java 利用ManagementFactory获取jvm,os的一些信息

      想了解下某个java项目的运行时jvm的情况，可以使用一些监控工具，比如jdk的bin下就提供了很多工具。

  

比如，本地运行一个程序，让它死循环

while(true){
			try {
				Thread.sleep(10*1000);
			} catch (Exception e) {
				
			}
		}

    然后，点击启动jconsole.exe

可以发现，jconsole.exe可以连接本地，也可以连接远程，我们选择本地的中的刚刚上面执行的那个类

我们发现，居然可以监控到这么多信息，那如果我们自己写代码，能否获取到这些信息呢，点击MBean。

java.lang下，看名称就知道是什么了，再点击某一个，会看到一些类信息，也就是说，我们是有可能自己写代码也能获取到jvm信息的。

    下面就记录下例子代码。

package com.fei;

import java.lang.management.ClassLoadingMXBean;
import java.lang.management.CompilationMXBean;
import java.lang.management.GarbageCollectorMXBean;
import java.lang.management.ManagementFactory;
import java.lang.management.MemoryMXBean;
import java.lang.management.MemoryManagerMXBean;
import java.lang.management.MemoryPoolMXBean;
import java.lang.management.MemoryUsage;
import java.lang.management.OperatingSystemMXBean;
import java.lang.management.RuntimeMXBean;
import java.lang.management.ThreadInfo;
import java.lang.management.ThreadMXBean;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.List;

public class JvmInfo {

	static final long MB = 1024 * 1024;
	
	public static void main(String[] args) {
		
				
		//打印系统信息
		System.out.println("===========打印系统信息==========");
		printOperatingSystemInfo();
		//打印编译信息
		System.out.println("===========打印编译信息==========");
		printCompilationInfo();
		//打印类加载信息
		System.out.println("===========打印类加载信息==========");
		printClassLoadingInfo();
		//打印运行时信息
		System.out.println("===========打印运行时信息==========");
		printRuntimeInfo();
		//打印内存管理器信息
		System.out.println("===========打印内存管理器信息==========");
		printMemoryManagerInfo();
		//打印垃圾回收信息
		System.out.println("===========打印垃圾回收信息==========");
		printGarbageCollectorInfo();
		//打印vm内存
		System.out.println("===========打印vm内存信息==========");
		printMemoryInfo();
		//打印vm各内存区信息
		System.out.println("===========打印vm各内存区信息==========");
		printMemoryPoolInfo();
		//打印线程信息
		System.out.println("===========打印线程==========");
		printThreadInfo();
		
	}
	
	
	private static void printOperatingSystemInfo(){
		OperatingSystemMXBean system = ManagementFactory.getOperatingSystemMXBean();
		//相当于System.getProperty("os.name").
		System.out.println("系统名称:"+system.getName());
		//相当于System.getProperty("os.version").
		System.out.println("系统版本:"+system.getVersion());
		//相当于System.getProperty("os.arch").
		System.out.println("操作系统的架构:"+system.getArch());
		//相当于 Runtime.availableProcessors()
		System.out.println("可用的内核数:"+system.getAvailableProcessors());
		
		if(isSunOsMBean(system)){
			long totalPhysicalMemory = getLongFromOperatingSystem(system,"getTotalPhysicalMemorySize");
			long freePhysicalMemory = getLongFromOperatingSystem(system, "getFreePhysicalMemorySize");
			long usedPhysicalMemorySize =totalPhysicalMemory - freePhysicalMemory;
			
			System.out.println("总物理内存(M):"+totalPhysicalMemory/MB);
			System.out.println("已用物理内存(M):"+usedPhysicalMemorySize/MB);
			System.out.println("剩余物理内存(M):"+freePhysicalMemory/MB);
			
			long  totalSwapSpaceSize = getLongFromOperatingSystem(system, "getTotalSwapSpaceSize");
			long freeSwapSpaceSize = getLongFromOperatingSystem(system, "getFreeSwapSpaceSize");
			long usedSwapSpaceSize = totalSwapSpaceSize - freeSwapSpaceSize;
			
			System.out.println("总交换空间(M):"+totalSwapSpaceSize/MB);
			System.out.println("已用交换空间(M):"+usedSwapSpaceSize/MB);
			System.out.println("剩余交换空间(M):"+freeSwapSpaceSize/MB);
		}
	}
	
	private static long getLongFromOperatingSystem(OperatingSystemMXBean operatingSystem, String methodName) {
		try {
			final Method method = operatingSystem.getClass().getMethod(methodName,
					(Class[]) null);
			method.setAccessible(true);
			return (Long) method.invoke(operatingSystem, (Object[]) null);
		} catch (final InvocationTargetException e) {
			if (e.getCause() instanceof Error) {
				throw (Error) e.getCause();
			} else if (e.getCause() instanceof RuntimeException) {
				throw (RuntimeException) e.getCause();
			}
			throw new IllegalStateException(e.getCause());
		} catch (final NoSuchMethodException e) {
			throw new IllegalArgumentException(e);
		} catch (final IllegalAccessException e) {
			throw new IllegalStateException(e);
		}
	}

	private static void printCompilationInfo(){
		CompilationMXBean compilation = ManagementFactory.getCompilationMXBean();
		System.out.println("JIT编译器名称："+compilation.getName());
		//判断jvm是否支持编译时间的监控
		if(compilation.isCompilationTimeMonitoringSupported()){
			System.out.println("总编译时间："+compilation.getTotalCompilationTime()+"秒");
		}
	}
	
	private static void printClassLoadingInfo(){
		ClassLoadingMXBean classLoad= ManagementFactory.getClassLoadingMXBean();
		System.out.println("已加载类总数："+classLoad.getTotalLoadedClassCount());
		System.out.println("已加载当前类："+classLoad.getLoadedClassCount());
		System.out.println("已卸载类总数："+classLoad.getUnloadedClassCount());
		
	}
	
	private static void printRuntimeInfo(){
		RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
		System.out.println("进程PID="+runtime.getName().split("@")[0]);
		System.out.println("jvm规范名称:"+runtime.getSpecName());
		System.out.println("jvm规范运营商:"+runtime.getSpecVendor());
		System.out.println("jvm规范版本:"+runtime.getSpecVersion());
		//返回虚拟机在毫秒内的开始时间。该方法返回了虚拟机启动时的近似时间
		System.out.println("jvm启动时间（毫秒）:"+runtime.getStartTime());
		//相当于System.getProperties
		System.out.println("获取System.properties:"+runtime.getSystemProperties());
		System.out.println("jvm正常运行时间（毫秒）:"+runtime.getUptime());
		//相当于System.getProperty("java.vm.name").
		System.out.println("jvm名称:"+runtime.getVmName());
		//相当于System.getProperty("java.vm.vendor").
		System.out.println("jvm运营商:"+runtime.getVmVendor());
		//相当于System.getProperty("java.vm.version").
		System.out.println("jvm实现版本:"+runtime.getVmVersion());
		List args = runtime.getInputArguments();
		if(args != null && !args.isEmpty()){
			System.out.println("vm参数:");
			for(String arg : args){
				System.out.println(arg);
			}
		}
		System.out.println("类路径:"+runtime.getClassPath());
		System.out.println("引导类路径:"+runtime.getBootClassPath());
		System.out.println("库路径:"+runtime.getLibraryPath());
	}
	
	private static void printMemoryManagerInfo(){
		List managers = ManagementFactory.getMemoryManagerMXBeans();
		if(managers != null && !managers.isEmpty()){
			for(MemoryManagerMXBean manager : managers){
				System.out.println("vm内存管理器：名称="+manager.getName()+",管理的内存区="
			+Arrays.deepToString(manager.getMemoryPoolNames())+",ObjectName="+manager.getObjectName());
			}
		}
	}
	
	private static void printGarbageCollectorInfo(){
		List garbages = ManagementFactory.getGarbageCollectorMXBeans();
		for(GarbageCollectorMXBean garbage : garbages){
			System.out.println("垃圾收集器：名称="+garbage.getName()+",收集="+garbage.getCollectionCount()+",总花费时间="
		+garbage.getCollectionTime()+",内存区名称="+Arrays.deepToString(garbage.getMemoryPoolNames()));
		}
	}
	
	private static void printMemoryInfo(){
		MemoryMXBean memory = ManagementFactory.getMemoryMXBean();
		MemoryUsage headMemory = memory.getHeapMemoryUsage();
		System.out.println("head堆:");
		System.out.println("\t初始(M):"+headMemory.getInit()/MB);
		System.out.println("\t最大(上限)(M):"+headMemory.getMax()/MB);
		System.out.println("\t当前(已使用)(M):"+headMemory.getUsed()/MB);
		System.out.println("\t提交的内存(已申请)(M):"+headMemory.getCommitted()/MB);
		System.out.println("\t使用率:"+headMemory.getUsed()*100/headMemory.getCommitted()+"%");
		
		System.out.println("non-head非堆:");
		MemoryUsage nonheadMemory = memory.getNonHeapMemoryUsage();
		System.out.println("\t初始(M):"+nonheadMemory.getInit()/MB);
		System.out.println("\t最大(上限)(M):"+nonheadMemory.getMax()/MB);
		System.out.println("\t当前(已使用)(M):"+nonheadMemory.getUsed()/MB);
		System.out.println("\t提交的内存(已申请)(M):"+nonheadMemory.getCommitted()/MB);
		System.out.println("\t使用率:"+nonheadMemory.getUsed()*100/nonheadMemory.getCommitted()+"%");
	}
	
	private static void printMemoryPoolInfo(){
		List pools = ManagementFactory.getMemoryPoolMXBeans();
		if(pools != null && !pools.isEmpty()){
			for(MemoryPoolMXBean pool : pools){
				//只打印一些各个内存区都有的属性，一些区的特殊属性，可看文档或百度
				//最大值，初始值，如果没有定义的话，返回-1，所以真正使用时，要注意
				System.out.println("vm内存区:\n\t名称="+pool.getName()+"\n\t所属内存管理者="+Arrays.deepToString(pool.getMemoryManagerNames())
						+"\n\t ObjectName="+pool.getObjectName()+"\n\t初始大小(M)="+pool.getUsage().getInit()/MB
						+"\n\t最大(上限)(M)="+pool.getUsage().getMax()/MB
						+"\n\t已用大小(M)="+pool.getUsage().getUsed()/MB
						+"\n\t已提交(已申请)(M)="+pool.getUsage().getCommitted()/MB
						+"\n\t使用率="+(pool.getUsage().getUsed()*100/pool.getUsage().getCommitted())+"%");
			
			}
		}
	}
	
	private static void printThreadInfo(){
		ThreadMXBean thread = ManagementFactory.getThreadMXBean();
		System.out.println("ObjectName="+thread.getObjectName());
		System.out.println("仍活动的线程总数="+thread.getThreadCount());
		System.out.println("峰值="+thread.getPeakThreadCount());
		System.out.println("线程总数（被创建并执行过的线程总数）="+thread.getTotalStartedThreadCount());
		System.out.println("当初仍活动的守护线程（daemonThread）总数="+thread.getDaemonThreadCount());
		
		//检查是否有死锁的线程存在
		long[] deadlockedIds =  thread.findDeadlockedThreads();
		if(deadlockedIds != null && deadlockedIds.length > 0){
			ThreadInfo[] deadlockInfos = thread.getThreadInfo(deadlockedIds);
			System.out.println("死锁线程信息:");
			System.out.println("\t\t线程名称\t\t状态\t\t");
			for(ThreadInfo deadlockInfo : deadlockInfos){
				System.out.println("\t\t"+deadlockInfo.getThreadName()+"\t\t"+deadlockInfo.getThreadState()
						+"\t\t"+deadlockInfo.getBlockedTime()+"\t\t"+deadlockInfo.getWaitedTime()
						+"\t\t"+deadlockInfo.getStackTrace().toString());
			}
		}
		long[] threadIds = thread.getAllThreadIds();
		if(threadIds != null && threadIds.length > 0){
			ThreadInfo[] threadInfos = thread.getThreadInfo(threadIds);
			System.out.println("所有线程信息:");
			System.out.println("\t\t线程名称\t\t\t\t\t状态\t\t\t\t\t线程id");
			for(ThreadInfo threadInfo : threadInfos){
				System.out.println("\t\t"+threadInfo.getThreadName()+"\t\t\t\t\t"+threadInfo.getThreadState()
						+"\t\t\t\t\t"+threadInfo.getThreadId());
			}
		}
		
	}
	
	private static boolean isSunOsMBean(OperatingSystemMXBean operatingSystem) {
		final String className = operatingSystem.getClass().getName();
		return "com.sun.management.OperatingSystem".equals(className)
				|| "com.sun.management.UnixOperatingSystem".equals(className);
	}
}

===========打印系统信息==========
系统名称:Windows 7
系统版本:6.1
操作系统的架构:amd64
可用的内核数:4
总物理内存(M):6041
已用物理内存(M):5387
剩余物理内存(M):653
总交换空间(M):18136
已用交换空间(M):15817
剩余交换空间(M):2319
===========打印编译信息==========
JIT编译器名称：HotSpot 64-Bit Tiered Compilers
总编译时间：0秒
===========打印类加载信息==========
已加载类总数：410
已加载当前类：410
已卸载类总数：0
===========打印运行时信息==========
进程PID=386220
jvm规范名称:Java Virtual Machine Specification
jvm规范运营商:Oracle Corporation
jvm规范版本:1.7
jvm启动时间（毫秒）:1447134405258
获取System.properties:{java.vm.version=24.80-b11, sun.jnu.encoding=GBK, java.vendor.url=http://java.oracle.com/, java.vm.info=mixed mode, user.dir=E:\test2\test200, sun.cpu.isalist=amd64, java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment, sun.os.patch.level=Service Pack 1, java.io.tmpdir=C:\Users\WEIJIA~1\AppData\Local\Temp\, user.home=E:\USER\weijianfei, java.awt.printerjob=sun.awt.windows.WPrinterJob, java.version=1.7.0_80, file.encoding.pkg=sun.io, java.vendor.url.bug=http://bugreport.sun.com/bugreport/, file.encoding=UTF-8, line.separator=
, sun.java.command=com.fei.JvmInfo, java.vm.specification.vendor=Oracle Corporation, java.vm.vendor=Oracle Corporation, java.class.path=E:\test2\test200\target\classes;E:\setup\maven\org\apache\zookeeper\zookeeper\3.4.6\zookeeper-3.4.6.jar;E:\setup\maven\org\slf4j\slf4j-api\1.6.1\slf4j-api-1.6.1.jar;E:\setup\maven\org\slf4j\slf4j-log4j12\1.6.1\slf4j-log4j12-1.6.1.jar;E:\setup\maven\log4j\log4j\1.2.16\log4j-1.2.16.jar;E:\setup\maven\jline\jline\0.9.94\jline-0.9.94.jar;E:\setup\maven\junit\junit\3.8.1\junit-3.8.1.jar;E:\setup\maven\io\netty\netty\3.7.0.Final\netty-3.7.0.Final.jar;E:\setup\maven\org\springframework\spring-webmvc\4.2.1.RELEASE\spring-webmvc-4.2.1.RELEASE.jar;E:\setup\maven\org\springframework\spring-beans\4.2.1.RELEASE\spring-beans-4.2.1.RELEASE.jar;E:\setup\maven\org\springframework\spring-context\4.2.1.RELEASE\spring-context-4.2.1.RELEASE.jar;E:\setup\maven\org\springframework\spring-aop\4.2.1.RELEASE\spring-aop-4.2.1.RELEASE.jar;E:\setup\maven\aopalliance\aopalliance\1.0\aopalliance-1.0.jar;E:\setup\maven\org\springframework\spring-core\4.2.1.RELEASE\spring-core-4.2.1.RELEASE.jar;E:\setup\maven\commons-logging\commons-logging\1.2\commons-logging-1.2.jar;E:\setup\maven\org\springframework\spring-expression\4.2.1.RELEASE\spring-expression-4.2.1.RELEASE.jar;E:\setup\maven\org\springframework\spring-web\4.2.1.RELEASE\spring-web-4.2.1.RELEASE.jar, sun.io.unicode.encoding=UnicodeLittle, user.variant=, os.arch=amd64, user.name=weijianfei, user.language=zh, java.runtime.version=1.7.0_80-b15, sun.boot.class.path=D:\jre1.7\lib\resources.jar;D:\jre1.7\lib\rt.jar;D:\jre1.7\lib\sunrsasign.jar;D:\jre1.7\lib\jsse.jar;D:\jre1.7\lib\jce.jar;D:\jre1.7\lib\charsets.jar;D:\jre1.7\lib\jfr.jar;D:\jre1.7\classes, sun.desktop=windows, sun.cpu.endian=little, awt.toolkit=sun.awt.windows.WToolkit, sun.boot.library.path=D:\jre1.7\bin, java.vm.name=Java HotSpot(TM) 64-Bit Server VM, java.home=D:\jre1.7, java.endorsed.dirs=D:\jre1.7\lib\endorsed, sun.management.compiler=HotSpot 64-Bit Tiered Compilers, java.runtime.name=Java(TM) SE Runtime Environment, java.library.path=D:\jre1.7\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Java\jdk1.6.0_45\bin;C:\Program Files\Java\jdk1.6.0_45\jre\bin;D:\soft\svn1.8\bin;D:\apache-maven-3.2.3\bin;D:\mysql5.7\MySQL Server 5.7\bin;D:\mysql5.7\MySQL Utilities 1.3.5\;D:\mongoDB;., file.separator=\, java.specification.vendor=Oracle Corporation, java.vm.specification.version=1.7, sun.java.launcher=SUN_STANDARD, user.timezone=, os.name=Windows 7, path.separator=;, java.ext.dirs=D:\jre1.7\lib\ext;C:\Windows\Sun\Java\lib\ext, sun.arch.data.model=64, java.specification.name=Java Platform API Specification, os.version=6.1, user.script=, user.country=CN, java.class.version=51.0, java.vendor=Oracle Corporation, java.vm.specification.name=Java Virtual Machine Specification, java.specification.version=1.7}
jvm正常运行时间（毫秒）:573
jvm名称:Java HotSpot(TM) 64-Bit Server VM
jvm运营商:Oracle Corporation
jvm实现版本:24.80-b11
vm参数:
-Dfile.encoding=UTF-8
类路径:E:\test2\test200\target\classes;E:\setup\maven\org\apache\zookeeper\zookeeper\3.4.6\zookeeper-3.4.6.jar;E:\setup\maven\org\slf4j\slf4j-api\1.6.1\slf4j-api-1.6.1.jar;E:\setup\maven\org\slf4j\slf4j-log4j12\1.6.1\slf4j-log4j12-1.6.1.jar;E:\setup\maven\log4j\log4j\1.2.16\log4j-1.2.16.jar;E:\setup\maven\jline\jline\0.9.94\jline-0.9.94.jar;E:\setup\maven\junit\junit\3.8.1\junit-3.8.1.jar;E:\setup\maven\io\netty\netty\3.7.0.Final\netty-3.7.0.Final.jar;E:\setup\maven\org\springframework\spring-webmvc\4.2.1.RELEASE\spring-webmvc-4.2.1.RELEASE.jar;E:\setup\maven\org\springframework\spring-beans\4.2.1.RELEASE\spring-beans-4.2.1.RELEASE.jar;E:\setup\maven\org\springframework\spring-context\4.2.1.RELEASE\spring-context-4.2.1.RELEASE.jar;E:\setup\maven\org\springframework\spring-aop\4.2.1.RELEASE\spring-aop-4.2.1.RELEASE.jar;E:\setup\maven\aopalliance\aopalliance\1.0\aopalliance-1.0.jar;E:\setup\maven\org\springframework\spring-core\4.2.1.RELEASE\spring-core-4.2.1.RELEASE.jar;E:\setup\maven\commons-logging\commons-logging\1.2\commons-logging-1.2.jar;E:\setup\maven\org\springframework\spring-expression\4.2.1.RELEASE\spring-expression-4.2.1.RELEASE.jar;E:\setup\maven\org\springframework\spring-web\4.2.1.RELEASE\spring-web-4.2.1.RELEASE.jar
引导类路径:D:\jre1.7\lib\resources.jar;D:\jre1.7\lib\rt.jar;D:\jre1.7\lib\sunrsasign.jar;D:\jre1.7\lib\jsse.jar;D:\jre1.7\lib\jce.jar;D:\jre1.7\lib\charsets.jar;D:\jre1.7\lib\jfr.jar;D:\jre1.7\classes
库路径:D:\jre1.7\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Java\jdk1.6.0_45\bin;C:\Program Files\Java\jdk1.6.0_45\jre\bin;D:\soft\svn1.8\bin;D:\apache-maven-3.2.3\bin;D:\mysql5.7\MySQL Server 5.7\bin;D:\mysql5.7\MySQL Utilities 1.3.5\;D:\mongoDB;.
===========打印内存管理器信息==========
vm内存管理器：名称=CodeCacheManager,管理的内存区=[Code Cache],ObjectName=java.lang:type=MemoryManager,name=CodeCacheManager
vm内存管理器：名称=PS Scavenge,管理的内存区=[PS Eden Space, PS Survivor Space],ObjectName=java.lang:type=GarbageCollector,name=PS Scavenge
vm内存管理器：名称=PS MarkSweep,管理的内存区=[PS Eden Space, PS Survivor Space, PS Old Gen, PS Perm Gen],ObjectName=java.lang:type=GarbageCollector,name=PS MarkSweep
===========打印垃圾回收信息==========
垃圾收集器：名称=PS Scavenge,收集=0,总花费时间=0,内存区名称=[PS Eden Space, PS Survivor Space]
垃圾收集器：名称=PS MarkSweep,收集=0,总花费时间=0,内存区名称=[PS Eden Space, PS Survivor Space, PS Old Gen, PS Perm Gen]
===========打印vm内存信息==========
head堆:
	初始(M):94
	最大(上限)(M):1344
	当前(已使用)(M):1
	提交的内存(已申请)(M):91
	使用率:1%
non-head非堆:
	初始(M):23
	最大(上限)(M):130
	当前(已使用)(M):3
	提交的内存(已申请)(M):23
	使用率:13%
===========打印vm各内存区信息==========
vm内存区:
	名称=Code Cache
	所属内存管理者=[CodeCacheManager]
	 ObjectName=java.lang:type=MemoryPool,name=Code Cache
	初始大小(M)=2
	最大(上限)(M)=48
	已用大小(M)=0
	已提交(已申请)(M)=2
	使用率=15%
vm内存区:
	名称=PS Eden Space
	所属内存管理者=[PS MarkSweep, PS Scavenge]
	 ObjectName=java.lang:type=MemoryPool,name=PS Eden Space
	初始大小(M)=24
	最大(上限)(M)=497
	已用大小(M)=1
	已提交(已申请)(M)=24
	使用率=6%
vm内存区:
	名称=PS Survivor Space
	所属内存管理者=[PS MarkSweep, PS Scavenge]
	 ObjectName=java.lang:type=MemoryPool,name=PS Survivor Space
	初始大小(M)=3
	最大(上限)(M)=3
	已用大小(M)=0
	已提交(已申请)(M)=3
	使用率=0%
vm内存区:
	名称=PS Old Gen
	所属内存管理者=[PS MarkSweep]
	 ObjectName=java.lang:type=MemoryPool,name=PS Old Gen
	初始大小(M)=63
	最大(上限)(M)=1008
	已用大小(M)=0
	已提交(已申请)(M)=63
	使用率=0%
vm内存区:
	名称=PS Perm Gen
	所属内存管理者=[PS MarkSweep]
	 ObjectName=java.lang:type=MemoryPool,name=PS Perm Gen
	初始大小(M)=21
	最大(上限)(M)=82
	已用大小(M)=2
	已提交(已申请)(M)=21
	使用率=13%
===========打印线程==========
ObjectName=java.lang:type=Threading
仍活动的线程总数=5
峰值=5
线程总数（被创建并执行过的线程总数）=5
当初仍活动的守护线程（daemonThread）总数=4
所有线程信息:
		线程名称					状态					线程id
		Attach Listener					RUNNABLE					5
		Signal Dispatcher					RUNNABLE					4
		Finalizer					WAITING					3
		Reference Handler					WAITING					2
		main					RUNNABLE					1