| /* |
| * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.jdi; |
| |
| import com.sun.jdi.event.EventQueue; |
| import com.sun.jdi.request.EventRequestManager; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * A virtual machine targeted for debugging. |
| * More precisely, a {@link Mirror mirror} representing the |
| * composite state of the target VM. |
| * All other mirrors are associated with an instance of this |
| * interface. Access to all other mirrors is achieved |
| * directly or indirectly through an instance of this |
| * interface. |
| * Access to global VM properties and control of VM execution |
| * are supported directly by this interface. |
| * <P> |
| * Instances of this interface are created by instances of |
| * {@link com.sun.jdi.connect.Connector}. For example, |
| * an {@link com.sun.jdi.connect.AttachingConnector AttachingConnector} |
| * attaches to a target VM and returns its virtual machine mirror. |
| * A Connector will typically create a VirtualMachine by invoking |
| * the VirtualMachineManager's {@link |
| * com.sun.jdi.VirtualMachineManager#createVirtualMachine(Connection)} |
| * createVirtualMachine(Connection) method. |
| * <p> |
| * Note that a target VM launched by a launching connector is not |
| * guaranteed to be stable until after the {@link com.sun.jdi.event.VMStartEvent} has been |
| * received. |
| * <p> |
| * Any method on <code>VirtualMachine</code> which |
| * takes <code>VirtualMachine</code> as an parameter may throw |
| * {@link com.sun.jdi.VMDisconnectedException} if the target VM is |
| * disconnected and the {@link com.sun.jdi.event.VMDisconnectEvent} has been or is |
| * available to be read from the {@link com.sun.jdi.event.EventQueue}. |
| * <p> |
| * Any method on <code>VirtualMachine</code> which |
| * takes <code>VirtualMachine</code> as an parameter may throw |
| * {@link com.sun.jdi.VMOutOfMemoryException} if the target VM has run out of memory. |
| * |
| * @author Robert Field |
| * @author Gordon Hirsch |
| * @author James McIlree |
| * @since 1.3 |
| */ |
| @jdk.Exported |
| public interface VirtualMachine extends Mirror { |
| |
| /** |
| * Returns the loaded reference types that |
| * match a given name. The name must be fully qualified |
| * (for example, java.lang.String). The returned list |
| * will contain a {@link ReferenceType} for each class |
| * or interface found with the given name. The search |
| * is confined to loaded classes only; no attempt is made |
| * to load a class of the given name. |
| * <P> |
| * The returned list will include reference types |
| * loaded at least to the point of preparation and |
| * types (like array) for which preparation is |
| * not defined. |
| * |
| * @param className the class/interface name to search for |
| * @return a list of {@link ReferenceType} objects, each |
| * mirroring a type in the target VM with the given name. |
| */ |
| List<ReferenceType> classesByName(String className); |
| |
| /** |
| * Returns all loaded types. For each loaded type in the target |
| * VM a {@link ReferenceType} will be placed in the returned list. |
| * The list will include ReferenceTypes which mirror classes, |
| * interfaces, and array types. |
| * <P> |
| * The returned list will include reference types |
| * loaded at least to the point of preparation and |
| * types (like array) for which preparation is |
| * not defined. |
| * |
| * @return a list of {@link ReferenceType} objects, each mirroring |
| * a loaded type in the target VM. |
| */ |
| List<ReferenceType> allClasses(); |
| |
| /** |
| * All classes given are redefined according to the |
| * definitions supplied. A method in a redefined class |
| * is called 'equivalent' (to the old version of the |
| * method) if |
| * <UL> |
| * <LI>their bytecodes are the same except for indicies into |
| * the constant pool, and |
| * <LI>the referenced constants are equal. |
| * </UL> |
| * Otherwise, the new method is called 'non-equivalent'. |
| * If a redefined method has active stack frames, those active |
| * frames continue to run the bytecodes of the previous version of the |
| * method. If the new version of such a method is non-equivalent, |
| * then a method from one of these active frames is called 'obsolete' and |
| * {@link Method#isObsolete Method.isObsolete()} |
| * will return true when called on one of these methods. |
| * If resetting such a frame is desired, use |
| * {@link ThreadReference#popFrames ThreadReference.popFrames(StackFrame)} |
| * to pop the old obsolete method execution from the stack. |
| * New invocations of redefined methods will always invoke the new versions. |
| * <p> |
| * This function does not cause any initialization except |
| * that which would occur under the customary JVM semantics. |
| * In other words, redefining a class does not cause |
| * its initializers to be run. The values of preexisting |
| * static variables will remain as they were prior to the |
| * call. However, completely uninitialized (new) static |
| * variables will be assigned their default value. |
| * <p> |
| * If a redefined class has instances then all those |
| * instances will have the fields defined by the redefined |
| * class at the completion of the call. Preexisting fields |
| * will retain their previous values. Any new fields will |
| * have their default values; no instance initializers or |
| * constructors are run. |
| * <p> |
| * Threads need not be suspended. |
| * <p> |
| * No events are generated by this function. |
| * <p> |
| * All breakpoints in the redefined classes are deleted. |
| * <p> |
| * Not all target virtual machines support this operation. |
| * Use {@link #canRedefineClasses() canRedefineClasses()} |
| * to determine if the operation is supported. |
| * Use {@link #canAddMethod() canAddMethod()} |
| * to determine if the redefinition can add methods. |
| * Use {@link #canUnrestrictedlyRedefineClasses() canUnrestrictedlyRedefineClasses()} |
| * to determine if the redefinition can change the schema, |
| * delete methods, change the class hierarchy, etc. |
| * |
| * @param classToBytes A map from {@link ReferenceType} |
| * to array of byte. |
| * The bytes represent the new class definition and |
| * are in Java Virtual Machine class file format. |
| * |
| * @throws java.lang.UnsupportedOperationException if |
| * the target virtual machine does not support this |
| * operation. |
| * <UL> |
| * <LI>If {@link #canRedefineClasses() canRedefineClasses()} |
| * is false any call of this method will throw this exception. |
| * <LI>If {@link #canAddMethod() canAddMethod()} is false |
| * attempting to add a method will throw this exception. |
| * <LI>If {@link #canUnrestrictedlyRedefineClasses() |
| * canUnrestrictedlyRedefineClasses()} |
| * is false, attempting any of the following will throw |
| * this exception |
| * <UL> |
| * <LI>changing the schema (the fields) |
| * <LI>changing the hierarchy (subclasses, interfaces) |
| * <LI>deleting a method |
| * <LI>changing class modifiers |
| * <LI>changing method modifiers |
| * </UL> |
| * </UL> |
| * |
| * @throws java.lang.NoClassDefFoundError if the bytes |
| * don't correspond to the reference type (the names |
| * don't match). |
| * |
| * @throws java.lang.VerifyError if a "verifier" detects |
| * that a class, though well formed, contains an internal |
| * inconsistency or security problem. |
| * |
| * @throws java.lang.ClassFormatError if the bytes |
| * do not represent a valid class. |
| * |
| * @throws java.lang.ClassCircularityError if a |
| * circularity has been detected while initializing a class. |
| * |
| * @throws java.lang.UnsupportedClassVersionError if the |
| * major and minor version numbers in bytes |
| * are not supported by the VM. |
| * |
| * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}. |
| * |
| * @see Method#isObsolete |
| * @see ThreadReference#popFrames |
| * @see #canRedefineClasses |
| * @see #canAddMethod |
| * @see #canUnrestrictedlyRedefineClasses |
| * |
| * @since 1.4 |
| */ |
| void redefineClasses(Map<? extends ReferenceType,byte[]> classToBytes); |
| |
| /** |
| * Returns a list of the currently running threads. For each |
| * running thread in the target VM, a {@link ThreadReference} |
| * that mirrors it is placed in the list. |
| * The returned list contains threads created through |
| * java.lang.Thread, all native threads attached to |
| * the target VM through JNI, and system threads created |
| * by the target VM. Thread objects that have |
| * not yet been started |
| * (see {@link java.lang.Thread#start Thread.start()}) |
| * and thread objects that have |
| * completed their execution are not included in the returned list. |
| * |
| * @return a list of {@link ThreadReference} objects, one for each |
| * running thread in the mirrored VM. |
| */ |
| List<ThreadReference> allThreads(); |
| |
| /** |
| * Suspends the execution of the application running in this |
| * virtual machine. All threads currently running will be suspended. |
| * <p> |
| * Unlike {@link java.lang.Thread#suspend Thread.suspend()}, |
| * suspends of both the virtual machine and individual threads are |
| * counted. Before a thread will run again, it must be resumed |
| * (through {@link #resume} or {@link ThreadReference#resume}) |
| * the same number of times it has been suspended. |
| * |
| * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}. |
| */ |
| void suspend(); |
| |
| /** |
| * Continues the execution of the application running in this |
| * virtual machine. All threads are resumed as documented in |
| * {@link ThreadReference#resume}. |
| * |
| * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}. |
| * |
| * @see #suspend |
| */ |
| void resume(); |
| |
| /** |
| * Returns each thread group which does not have a parent. For each |
| * top level thread group a {@link ThreadGroupReference} is placed in the |
| * returned list. |
| * <p> |
| * This command may be used as the first step in building a tree |
| * (or trees) of the existing thread groups. |
| * |
| * @return a list of {@link ThreadGroupReference} objects, one for each |
| * top level thread group. |
| */ |
| List<ThreadGroupReference> topLevelThreadGroups(); |
| |
| /** |
| * Returns the event queue for this virtual machine. |
| * A virtual machine has only one {@link EventQueue} object, this |
| * method will return the same instance each time it |
| * is invoked. |
| * |
| * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}. |
| * |
| * @return the {@link EventQueue} for this virtual machine. |
| */ |
| EventQueue eventQueue(); |
| |
| /** |
| * Returns the event request manager for this virtual machine. |
| * The {@link EventRequestManager} controls user settable events |
| * such as breakpoints. |
| * A virtual machine has only one {@link EventRequestManager} object, |
| * this method will return the same instance each time it |
| * is invoked. |
| * |
| * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}. |
| * |
| * @return the {@link EventRequestManager} for this virtual machine. |
| */ |
| EventRequestManager eventRequestManager(); |
| |
| /** |
| * Creates a {@link BooleanValue} for the given value. This value |
| * can be used for setting and comparing against a value retrieved |
| * from a variable or field in this virtual machine. |
| * |
| * @param value a boolean for which to create the value |
| * @return the {@link BooleanValue} for the given boolean. |
| */ |
| BooleanValue mirrorOf(boolean value); |
| |
| /** |
| * Creates a {@link ByteValue} for the given value. This value |
| * can be used for setting and comparing against a value retrieved |
| * from a variable or field in this virtual machine. |
| * |
| * @param value a byte for which to create the value |
| * @return the {@link ByteValue} for the given byte. |
| */ |
| ByteValue mirrorOf(byte value); |
| |
| /** |
| * Creates a {@link CharValue} for the given value. This value |
| * can be used for setting and comparing against a value retrieved |
| * from a variable or field in this virtual machine. |
| * |
| * @param value a char for which to create the value |
| * @return the {@link CharValue} for the given char. |
| */ |
| CharValue mirrorOf(char value); |
| |
| /** |
| * Creates a {@link ShortValue} for the given value. This value |
| * can be used for setting and comparing against a value retrieved |
| * from a variable or field in this virtual machine. |
| * |
| * @param value a short for which to create the value |
| * @return the {@link ShortValue} for the given short. |
| */ |
| ShortValue mirrorOf(short value); |
| |
| /** |
| * Creates an {@link IntegerValue} for the given value. This value |
| * can be used for setting and comparing against a value retrieved |
| * from a variable or field in this virtual machine. |
| * |
| * @param value an int for which to create the value |
| * @return the {@link IntegerValue} for the given int. |
| */ |
| IntegerValue mirrorOf(int value); |
| |
| /** |
| * Creates a {@link LongValue} for the given value. This value |
| * can be used for setting and comparing against a value retrieved |
| * from a variable or field in this virtual machine. |
| * |
| * @param value a long for which to create the value |
| * @return the {@link LongValue} for the given long. |
| */ |
| LongValue mirrorOf(long value); |
| |
| /** |
| * Creates a {@link FloatValue} for the given value. This value |
| * can be used for setting and comparing against a value retrieved |
| * from a variable or field in this virtual machine. |
| * |
| * @param value a float for which to create the value |
| * @return the {@link FloatValue} for the given float. |
| */ |
| FloatValue mirrorOf(float value); |
| |
| /** |
| * Creates a {@link DoubleValue} for the given value. This value |
| * can be used for setting and comparing against a value retrieved |
| * from a variable or field in this virtual machine. |
| * |
| * @param value a double for which to create the value |
| * @return the {@link DoubleValue} for the given double. |
| */ |
| DoubleValue mirrorOf(double value); |
| |
| /** |
| * Creates a string in this virtual machine. |
| * The created string can be used for setting and comparing against |
| * a string value retrieved from a variable or field in this |
| * virtual machine. |
| * |
| * @param value the string to be created |
| * @return a {@link StringReference} that mirrors the newly created |
| * string in the target VM. |
| * @throws VMCannotBeModifiedException if the VirtualMachine is read-only |
| * -see {@link VirtualMachine#canBeModified()}. |
| */ |
| StringReference mirrorOf(String value); |
| |
| |
| /** |
| * Creates a {@link VoidValue}. This value |
| * can be passed to {@link ThreadReference#forceEarlyReturn} |
| * when a void method is to be exited. |
| * |
| * @return the {@link VoidValue}. |
| */ |
| VoidValue mirrorOfVoid(); |
| |
| /** |
| * Returns the {@link java.lang.Process} object for this |
| * virtual machine if launched |
| * by a {@link com.sun.jdi.connect.LaunchingConnector} |
| * |
| * @return the {@link java.lang.Process} object for this virtual |
| * machine, or null if it was not launched by a |
| * {@link com.sun.jdi.connect.LaunchingConnector}. |
| * @throws VMCannotBeModifiedException if the VirtualMachine is read-only |
| * -see {@link VirtualMachine#canBeModified()}. |
| */ |
| Process process(); |
| |
| /** |
| * Invalidates this virtual machine mirror. |
| * The communication channel to the target VM is closed, and |
| * the target VM prepares to accept another subsequent connection |
| * from this debugger or another debugger, including the |
| * following tasks: |
| * <ul> |
| * <li>All event requests are cancelled. |
| * <li>All threads suspended by {@link #suspend} or by |
| * {@link ThreadReference#suspend} are resumed as many |
| * times as necessary for them to run. |
| * <li>Garbage collection is re-enabled in all cases where it was |
| * disabled through {@link ObjectReference#disableCollection}. |
| * </ul> |
| * Any current method invocations executing in the target VM |
| * are continued after the disconnection. Upon completion of any such |
| * method invocation, the invoking thread continues from the |
| * location where it was originally stopped. |
| * <p> |
| * Resources originating in |
| * this VirtualMachine (ObjectReferences, ReferenceTypes, etc.) |
| * will become invalid. |
| */ |
| void dispose(); |
| |
| /** |
| * Causes the mirrored VM to terminate with the given error code. |
| * All resources associated with this VirtualMachine are freed. |
| * If the mirrored VM is remote, the communication channel |
| * to it will be closed. Resources originating in |
| * this VirtualMachine (ObjectReferences, ReferenceTypes, etc.) |
| * will become invalid. |
| * <p> |
| * Threads running in the mirrored VM are abruptly terminated. |
| * A thread death exception is not thrown and |
| * finally blocks are not run. |
| * |
| * @param exitCode the exit code for the target VM. On some platforms, |
| * the exit code might be truncated, for example, to the lower order 8 bits. |
| * |
| * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}. |
| */ |
| void exit(int exitCode); |
| |
| /** |
| * Determines if the target VM supports watchpoints |
| * for field modification. |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| */ |
| boolean canWatchFieldModification(); |
| |
| /** |
| * Determines if the target VM supports watchpoints |
| * for field access. |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| */ |
| boolean canWatchFieldAccess(); |
| |
| /** |
| * Determines if the target VM supports the retrieval |
| * of a method's bytecodes. |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| */ |
| boolean canGetBytecodes(); |
| |
| /** |
| * Determines if the target VM supports the query |
| * of the synthetic attribute of a method or field. |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| */ |
| boolean canGetSyntheticAttribute(); |
| |
| /** |
| * Determines if the target VM supports the retrieval |
| * of the monitors owned by a thread. |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| */ |
| boolean canGetOwnedMonitorInfo(); |
| |
| /** |
| * Determines if the target VM supports the retrieval |
| * of the monitor for which a thread is currently waiting. |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| */ |
| boolean canGetCurrentContendedMonitor(); |
| |
| /** |
| * Determines if the target VM supports the retrieval |
| * of the monitor information for an object. |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| */ |
| boolean canGetMonitorInfo(); |
| |
| /** |
| * Determines if the target VM supports filtering |
| * events by specific instance object. For example, |
| * see {@link com.sun.jdi.request.BreakpointRequest#addInstanceFilter}. |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| */ |
| boolean canUseInstanceFilters(); |
| |
| /** |
| * Determines if the target VM supports any level |
| * of class redefinition. |
| * @see #redefineClasses |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.4 |
| */ |
| boolean canRedefineClasses(); |
| |
| /** |
| * Determines if the target VM supports the addition |
| * of methods when performing class redefinition. |
| * @see #redefineClasses |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.4 |
| */ |
| boolean canAddMethod(); |
| |
| /** |
| * Determines if the target VM supports unrestricted |
| * changes when performing class redefinition. |
| * @see #redefineClasses |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.4 |
| */ |
| boolean canUnrestrictedlyRedefineClasses(); |
| |
| /** |
| * Determines if the target VM supports popping |
| * frames of a threads stack. |
| * @see ThreadReference#popFrames |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.4 |
| */ |
| boolean canPopFrames(); |
| |
| /** |
| * Determines if the target VM supports getting |
| * the source debug extension. |
| * @see ReferenceType#sourceDebugExtension |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.4 |
| */ |
| boolean canGetSourceDebugExtension(); |
| |
| /** |
| * Determines if the target VM supports the creation of |
| * {@link com.sun.jdi.request.VMDeathRequest}s. |
| * @see com.sun.jdi.request.EventRequestManager#createVMDeathRequest |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.4 |
| */ |
| boolean canRequestVMDeathEvent(); |
| |
| /** |
| * Determines if the target VM supports the inclusion of return values |
| * in |
| * {@link com.sun.jdi.event.MethodExitEvent}s. |
| * @see com.sun.jdi.request.EventRequestManager#createMethodExitRequest |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.6 |
| */ |
| boolean canGetMethodReturnValues(); |
| |
| /** |
| * Determines if the target VM supports the accessing of class instances, |
| * instance counts, and referring objects. |
| * |
| * @see #instanceCounts |
| * @see ReferenceType#instances(long) |
| * @see ObjectReference#referringObjects(long) |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.6 |
| */ |
| boolean canGetInstanceInfo(); |
| |
| |
| /** |
| * Determines if the target VM supports the filtering of |
| * class prepare events by source name. |
| * |
| * see {@link com.sun.jdi.request.ClassPrepareRequest#addSourceNameFilter}. |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.6 |
| */ |
| boolean canUseSourceNameFilters(); |
| |
| /** |
| * Determines if the target VM supports the forcing of a method to |
| * return early. |
| * |
| * @see ThreadReference#forceEarlyReturn(Value) |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.6 |
| */ |
| boolean canForceEarlyReturn(); |
| |
| /** |
| * Determines if the target VM is a read-only VM. If a method which |
| * would modify the state of the VM is called on a read-only VM, |
| * then {@link VMCannotBeModifiedException} is thrown. |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.5 |
| */ |
| |
| boolean canBeModified(); |
| |
| /** |
| * Determines if the target VM supports the creation of |
| * {@link com.sun.jdi.request.MonitorContendedEnterRequest}s. |
| * {@link com.sun.jdi.request.MonitorContendedEnteredRequest}s. |
| * {@link com.sun.jdi.request.MonitorWaitRequest}s. |
| * {@link com.sun.jdi.request.MonitorWaitedRequest}s. |
| * @see com.sun.jdi.request.EventRequestManager#createMonitorContendedEnterRequest |
| * @see com.sun.jdi.request.EventRequestManager#createMonitorContendedEnteredRequest |
| * @see com.sun.jdi.request.EventRequestManager#createMonitorWaitRequest |
| * @see com.sun.jdi.request.EventRequestManager#createMonitorWaitedRequest |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.6 |
| */ |
| |
| boolean canRequestMonitorEvents(); |
| |
| /** |
| * Determines if the target VM supports getting which |
| * frame has acquired a monitor. |
| * @see com.sun.jdi.ThreadReference#ownedMonitorsAndFrames |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.6 |
| */ |
| |
| boolean canGetMonitorFrameInfo(); |
| |
| |
| /** |
| * Determines if the target VM supports reading class file |
| * major and minor versions. |
| * |
| * @see ReferenceType#majorVersion() |
| * @see ReferenceType#minorVersion() |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.6 |
| */ |
| boolean canGetClassFileVersion(); |
| |
| /** |
| * Determines if the target VM supports getting constant pool |
| * information of a class. |
| * |
| * @see ReferenceType#constantPoolCount() |
| * @see ReferenceType#constantPool() |
| * |
| * @return <code>true</code> if the feature is supported, |
| * <code>false</code> otherwise. |
| * |
| * @since 1.6 |
| */ |
| boolean canGetConstantPool(); |
| |
| /** |
| * Set this VM's default stratum (see {@link Location} for a |
| * discussion of strata). Overrides the per-class default set |
| * in the class file. |
| * <P> |
| * Affects location queries (such as, |
| * {@link Location#sourceName()}) |
| * and the line boundaries used in |
| * single stepping. |
| * |
| * @param stratum the stratum to set as VM default, |
| * or null to use per-class defaults. |
| * |
| * @throws java.lang.UnsupportedOperationException if the |
| * target virtual machine does not support this operation. |
| * |
| * @since 1.4 |
| */ |
| void setDefaultStratum(String stratum); |
| |
| /** |
| * Return this VM's default stratum. |
| * |
| * @see #setDefaultStratum(String) |
| * @see ReferenceType#defaultStratum() |
| * @return <code>null</code> (meaning that the per-class |
| * default - {@link ReferenceType#defaultStratum()} - |
| * should be used) unless the default stratum has been |
| * set with |
| * {@link #setDefaultStratum(String)}. |
| * |
| * @since 1.4 |
| */ |
| String getDefaultStratum(); |
| |
| /** |
| * Returns the number of instances of each ReferenceType in the 'refTypes' |
| * list. |
| * Only instances that are reachable for the purposes of garbage collection |
| * are counted. |
| * <p> |
| * Not all target virtual machines support this operation. |
| * Use {@link VirtualMachine#canGetInstanceInfo()} |
| * to determine if the operation is supported. |
| * |
| * @see ReferenceType#instances(long) |
| * @see ObjectReference#referringObjects(long) |
| * @param refTypes the list of {@link ReferenceType} objects for which counts |
| * are to be obtained. |
| * |
| * @return an array of <code>long</code> containing one element for each |
| * element in the 'refTypes' list. Element i of the array contains |
| * the number of instances in the target VM of the ReferenceType at |
| * position i in the 'refTypes' list. |
| * If the 'refTypes' list is empty, a zero-length array is returned. |
| * If a ReferenceType in refTypes has been garbage collected, zero |
| * is returned for its instance count. |
| * @throws java.lang.UnsupportedOperationException if |
| * the target virtual machine does not support this |
| * operation - see |
| * {@link VirtualMachine#canGetInstanceInfo() canGetInstanceInfo()} |
| * @throws NullPointerException if the 'refTypes' list is null. |
| * @since 1.6 |
| */ |
| long[] instanceCounts(List<? extends ReferenceType> refTypes); |
| |
| /** |
| * Returns text information on the target VM and the |
| * debugger support that mirrors it. No specific format |
| * for this information is guaranteed. |
| * Typically, this string contains version information for the |
| * target VM and debugger interfaces. |
| * More precise information |
| * on VM and JDI versions is available through |
| * {@link #version}, {@link VirtualMachineManager#majorInterfaceVersion}, |
| * and {@link VirtualMachineManager#minorInterfaceVersion} |
| * |
| * @return the description. |
| */ |
| String description(); |
| |
| /** |
| * Returns the version of the Java Runtime Environment in the target |
| * VM as reported by the property <code>java.version</code>. |
| * For obtaining the JDI interface version, use |
| * {@link VirtualMachineManager#majorInterfaceVersion} |
| * and {@link VirtualMachineManager#minorInterfaceVersion} |
| * |
| * @return the target VM version. |
| */ |
| String version(); |
| |
| /** |
| * Returns the name of the target VM as reported by the |
| * property <code>java.vm.name</code>. |
| * |
| * @return the target VM name. |
| */ |
| String name(); |
| |
| /** All tracing is disabled. */ |
| int TRACE_NONE = 0x00000000; |
| /** Tracing enabled for JDWP packets sent to target VM. */ |
| int TRACE_SENDS = 0x00000001; |
| /** Tracing enabled for JDWP packets received from target VM. */ |
| int TRACE_RECEIVES = 0x00000002; |
| /** Tracing enabled for internal event handling. */ |
| int TRACE_EVENTS = 0x00000004; |
| /** Tracing enabled for internal managment of reference types. */ |
| int TRACE_REFTYPES = 0x00000008; |
| /** Tracing enabled for internal management of object references. */ |
| int TRACE_OBJREFS = 0x00000010; |
| /** All tracing is enabled. */ |
| int TRACE_ALL = 0x00ffffff; |
| |
| /** |
| * Traces the activities performed by the com.sun.jdi implementation. |
| * All trace information is output to System.err. The given trace |
| * flags are used to limit the output to only the information |
| * desired. The given flags are in effect and the corresponding |
| * trace will continue until the next call to |
| * this method. |
| * <p> |
| * Output is implementation dependent and trace mode may be ignored. |
| * |
| * @param traceFlags identifies which kinds of tracing to enable. |
| */ |
| void setDebugTraceMode(int traceFlags); |
| } |
