本文整理汇总了Java中javax.management.MBeanServer.getAttributes方法的典型用法代码示例。如果您正苦于以下问题：Java MBeanServer.getAttributes方法的具体用法？Java MBeanServer.getAttributes怎么用？Java MBeanServer.getAttributes使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类javax.management.MBeanServer的用法示例。
在下文中一共展示了MBeanServer.getAttributes方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: getProcessCpuLoad
import javax.management.MBeanServer; //导入方法依赖的package包/类
public static double getProcessCpuLoad() throws Exception {
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
ObjectName name = ObjectName.getInstance("java.lang:type=OperatingSystem");
AttributeList list = mbs.getAttributes(name, new String[] { "SystemCpuLoad" });
if (list.isEmpty())
return Double.NaN;
Attribute att = (Attribute) list.get(0);
Double value = (Double) att.getValue();
// usually takes a couple of seconds before we get real values
if (value == -1.0)
return Double.NaN;
// returns a percentage value with 1 decimal point precision
return value;
}
示例2: getCpuLoad
import javax.management.MBeanServer; //导入方法依赖的package包/类
/**
* Get CPU Load of Host System
*
* @author http://stackoverflow.com/questions/18489273/how-to-get-percentage-of-cpu-usage-of-os-from-java
*/
private double getCpuLoad() {
try {
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
ObjectName name = ObjectName.getInstance("java.lang:type=OperatingSystem");
AttributeList list = mbs.getAttributes(name, new String[]{"ProcessCpuLoad"});
if (list.isEmpty())
return Double.NaN;
Attribute att = (Attribute) list.get(0);
Double value = (Double) att.getValue();
// usually takes a couple of seconds before we get real values
if (value == -1.0)
return Double.NaN;
// returns a percentage value with 1 decimal point precision
return ((int) (value * 1000) / 10.0);
} catch (Exception e) {
return Double.NaN;
}
}
示例3: getProcessCpuLoad
import javax.management.MBeanServer; //导入方法依赖的package包/类
public static double getProcessCpuLoad() {
double cpuLoad;
try {
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
ObjectName name = ObjectName.getInstance("java.lang:type=OperatingSystem");
AttributeList list = mbs.getAttributes(name, new String[] { "ProcessCpuLoad" });
if(list.isEmpty()) {
return Double.NaN;
}
Attribute att = (Attribute) list.get(0);
Double value = (Double) att.getValue();
if(value == -1.0) {
return Double.NaN;
}
cpuLoad = value * 100d;
} catch (InstanceNotFoundException | ReflectionException | MalformedObjectNameException err) {
cpuLoad = Double.NaN;
}
return cpuLoad;
}
示例4: getCpuLoad
import javax.management.MBeanServer; //导入方法依赖的package包/类
private static double getCpuLoad() {
// http://stackoverflow.com/questions/18489273/how-to-get-percentage-of-cpu-usage-of-os-from-java
try {
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
ObjectName name = ObjectName.getInstance("java.lang:type=OperatingSystem");
AttributeList list = mbs.getAttributes(name, new String[]{ "ProcessCpuLoad" });
if (list.isEmpty())
return Double.NaN;
Attribute att = (Attribute)list.get(0);
Double value = (Double)att.getValue();
// usually takes a couple of seconds before we get real values
if (value == -1.0)
return Double.NaN;
// returns a percentage value with 1 decimal point precision
return ((int)(value * 1000) / 10.0);
} catch(Exception e) {
return Double.NaN;
}
}
示例5: getFileDecriptorInfo
import javax.management.MBeanServer; //导入方法依赖的package包/类
@Override
public long[] getFileDecriptorInfo() {
MBeanServer mbsc = MBeans.getMBeanServer();
AttributeList attributes;
try {
attributes = mbsc.getAttributes(
new ObjectName("java.lang:type=OperatingSystem"),
new String[]{"OpenFileDescriptorCount", "MaxFileDescriptorCount"});
List<Attribute> attrList = attributes.asList();
long openFdCount = (Long)attrList.get(0).getValue();
long maxFdCount = (Long)attrList.get(1).getValue();
long[] fdCounts = { openFdCount, maxFdCount};
return fdCounts;
} catch (Exception e) {
LogFactory.getLog(SdkMBeanRegistrySupport.class).debug(
"Failed to retrieve file descriptor info", e);
}
return null;
}