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/debugger/proc/ProcDebuggerLocal.java
/*
* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*/
package sun.jvm.hotspot.debugger.proc;
import java.io.*;
import java.net.*;
import java.util.*;
import java.lang.reflect.*;
import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.debugger.cdbg.*;
import sun.jvm.hotspot.debugger.proc.amd64.*;
import sun.jvm.hotspot.debugger.proc.aarch64.*;
import sun.jvm.hotspot.debugger.proc.sparc.*;
import sun.jvm.hotspot.debugger.proc.ppc64.*;
import sun.jvm.hotspot.debugger.proc.x86.*;
import sun.jvm.hotspot.debugger.ppc64.*;
import sun.jvm.hotspot.debugger.amd64.*;
import sun.jvm.hotspot.debugger.aarch64.*;
import sun.jvm.hotspot.debugger.sparc.*;
import sun.jvm.hotspot.debugger.x86.*;
import sun.jvm.hotspot.utilities.*;
/** <P> An implementation of the JVMDebugger interface which sits on
* top of proc and relies on the SA's proc import module for
* communication with the debugger. </P>
*
* <P> <B>NOTE</B> that since we have the notion of fetching "Java
* primitive types" from the remote process (which might have
* different sizes than we expect) we have a bootstrapping
* problem. We need to know the sizes of these types before we can
* fetch them. The current implementation solves this problem by
* requiring that it be configured with these type sizes before they
* can be fetched. The readJ(Type) routines here will throw a
* RuntimeException if they are called before the debugger is
* configured with the Java primitive type sizes. </P>
*/
public class ProcDebuggerLocal extends DebuggerBase implements ProcDebugger {
protected static final int cacheSize = 16 * 1024 * 1024; // 16 MB
//------------------------------------------------------------------------
// Implementation of Debugger interface
//
/** <P> machDesc may be null if it couldn't be determined yet; i.e.,
* if we're on SPARC, we need to ask the remote process whether
* we're in 32- or 64-bit mode. </P>
*
* <P> useCache should be set to true if debugging is being done
* locally, and to false if the debugger is being created for the
* purpose of supporting remote debugging. </P> */
public ProcDebuggerLocal(MachineDescription machDesc, boolean useCache) {
this.machDesc = machDesc;
int cacheNumPages;
int cachePageSize;
final String cpu = PlatformInfo.getCPU();
if (cpu.equals("sparc")) {
threadFactory = new ProcSPARCThreadFactory(this);
pcRegIndex = SPARCThreadContext.R_PC;
fpRegIndex = SPARCThreadContext.R_I6;
} else if (cpu.equals("x86")) {
threadFactory = new ProcX86ThreadFactory(this);
pcRegIndex = X86ThreadContext.EIP;
fpRegIndex = X86ThreadContext.EBP;
unalignedAccessesOkay = true;
} else if (cpu.equals("amd64") || cpu.equals("x86_64")) {
threadFactory = new ProcAMD64ThreadFactory(this);
pcRegIndex = AMD64ThreadContext.RIP;
fpRegIndex = AMD64ThreadContext.RBP;
} else if (cpu.equals("aarch64")) {
threadFactory = new ProcAARCH64ThreadFactory(this);
pcRegIndex = AARCH64ThreadContext.PC;
fpRegIndex = AARCH64ThreadContext.FP;
} else if (cpu.equals("ppc64")) {
threadFactory = new ProcPPC64ThreadFactory(this);
pcRegIndex = PPC64ThreadContext.PC;
fpRegIndex = PPC64ThreadContext.SP;
} else {
try {
Class tfc = Class.forName("sun.jvm.hotspot.debugger.proc." +
cpu.toLowerCase() + ".Proc" + cpu.toUpperCase() +
"ThreadFactory");
Constructor[] ctfc = tfc.getConstructors();
threadFactory = (ProcThreadFactory)ctfc[0].newInstance(this);
} catch (Exception e) {
throw new RuntimeException("Thread access for CPU architecture " + PlatformInfo.getCPU() + " not yet supported");
// Note: pcRegIndex and fpRegIndex do not appear to be referenced
}
}
if (useCache) {
// Cache portion of the remote process's address space.
// For now, this cache works best if it covers the entire
// heap of the remote process. FIXME: at least should make this
// tunable from the outside, i.e., via the UI. This is a 16 MB
// cache divided on SPARC into 2048 8K pages and on x86 into
// 4096 4K pages; the page size must be adjusted to be the OS's
// page size.
cachePageSize = getPageSize();
cacheNumPages = parseCacheNumPagesProperty(cacheSize / cachePageSize);
initCache(cachePageSize, cacheNumPages);
}
resetNativePointers();
clearCacheFields();
}
/** FIXME: implement this with a Runtime.exec() of ps followed by
* parsing of its output */
public boolean hasProcessList() throws DebuggerException {
return false;
}
public List getProcessList() throws DebuggerException {
throw new DebuggerException("Not yet supported");
}
/** From the Debugger interface via JVMDebugger */
public synchronized void attach(int processID) throws DebuggerException {
checkAttached();
isCore = false;
attach0(new Integer(processID).toString());
attached = true;
suspended = true;
}
/** From the Debugger interface via JVMDebugger */
public synchronized void attach
(String executableName, String coreFileName) throws DebuggerException {
checkAttached();
isCore = true;
topFrameCache = new HashMap();
attach0(executableName, coreFileName);
attached = true;
suspended = true;
}
/** From the Debugger interface via JVMDebugger */
public synchronized boolean detach() {
if (! attached) {
return false;
}
try {
if (p_ps_prochandle == 0L) {
return false;
}
detach0();
clearCache();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
resetNativePointers();
clearCacheFields();
suspended = false;
attached = false;
}
}
public synchronized void suspend() throws DebuggerException {
requireAttach();
if (suspended) {
throw new DebuggerException("Process already suspended");
}
suspend0();
suspended = true;
enableCache();
reresolveLoadObjects();
}
public synchronized void resume() throws DebuggerException {
requireAttach();
if (!suspended) {
throw new DebuggerException("Process not suspended");
}
resume0();
disableCache();
suspended = false;
}
public synchronized boolean isSuspended() throws DebuggerException {
requireAttach();
return suspended;
}
/** From the Debugger interface via JVMDebugger */
public Address parseAddress(String addressString) throws NumberFormatException {
long addr = utils.scanAddress(addressString);
if (addr == 0) {
return null;
}
return new ProcAddress(this, addr);
}
/** From the Debugger interface via JVMDebugger */
public String getOS() {
return PlatformInfo.getOS();
}
/** From the Debugger interface via JVMDebugger */
public String getCPU() {
return PlatformInfo.getCPU();
}
public boolean hasConsole() throws DebuggerException {
return false;
}
public String consoleExecuteCommand(String cmd) throws DebuggerException {
throw new DebuggerException("Can't execute console commands");
}
public String getConsolePrompt() throws DebuggerException {
return "";
}
public CDebugger getCDebugger() throws DebuggerException {
if (cdbg == null) {
cdbg = new ProcCDebugger(this);
}
return cdbg;
}
/** From the SymbolLookup interface via Debugger and JVMDebugger */
public synchronized Address lookup(String objectName, String symbol) {
requireAttach();
long addr = lookupByName0(objectName, symbol);
if (addr == 0) {
return null;
}
return new ProcAddress(this, addr);
}
/** From the SymbolLookup interface via Debugger and JVMDebugger */
public synchronized OopHandle lookupOop(String objectName, String symbol) {
Address addr = lookup(objectName, symbol);
if (addr == null) {
return null;
}
return addr.addOffsetToAsOopHandle(0);
}
/** From the ProcDebugger interface */
public MachineDescription getMachineDescription() {
return machDesc;
}
/** Internal routine supporting lazy setting of MachineDescription,
* since on SPARC we will need to query the remote process to ask
* it what its data model is (32- or 64-bit).
*/
public void setMachineDescription(MachineDescription machDesc) {
this.machDesc = machDesc;
setBigEndian(machDesc.isBigEndian());
utils = new DebuggerUtilities(machDesc.getAddressSize(), machDesc.isBigEndian());
}
public synchronized int getRemoteProcessAddressSize()
throws DebuggerException {
requireAttach();
return getRemoteProcessAddressSize0();
}
//--------------------------------------------------------------------------------
// Implementation of ThreadAccess interface
//
/** From the ThreadAccess interface via Debugger and JVMDebugger */
public ThreadProxy getThreadForIdentifierAddress(Address addr) {
return threadFactory.createThreadWrapper(addr);
}
public ThreadProxy getThreadForThreadId(long id) {
return threadFactory.createThreadWrapper(id);
}
//----------------------------------------------------------------------
// Overridden from DebuggerBase because we need to relax alignment
// constraints on x86
public long readJLong(long address)
throws UnmappedAddressException, UnalignedAddressException {
checkJavaConfigured();
// FIXME: allow this to be configurable. Undesirable to add a
// dependency on the runtime package here, though, since this
// package should be strictly underneath it.
if (unalignedAccessesOkay) {
utils.checkAlignment(address, jintSize);
} else {
utils.checkAlignment(address, jlongSize);
}
byte[] data = readBytes(address, jlongSize);
return utils.dataToJLong(data, jlongSize);
}
//--------------------------------------------------------------------------------
// Internal routines (for implementation of ProcAddress).
// These must not be called until the MachineDescription has been set up.
//
/** From the ProcDebugger interface */
public String addressValueToString(long address) {
return utils.addressValueToString(address);
}
/** Need to override this to relax alignment checks on Solaris/x86. */
public long readCInteger(long address, long numBytes, boolean isUnsigned)
throws UnmappedAddressException, UnalignedAddressException {
checkConfigured();
if (!unalignedAccessesOkay) {
utils.checkAlignment(address, numBytes);
} else {
// Only slightly relaxed semantics -- this is a hack, but is
// necessary on Solaris/x86 where it seems the compiler is
// putting some global 64-bit data on 32-bit boundaries
if (numBytes == 8) {
utils.checkAlignment(address, 4);
} else {
utils.checkAlignment(address, numBytes);
}
}
byte[] data = readBytes(address, numBytes);
return utils.dataToCInteger(data, isUnsigned);
}
/** From the ProcDebugger interface */
public ProcAddress readAddress(long address)
throws UnmappedAddressException, UnalignedAddressException {
long value = readAddressValue(address);
return (value == 0 ? null : new ProcAddress(this, value));
}
public ProcAddress readCompOopAddress(long address)
throws UnmappedAddressException, UnalignedAddressException {
long value = readCompOopAddressValue(address);
return (value == 0 ? null : new ProcAddress(this, value));
}
public ProcAddress readCompKlassAddress(long address)
throws UnmappedAddressException, UnalignedAddressException {
long value = readCompKlassAddressValue(address);
return (value == 0 ? null : new ProcAddress(this, value));
}
/** From the ProcDebugger interface */
public ProcOopHandle readOopHandle(long address)
throws UnmappedAddressException, UnalignedAddressException, NotInHeapException {
long value = readAddressValue(address);
return (value == 0 ? null : new ProcOopHandle(this, value));
}
public ProcOopHandle readCompOopHandle(long address) {
long value = readCompOopAddressValue(address);
return (value == 0 ? null : new ProcOopHandle(this, value));
}
public void writeBytesToProcess(long address, long numBytes, byte[] data)
throws UnmappedAddressException, DebuggerException {
if (isCore) {
throw new DebuggerException("Attached to a core file!");
}
writeBytesToProcess0(address, numBytes, data);
}
public synchronized ReadResult readBytesFromProcess(long address, long numBytes)
throws DebuggerException {
requireAttach();
byte[] res = readBytesFromProcess0(address, numBytes);
if(res != null)
return new ReadResult(res);
else
return new ReadResult(address);
}
protected int getPageSize() {
int pagesize = getPageSize0();
if (pagesize == -1) {
// return the hard coded default value.
if (PlatformInfo.getCPU().equals("sparc") ||
PlatformInfo.getCPU().equals("amd64") )
pagesize = 8196;
else
pagesize = 4096;
}
return pagesize;
}
//--------------------------------------------------------------------------------
// Thread context access. Can not be package private, but should
// only be accessed by the architecture-specific subpackages.
/** From the ProcDebugger interface. May have to redefine this later. */
public synchronized long[] getThreadIntegerRegisterSet(int tid) {
requireAttach();
return getThreadIntegerRegisterSet0(tid);
}
//--------------------------------------------------------------------------------
// Address access. Can not be package private, but should only be
// accessed by the architecture-specific subpackages.
/** From the ProcDebugger interface */
public long getAddressValue(Address addr) {
if (addr == null) return 0;
return ((ProcAddress) addr).getValue();
}
/** From the ProcDebugger interface */
public Address newAddress(long value) {
if (value == 0) return null;
return new ProcAddress(this, value);
}
/** From the ProcDebugger interface */
public synchronized List getThreadList() throws DebuggerException {
requireAttach();
List res = null;
if (isCore && (threadListCache != null)) {
res = threadListCache;
} else {
res = new ArrayList();
fillThreadList0(res);
if (isCore) {
threadListCache = res;
}
}
return res;
}
/** From the ProcDebugger interface */
public synchronized List getLoadObjectList() throws DebuggerException {
requireAttach();
if (!suspended) {
throw new DebuggerException("Process not suspended");
}
if (loadObjectCache == null) {
updateLoadObjectCache();
}
return loadObjectCache;
}
/** From the ProcDebugger interface */
public synchronized CFrame topFrameForThread(ThreadProxy thread)
throws DebuggerException {
requireAttach();
CFrame res = null;
if (isCore && ((res = (CFrame) topFrameCache.get(thread)) != null)) {
return res;
} else {
ThreadContext context = thread.getContext();
int numRegs = context.getNumRegisters();
long[] regs = new long[numRegs];
for (int i = 0; i < numRegs; i++) {
regs[i] = context.getRegister(i);
}
res = fillCFrameList0(regs);
if (isCore) {
topFrameCache.put(thread, res);
}
return res;
}
}
/** From the ProcDebugger interface */
public synchronized ClosestSymbol lookup(long address) {
requireAttach();
return lookupByAddress0(address);
}
/** From the ProcDebugger interface */
public String demangle(String name) {
return demangle0(name);
}
//------------- Internals only below this point --------------------
//
//
private void updateLoadObjectCache() {
List res = new ArrayList();
nameToDsoMap = new HashMap();
fillLoadObjectList0(res);
loadObjectCache = sortLoadObjects(res);
}
// sort load objects by base address
private static List sortLoadObjects(List in) {
// sort the list by base address
Object[] arr = in.toArray();
Arrays.sort(arr, loadObjectComparator);
return Arrays.asList(arr);
}
private long lookupByName(String objectName, String symbolName)
throws DebuggerException {
// NOTE: this assumes that process is suspended (which is probably
// necessary assumption given that DSOs can be loaded/unloaded as
// process runs). Should update documentation.
if (nameToDsoMap == null) {
getLoadObjectList();
}
SharedObject dso = (SharedObject) nameToDsoMap.get(objectName);
// The DSO can be null because we use this to search through known
// DSOs in HotSpotTypeDataBase (for example)
if (dso != null) {
ProcAddress addr = (ProcAddress) dso.lookupSymbol(symbolName);
if (addr != null) {
return addr.getValue();
}
}
return 0;
}
private SharedObject findDSOByName(String fullPathName) {
if (loadObjectCache == null)
return null;
for (Iterator iter = loadObjectCache.iterator(); iter.hasNext(); ) {
SharedObject dso = (SharedObject) iter.next();
if (dso.getName().equals(fullPathName)) {
return dso;
}
}
return null;
}
private void reresolveLoadObjects() throws DebuggerException {
if (loadObjectCache == null) {
return;
}
updateLoadObjectCache();
}
private void checkAttached() {
if (attached) {
if (isCore) {
throw new DebuggerException("already attached to a core file!");
} else {
throw new DebuggerException("already attached to a process!");
}
}
}
private void requireAttach() {
if (! attached) {
throw new RuntimeException("not attached to a process or core file!");
}
}
private void clearCacheFields() {
loadObjectCache = null;
nameToDsoMap = null;
threadListCache = null;
topFrameCache = null;
}
private void resetNativePointers() {
p_ps_prochandle = 0L;
// reset thread_db pointers
libthread_db_handle = 0L;
p_td_thragent_t = 0L;
p_td_init = 0L;
p_td_ta_new = 0L;
p_td_ta_delete = 0L;
p_td_ta_thr_iter = 0L;
p_td_thr_get_info = 0L;
p_td_ta_map_id2thr = 0L;
p_td_thr_getgregs = 0L;
// part of class sharing workaround
classes_jsa_fd = -1;
p_file_map_header = 0L;
}
// native methods and native helpers
// attach, detach
private native void attach0(String pid) throws DebuggerException;
private native void attach0(String executableFile, String coreFileName) throws DebuggerException;
private native void detach0() throws DebuggerException;
// address size, page size
private native int getRemoteProcessAddressSize0() throws DebuggerException;
private native int getPageSize0() throws DebuggerException;
// threads, stacks
private native long[] getThreadIntegerRegisterSet0(long tid) throws DebuggerException;
private native void fillThreadList0(List l) throws DebuggerException;
// fills stack frame list given reg set of the top frame and top frame
private native ProcCFrame fillCFrameList0(long[] regs) throws DebuggerException;
// helper called by fillCFrameList0
private ProcCFrame createSenderFrame(ProcCFrame f, long pc, long fp) {
ProcCFrame sender = new ProcCFrame(this, newAddress(pc), newAddress(fp));
if (f != null) {
f.setSender(sender);
}
return sender;
}
// shared objects
private native void fillLoadObjectList0(List l) throws DebuggerException;
// helper called by fillLoadObjectList0
private LoadObject createLoadObject(String fileName, long textsize, long base) {
File f = new File(fileName);
Address baseAddr = newAddress(base);
SharedObject res = findDSOByName(fileName);
if (res != null) {
// already in cache. just change the base, if needed
Address oldBase = res.getBase();
if (! baseAddr.equals(oldBase)) {
res.setBase(baseAddr);
}
} else {
// new shared object.
res = new SharedObject(this, fileName, f.length(), baseAddr);
}
nameToDsoMap.put(f.getName(), res);
return res;
}
// symbol-to-pc
private native long lookupByName0(String objectName, String symbolName) throws DebuggerException;
private native ClosestSymbol lookupByAddress0(long address) throws DebuggerException;
// helper called by lookupByAddress0
private ClosestSymbol createClosestSymbol(String name, long offset) {
return new ClosestSymbol(name, offset);
}
// process read/write
private native byte[] readBytesFromProcess0(long address, long numBytes) throws DebuggerException;
private native void writeBytesToProcess0(long address, long numBytes, byte[] data) throws DebuggerException;
// process control
private native void suspend0() throws DebuggerException;
private native void resume0() throws DebuggerException;
// demangle a C++ name
private native String demangle0(String name);
// init JNI ids to fields, methods
private native static void initIDs() throws DebuggerException;
private static LoadObjectComparator loadObjectComparator;
static {
System.loadLibrary("saproc");
initIDs();
loadObjectComparator = new LoadObjectComparator();
}
private boolean unalignedAccessesOkay;
private ProcThreadFactory threadFactory;
// indices of PC and FP registers in gregset
private int pcRegIndex;
private int fpRegIndex;
// Symbol lookup support
// This is a map of library names to DSOs
private Map nameToDsoMap; // Map<String, SharedObject>
// C/C++ debugging support
private List/*<LoadObject>*/ loadObjects;
private CDebugger cdbg;
// ProcessControl support
private boolean suspended;
// libproc handle
private long p_ps_prochandle;
// libthread.so's dlopen handle, thread agent
// and function pointers
private long libthread_db_handle;
private long p_td_thragent_t;
private long p_td_init;
private long p_td_ta_new;
private long p_td_ta_delete;
private long p_td_ta_thr_iter;
private long p_td_thr_get_info;
private long p_td_ta_map_id2thr;
private long p_td_thr_getgregs;
// part of class sharing workaround
private int classes_jsa_fd;
private long p_file_map_header;
private boolean attached = false;
private boolean isCore;
// for core files, we cache load object list, thread list, top frames etc.
// for processes we cache load object list and sync. it during suspend.
private List threadListCache;
private List loadObjectCache;
private Map topFrameCache; // Map<ThreadProxy, CFrame>
}
⏎ sun/jvm/hotspot/debugger/proc/ProcDebuggerLocal.java
Or download all of them as a single archive file:
File name: jdk.hotspot.agent-11.0.1-src.zip File size: 1243786 bytes Release date: 2018-11-04 Download
⇒ JDK 11 jdk.httpserver.jmod - HTTP Server Module
2020-02-29, 131336👍, 0💬
Related Topics: