From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../java/lang/management/VMMemoryMXBeanImpl.java | 109 +++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 libjava/gnu/java/lang/management/VMMemoryMXBeanImpl.java (limited to 'libjava/gnu/java/lang/management/VMMemoryMXBeanImpl.java') diff --git a/libjava/gnu/java/lang/management/VMMemoryMXBeanImpl.java b/libjava/gnu/java/lang/management/VMMemoryMXBeanImpl.java new file mode 100644 index 000000000..193e33535 --- /dev/null +++ b/libjava/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); + +} -- cgit v1.2.3