From ac1ed908de999523efc36f38e69bca1aadfe0808 Mon Sep 17 00:00:00 2001 From: Mark Wielaard Date: Mon, 14 Aug 2006 23:12:35 +0000 Subject: Imported GNU Classpath 0.92 2006-08-14 Mark Wielaard Imported GNU Classpath 0.92 * HACKING: Add more importing hints. Update automake version requirement. * configure.ac (gconf-peer): New enable AC argument. Add --disable-gconf-peer and --enable-default-preferences-peer to classpath configure when gconf is disabled. * scripts/makemake.tcl: Set gnu/java/util/prefs/gconf and gnu/java/awt/dnd/peer/gtk to bc. Classify gnu/java/security/Configuration.java as generated source file. * gnu/java/lang/management/VMGarbageCollectorMXBeanImpl.java, gnu/java/lang/management/VMMemoryPoolMXBeanImpl.java, gnu/java/lang/management/VMClassLoadingMXBeanImpl.java, gnu/java/lang/management/VMRuntimeMXBeanImpl.java, gnu/java/lang/management/VMMemoryManagerMXBeanImpl.java, gnu/java/lang/management/VMThreadMXBeanImpl.java, gnu/java/lang/management/VMMemoryMXBeanImpl.java, gnu/java/lang/management/VMCompilationMXBeanImpl.java: New VM stub classes. * java/lang/management/VMManagementFactory.java: Likewise. * java/net/VMURLConnection.java: Likewise. * gnu/java/nio/VMChannel.java: Likewise. * java/lang/Thread.java (getState): Add stub implementation. * java/lang/Class.java (isEnum): Likewise. * java/lang/Class.h (isEnum): Likewise. * gnu/awt/xlib/XToolkit.java (getClasspathTextLayoutPeer): Removed. * javax/naming/spi/NamingManager.java: New override for StackWalker functionality. * configure, sources.am, Makefile.in, gcj/Makefile.in, include/Makefile.in, testsuite/Makefile.in: Regenerated. From-SVN: r116139 --- .../vm/reference/gnu/classpath/Unsafe.java | 328 --------------------- .../gnu/classpath/jdwp/VMVirtualMachine.java | 4 +- .../lang/management/VMClassLoadingMXBeanImpl.java | 89 ++++++ .../lang/management/VMCompilationMXBeanImpl.java | 66 +++++ .../management/VMGarbageCollectorMXBeanImpl.java | 80 +++++ .../java/lang/management/VMMemoryMXBeanImpl.java | 109 +++++++ .../lang/management/VMMemoryManagerMXBeanImpl.java | 95 ++++++ .../lang/management/VMMemoryPoolMXBeanImpl.java | 195 ++++++++++++ .../java/lang/management/VMRuntimeMXBeanImpl.java | 89 ++++++ .../java/lang/management/VMThreadMXBeanImpl.java | 207 +++++++++++++ .../vm/reference/gnu/java/nio/VMChannel.java | 197 +++++++++++++ libjava/classpath/vm/reference/java/io/VMFile.java | 16 +- .../vm/reference/java/lang/VMClassLoader.java | 8 +- .../classpath/vm/reference/java/lang/VMSystem.java | 10 +- .../classpath/vm/reference/java/lang/VMThread.java | 12 + .../java/lang/management/VMManagementFactory.java | 75 +++++ .../vm/reference/java/net/VMURLConnection.java | 79 +++++ .../classpath/vm/reference/sun/misc/Unsafe.java | 328 +++++++++++++++++++++ .../vm/reference/sun/reflect/Reflection.java | 51 ++++ .../vm/reference/sun/reflect/misc/ReflectUtil.java | 92 ++++++ 20 files changed, 1781 insertions(+), 349 deletions(-) delete mode 100644 libjava/classpath/vm/reference/gnu/classpath/Unsafe.java create mode 100644 libjava/classpath/vm/reference/gnu/java/lang/management/VMClassLoadingMXBeanImpl.java create mode 100644 libjava/classpath/vm/reference/gnu/java/lang/management/VMCompilationMXBeanImpl.java create mode 100644 libjava/classpath/vm/reference/gnu/java/lang/management/VMGarbageCollectorMXBeanImpl.java create mode 100644 libjava/classpath/vm/reference/gnu/java/lang/management/VMMemoryMXBeanImpl.java create mode 100644 libjava/classpath/vm/reference/gnu/java/lang/management/VMMemoryManagerMXBeanImpl.java create mode 100644 libjava/classpath/vm/reference/gnu/java/lang/management/VMMemoryPoolMXBeanImpl.java create mode 100644 libjava/classpath/vm/reference/gnu/java/lang/management/VMRuntimeMXBeanImpl.java create mode 100644 libjava/classpath/vm/reference/gnu/java/lang/management/VMThreadMXBeanImpl.java create mode 100644 libjava/classpath/vm/reference/gnu/java/nio/VMChannel.java create mode 100644 libjava/classpath/vm/reference/java/lang/management/VMManagementFactory.java create mode 100644 libjava/classpath/vm/reference/java/net/VMURLConnection.java create mode 100644 libjava/classpath/vm/reference/sun/misc/Unsafe.java create mode 100644 libjava/classpath/vm/reference/sun/reflect/Reflection.java create mode 100644 libjava/classpath/vm/reference/sun/reflect/misc/ReflectUtil.java (limited to 'libjava/classpath/vm/reference') diff --git a/libjava/classpath/vm/reference/gnu/classpath/Unsafe.java b/libjava/classpath/vm/reference/gnu/classpath/Unsafe.java deleted file mode 100644 index 6e4ec98..0000000 --- a/libjava/classpath/vm/reference/gnu/classpath/Unsafe.java +++ /dev/null @@ -1,328 +0,0 @@ -/* 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 Unsafe. 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 obj. - * @param expect the expected value of the field. - * @param update the new value of the field if it equals expect. - * @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 obj. - * @param expect the expected value of the field. - * @param update the new value of the field if it equals expect. - * @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 obj. - * @param expect the expected value of the field. - * @param update the new value of the field if it equals expect. - * @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 putIntVolatile(Object,long,int), which - * doesn't guarantee the immediate visibility of the change to other - * threads. It is only really useful where the integer field is - * volatile, 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 obj. - * @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 putLongVolatile(Object,long,long), which - * doesn't guarantee the immediate visibility of the change to other - * threads. It is only really useful where the long field is - * volatile, 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 obj. - * @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 putObjectVolatile(Object,long,Object), which - * doesn't guarantee the immediate visibility of the change to other - * threads. It is only really useful where the object field is - * volatile, 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 obj. - * @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 obj. - * @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 obj. - */ - 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 obj. - * @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 obj. - * @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 obj. - * @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 obj. - * @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 obj. - * @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 obj. - * @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 obj. - */ - 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 - * arrayIndexScale, - * 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 - * arrayBaseOffset - * 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 - * park. This method can also be used - * to terminate a blockage caused by a prior call to park. - * 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 - * unpark occurs, the thread is - * interrupted or the optional timeout expires. If an unpark - * call has already occurred, this also counts. A timeout value of zero - * is defined as no timeout. When isAbsolute is - * true, 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/VMVirtualMachine.java b/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMVirtualMachine.java index d861606..d4985bf 100644 --- a/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMVirtualMachine.java +++ b/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMVirtualMachine.java @@ -199,7 +199,7 @@ public class VMVirtualMachine * @return an array of virtual machine methods */ public static native VMMethod[] getAllClassMethods (Class klass) - { return null; } + throws JdwpException; /** * A factory method for getting valid virtual machine methods @@ -213,7 +213,7 @@ public class VMVirtualMachine * @throws JdwpException for any other error */ public static native VMMethod getClassMethod(Class klass, long id) - { return null; } + throws JdwpException; /** * Returns the thread's call stack diff --git a/libjava/classpath/vm/reference/gnu/java/lang/management/VMClassLoadingMXBeanImpl.java b/libjava/classpath/vm/reference/gnu/java/lang/management/VMClassLoadingMXBeanImpl.java new file mode 100644 index 0000000..c1c7d13 --- /dev/null +++ b/libjava/classpath/vm/reference/gnu/java/lang/management/VMClassLoadingMXBeanImpl.java @@ -0,0 +1,89 @@ +/* VMClassLoadingMXBeanImpl.java - VM impl. of a class loading bean + 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.java.lang.management; + +/** + * Provides access to information about the class loading + * behaviour of the current invocation of the virtual + * machine. Instances of this bean are obtained by calling + * {@link ManagementFactory#getClassLoadingMXBean()}. + * + * @author Andrew John Hughes (gnu_andrew@member.fsf.org) + * @since 1.5 + */ +final class VMClassLoadingMXBeanImpl +{ + + /** + * Returns the number of classes currently loaded by + * the virtual machine. + * + * @return the number of loaded classes. + */ + static native int getLoadedClassCount(); + + /** + * Returns the number of classes that have been unloaded + * by the virtual machine since it was started. + * + * @return the number of unloaded classes. + */ + static native long getUnloadedClassCount(); + + /** + * Returns true if the virtual machine will emit additional + * information when classes are loaded and unloaded. The + * format of the output is left up to the virtual machine. + * + * @return true if verbose class loading output is on. + */ + static native boolean isVerbose(); + + /** + * Turns on or off the emission of additional information + * when classes are loaded and unloaded. The format of the + * output is left up to the virtual machine. This method + * may be called by multiple threads concurrently, but there + * is only one global setting of verbosity that is affected. + * + * @param verbose the new setting for verbose class loading + * output. + */ + static native void setVerbose(boolean verbose); + +} diff --git a/libjava/classpath/vm/reference/gnu/java/lang/management/VMCompilationMXBeanImpl.java b/libjava/classpath/vm/reference/gnu/java/lang/management/VMCompilationMXBeanImpl.java new file mode 100644 index 0000000..b9b5bbc --- /dev/null +++ b/libjava/classpath/vm/reference/gnu/java/lang/management/VMCompilationMXBeanImpl.java @@ -0,0 +1,66 @@ +/* VMCompilationMXBeanImpl.java - VM implementation of a compilation bean + 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.java.lang.management; + +/** + * Provides access to information about the JIT + * compiler of the virtual machine, if one exists. + * Instances of this bean are obtained by calling + * {@link ManagementFactory#getCompilationMXBean()}, + * if this is the case. + * + * @author Andrew John Hughes (gnu_andrew@member.fsf.org) + * @since 1.5 + */ +final class VMCompilationMXBeanImpl +{ + + /** + * Returns the number of milliseconds the JIT + * compiler has spent compiling Java bytecode + * to native machine code. This is only called + * if a JIT compiler exists and the + * gnu.java.lang.management.CompilationTimeSupport + * property has been set. + * + * @return the number of milliseconds spent + * compiling. + */ + static native long getTotalCompilationTime(); + +} diff --git a/libjava/classpath/vm/reference/gnu/java/lang/management/VMGarbageCollectorMXBeanImpl.java b/libjava/classpath/vm/reference/gnu/java/lang/management/VMGarbageCollectorMXBeanImpl.java new file mode 100644 index 0000000..2a20284 --- /dev/null +++ b/libjava/classpath/vm/reference/gnu/java/lang/management/VMGarbageCollectorMXBeanImpl.java @@ -0,0 +1,80 @@ +/* VMGarbageCollectorMXBeanImpl.java - VM interface for a GC bean + 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.java.lang.management; + +/** + * Provides access to information about the garbage collectors + * of the virtual machine. Garbage collectors are responsible + * for removing unreferenced objects from memory. A garbage + * collector is a type of memory manager, so this interface + * is combined with that of generic memory managers. An instance + * of this bean for each garbage collector is obtained by calling + * {@link ManagementFactory#getGarbageCollectorMXBeans()}. + * + * @author Andrew John Hughes (gnu_andrew@member.fsf.org) + * @since 1.5 + */ +final class VMGarbageCollectorMXBeanImpl +{ + + /** + * Returns the number of collections the garbage collector + * represented by this bean has made. -1 is returned if the + * collection count is undefined. + * + * @param name the name of the garbage collector. + * @return the number of collections made, or -1 if this is + * undefined. + */ + static native long getCollectionCount(String name); + + /** + * Returns the accumulated number of milliseconds this garbage + * collector has spent freeing the memory used by unreferenced + * objects. -1 is returned if the collection time is undefined. + * Note that the accumulated time may not change, even when the + * collection count increases, if the time taken is sufficiently + * short; this depends on the resolution of the timer used. + * + * @param name the name of the garbage collector. + * @return the accumulated number of milliseconds spent collecting, + * or -1 if this is undefined. + */ + static native long getCollectionTime(String name); + +} diff --git a/libjava/classpath/vm/reference/gnu/java/lang/management/VMMemoryMXBeanImpl.java b/libjava/classpath/vm/reference/gnu/java/lang/management/VMMemoryMXBeanImpl.java new file mode 100644 index 0000000..193e335 --- /dev/null +++ b/libjava/classpath/vm/reference/gnu/java/lang/management/VMMemoryMXBeanImpl.java @@ -0,0 +1,109 @@ +/* VMMemoryMXBeanImpl.java - VM impl. of a memory bean + 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.java.lang.management; + +import java.lang.management.MemoryUsage; + +/** + * Provides access to information about the memory + * management of the current invocation of the virtual + * machine. Instances of this bean are obtained by calling + * {@link ManagementFactory#getMemoryMXBean()}. + * + * @author Andrew John Hughes (gnu_andrew@member.fsf.org) + * @since 1.5 + */ +final class VMMemoryMXBeanImpl +{ + + /** + * Returns an instance of {@link java.lang.management.MemoryUsage} + * with appropriate initial, used, committed and maximum values + * for the heap. By default, this uses the methods of + * {@link java.lang.Runtime} to provide some of the values. + * + * @return an {@link java.lang.management.MemoryUsage} instance + * for the heap. + */ + static MemoryUsage getHeapMemoryUsage() + { + Runtime runtime = Runtime.getRuntime(); + long totalMem = runtime.totalMemory(); + return new MemoryUsage(-1, totalMem - runtime.freeMemory(), + totalMem, runtime.maxMemory()); + } + + /** + * Returns an instance of {@link java.lang.management.MemoryUsage} + * with appropriate initial, used, committed and maximum values + * for non-heap memory. + * + * @return an {@link java.lang.management.MemoryUsage} instance + * for non-heap memory. + */ + static native MemoryUsage getNonHeapMemoryUsage(); + + /** + * Returns the number of objects ready to be garbage collected. + * + * @return the number of finalizable objects. + */ + static native int getObjectPendingFinalizationCount(); + + /** + * Returns true if the virtual machine will emit additional + * information when memory is allocated and deallocated. The + * format of the output is left up to the virtual machine. + * + * @return true if verbose class loading output is on. + */ + static native boolean isVerbose(); + + /** + * Turns on or off the emission of additional information + * when memory is allocated and deallocated. The format of the + * output is left up to the virtual machine. This method + * may be called by multiple threads concurrently, but there + * is only one global setting of verbosity that is affected. + * + * @param verbose the new setting for verbose class loading + * output. + */ + static native void setVerbose(boolean verbose); + +} diff --git a/libjava/classpath/vm/reference/gnu/java/lang/management/VMMemoryManagerMXBeanImpl.java b/libjava/classpath/vm/reference/gnu/java/lang/management/VMMemoryManagerMXBeanImpl.java new file mode 100644 index 0000000..0a4204a --- /dev/null +++ b/libjava/classpath/vm/reference/gnu/java/lang/management/VMMemoryManagerMXBeanImpl.java @@ -0,0 +1,95 @@ +/* VMMemoryManagerMXBeanImpl.java - VM interface for a memory manager bean + 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.java.lang.management; + +import java.lang.management.ManagementFactory; +import java.lang.management.MemoryPoolMXBean; + +import java.util.ArrayList; +import java.util.Iterator; +import java.util.List; + +/** + * Provides access to information about the memory managers + * of the virtual machine. An instance of this bean for each + * memory manager is obtained by calling + * {@link ManagementFactory#getMemoryManagerMXBeans()}. + * + * @author Andrew John Hughes (gnu_andrew@member.fsf.org) + * @since 1.5 + */ +final class VMMemoryManagerMXBeanImpl +{ + + /** + * Returns an array containing the names of the memory pools + * this memory manager manages. + * + * @param name the name of the memory manager. + * @return an array containing the name of each memory pool + * this manager is responsible for. + */ + static String[] getMemoryPoolNames(String name) + { + List managedPools = new ArrayList(); + Iterator beans = ManagementFactory.getMemoryPoolMXBeans().iterator(); + while (beans.hasNext()) + { + MemoryPoolMXBean bean = (MemoryPoolMXBean) beans.next(); + String[] managers = bean.getMemoryManagerNames(); + for (int a = 0; a < managers.length; ++a) + if (managers[a].equals(name)) + { + managedPools.add(bean.getName()); + break; + } + } + return (String[]) managedPools.toArray(new String[managedPools.size()]); + } + + /** + * Returns true if this memory manager is still valid. A memory + * manager becomes invalid when it is removed by the virtual machine + * and no longer used. + * + * @param name the name of the memory manager. + * @return true if this memory manager is valid. + */ + static native boolean isValid(String name); + +} diff --git a/libjava/classpath/vm/reference/gnu/java/lang/management/VMMemoryPoolMXBeanImpl.java b/libjava/classpath/vm/reference/gnu/java/lang/management/VMMemoryPoolMXBeanImpl.java new file mode 100644 index 0000000..723d4e8 --- /dev/null +++ b/libjava/classpath/vm/reference/gnu/java/lang/management/VMMemoryPoolMXBeanImpl.java @@ -0,0 +1,195 @@ +/* MemoryPoolMXBeanImpl.java - VM interface for memory pool beans + 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.java.lang.management; + +import java.lang.management.MemoryUsage; + +/** + * Provides access to information on the memory resources or + * pools used by the current invocation of the virtual machine. + * + * @author Andrew John Hughes (gnu_andrew@member.fsf.org) + * @since 1.5 + */ +final class VMMemoryPoolMXBeanImpl +{ + + /** + * Returns memory usage statistics for the specified pool + * just after a best-effort attempt to free memory. This + * is valid only for certain garbage collectors. + * + * @param name the name of the pool to obtain statistics on. + * @return a {@link java.lang.management.MemoryUsage} object + * containing the statistics or null + * if this pool does not support such statistics. + */ + static native MemoryUsage getCollectionUsage(String name); + + /** + * Returns the collection usage threshold for the specified pool. + * This is only called if this functionality is supported + * by the virtual machine (i.e. the appropriate property, + * gnu.java.lang.management.CollectionUsageThresholdSupport, + * is defined). The value is initially zero. + * + * @param name the name of the pool to obtain statistics on. + * @return the collection usage threshold. + */ + static native long getCollectionUsageThreshold(String name); + + /** + * Returns the number of times the collection usage threshold + * has been met or exceeded by the specified pool. + * This is only called if this functionality is supported + * by the virtual machine (i.e. the appropriate property, + * gnu.java.lang.management.CollectionUsageThresholdSupport, + * is defined). + * + * @param name the name of the pool to obtain statistics on. + * @return the collection usage threshold count. + */ + static native long getCollectionUsageThresholdCount(String name); + + /** + * Returns an array of names of memory managers which manage + * the specified pool. + * + * @param name the name of the pool to obtain statistics on. + * @return a list of memory managers for the pool. + */ + static native String[] getMemoryManagerNames(String name); + + /** + * Returns the peak usage level of the specified pool. + * This is only called if the pool is valid. + * + * @param name the name of the pool to obtain statistics on. + * @return a {@link java.lang.management.MemoryUsage} object + * containing the statistics. + */ + static native MemoryUsage getPeakUsage(String name); + + /** + * Returns the type of memory used by the specified pool. + * The value must be either "HEAP" or "NON_HEAP". + * + * @param name the name of the pool to obtain statistics on. + * @return the type of the given pool. + */ + static native String getType(String name); + + /** + * Returns the current usage level of the specified pool. + * This is only called if the pool is valid. + * + * @param name the name of the pool to obtain statistics on. + * @return a {@link java.lang.management.MemoryUsage} object + * containing the statistics. + */ + static native MemoryUsage getUsage(String name); + + /** + * Returns the usage threshold for the specified pool. + * This is only called if this functionality is supported + * by the virtual machine (i.e. the appropriate property, + * gnu.java.lang.management.UsageThresholdSupport, + * is defined). The value is initially defined by the + * virtual machine. + * + * @param name the name of the pool to obtain statistics on. + * @return the usage threshold. + */ + static native long getUsageThreshold(String name); + + /** + * Returns the number of times the usage threshold + * has been met or exceeded by the specified pool. + * This is only called if this functionality is supported + * by the virtual machine (i.e. the appropriate property, + * gnu.java.lang.management.UsageThresholdSupport, + * is defined). + * + * @param name the name of the pool to obtain statistics on. + * @return the usage threshold count. + */ + static native long getUsageThresholdCount(String name); + + /** + * Returns true if the specified pool is still valid i.e. + * it is still in use by the virtual machine. + * + * @param name the name of the pool to check the validity of. + * @return true if the pool is valid. + */ + static native boolean isValid(String name); + + /** + * Resets the peak usage level to the current usage level for + * the specified pool. + * + * @param name the name of the pool to reset the peak usage of. + */ + static native void resetPeakUsage(String name); + + /** + * Sets the collection usage threshold for the specified + * pool to the supplied value. + * This is only called if this functionality is supported + * by the virtual machine (i.e. the appropriate property, + * gnu.java.lang.management.CollectionUsageThresholdSupport, + * is defined). + * + * @param name the name of the pool to set the threshold of. + * @param threshold the new threshold level. + */ + static native void setCollectionUsageThreshold(String name, long threshold); + + /** + * Sets the usage threshold for the specified pool to the supplied value. + * This is only called if this functionality is supported + * by the virtual machine (i.e. the appropriate property, + * gnu.java.lang.management.UsageThresholdSupport, + * is defined). + * + * @param name the name of the pool to set the threshold of. + * @param threshold the new threshold level. + */ + static native void setUsageThreshold(String name, long threshold); + +} diff --git a/libjava/classpath/vm/reference/gnu/java/lang/management/VMRuntimeMXBeanImpl.java b/libjava/classpath/vm/reference/gnu/java/lang/management/VMRuntimeMXBeanImpl.java new file mode 100644 index 0000000..32a8660 --- /dev/null +++ b/libjava/classpath/vm/reference/gnu/java/lang/management/VMRuntimeMXBeanImpl.java @@ -0,0 +1,89 @@ +/* VMRuntimeMXBeanImpl.java - VM implementation of an runtime bean + 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.java.lang.management; + +import gnu.classpath.SystemProperties; + +/** + * Provides access to information about the virtual machine. + * + * @author Andrew John Hughes (gnu_andrew@member.fsf.org) + * @since 1.5 + */ +final class VMRuntimeMXBeanImpl +{ + + /** + * Returns the command-line arguments supplied + * to the virtual machine, excluding those supplied + * to main(). + * + * @return the command-line arguments. + */ + static native String[] getInputArguments(); + + /** + * Returns a developer-chosen name for the virtual + * machine, which may differ over different running + * instances of the same virtual machine binary. + * For example, this may include the particular + * process identifier used by this instance or + * the host name of the machine on which it is + * running. The intention is that this name refers + * to the precise entity that the other data supplied + * by the bean refers to, rather than the VM in general. + * + * @return the custom name of the VM. + */ + static String getName() + { + return SystemProperties.getProperty("java.vm.name") + " " + + SystemProperties.getProperty("java.vm.version"); + } + + /** + * The time in milliseconds at which the virtual + * machine was started. This method is only executed + * once (for efficency), as the value is not expected + * to change. + * + * @return the VM start time. + */ + static native long getStartTime(); + +} diff --git a/libjava/classpath/vm/reference/gnu/java/lang/management/VMThreadMXBeanImpl.java b/libjava/classpath/vm/reference/gnu/java/lang/management/VMThreadMXBeanImpl.java new file mode 100644 index 0000000..c5bcb63 --- /dev/null +++ b/libjava/classpath/vm/reference/gnu/java/lang/management/VMThreadMXBeanImpl.java @@ -0,0 +1,207 @@ +/* VMThreadMXBeanImpl.java - VM impl. of a thread bean + 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.java.lang.management; + +import java.lang.management.ThreadInfo; + +/** + * Provides access to information about the threads + * of the virtual machine. An instance of this bean is + * obtained by calling + * {@link ManagementFactory#getThreadMXBean()}. + * See {@link java.lang.management.ThreadMXBean} for + * full documentation. + * + * @author Andrew John Hughes (gnu_andrew@member.fsf.org) + * @since 1.5 + */ +final class VMThreadMXBeanImpl +{ + + /** + * Cache of how many threads were found. + */ + private static int filled; + + /** + * Returns the ids of cycles of deadlocked threads, occurring + * due to monitor ownership. + * + * @return the ids of the deadlocked threads. + */ + static native long[] findMonitorDeadlockedThreads(); + + /* This is the same as in Thread.getAllStackTraces() */ + static Thread[] getAllThreads() + { + ThreadGroup group = Thread.currentThread().getThreadGroup(); + while (group.getParent() != null) + group = group.getParent(); + int arraySize = group.activeCount(); + Thread[] threadList = new Thread[arraySize]; + filled = group.enumerate(threadList); + while (filled == arraySize) + { + arraySize *= 2; + threadList = new Thread[arraySize]; + filled = group.enumerate(threadList); + } + return threadList; + } + + /** + * Returns the id of all live threads at the time of execution. + * + * @return the live thread ids. + */ + static long[] getAllThreadIds() + { + Thread[] threadList = getAllThreads(); + long[] ids = new long[filled]; + for (int a = 0; a < filled; ++a) + ids[a] = threadList[a].getId(); + return ids; + } + + /** + * Returns the number of nanoseconds of CPU time + * the current thread has used in total. This is + * only called if this feature is enabled and + * supported. + * + * @return the nanoseconds of CPU time used by + * the current thread. + */ + static native long getCurrentThreadCpuTime(); + + /** + * Returns the number of nanoseconds of user time + * the current thread has used in total. This is + * only called if this feature is enabled and + * supported. + * + * @return the nanoseconds of user time used by + * the current thread. + */ + static native long getCurrentThreadUserTime(); + + /** + * Returns the number of live daemon threads. + * + * @return the number of live daemon threads. + */ + static int getDaemonThreadCount() + { + Thread[] threadList = getAllThreads(); + int daemonCount = 0; + for (int a = 0; a < filled; ++a) + { + if (threadList[a].isDaemon()) + ++daemonCount; + } + return daemonCount; + } + + /** + * Returns the current peak number of live threads. + * + * @return the peak number of live threads. + */ + static native int getPeakThreadCount(); + + /** + * Returns the number of live threads. + * + * @return the number of live threads. + */ + static int getThreadCount() + { + getAllThreads(); + return filled; + } + + /** + * Returns the number of nanoseconds of CPU time + * the specified thread has used in total. This is + * only called if this feature is enabled and + * supported. + * + * @param id the thread to obtain statistics on. + * @return the nanoseconds of CPU time used by + * the thread. + */ + static native long getThreadCpuTime(long id); + + /** + * Returns the {@link java.lang.management.ThreadInfo} + * which corresponds to the specified id. + * + * @param id the id of the thread. + * @param maxDepth the depth of the stack trace. + * @return the corresponding ThreadInfo. + */ + static native ThreadInfo getThreadInfoForId(long id, int maxDepth); + + /** + * Returns the number of nanoseconds of user time + * the specified thread has used in total. This is + * only called if this feature is enabled and + * supported. + * + * @param id the thread to obtain statistics on. + * @return the nanoseconds of user time used by + * the thread. + */ + static native long getThreadUserTime(long id); + + /** + * Returns the total number of threads that have + * been started over the lifetime of the virtual + * machine. + * + * @return the total number of threads started. + */ + static native long getTotalStartedThreadCount(); + + /** + * Resets the peak thread count to the current + * number of live threads. + */ + static native void resetPeakThreadCount(); + +} diff --git a/libjava/classpath/vm/reference/gnu/java/nio/VMChannel.java b/libjava/classpath/vm/reference/gnu/java/nio/VMChannel.java new file mode 100644 index 0000000..fdea8ff --- /dev/null +++ b/libjava/classpath/vm/reference/gnu/java/nio/VMChannel.java @@ -0,0 +1,197 @@ +/* VMChannel.java -- Native interface suppling channel operations. + 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 +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.nio; + +import gnu.classpath.Configuration; +import gnu.java.net.PlainSocketImpl; +import gnu.java.nio.PipeImpl.SinkChannelImpl; +import gnu.java.nio.PipeImpl.SourceChannelImpl; +import gnu.java.nio.channels.FileChannelImpl; + +import java.io.IOException; +import java.nio.ByteBuffer; + +/** + * Native interface to support configuring of channel to run in a non-blocking + * manner and support scatter/gather io operations. + * + * @author Michael Barker + * + */ +public class VMChannel +{ + private final int fd; + + private VMChannel(int fd) + { + this.fd = fd; + } + + public static VMChannel getVMChannel(PlainSocketImpl socket) + { + return new VMChannel(socket.getNativeFD()); + } + + public static VMChannel getVMChannel(SourceChannelImpl source) + { + return new VMChannel(source.getNativeFD()); + } + + public static VMChannel getVMChannel(SinkChannelImpl sink) + { + return new VMChannel(sink.getNativeFD()); + } + + public static VMChannel getVMChannel(FileChannelImpl file) + { + return new VMChannel(file.getNativeFD()); + } + + static + { + // load the shared library needed for native methods. + if (Configuration.INIT_LOAD_LIBRARY) + { + System.loadLibrary ("javanio"); + } + initIDs(); + } + + /** + * Set the file descriptor to have the required blocking + * setting. + * + * @param fd + * @param blocking + */ + public native void setBlocking(int fd, boolean blocking); + + public void setBlocking(boolean blocking) + { + setBlocking(fd, blocking); + } + + + /** + * Reads a byte buffer directly using the supplied file descriptor. + * Assumes that the buffer is a DirectBuffer. + * + * @param fd Native file descriptor to read from. + * @param dst Direct Byte Buffer to read to. + * @return Number of bytes read. + * @throws IOException If an error occurs or dst is not a direct buffers. + */ + native int read(int fd, ByteBuffer dst) + throws IOException; + + public int read(ByteBuffer dst) + throws IOException + { + return read(fd, dst); + } + + /** + * Reads into byte buffers directly using the supplied file descriptor. + * Assumes that the buffer list contains DirectBuffers. Will perform a + * scattering read. + * + * @param fd Native file descriptor to read from. + * @param dsts An array direct byte buffers. + * @param offset Index of the first buffer to read to. + * @param length The number of buffers to read to. + * @return Number of bytes read. + * @throws IOException If an error occurs or the dsts are not direct buffers. + */ + native long readScattering(int fd, ByteBuffer[] dsts, int offset, int length) + throws IOException; + + public long readScattering(ByteBuffer[] dsts, int offset, int length) + throws IOException + { + if (offset + length > dsts.length) + throw new IndexOutOfBoundsException("offset + length > dsts.length"); + + return readScattering(fd, dsts, offset, length); + } + + /** + * Writes from a direct byte bufer using the supplied file descriptor. + * Assumes the buffer is a DirectBuffer. + * + * @param fd + * @param src + * @return Number of bytes written. + * @throws IOException + */ + native int write(int fd, ByteBuffer src) + throws IOException; + + public int write(ByteBuffer src) + throws IOException + { + return write(fd, src); + } + + /** + * Writes from byte buffers directly using the supplied file descriptor. + * Assumes the that buffer list constains DirectBuffers. Will perform + * as gathering write. + * + * @param fd + * @param srcs + * @param offset + * @param length + * @return Number of bytes written. + * @throws IOException + */ + native long writeGathering(int fd, ByteBuffer[] srcs, int offset, int length) + throws IOException; + + public long writeGathering(ByteBuffer[] srcs, int offset, int length) + throws IOException + { + if (offset + length > srcs.length) + throw new IndexOutOfBoundsException("offset + length > srcs.length"); + + return writeGathering(fd, srcs, offset, length); + } + + private native static void initIDs(); + +} diff --git a/libjava/classpath/vm/reference/java/io/VMFile.java b/libjava/classpath/vm/reference/java/io/VMFile.java index 2931044..2f48aad 100644 --- a/libjava/classpath/vm/reference/java/io/VMFile.java +++ b/libjava/classpath/vm/reference/java/io/VMFile.java @@ -1,5 +1,5 @@ /* VMFile.java -- Class for methods natively accessing files - Copyright (C) 2004 Free Software Foundation, Inc. + Copyright (C) 2004, 2006 Free Software Foundation, Inc. This file is part of GNU Classpath. @@ -210,10 +210,10 @@ final class VMFile /** * This method returns a canonical representation of the pathname of - * the given path. The actual form of the canonical representation is - * different. On the GNU system, the canonical form differs from the - * absolute form in that all relative file references to "." and ".." - * are resolved and removed. + * this file. The actual form of the canonical representation is + * system-dependent. On the GNU system, conversion to canonical + * form involves the removal of redundant separators, references to + * "." and "..", and symbolic links. *

* Note that this method, unlike the other methods which return path * names, can throw an IOException. This is because native method @@ -221,9 +221,5 @@ final class VMFile * * @exception IOException If an error occurs */ - public static String toCanonicalForm(String path) throws IOException - { - // FIXME: this only works on UNIX - return PlatformHelper.toCanonicalForm(path); - } + public static native String toCanonicalForm(String path) throws IOException; } diff --git a/libjava/classpath/vm/reference/java/lang/VMClassLoader.java b/libjava/classpath/vm/reference/java/lang/VMClassLoader.java index 4caa58c..897df51 100644 --- a/libjava/classpath/vm/reference/java/lang/VMClassLoader.java +++ b/libjava/classpath/vm/reference/java/lang/VMClassLoader.java @@ -75,6 +75,10 @@ final class VMClassLoader /** packages loaded by the bootstrap class loader */ static final HashMap definedPackages = new HashMap(); + /** jars from property java.boot.class.path */ + static final HashMap bootjars = new HashMap(); + + /** * Converts the array string of native package names to * Packages. The packages are then put into the @@ -168,10 +172,6 @@ final class VMClassLoader return (URL)e.nextElement(); return null; } - - /** jars from property java.boot.class.path */ - static final HashMap bootjars = new HashMap(); - /** * Helper to get a list of resources from the bootstrap class loader. * diff --git a/libjava/classpath/vm/reference/java/lang/VMSystem.java b/libjava/classpath/vm/reference/java/lang/VMSystem.java index f96986d..bf46b27 100644 --- a/libjava/classpath/vm/reference/java/lang/VMSystem.java +++ b/libjava/classpath/vm/reference/java/lang/VMSystem.java @@ -135,7 +135,10 @@ final class VMSystem * @return the current time * @see java.util.Date */ - public static native long currentTimeMillis(); + public static long currentTimeMillis() + { + return nanoTime() / 1000000L; + } /** *

@@ -162,10 +165,7 @@ final class VMSystem * @return the time of a system timer in nanoseconds. * @since 1.5 */ - public static long nanoTime() - { - return currentTimeMillis() * 1000; - } + public static native long nanoTime(); /** * Returns a list of 'name=value' pairs representing the current environment diff --git a/libjava/classpath/vm/reference/java/lang/VMThread.java b/libjava/classpath/vm/reference/java/lang/VMThread.java index 302de6c..ff0ec68 100644 --- a/libjava/classpath/vm/reference/java/lang/VMThread.java +++ b/libjava/classpath/vm/reference/java/lang/VMThread.java @@ -446,4 +446,16 @@ final class VMThread return false; } } + + /** + * Returns the current state of the thread. + * The value must be one of "BLOCKED", "NEW", + * "RUNNABLE", "TERMINATED", "TIMED_WAITING" or + * "WAITING". + * + * @return a string corresponding to one of the + * thread enumeration states specified above. + */ + native String getState(); + } diff --git a/libjava/classpath/vm/reference/java/lang/management/VMManagementFactory.java b/libjava/classpath/vm/reference/java/lang/management/VMManagementFactory.java new file mode 100644 index 0000000..f104970 --- /dev/null +++ b/libjava/classpath/vm/reference/java/lang/management/VMManagementFactory.java @@ -0,0 +1,75 @@ +/* VMManagementFactory.java - VM interface for obtaining system beans. + 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 java.lang.management; + +/** + * Provides lists of resources required by the + * {@link java.lang.management.ManagementFactory} for + * creating beans. + * + * @author Andrew John Hughes (gnu_andrew@member.fsf.org) + * @since 1.5 + */ +final class VMManagementFactory +{ + + /** + * Return a list of the names of the currently available + * memory pools within the virtual machine. + * + * @return a list of memory pool names. + */ + static native String[] getMemoryPoolNames(); + + /** + * Return a list of the names of the currently available + * memory managers within the virtual machine. This should + * not include the garbage collectors listed below. + * + * @return a list of memory manager names. + */ + static native String[] getMemoryManagerNames(); + + /** + * Return a list of the names of the currently available + * garbage collectors within the virtual machine. + * + * @return a list of garbage collector names. + */ + static native String[] getGarbageCollectorNames(); +} diff --git a/libjava/classpath/vm/reference/java/net/VMURLConnection.java b/libjava/classpath/vm/reference/java/net/VMURLConnection.java new file mode 100644 index 0000000..19bf581 --- /dev/null +++ b/libjava/classpath/vm/reference/java/net/VMURLConnection.java @@ -0,0 +1,79 @@ +/* VMURLConnection - VM code for URLConnection + 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 +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 java.net; + +import gnu.classpath.Configuration; + +import java.io.IOException; +import java.io.InputStream; + +final class VMURLConnection +{ + public static final int LENGTH = 1024; + + static + { + if (Configuration.INIT_LOAD_LIBRARY) + System.loadLibrary("javanet"); + init(); + } + + private static native void init(); + + private static native String guessContentTypeFromBuffer(byte[] b, int valid); + + /** + * This is called from URLConnection to guess the mime type of a + * stream. This method may return null to indicate that it could + * not guess a type. + */ + static String guessContentTypeFromStream(InputStream is) + throws IOException + { + if (! is.markSupported()) + return null; + is.mark(LENGTH); + byte[] bytes = new byte[LENGTH]; + int r = is.read(bytes); + if (r < 0) + return null; + is.reset(); + return guessContentTypeFromBuffer(bytes, r); + } +} diff --git a/libjava/classpath/vm/reference/sun/misc/Unsafe.java b/libjava/classpath/vm/reference/sun/misc/Unsafe.java new file mode 100644 index 0000000..fa199f8 --- /dev/null +++ b/libjava/classpath/vm/reference/sun/misc/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 sun.misc; + +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 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 Unsafe. 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 obj. + * @param expect the expected value of the field. + * @param update the new value of the field if it equals expect. + * @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 obj. + * @param expect the expected value of the field. + * @param update the new value of the field if it equals expect. + * @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 obj. + * @param expect the expected value of the field. + * @param update the new value of the field if it equals expect. + * @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 putIntVolatile(Object,long,int), which + * doesn't guarantee the immediate visibility of the change to other + * threads. It is only really useful where the integer field is + * volatile, 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 obj. + * @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 putLongVolatile(Object,long,long), which + * doesn't guarantee the immediate visibility of the change to other + * threads. It is only really useful where the long field is + * volatile, 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 obj. + * @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 putObjectVolatile(Object,long,Object), which + * doesn't guarantee the immediate visibility of the change to other + * threads. It is only really useful where the object field is + * volatile, 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 obj. + * @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 obj. + * @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 obj. + */ + 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 obj. + * @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 obj. + * @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 obj. + * @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 obj. + * @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 obj. + * @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 obj. + * @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 obj. + */ + 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 + * arrayIndexScale, + * 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 + * arrayBaseOffset + * 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 + * park. This method can also be used + * to terminate a blockage caused by a prior call to park. + * 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 + * unpark occurs, the thread is + * interrupted or the optional timeout expires. If an unpark + * call has already occurred, this also counts. A timeout value of zero + * is defined as no timeout. When isAbsolute is + * true, 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/sun/reflect/Reflection.java b/libjava/classpath/vm/reference/sun/reflect/Reflection.java new file mode 100644 index 0000000..ef25ce7 --- /dev/null +++ b/libjava/classpath/vm/reference/sun/reflect/Reflection.java @@ -0,0 +1,51 @@ +/* Reflection.java - JSR 166 reflection hooks + 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 sun.reflect; + +import gnu.classpath.VMStackWalker; + +public class Reflection +{ + /** + * A stack-walking wrapper method used by the JSR 166 RI. + */ + public static Class getCallerClass(int depth) + { + return VMStackWalker.getClassContext()[depth]; + } +} diff --git a/libjava/classpath/vm/reference/sun/reflect/misc/ReflectUtil.java b/libjava/classpath/vm/reference/sun/reflect/misc/ReflectUtil.java new file mode 100644 index 0000000..aa89c50 --- /dev/null +++ b/libjava/classpath/vm/reference/sun/reflect/misc/ReflectUtil.java @@ -0,0 +1,92 @@ +/* ReflectUtil.java - JSR 166 reflection hooks + 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 sun.reflect.misc; + +import java.lang.reflect.Modifier; + +public class ReflectUtil +{ + // We use this inaccessible inner class as an argument type + // in verifyMemberAccess. All current users of this method + // in the JSR 166 RI pass 'null' for this argument, and + // consequently we don't know what it means. Using a funny + // type like this for the argument means that if the RI changes, + // we will see a compilation error. + private static class MustBeNull + { + } + + public static void checkPackageAccess(Class declaringClass) + { + // FIXME: not sure what to check here. + } + + /** + * Perform access checks on a member of a class. This API is + * derived from the public domain code in the JSR 166 reference + * implementation. + * @param caller the class requesting access to the member + * @param declarer the declaring class of the member + * @param ignored unknown parameter; always null + * @param modifiers the modifiers on the member + */ + public static void ensureMemberAccess(Class caller, + Class declarer, + MustBeNull ignored, + int modifiers) + { + // Same class, always ok. + if (caller == declarer) + return; + // Public access is ok. + if ((modifiers & Modifier.PUBLIC) != 0) + return; + // Protected access and request comes from + // a subclass of the declarer -- ok. + if ((modifiers & Modifier.PROTECTED) != 0 + && declarer.isAssignableFrom(caller)) + return; + // Package-private access, or protected access, + // and the packages are the same --ok. + if ((modifiers & Modifier.PRIVATE) == 0 + && caller.getPackage() == declarer.getPackage()) + return; + // Otherwise, no. + throw new IllegalAccessError(); + } +} -- cgit v1.1