diff options
Diffstat (limited to 'libjava/classpath/vm/reference/gnu')
5 files changed, 645 insertions, 43 deletions
diff --git a/libjava/classpath/vm/reference/gnu/classpath/Unsafe.java b/libjava/classpath/vm/reference/gnu/classpath/Unsafe.java new file mode 100644 index 00000000000..6e4ec98027f --- /dev/null +++ b/libjava/classpath/vm/reference/gnu/classpath/Unsafe.java @@ -0,0 +1,328 @@ +/* Unsafe.java - Unsafe operations needed for concurrency + Copyright (C) 2006 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package gnu.classpath; + +import java.lang.reflect.Field; + +/** + * This class should provide access to low-level operations and its + * use should be limited to trusted code. Fields can be accessed using + * memory addresses, with undefined behaviour occurring if invalid memory + * addresses are given. + * + * @author Tom Tromey (tromey@redhat.com) + * @author Andrew John Hughes (gnu_andrew@member.fsf.org) + */ +public final class Unsafe +{ + // Singleton class. + private static Unsafe unsafe = new Unsafe(); + + /** + * Private default constructor to prevent creation of an arbitrary + * number of instances. + */ + private Unsafe() + { + } + + /** + * Retrieve the singleton instance of <code>Unsafe</code>. The calling + * method should guard this instance from untrusted code, as it provides + * access to low-level operations such as direct memory access. + * + * @throws SecurityException if a security manager exists and prevents + * access to the system properties. + */ + public static Unsafe getUnsafe() + { + SecurityManager sm = System.getSecurityManager(); + if (sm != null) + sm.checkPropertiesAccess(); + return unsafe; + } + + /** + * Returns the memory address offset of the given static field. + * The offset is merely used as a means to access a particular field + * in the other methods of this class. The value is unique to the given + * field and the same value should be returned on each subsequent call. + * + * @param field the field whose offset should be returned. + * @return the offset of the given field. + */ + public native long objectFieldOffset(Field field); + + /** + * Compares the value of the integer field at the specified offset + * in the supplied object with the given expected value, and updates + * it if they match. The operation of this method should be atomic, + * thus providing an uninterruptible way of updating an integer field. + * + * @param obj the object containing the field to modify. + * @param offset the offset of the integer field within <code>obj</code>. + * @param expect the expected value of the field. + * @param update the new value of the field if it equals <code>expect</code>. + * @return true if the field was changed. + */ + public native boolean compareAndSwapInt(Object obj, long offset, + int expect, int update); + + /** + * Compares the value of the long field at the specified offset + * in the supplied object with the given expected value, and updates + * it if they match. The operation of this method should be atomic, + * thus providing an uninterruptible way of updating a long field. + * + * @param obj the object containing the field to modify. + * @param offset the offset of the long field within <code>obj</code>. + * @param expect the expected value of the field. + * @param update the new value of the field if it equals <code>expect</code>. + * @return true if the field was changed. + */ + public native boolean compareAndSwapLong(Object obj, long offset, + long expect, long update); + + /** + * Compares the value of the object field at the specified offset + * in the supplied object with the given expected value, and updates + * it if they match. The operation of this method should be atomic, + * thus providing an uninterruptible way of updating an object field. + * + * @param obj the object containing the field to modify. + * @param offset the offset of the object field within <code>obj</code>. + * @param expect the expected value of the field. + * @param update the new value of the field if it equals <code>expect</code>. + * @return true if the field was changed. + */ + public native boolean compareAndSwapObject(Object obj, long offset, + Object expect, Object update); + + /** + * Sets the value of the integer field at the specified offset in the + * supplied object to the given value. This is an ordered or lazy + * version of <code>putIntVolatile(Object,long,int)</code>, which + * doesn't guarantee the immediate visibility of the change to other + * threads. It is only really useful where the integer field is + * <code>volatile</code>, and is thus expected to change unexpectedly. + * + * @param obj the object containing the field to modify. + * @param offset the offset of the integer field within <code>obj</code>. + * @param value the new value of the field. + * @see #putIntVolatile(Object,long,int) + */ + public native void putOrderedInt(Object obj, long offset, int value); + + /** + * Sets the value of the long field at the specified offset in the + * supplied object to the given value. This is an ordered or lazy + * version of <code>putLongVolatile(Object,long,long)</code>, which + * doesn't guarantee the immediate visibility of the change to other + * threads. It is only really useful where the long field is + * <code>volatile</code>, and is thus expected to change unexpectedly. + * + * @param obj the object containing the field to modify. + * @param offset the offset of the long field within <code>obj</code>. + * @param value the new value of the field. + * @see #putLongVolatile(Object,long,long) + */ + public native void putOrderedLong(Object obj, long offset, long value); + + /** + * Sets the value of the object field at the specified offset in the + * supplied object to the given value. This is an ordered or lazy + * version of <code>putObjectVolatile(Object,long,Object)</code>, which + * doesn't guarantee the immediate visibility of the change to other + * threads. It is only really useful where the object field is + * <code>volatile</code>, and is thus expected to change unexpectedly. + * + * @param obj the object containing the field to modify. + * @param offset the offset of the object field within <code>obj</code>. + * @param value the new value of the field. + */ + public native void putOrderedObject(Object obj, long offset, Object value); + + /** + * Sets the value of the integer field at the specified offset in the + * supplied object to the given value, with volatile store semantics. + * + * @param obj the object containing the field to modify. + * @param offset the offset of the integer field within <code>obj</code>. + * @param value the new value of the field. + */ + public native void putIntVolatile(Object obj, long offset, int value); + + /** + * Retrieves the value of the integer field at the specified offset in the + * supplied object with volatile load semantics. + * + * @param obj the object containing the field to read. + * @param offset the offset of the integer field within <code>obj</code>. + */ + public native int getIntVolatile(Object obj, long offset); + + /** + * Sets the value of the long field at the specified offset in the + * supplied object to the given value, with volatile store semantics. + * + * @param obj the object containing the field to modify. + * @param offset the offset of the long field within <code>obj</code>. + * @param value the new value of the field. + * @see #putLong(Object,long,long) + */ + public native void putLongVolatile(Object obj, long offset, long value); + + /** + * Sets the value of the long field at the specified offset in the + * supplied object to the given value. + * + * @param obj the object containing the field to modify. + * @param offset the offset of the long field within <code>obj</code>. + * @param value the new value of the field. + * @see #putLongVolatile(Object,long,long) + */ + public native void putLong(Object obj, long offset, long value); + + /** + * Retrieves the value of the long field at the specified offset in the + * supplied object with volatile load semantics. + * + * @param obj the object containing the field to read. + * @param offset the offset of the long field within <code>obj</code>. + * @see #getLong(Object,long) + */ + public native long getLongVolatile(Object obj, long offset); + + /** + * Retrieves the value of the long field at the specified offset in the + * supplied object. + * + * @param obj the object containing the field to read. + * @param offset the offset of the long field within <code>obj</code>. + * @see #getLongVolatile(Object,long) + */ + public native long getLong(Object obj, long offset); + + /** + * Sets the value of the object field at the specified offset in the + * supplied object to the given value, with volatile store semantics. + * + * @param obj the object containing the field to modify. + * @param offset the offset of the object field within <code>obj</code>. + * @param value the new value of the field. + * @see #putObject(Object,long,Object) + */ + public native void putObjectVolatile(Object obj, long offset, Object value); + + /** + * Sets the value of the object field at the specified offset in the + * supplied object to the given value. + * + * @param obj the object containing the field to modify. + * @param offset the offset of the object field within <code>obj</code>. + * @param value the new value of the field. + * @see #putObjectVolatile(Object,long,Object) + */ + public native void putObject(Object obj, long offset, Object value); + + /** + * Retrieves the value of the object field at the specified offset in the + * supplied object with volatile load semantics. + * + * @param obj the object containing the field to read. + * @param offset the offset of the object field within <code>obj</code>. + */ + public native Object getObjectVolatile(Object obj, long offset); + + /** + * Returns the offset of the first element for a given array class. + * To access elements of the array class, this value may be used along + * with that returned by + * <a href="#arrayIndexScale"><code>arrayIndexScale</code></a>, + * if non-zero. + * + * @param arrayClass the class for which the first element's address should + * be obtained. + * @return the offset of the first element of the array class. + * @see #arrayIndexScale(Class) + */ + public native int arrayBaseOffset(Class arrayClass); + + /** + * Returns the scale factor used for addressing elements of the supplied + * array class. Where a suitable scale factor can not be returned (e.g. + * for primitive types), zero should be returned. The returned value + * can be used with + * <a href="#arrayBaseOffset"><code>arrayBaseOffset</code></a> + * to access elements of the class. + * + * @param arrayClass the class whose scale factor should be returned. + * @return the scale factor, or zero if not supported for this array class. + */ + public native int arrayIndexScale(Class arrayClass); + + /** + * Releases the block on a thread created by + * <a href="#park"><code>park</code></a>. This method can also be used + * to terminate a blockage caused by a prior call to <code>park</code>. + * This operation is unsafe, as the thread must be guaranteed to be + * live. This is true of Java, but not native code. + * + * @param thread the thread to unblock. + */ + public native void unpark(Thread thread); + + /** + * Blocks the thread until a matching + * <a href="#unpark"><code>unpark</code></a> occurs, the thread is + * interrupted or the optional timeout expires. If an <code>unpark</code> + * call has already occurred, this also counts. A timeout value of zero + * is defined as no timeout. When <code>isAbsolute</code> is + * <code>true</code>, the timeout is in milliseconds relative to the + * epoch. Otherwise, the value is the number of nanoseconds which must + * occur before timeout. This call may also return spuriously (i.e. + * for no apparent reason). + * + * @param isAbsolute true if the timeout is specified in milliseconds from + * the epoch. + * @param time either the number of nanoseconds to wait, or a time in + * milliseconds from the epoch to wait for. + */ + public native void park(boolean isAbsolute, long time); + +} diff --git a/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMIdManager.java b/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMIdManager.java index 6a8be10145f..8d423e9b0d6 100644 --- a/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMIdManager.java +++ b/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMIdManager.java @@ -48,11 +48,9 @@ import gnu.classpath.jdwp.id.*; import java.lang.ref.Reference; import java.lang.ref.ReferenceQueue; import java.lang.ref.SoftReference; -import java.io.IOException; import java.nio.ByteBuffer; import java.util.HashMap; import java.util.Hashtable; -import java.util.Iterator; /** * This class manages objects and referencetypes that are reported @@ -111,7 +109,7 @@ public class VMIdManager /** * Returns a new id for the given object * - * @param object the object for which an id is desired + * @param obj SoftReference of the object for which an id is desired * @returns a suitable object id */ public static ObjectId newObjectId (SoftReference obj) @@ -171,7 +169,7 @@ public class VMIdManager /** * Returns a new reference type id for the given class * - * @param clazz the <code>Class</code> for which an id is desired + * @param ref SoftReference to the desired type * @returns a suitable reference type id or null when the * reference is cleared. */ diff --git a/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMMethod.java b/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMMethod.java new file mode 100644 index 00000000000..d345bc1b515 --- /dev/null +++ b/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMMethod.java @@ -0,0 +1,178 @@ +/* VMMethod.java -- a method in a virtual machine + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.classpath.jdwp; + +import java.io.DataOutputStream; +import java.io.IOException; +import java.nio.ByteBuffer; + +import gnu.classpath.jdwp.exception.JdwpException; +import gnu.classpath.jdwp.util.LineTable; +import gnu.classpath.jdwp.util.VariableTable; + +/** + * This class is really an amalgamation of two classes: one class + * represents a virtual machine method and the other represents + * the JDWP back-end's ID for the method. + * + * @author Keith Seitz (keiths@redhat.com) + */ +public class VMMethod +{ + /** + * Returns the size of a JDWP method ID + * @see gnu.classpath.jdwp.id.JdwpId#SIZE + */ + public static final int SIZE = 8; + + // The class in which this method is declared + private Class _class; + + // The method's ID + private long _methodId; + + /** + * Constructs a new VMMethod object. This constructor is protected + * so that only the factory methods of VMVirtualMachine can be used + * to create VMMethods. + * + * @param klass the method's containing class + * @param id method identifier, e.g., jmethodID + * @see gnu.classpath.jdwp.VMVirtualMachine#getAllClassMethods + * @see gnu.classpath.jdwp.VMVirtualMachine#getClassMethod + */ + protected VMMethod(Class klass, long id) + { + _class = klass; + _methodId = id; + } + + /** + * Returns the internal method ID for this method + */ + public long getId() + { + return _methodId; + } + + /** + * Returns the method's declaring class + */ + public Class getDeclaringClass() + { + return _class; + } + + /** + * Returns the name of this method + */ + public native String getName(); + + /** + * Returns the signature of this method + */ + public native String getSignature(); + + /** + * Returns the method's modifier flags + */ + public native int getModifiers(); + + /** + * "Returns line number information for the method, if present. The line + * table maps source line numbers to the initial code index of the line. + * The line table is ordered by code index (from lowest to highest). The + * line number information is constant unless a new class definition is + * installed using RedefineClasses." + * + * @return the line table + * @throws JdwpException + */ + public native LineTable getLineTable() + throws JdwpException; + + /** + * "Returns variable information for the method. The variable table + * includes arguments and locals declared within the method. For instance + * methods, the "this" reference is included in the table. Also, synthetic + * variables may be present." + * + * @return the variable table + * @throws JdwpException + */ + public native VariableTable getVariableTable() + throws JdwpException; + + /** + * Returns a string representation of this method (not + * required but nice for debugging). + */ + public String toString() + { + return getDeclaringClass().getName() + "." + getName(); + } + + /** + * Writes the method's ID to the output stream + * + * @param ostream the output stream to which to write + * @throws IOException for any errors writing to the stream + * @see gnu.classpath.jdwp.id.JdwpId#write + */ + public void writeId(DataOutputStream ostream) + throws IOException + { + ostream.writeLong(getId()); + } + + /** + * Returns a VMMethod from the ID in the byte buffer + * + * @param klass the method's declaring class + * @param bb a ByteBuffer containing the method's ID + * @throws JdwpException for any errors creating the method + * @throws IOException for any errors reading from the buffer + */ + public static VMMethod readId(Class klass, ByteBuffer bb) + throws JdwpException, IOException + { + return VMVirtualMachine.getClassMethod(klass, bb.getLong()); + } +} diff --git a/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMVirtualMachine.java b/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMVirtualMachine.java index aa285cb58a6..d8616063d19 100644 --- a/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMVirtualMachine.java +++ b/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMVirtualMachine.java @@ -1,7 +1,7 @@ /* VMVirtualMachine.java -- A reference implementation of a JDWP virtual machine - Copyright (C) 2005 Free Software Foundation + Copyright (C) 2005, 2006 Free Software Foundation This file is part of GNU Classpath. @@ -42,16 +42,9 @@ exception statement from your version. */ package gnu.classpath.jdwp; import gnu.classpath.jdwp.event.EventRequest; +import gnu.classpath.jdwp.exception.InvalidMethodException; import gnu.classpath.jdwp.exception.JdwpException; -import gnu.classpath.jdwp.exception.InvalidClassException; -import gnu.classpath.jdwp.exception.InvalidObjectException; -import gnu.classpath.jdwp.id.ObjectId; -import gnu.classpath.jdwp.id.ReferenceTypeId; -import gnu.classpath.jdwp.util.LineTable; import gnu.classpath.jdwp.util.MethodResult; -import gnu.classpath.jdwp.util.VariableTable; - -import java.io.IOException; import java.lang.reflect.Method; import java.nio.ByteBuffer; import java.util.ArrayList; @@ -80,7 +73,7 @@ public class VMVirtualMachine { // Our JDWP thread group -- don't suspend any of those threads Thread current = Thread.currentThread (); - ThreadGroup jdwpGroup = current.getThreadGroup (); + ThreadGroup jdwpGroup = Jdwp.getDefault().getJdwpThreadGroup(); // Find the root ThreadGroup ThreadGroup group = jdwpGroup; @@ -112,7 +105,8 @@ public class VMVirtualMachine } // Now suspend the current thread - suspendThread (current); + if (current.getThreadGroup() != jdwpGroup) + suspendThread (current); } /** @@ -197,6 +191,29 @@ public class VMVirtualMachine public static native int getClassStatus (Class clazz) throws JdwpException; + /** + * Returns all of the methods defined in the given class. This + * includes all methods, constructors, and class initializers. + * + * @param klass the class whose methods are desired + * @return an array of virtual machine methods + */ + public static native VMMethod[] getAllClassMethods (Class klass) + { return null; } + + /** + * A factory method for getting valid virtual machine methods + * which may be passed to/from the debugger. + * + * @param klass the class in which the method is defined + * @param id the ID of the desired method + * @return the desired internal representation of the method + * @throws InvalidMethodException if the method is not defined + * in the class + * @throws JdwpException for any other error + */ + public static native VMMethod getClassMethod(Class klass, long id) + { return null; } /** * Returns the thread's call stack @@ -206,7 +223,7 @@ public class VMVirtualMachine * @param length number of frames to return (-1 for all frames) * @return a list of frames */ - public static native ArrayList getFrames (Thread thread, int strart, + public static native ArrayList getFrames (Thread thread, int start, int length) throws JdwpException; @@ -272,33 +289,6 @@ public class VMVirtualMachine throws JdwpException; /** - * "Returns variable information for the method. The variable table - * includes arguments and locals declared within the method. For instance - * methods, the "this" reference is included in the table. Also, synthetic - * variables may be present." - * - * @param clazz the class in which the method is defined - * @param method the method for which variable information is desired - * @return a result object containing the information - */ - public static native VariableTable getVarTable (Class clazz, Method method) - throws JdwpException; - - /** - * "Returns line number information for the method, if present. The line - * table maps source line numbers to the initial code index of the line. - * The line table is ordered by code index (from lowest to highest). The - * line number information is constant unless a new class definition is - * installed using RedefineClasses." - * - * @param clazz the class in which the method is defined - * @param method the method whose line table is desired - * @return a result object containing the line table - */ - public static native LineTable getLineTable (Class clazz, Method method) - throws JdwpException; - - /** * "Returns the name of source file in which a reference type was declared" * * @param clazz the class for which to return a source file diff --git a/libjava/classpath/vm/reference/gnu/java/lang/VMInstrumentationImpl.java b/libjava/classpath/vm/reference/gnu/java/lang/VMInstrumentationImpl.java new file mode 100644 index 00000000000..eee94702d35 --- /dev/null +++ b/libjava/classpath/vm/reference/gnu/java/lang/VMInstrumentationImpl.java @@ -0,0 +1,108 @@ +/* VMInstrumentationImpl.java -- interface for the GNU implementation + of InstrumentationImpl + Copyright (C) 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.java.lang; + +import java.lang.instrument.ClassDefinition; +import java.lang.instrument.Instrumentation; + +/** + * @author Nicolas Geoffray (nicolas.geoffray@menlina.com) + * @since 1.5 + */ +final class VMInstrumentationImpl +{ + + /** + * Returns if the current JVM supports class redefinition + * + * @return true if the current JVM supports class redefinition + */ + static native boolean isRedefineClassesSupported(); + + /** + * Redefines classes given as parameters. The method has to call + * the callTransformers from InstrumentationImpl + * + * @param inst an instrumentation object + * @param definitions an array of bytecode<->class correspondance + * + * @throws ClassNotFoundException if a class cannot be found + * @throws UnmodifiableClassException if a class cannot be modified + * @throws UnsupportedOperationException if the JVM does not support + * redefinition or the redefinition made unsupported changes + * @throws ClassFormatError if a class file is not valid + * @throws NoClassDefFoundError if a class name is not equal to the name + * in the class file specified + * @throws UnsupportedClassVersionError if the class file version numbers + * are unsupported + * @throws ClassCircularityError if circularity occured with the new + * classes + * @throws LinkageError if a linkage error occurs + */ + static native void redefineClasses(Instrumentation inst, + ClassDefinition[] definitions); + + /** + * Get all the classes loaded by the JVM. + * + * @return an array containing all the classes loaded by the JVM. The array + * is empty if no class is loaded. + */ + static native Class[] getAllLoadedClasses(); + + /** + * Get all the classes loaded by a given class loader + * + * @param loader the loader + * + * @return an array containing all the classes loaded by the given loader. + * The array is empty if no class was loaded by the loader. + */ + static native Class[] getInitiatedClasses(ClassLoader loader); + + /** + * Get the size of an object. The object is not null + * + * @param objectToSize the object + * @return the size of the object + */ + static native long getObjectSize(Object objectToSize); + +} |