package com.share;

import java.lang.management.*;

import java.util.Arrays;

import java.util.List;

/**

* @ClassName Mang

* @Author chenzhuo

* @Version 1.0

* @Date 2019-07-25 22:02

**/

public class Mang {

public static void main(String[] args) {

// 1. 操作系统信息

OperatingSystemMXBean operatingSystemMXBean = ManagementFactory.getOperatingSystemMXBean();

System.out.println(operatingSystemMXBean.getName());

// 2. 运行时

RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();

System.out.println(runtimeMXBean.getUptime());

// 3.1 JVM内存信息

MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();

System.out.println(memoryMXBean.getHeapMemoryUsage());

// 3.2 JVM内存池-列表

List<MemoryPoolMXBean> memoryPoolMXBeans = ManagementFactory.getMemoryPoolMXBeans();

memoryPoolMXBeans.forEach(s->{

System.out.println(s.getPeakUsage());

});

// 3.3 内存管理器-列表

List<MemoryManagerMXBean> memoryManagerMXBeans = ManagementFactory.getMemoryManagerMXBeans();

memoryManagerMXBeans.forEach(s->{

System.out.println(s.getMemoryPoolNames().toString());

});

// 4. class加载统计信息

ClassLoadingMXBean classLoadingMXBean = ManagementFactory.getClassLoadingMXBean();

System.out.println(classLoadingMXBean.getLoadedClassCount());

// 5. 编译统计信息

CompilationMXBean compilationMXBean = ManagementFactory.getCompilationMXBean();

System.out.println(compilationMXBean.getName());

// 6. 线程

ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();

System.out.println(Arrays.asList(threadMXBean.getAllThreadIds()));

// 7.GC

List<GarbageCollectorMXBean> garbageCollectorMXBeans = ManagementFactory.getGarbageCollectorMXBeans();

garbageCollectorMXBeans.forEach(s->{

System.out.println(Arrays.asList(s.getMemoryPoolNames()));

});

}

}