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POSigar API throws "org.hyperic.sigar.SigarPermissionDeniedException"
 

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  1. POSigar API throws "org.hyperic.sigar.SigarPermissionDeniedException"
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    <p>I'm new to Sigar and I'm trying to use Sigar API to gather CPU usage.</p> <p>But Sigar throws this: </p> <blockquote> <p>org.hyperic.sigar.SigarPermissionDeniedException: Access is denied.</p> </blockquote> <p>Can anyone help me? Here's my code:</p> <pre><code>public void pollCheck() { SysInfo sys=new SysInfo(); System.out.println("Total CPU:"+sys.getTotalCPU()); } </code></pre> <p>And here's SysInfo.java:</p> <pre><code>import org.hyperic.sigar.ProcCpu; import org.hyperic.sigar.Sigar; public class SysInfo { public long[] getProList(){ long[] result=null; try{ Sigar sigar=new Sigar(); result=sigar.getProcList(); }catch(Exception e){ System.out.println("Error in SysInfo.getProList:"+e.toString()); e.printStackTrace(); } return result; } public double getTotalCPU(){ long[] procs=getProList(); double total=0.0; try{ Sigar sigar=new Sigar(); for(long proc:procs){ ProcCpu temp=sigar.getProcCpu(proc); temp.gather(sigar, proc); total+=temp.getPercent(); } }catch(Exception e){ System.out.println("Error in SysInfo.getTotalCPU:"+e.toString()); e.printStackTrace(); } return total; } } </code></pre> <p>And the error info is:</p> <pre><code>[2013-11-25T10:53:24.651+0800] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=22 _ThreadName=Thread-3] [timeMillis: 1385348004651] [levelValue: 800] [[ Error in SysInfo.getTotalCPU:org.hyperic.sigar.SigarPermissionDeniedException: Access is denied.]] [2013-11-25T10:53:24.655+0800] [glassfish 4.0] [SEVERE] [] [] [tid: _ThreadID=22 _ThreadName=Thread-4] [timeMillis: 1385348004655] [levelValue: 1000] [[ org.hyperic.sigar.SigarPermissionDeniedException: Access is denied. at org.hyperic.sigar.ProcCpu.gather(Native Method) at org.hyperic.sigar.ProcCpu.fetch(ProcCpu.java:30) at org.hyperic.sigar.Sigar.getProcCpu(Sigar.java:488) at bean.SysInfo.getTotalCPU(SysInfo.java:32) at bean.indexBean.pollCheck(indexBean.java:56) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at javax.el.ELUtil.invokeMethod(ELUtil.java:326) at javax.el.BeanELResolver.invoke(BeanELResolver.java:536) at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:256) at com.sun.el.parser.AstValue.invoke(AstValue.java:269) at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:304) at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40) at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50) at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105) at org.primefaces.component.poll.Poll.broadcast(Poll.java:216) at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790) at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282) at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188) at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191) at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168) at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189) at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288) at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206) at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136) at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114) at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838) at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113) at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115) at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55) at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135) at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564) at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544) at java.lang.Thread.run(Thread.java:724)]] [2013-11-25T10:53:24.658+0800] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=22 _ThreadName=Thread-3] [timeMillis: 1385348004658] [levelValue: 800] [[ Total CPU:0.0]] </code></pre> <p>Sorry for my poor English.</p> <p>And thanks in advance.</p>
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