr) {
        return lastJavaFPField.getValue(addr.addOffsetTo(sun.jvm.hotspot.runtime.JavaThread.getAnchorField().getOffset()));
    }

    public    Address getLastJavaPC(Address addr) {
        return null;
    }

    public Address getBaseOfStackPointer(Address addr) {
        return null;
    }

    public Frame getLastFramePD(JavaThread thread, Address addr) {
        Address fp = thread.getLastJavaFP();
        if (fp == null) {
            return null; // no information
        }
        Address pc =  thread.getLastJavaPC();
        if ( pc != null ) {
            return new X86Frame(thread.getLastJavaSP(), fp, pc);
        } else {
            return new X86Frame(thread.getLastJavaSP(), fp);
        }
    }

    public RegisterMap newRegisterMap(JavaThread thread, boolean updateMap) {
        return new X86RegisterMap(thread, updateMap);
    }

    public Frame getCurrentFrameGuess(JavaThread thread, Address addr) {
        ThreadProxy t = getThreadProxy(addr);
        AMD64ThreadContext context = (AMD64ThreadContext) t.getContext();
        AMD64CurrentFrameGuess guesser = new AMD64CurrentFrameGuess(context, thread);
        if (!guesser.run(GUESS_SCAN_RANGE)) {
            return null;
        }
        if (guesser.getPC() == null) {
            return new X86Frame(guesser.getSP(), guesser.getFP());
        } else {
            return new X86Frame(guesser.getSP(), guesser.getFP(), guesser.getPC());
        }
    }


    public void printThreadIDOn(Address addr, PrintStream tty) {
        tty.print(getThreadProxy(addr));
    }


    public void printInfoOn(Address threadAddr, PrintStream tty) {
    }

    public Address getLastSP(Address addr) {
        ThreadProxy t = getThreadProxy(addr);
        AMD64ThreadContext context = (AMD64ThreadContext) t.getContext();
        return context.getRegisterAsAddress(AMD64ThreadContext.RSP);
    }

    public ThreadProxy getThreadProxy(Address addr) {
        // Fetch the OSThread (for now and for simplicity, not making a
        // separate "OSThread" class in this package)
        Address osThreadAddr = osThreadField.getValue(addr);
        // Get the address of the thread ID from the OSThread
        Address tidAddr = osThreadAddr.addOffsetTo(osThreadThreadIDField.getOffset());

        JVMDebugger debugger = VM.getVM().getDebugger();
        return debugger.getThreadForIdentifierAddress(tidAddr);
    }

}

sun/jvm/hotspot/runtime/solaris_amd64/SolarisAMD64JavaThreadPDAccess.java

 

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