90 lines
3.2 KiB
Java
90 lines
3.2 KiB
Java
/* VMClassLoadingMXBeanImpl.java - VM impl. of a class loading bean
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Copyright (C) 2006 Free Software Foundation
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.lang.management;
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/**
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* Provides access to information about the class loading
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* behaviour of the current invocation of the virtual
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* machine. Instances of this bean are obtained by calling
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* {@link ManagementFactory#getClassLoadingMXBean()}.
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*
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* @author Andrew John Hughes (gnu_andrew@member.fsf.org)
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* @since 1.5
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*/
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final class VMClassLoadingMXBeanImpl
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{
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/**
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* Returns the number of classes currently loaded by
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* the virtual machine.
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*
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* @return the number of loaded classes.
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*/
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static native int getLoadedClassCount();
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/**
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* Returns the number of classes that have been unloaded
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* by the virtual machine since it was started.
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*
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* @return the number of unloaded classes.
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*/
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static native long getUnloadedClassCount();
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/**
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* Returns true if the virtual machine will emit additional
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* information when classes are loaded and unloaded. The
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* format of the output is left up to the virtual machine.
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*
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* @return true if verbose class loading output is on.
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*/
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static native boolean isVerbose();
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/**
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* Turns on or off the emission of additional information
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* when classes are loaded and unloaded. The format of the
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* output is left up to the virtual machine. This method
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* may be called by multiple threads concurrently, but there
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* is only one global setting of verbosity that is affected.
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*
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* @param verbose the new setting for verbose class loading
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* output.
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*/
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static native void setVerbose(boolean verbose);
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}
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