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remove unused class

This commit is contained in:
Shay Banon 2013-09-27 10:09:58 +02:00
parent ffe502ddc2
commit 40aebfaf57
1 changed files with 0 additions and 81 deletions
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81
src/main/java/org/elasticsearch/monitor/jvm/JvmUtils.java
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@ -1,81 +0,0 @@
/*
* Licensed to ElasticSearch and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. ElasticSearch licenses this
* file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.monitor.jvm;
import java.lang.reflect.Field;
/**
*/
public class JvmUtils {
/**
* True iff running on a 64bit JVM
*/
public static final boolean JRE_IS_64BIT;
public static final boolean JRE_IS_MINIMUM_JAVA6;
public static final boolean JRE_IS_MINIMUM_JAVA7;
static {
boolean is64Bit = false;
try {
final Class<?> unsafeClass = Class.forName("sun.misc.Unsafe");
final Field unsafeField = unsafeClass.getDeclaredField("theUnsafe");
unsafeField.setAccessible(true);
final Object unsafe = unsafeField.get(null);
final int addressSize = ((Number) unsafeClass.getMethod("addressSize")
.invoke(unsafe)).intValue();
//System.out.println("Address size: " + addressSize);
is64Bit = addressSize >= 8;
} catch (Throwable e) {
final String x = System.getProperty("sun.arch.data.model");
if (x != null) {
is64Bit = x.indexOf("64") != -1;
} else {
String OS_ARCH = System.getProperty("os.arch");
if (OS_ARCH != null && OS_ARCH.indexOf("64") != -1) {
is64Bit = true;
} else {
is64Bit = false;
}
}
}
JRE_IS_64BIT = is64Bit;
// this method only exists in Java 6:
boolean v6 = true;
try {
String.class.getMethod("isEmpty");
} catch (NoSuchMethodException nsme) {
v6 = false;
}
JRE_IS_MINIMUM_JAVA6 = v6;
// this method only exists in Java 7:
boolean v7 = true;
try {
Throwable.class.getMethod("getSuppressed");
} catch (NoSuchMethodException nsme) {
v7 = false;
}
JRE_IS_MINIMUM_JAVA7 = v7;
}
}