diff options
Diffstat (limited to 'libjava/classpath/vm/reference')
19 files changed, 1456 insertions, 24 deletions
diff --git a/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMVirtualMachine.java b/libjava/classpath/vm/reference/gnu/classpath/jdwp/VMVirtualMachine.java index d8616063d19..d4985bf2f2e 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 00000000000..c1c7d13dd44 --- /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 00000000000..b9b5bbcefc7 --- /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 00000000000..2a202849a8f --- /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 00000000000..193e3353517 --- /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 00000000000..0a4204a6d57 --- /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 00000000000..723d4e89713 --- /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 <code>null</code> + * 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, + * <code>gnu.java.lang.management.CollectionUsageThresholdSupport</code>, + * 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, + * <code>gnu.java.lang.management.CollectionUsageThresholdSupport</code>, + * 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, + * <code>gnu.java.lang.management.UsageThresholdSupport</code>, + * 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, + * <code>gnu.java.lang.management.UsageThresholdSupport</code>, + * 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, + * <code>gnu.java.lang.management.CollectionUsageThresholdSupport</code>, + * 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, + * <code>gnu.java.lang.management.UsageThresholdSupport</code>, + * 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 00000000000..32a86604614 --- /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 <code>main()</code>. + * + * @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 00000000000..c5bcb631055 --- /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 <code>ThreadInfo</code>. + */ + 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 00000000000..fdea8ff6213 --- /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 <mike@middlesoft.co.uk> + * + */ +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 2931044c853..2f48aad71f8 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. * <p> * 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 4caa58c2ae6..897df5186b3 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 f96986df373..bf46b27aa92 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; + } /** * <p> @@ -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 302de6c35a8..ff0ec687863 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 00000000000..f10497014b4 --- /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 00000000000..19bf5814e67 --- /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/gnu/classpath/Unsafe.java b/libjava/classpath/vm/reference/sun/misc/Unsafe.java index 6e4ec98027f..fa199f83e0a 100644 --- a/libjava/classpath/vm/reference/gnu/classpath/Unsafe.java +++ b/libjava/classpath/vm/reference/sun/misc/Unsafe.java @@ -35,7 +35,7 @@ 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; +package sun.misc; import java.lang.reflect.Field; @@ -48,7 +48,7 @@ import java.lang.reflect.Field; * @author Tom Tromey (tromey@redhat.com) * @author Andrew John Hughes (gnu_andrew@member.fsf.org) */ -public final class Unsafe +public class Unsafe { // Singleton class. private static Unsafe unsafe = new Unsafe(); @@ -279,7 +279,7 @@ public final class Unsafe * @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) + * @see arrayIndexScale(Class) */ public native int arrayBaseOffset(Class arrayClass); 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 00000000000..ef25ce71f1c --- /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 00000000000..aa89c50ac9b --- /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(); + } +} |
