author | ysuenaga |
Fri, 27 Jul 2018 00:54:39 +0900 | |
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parent 48166 | 2659c4fe8ea7 |
child 53379 | e47074d2d8cc |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2002, 2018, 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.debugger.linux; |
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import java.io.File; |
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import java.io.IOException; |
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import java.io.UncheckedIOException; |
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import java.nio.file.Files; |
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import java.nio.file.Path; |
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import java.nio.file.Paths; |
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import java.util.ArrayList; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.NoSuchElementException; |
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import java.util.stream.Collectors; |
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import sun.jvm.hotspot.debugger.Address; |
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import sun.jvm.hotspot.debugger.DebuggerBase; |
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import sun.jvm.hotspot.debugger.DebuggerException; |
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import sun.jvm.hotspot.debugger.DebuggerUtilities; |
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import sun.jvm.hotspot.debugger.MachineDescription; |
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import sun.jvm.hotspot.debugger.NotInHeapException; |
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import sun.jvm.hotspot.debugger.OopHandle; |
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import sun.jvm.hotspot.debugger.ReadResult; |
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import sun.jvm.hotspot.debugger.ThreadProxy; |
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import sun.jvm.hotspot.debugger.UnalignedAddressException; |
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import sun.jvm.hotspot.debugger.UnmappedAddressException; |
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import sun.jvm.hotspot.debugger.cdbg.CDebugger; |
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import sun.jvm.hotspot.debugger.cdbg.ClosestSymbol; |
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import sun.jvm.hotspot.debugger.cdbg.LoadObject; |
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import sun.jvm.hotspot.utilities.PlatformInfo; |
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/** <P> An implementation of the JVMDebugger interface. The basic debug |
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facilities are implemented through ptrace interface in the JNI code |
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(libsaproc.so). Library maps and symbol table management are done in |
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JNI. </P> |
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<P> <B>NOTE</B> that since we have the notion of fetching "Java |
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primitive types" from the remote process (which might have |
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different sizes than we expect) we have a bootstrapping |
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problem. We need to know the sizes of these types before we can |
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fetch them. The current implementation solves this problem by |
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requiring that it be configured with these type sizes before they |
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can be fetched. The readJ(Type) routines here will throw a |
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RuntimeException if they are called before the debugger is |
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configured with the Java primitive type sizes. </P> */ |
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public class LinuxDebuggerLocal extends DebuggerBase implements LinuxDebugger { |
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private boolean useGCC32ABI; |
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private boolean attached; |
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private long p_ps_prochandle; // native debugger handle |
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private boolean isCore; |
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// CDebugger support |
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private LinuxCDebugger cdbg; |
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// threadList and loadObjectList are filled by attach0 method |
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private List threadList; |
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private List loadObjectList; |
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// PID namespace support |
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// It maps the LWPID in the host to the LWPID in the container. |
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private Map<Integer, Integer> nspidMap; |
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// called by native method lookupByAddress0 |
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private ClosestSymbol createClosestSymbol(String name, long offset) { |
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return new ClosestSymbol(name, offset); |
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} |
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// called by native method attach0 |
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private LoadObject createLoadObject(String fileName, long textsize, |
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long base) { |
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File f = new File(fileName); |
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Address baseAddr = newAddress(base); |
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return new SharedObject(this, fileName, f.length(), baseAddr); |
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} |
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// native methods |
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private native static void init0() |
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throws DebuggerException; |
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private native void setSAAltRoot0(String altroot); |
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private native void attach0(int pid, boolean isInContainer) |
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throws DebuggerException; |
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private native void attach0(String execName, String coreName) |
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throws DebuggerException; |
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private native void detach0() |
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throws DebuggerException; |
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private native long lookupByName0(String objectName, String symbol) |
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throws DebuggerException; |
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private native ClosestSymbol lookupByAddress0(long address) |
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throws DebuggerException; |
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private native long[] getThreadIntegerRegisterSet0(int lwp_id) |
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throws DebuggerException; |
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private native byte[] readBytesFromProcess0(long address, long numBytes) |
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throws DebuggerException; |
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public native static int getAddressSize() ; |
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// Note on Linux threads are really processes. When target process is |
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// attached by a serviceability agent thread, only that thread can do |
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// ptrace operations on the target. This is because from kernel's point |
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// view, other threads are just separate processes and they are not |
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// attached to the target. When they attempt to make ptrace calls, |
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// an ESRCH error will be returned as kernel believes target is not |
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// being traced by the caller. |
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// To work around the problem, we use a worker thread here to handle |
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// all JNI functions that are making ptrace calls. |
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interface WorkerThreadTask { |
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public void doit(LinuxDebuggerLocal debugger) throws DebuggerException; |
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} |
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class LinuxDebuggerLocalWorkerThread extends Thread { |
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LinuxDebuggerLocal debugger; |
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WorkerThreadTask task; |
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DebuggerException lastException; |
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public LinuxDebuggerLocalWorkerThread(LinuxDebuggerLocal debugger) { |
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this.debugger = debugger; |
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setDaemon(true); |
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} |
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public void run() { |
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synchronized (workerThread) { |
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for (;;) { |
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if (task != null) { |
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lastException = null; |
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try { |
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task.doit(debugger); |
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} catch (DebuggerException exp) { |
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lastException = exp; |
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} |
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task = null; |
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workerThread.notifyAll(); |
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} |
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try { |
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workerThread.wait(); |
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} catch (InterruptedException x) {} |
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} |
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} |
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} |
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public WorkerThreadTask execute(WorkerThreadTask task) throws DebuggerException { |
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synchronized (workerThread) { |
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this.task = task; |
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workerThread.notifyAll(); |
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while (this.task != null) { |
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try { |
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workerThread.wait(); |
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} catch (InterruptedException x) {} |
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} |
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if (lastException != null) { |
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throw new DebuggerException(lastException); |
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} else { |
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return task; |
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} |
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} |
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} |
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} |
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private LinuxDebuggerLocalWorkerThread workerThread = null; |
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//---------------------------------------------------------------------- |
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// Implementation of Debugger interface |
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// |
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/** <P> machDesc may not be null. </P> |
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<P> useCache should be set to true if debugging is being done |
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locally, and to false if the debugger is being created for the |
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purpose of supporting remote debugging. </P> */ |
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public LinuxDebuggerLocal(MachineDescription machDesc, |
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boolean useCache) throws DebuggerException { |
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this.machDesc = machDesc; |
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utils = new DebuggerUtilities(machDesc.getAddressSize(), |
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machDesc.isBigEndian()) { |
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public void checkAlignment(long address, long alignment) { |
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// Need to override default checkAlignment because we need to |
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// relax alignment constraints on Linux/x86 |
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if ( (address % alignment != 0) |
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&&(alignment != 8 || address % 4 != 0)) { |
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throw new UnalignedAddressException( |
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"Trying to read at address: " |
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+ addressValueToString(address) |
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+ " with alignment: " + alignment, |
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address); |
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} |
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} |
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}; |
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if (useCache) { |
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// FIXME: re-test necessity of cache on Linux, where data |
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// fetching is faster |
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// Cache portion of the remote process's address space. |
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// Fetching data over the socket connection to dbx is slow. |
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// Might be faster if we were using a binary protocol to talk to |
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// dbx, but would have to test. For now, this cache works best |
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// if it covers the entire heap of the remote process. FIXME: at |
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// least should make this tunable from the outside, i.e., via |
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// the UI. This is a cache of 4096 4K pages, or 16 MB. The page |
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// size must be adjusted to be the hardware's page size. |
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// (FIXME: should pick this up from the debugger.) |
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initCache(4096, parseCacheNumPagesProperty(4096)); |
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} |
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workerThread = new LinuxDebuggerLocalWorkerThread(this); |
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workerThread.start(); |
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} |
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/** From the Debugger interface via JVMDebugger */ |
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public boolean hasProcessList() throws DebuggerException { |
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return false; |
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} |
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/** From the Debugger interface via JVMDebugger */ |
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public List getProcessList() throws DebuggerException { |
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throw new DebuggerException("getProcessList not implemented yet"); |
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} |
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private void checkAttached() throws DebuggerException { |
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if (attached) { |
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if (isCore) { |
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throw new DebuggerException("attached to a core dump already"); |
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} else { |
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throw new DebuggerException("attached to a process already"); |
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} |
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} |
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} |
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private void requireAttach() { |
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if (! attached) { |
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throw new RuntimeException("not attached to a process or a core!"); |
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} |
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} |
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/* called from attach methods */ |
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private void findABIVersion() throws DebuggerException { |
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if (lookupByName0("libjvm.so", "__vt_10JavaThread") != 0) { |
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// old C++ ABI |
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useGCC32ABI = false; |
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} else { |
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// new C++ ABI |
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useGCC32ABI = true; |
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} |
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} |
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// Get namespace PID from /proc/<PID>/status. |
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private int getNamespacePID(Path statusPath) { |
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try (var lines = Files.lines(statusPath)) { |
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return lines.map(s -> s.split("\\s+")) |
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.filter(a -> a.length == 3) |
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.filter(a -> a[0].equals("NSpid:")) |
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.mapToInt(a -> Integer.valueOf(a[2])) |
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.findFirst() |
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.getAsInt(); |
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} catch (IOException | NoSuchElementException e) { |
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return Integer.valueOf(statusPath.getParent() |
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.toFile() |
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.getName()); |
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} |
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} |
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// Get LWPID in the host from the container's LWPID. |
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// Returns -1 if the process is running in the host. |
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public int getHostPID(int id) { |
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return (nspidMap == null) ? -1 : nspidMap.get(id); |
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} |
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|
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// Fill namespace PID map from procfs. |
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// This method scans all tasks (/proc/<PID>/task) in the process. |
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private void fillNSpidMap(Path proc) { |
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Path task = Paths.get(proc.toString(), "task"); |
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try (var tasks = Files.list(task)) { |
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nspidMap = tasks.filter(p -> !p.toString().startsWith(".")) |
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.collect(Collectors.toMap(p -> Integer.valueOf(getNamespacePID(Paths.get(p.toString(), "status"))), |
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p -> Integer.valueOf(p.toFile().getName()))); |
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} catch (IOException e) { |
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throw new UncheckedIOException(e); |
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} |
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} |
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/** From the Debugger interface via JVMDebugger */ |
306 |
public synchronized void attach(int processID) throws DebuggerException { |
|
307 |
checkAttached(); |
|
308 |
threadList = new ArrayList(); |
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loadObjectList = new ArrayList(); |
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310 |
|
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311 |
Path proc = Paths.get("/proc", Integer.toString(processID)); |
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312 |
int NSpid = getNamespacePID(Paths.get(proc.toString(), "status")); |
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313 |
if (NSpid != processID) { |
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314 |
// If PID different from namespace PID, we can assume the process |
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315 |
// is running in the container. |
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316 |
// So we need to set SA_ALTROOT environment variable that SA reads |
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317 |
// binaries in the container. |
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318 |
setSAAltRoot0(Paths.get(proc.toString(), "root").toString()); |
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319 |
fillNSpidMap(proc); |
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320 |
} |
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321 |
|
1 | 322 |
class AttachTask implements WorkerThreadTask { |
323 |
int pid; |
|
51203
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324 |
boolean isInContainer; |
1 | 325 |
public void doit(LinuxDebuggerLocal debugger) { |
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326 |
debugger.attach0(pid, isInContainer); |
1 | 327 |
debugger.attached = true; |
328 |
debugger.isCore = false; |
|
329 |
findABIVersion(); |
|
330 |
} |
|
331 |
} |
|
332 |
||
333 |
AttachTask task = new AttachTask(); |
|
334 |
task.pid = processID; |
|
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335 |
task.isInContainer = (processID != NSpid); |
1 | 336 |
workerThread.execute(task); |
337 |
} |
|
338 |
||
339 |
/** From the Debugger interface via JVMDebugger */ |
|
340 |
public synchronized void attach(String execName, String coreName) { |
|
341 |
checkAttached(); |
|
342 |
threadList = new ArrayList(); |
|
343 |
loadObjectList = new ArrayList(); |
|
344 |
attach0(execName, coreName); |
|
345 |
attached = true; |
|
346 |
isCore = true; |
|
347 |
findABIVersion(); |
|
348 |
} |
|
349 |
||
350 |
/** From the Debugger interface via JVMDebugger */ |
|
351 |
public synchronized boolean detach() { |
|
352 |
if (!attached) { |
|
353 |
return false; |
|
354 |
} |
|
355 |
||
356 |
threadList = null; |
|
357 |
loadObjectList = null; |
|
358 |
||
359 |
if (isCore) { |
|
360 |
detach0(); |
|
361 |
attached = false; |
|
362 |
return true; |
|
363 |
} else { |
|
364 |
class DetachTask implements WorkerThreadTask { |
|
365 |
boolean result = false; |
|
366 |
||
367 |
public void doit(LinuxDebuggerLocal debugger) { |
|
368 |
debugger.detach0(); |
|
369 |
debugger.attached = false; |
|
370 |
result = true; |
|
371 |
} |
|
372 |
} |
|
373 |
||
374 |
DetachTask task = new DetachTask(); |
|
375 |
workerThread.execute(task); |
|
376 |
return task.result; |
|
377 |
} |
|
378 |
} |
|
379 |
||
380 |
/** From the Debugger interface via JVMDebugger */ |
|
381 |
public Address parseAddress(String addressString) |
|
382 |
throws NumberFormatException { |
|
383 |
long addr = utils.scanAddress(addressString); |
|
384 |
if (addr == 0) { |
|
385 |
return null; |
|
386 |
} |
|
387 |
return new LinuxAddress(this, addr); |
|
388 |
} |
|
389 |
||
390 |
/** From the Debugger interface via JVMDebugger */ |
|
391 |
public String getOS() { |
|
392 |
return PlatformInfo.getOS(); |
|
393 |
} |
|
394 |
||
395 |
/** From the Debugger interface via JVMDebugger */ |
|
396 |
public String getCPU() { |
|
397 |
return PlatformInfo.getCPU(); |
|
398 |
} |
|
399 |
||
400 |
public boolean hasConsole() throws DebuggerException { |
|
401 |
return false; |
|
402 |
} |
|
403 |
||
404 |
public String consoleExecuteCommand(String cmd) throws DebuggerException { |
|
405 |
throw new DebuggerException("No debugger console available on Linux"); |
|
406 |
} |
|
407 |
||
408 |
public String getConsolePrompt() throws DebuggerException { |
|
409 |
return null; |
|
410 |
} |
|
411 |
||
412 |
/* called from lookup */ |
|
413 |
private long handleGCC32ABI(long addr, String symbol) throws DebuggerException { |
|
414 |
if (useGCC32ABI && symbol.startsWith("_ZTV")) { |
|
415 |
return addr + (2 * machDesc.getAddressSize()); |
|
416 |
} else { |
|
417 |
return addr; |
|
418 |
} |
|
419 |
} |
|
420 |
||
421 |
/** From the SymbolLookup interface via Debugger and JVMDebugger */ |
|
422 |
public synchronized Address lookup(String objectName, String symbol) { |
|
423 |
requireAttach(); |
|
424 |
if (!attached) { |
|
425 |
return null; |
|
426 |
} |
|
427 |
||
428 |
if (isCore) { |
|
429 |
long addr = lookupByName0(objectName, symbol); |
|
430 |
return (addr == 0)? null : new LinuxAddress(this, handleGCC32ABI(addr, symbol)); |
|
431 |
} else { |
|
432 |
class LookupByNameTask implements WorkerThreadTask { |
|
433 |
String objectName, symbol; |
|
434 |
Address result; |
|
435 |
||
436 |
public void doit(LinuxDebuggerLocal debugger) { |
|
437 |
long addr = debugger.lookupByName0(objectName, symbol); |
|
438 |
result = (addr == 0 ? null : new LinuxAddress(debugger, handleGCC32ABI(addr, symbol))); |
|
439 |
} |
|
440 |
} |
|
441 |
||
442 |
LookupByNameTask task = new LookupByNameTask(); |
|
443 |
task.objectName = objectName; |
|
444 |
task.symbol = symbol; |
|
445 |
workerThread.execute(task); |
|
446 |
return task.result; |
|
447 |
} |
|
448 |
} |
|
449 |
||
450 |
/** From the SymbolLookup interface via Debugger and JVMDebugger */ |
|
451 |
public synchronized OopHandle lookupOop(String objectName, String symbol) { |
|
452 |
Address addr = lookup(objectName, symbol); |
|
453 |
if (addr == null) { |
|
454 |
return null; |
|
455 |
} |
|
456 |
return addr.addOffsetToAsOopHandle(0); |
|
457 |
} |
|
458 |
||
459 |
/** From the Debugger interface */ |
|
460 |
public MachineDescription getMachineDescription() { |
|
461 |
return machDesc; |
|
462 |
} |
|
463 |
||
464 |
//---------------------------------------------------------------------- |
|
465 |
// Implementation of ThreadAccess interface |
|
466 |
// |
|
467 |
||
468 |
/** From the ThreadAccess interface via Debugger and JVMDebugger */ |
|
469 |
public ThreadProxy getThreadForIdentifierAddress(Address addr) { |
|
470 |
return new LinuxThread(this, addr); |
|
471 |
} |
|
472 |
||
473 |
/** From the ThreadAccess interface via Debugger and JVMDebugger */ |
|
474 |
public ThreadProxy getThreadForThreadId(long id) { |
|
475 |
return new LinuxThread(this, id); |
|
476 |
} |
|
477 |
||
478 |
//---------------------------------------------------------------------- |
|
479 |
// Internal routines (for implementation of LinuxAddress). |
|
480 |
// These must not be called until the MachineDescription has been set up. |
|
481 |
// |
|
482 |
||
483 |
/** From the LinuxDebugger interface */ |
|
484 |
public String addressValueToString(long address) { |
|
485 |
return utils.addressValueToString(address); |
|
486 |
} |
|
487 |
||
488 |
/** From the LinuxDebugger interface */ |
|
489 |
public LinuxAddress readAddress(long address) |
|
490 |
throws UnmappedAddressException, UnalignedAddressException { |
|
491 |
long value = readAddressValue(address); |
|
492 |
return (value == 0 ? null : new LinuxAddress(this, value)); |
|
493 |
} |
|
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|
494 |
public LinuxAddress readCompOopAddress(long address) |
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|
495 |
throws UnmappedAddressException, UnalignedAddressException { |
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|
496 |
long value = readCompOopAddressValue(address); |
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|
497 |
return (value == 0 ? null : new LinuxAddress(this, value)); |
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|
498 |
} |
1 | 499 |
|
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|
500 |
public LinuxAddress readCompKlassAddress(long address) |
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|
501 |
throws UnmappedAddressException, UnalignedAddressException { |
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|
502 |
long value = readCompKlassAddressValue(address); |
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|
503 |
return (value == 0 ? null : new LinuxAddress(this, value)); |
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|
504 |
} |
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|
505 |
|
1 | 506 |
/** From the LinuxDebugger interface */ |
507 |
public LinuxOopHandle readOopHandle(long address) |
|
508 |
throws UnmappedAddressException, UnalignedAddressException, |
|
509 |
NotInHeapException { |
|
510 |
long value = readAddressValue(address); |
|
511 |
return (value == 0 ? null : new LinuxOopHandle(this, value)); |
|
512 |
} |
|
360
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|
513 |
public LinuxOopHandle readCompOopHandle(long address) |
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|
514 |
throws UnmappedAddressException, UnalignedAddressException, |
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|
515 |
NotInHeapException { |
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|
516 |
long value = readCompOopAddressValue(address); |
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|
517 |
return (value == 0 ? null : new LinuxOopHandle(this, value)); |
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|
518 |
} |
1 | 519 |
|
520 |
//---------------------------------------------------------------------- |
|
521 |
// Thread context access |
|
522 |
// |
|
523 |
||
524 |
public synchronized long[] getThreadIntegerRegisterSet(int lwp_id) |
|
525 |
throws DebuggerException { |
|
526 |
requireAttach(); |
|
527 |
if (isCore) { |
|
528 |
return getThreadIntegerRegisterSet0(lwp_id); |
|
529 |
} else { |
|
530 |
class GetThreadIntegerRegisterSetTask implements WorkerThreadTask { |
|
531 |
int lwp_id; |
|
532 |
long[] result; |
|
533 |
public void doit(LinuxDebuggerLocal debugger) { |
|
534 |
result = debugger.getThreadIntegerRegisterSet0(lwp_id); |
|
535 |
} |
|
536 |
} |
|
537 |
||
538 |
GetThreadIntegerRegisterSetTask task = new GetThreadIntegerRegisterSetTask(); |
|
539 |
task.lwp_id = lwp_id; |
|
540 |
workerThread.execute(task); |
|
541 |
return task.result; |
|
542 |
} |
|
543 |
} |
|
544 |
||
545 |
/** Need to override this to relax alignment checks on x86. */ |
|
546 |
public long readCInteger(long address, long numBytes, boolean isUnsigned) |
|
547 |
throws UnmappedAddressException, UnalignedAddressException { |
|
548 |
// Only slightly relaxed semantics -- this is a hack, but is |
|
549 |
// necessary on x86 where it seems the compiler is |
|
550 |
// putting some global 64-bit data on 32-bit boundaries |
|
551 |
if (numBytes == 8) { |
|
552 |
utils.checkAlignment(address, 4); |
|
553 |
} else { |
|
554 |
utils.checkAlignment(address, numBytes); |
|
555 |
} |
|
556 |
byte[] data = readBytes(address, numBytes); |
|
557 |
return utils.dataToCInteger(data, isUnsigned); |
|
558 |
} |
|
559 |
||
560 |
// Overridden from DebuggerBase because we need to relax alignment |
|
561 |
// constraints on x86 |
|
562 |
public long readJLong(long address) |
|
563 |
throws UnmappedAddressException, UnalignedAddressException { |
|
564 |
utils.checkAlignment(address, jintSize); |
|
565 |
byte[] data = readBytes(address, jlongSize); |
|
566 |
return utils.dataToJLong(data, jlongSize); |
|
567 |
} |
|
568 |
||
569 |
//---------------------------------------------------------------------- |
|
570 |
// Address access. Can not be package private, but should only be |
|
571 |
// accessed by the architecture-specific subpackages. |
|
572 |
||
573 |
/** From the LinuxDebugger interface */ |
|
574 |
public long getAddressValue(Address addr) { |
|
575 |
if (addr == null) return 0; |
|
576 |
return ((LinuxAddress) addr).getValue(); |
|
577 |
} |
|
578 |
||
579 |
/** From the LinuxDebugger interface */ |
|
580 |
public Address newAddress(long value) { |
|
581 |
if (value == 0) return null; |
|
582 |
return new LinuxAddress(this, value); |
|
583 |
} |
|
584 |
||
585 |
/** From the LinuxCDebugger interface */ |
|
586 |
public List/*<ThreadProxy>*/ getThreadList() { |
|
587 |
requireAttach(); |
|
588 |
return threadList; |
|
589 |
} |
|
590 |
||
591 |
/** From the LinuxCDebugger interface */ |
|
592 |
public List/*<LoadObject>*/ getLoadObjectList() { |
|
593 |
requireAttach(); |
|
594 |
return loadObjectList; |
|
595 |
} |
|
596 |
||
597 |
/** From the LinuxCDebugger interface */ |
|
598 |
public synchronized ClosestSymbol lookup(long addr) { |
|
599 |
requireAttach(); |
|
600 |
if (isCore) { |
|
601 |
return lookupByAddress0(addr); |
|
602 |
} else { |
|
603 |
class LookupByAddressTask implements WorkerThreadTask { |
|
604 |
long addr; |
|
605 |
ClosestSymbol result; |
|
606 |
||
607 |
public void doit(LinuxDebuggerLocal debugger) { |
|
608 |
result = debugger.lookupByAddress0(addr); |
|
609 |
} |
|
610 |
} |
|
611 |
||
612 |
LookupByAddressTask task = new LookupByAddressTask(); |
|
613 |
task.addr = addr; |
|
614 |
workerThread.execute(task); |
|
615 |
return task.result; |
|
616 |
} |
|
617 |
} |
|
618 |
||
619 |
public CDebugger getCDebugger() { |
|
620 |
if (cdbg == null) { |
|
621 |
cdbg = new LinuxCDebugger(this); |
|
622 |
} |
|
623 |
return cdbg; |
|
624 |
} |
|
625 |
||
626 |
/** This reads bytes from the remote process. */ |
|
627 |
public synchronized ReadResult readBytesFromProcess(long address, |
|
628 |
long numBytes) throws UnmappedAddressException, DebuggerException { |
|
629 |
requireAttach(); |
|
630 |
if (isCore) { |
|
631 |
byte[] res = readBytesFromProcess0(address, numBytes); |
|
632 |
return (res != null)? new ReadResult(res) : new ReadResult(address); |
|
633 |
} else { |
|
634 |
class ReadBytesFromProcessTask implements WorkerThreadTask { |
|
635 |
long address, numBytes; |
|
636 |
ReadResult result; |
|
637 |
public void doit(LinuxDebuggerLocal debugger) { |
|
638 |
byte[] res = debugger.readBytesFromProcess0(address, numBytes); |
|
639 |
if (res != null) |
|
640 |
result = new ReadResult(res); |
|
641 |
else |
|
642 |
result = new ReadResult(address); |
|
643 |
} |
|
644 |
} |
|
645 |
||
646 |
ReadBytesFromProcessTask task = new ReadBytesFromProcessTask(); |
|
647 |
task.address = address; |
|
648 |
task.numBytes = numBytes; |
|
649 |
workerThread.execute(task); |
|
650 |
return task.result; |
|
651 |
} |
|
652 |
} |
|
653 |
||
654 |
public void writeBytesToProcess(long address, long numBytes, byte[] data) |
|
655 |
throws UnmappedAddressException, DebuggerException { |
|
656 |
// FIXME |
|
657 |
throw new DebuggerException("Unimplemented"); |
|
658 |
} |
|
659 |
||
660 |
static { |
|
661 |
System.loadLibrary("saproc"); |
|
662 |
init0(); |
|
663 |
} |
|
664 |
} |