author | mchung |
Tue, 18 Mar 2008 11:53:15 -0700 | |
changeset 264 | 2d63554b2562 |
parent 2 | 90ce3da70b43 |
child 715 | f16baef3a20e |
permissions | -rw-r--r-- |
2 | 1 |
/* |
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* Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Sun designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Sun in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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*/ |
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package sun.management; |
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import java.util.*; |
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import com.sun.management.VMOption; |
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import com.sun.management.VMOption.Origin; |
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/** |
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* Flag class is a helper class for constructing a VMOption. |
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* It has the static methods for getting the Flag objects, each |
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* corresponds to one VMOption. |
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* |
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*/ |
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class Flag { |
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private String name; |
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private Object value; |
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private Origin origin; |
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private boolean writeable; |
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private boolean external; |
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Flag(String name, Object value, boolean writeable, |
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boolean external, Origin origin) { |
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this.name = name; |
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this.value = value; |
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this.origin = origin; |
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this.writeable = writeable; |
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this.external = external; |
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} |
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Object getValue() { |
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return value; |
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} |
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boolean isWriteable() { |
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return writeable; |
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} |
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boolean isExternal() { |
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return external; |
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} |
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VMOption getVMOption() { |
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264
2d63554b2562
6658779: Regression: HotspotDiagnosticMXBean.getDiagnosticOptions() throws NullPointerException
mchung
parents:
2
diff
changeset
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String val = value == null ? "" : value.toString(); |
2d63554b2562
6658779: Regression: HotspotDiagnosticMXBean.getDiagnosticOptions() throws NullPointerException
mchung
parents:
2
diff
changeset
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return new VMOption(name, val, writeable, origin); |
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} |
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static Flag getFlag(String name) { |
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Flag[] fs = new Flag[1]; |
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String[] names = new String[1]; |
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names[0] = name; |
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int count = getFlags(names, fs, 1); |
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if (count == 1) { |
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return fs[0]; |
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} else { |
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return null; |
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} |
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} |
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static List<Flag> getAllFlags() { |
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int numFlags = getInternalFlagCount(); |
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Flag[] fs = new Flag[numFlags]; |
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// Get all internal flags with names = null |
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int count = getFlags(null, fs, numFlags); |
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return Arrays.asList(fs); |
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} |
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private static native String[] getAllFlagNames(); |
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private static native int getFlags(String[] names, Flag[] flags, int count); |
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private static native int getInternalFlagCount(); |
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// These set* methods are synchronized on the class object |
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// to avoid multiple threads updating the same flag at the same time. |
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static synchronized native void setLongValue(String name, long value); |
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static synchronized native void setBooleanValue(String name, boolean value); |
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static synchronized native void setStringValue(String name, String value); |
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static { |
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initialize(); |
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} |
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private static native void initialize(); |
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} |