com.sun.tools.attach.VirtualMachineDescriptor Java Examples
The following examples show how to use
com.sun.tools.attach.VirtualMachineDescriptor.
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Example #1
Source File: BsdAttachProvider.java From jdk8u_jdk with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new BsdVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #2
Source File: LinuxAttachProvider.java From TencentKona-8 with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new LinuxVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #3
Source File: LinuxAttachProvider.java From openjdk-8 with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new LinuxVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #4
Source File: SolarisAttachProvider.java From jdk8u-jdk with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new SolarisVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #5
Source File: JCmd.java From dragonwell8_jdk with GNU General Public License v2.0 | 6 votes |
private static String getMainClass(VirtualMachineDescriptor vmd) throws URISyntaxException, MonitorException { try { String mainClass = null; VmIdentifier vmId = new VmIdentifier(vmd.id()); MonitoredHost monitoredHost = MonitoredHost.getMonitoredHost(vmId); MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(vmId, -1); mainClass = MonitoredVmUtil.mainClass(monitoredVm, true); monitoredHost.detach(monitoredVm); return mainClass; } catch(NullPointerException e) { // There is a potential race, where a running java app is being // queried, unfortunately the java app has shutdown after this // method is started but before getMonitoredVM is called. // If this is the case, then the /tmp/hsperfdata_xxx/pid file // will have disappeared and we will get a NullPointerException. // Handle this gracefully.... return null; } }
Example #6
Source File: SolarisAttachProvider.java From dragonwell8_jdk with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new SolarisVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #7
Source File: LinuxAttachProvider.java From jdk8u-jdk with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new LinuxVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #8
Source File: LinuxAttachProvider.java From jdk8u_jdk with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new LinuxVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #9
Source File: JCmd.java From jdk8u60 with GNU General Public License v2.0 | 6 votes |
private static String getMainClass(VirtualMachineDescriptor vmd) throws URISyntaxException, MonitorException { try { String mainClass = null; VmIdentifier vmId = new VmIdentifier(vmd.id()); MonitoredHost monitoredHost = MonitoredHost.getMonitoredHost(vmId); MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(vmId, -1); mainClass = MonitoredVmUtil.mainClass(monitoredVm, true); monitoredHost.detach(monitoredVm); return mainClass; } catch(NullPointerException e) { // There is a potential race, where a running java app is being // queried, unfortunately the java app has shutdown after this // method is started but before getMonitoredVM is called. // If this is the case, then the /tmp/hsperfdata_xxx/pid file // will have disappeared and we will get a NullPointerException. // Handle this gracefully.... return null; } }
Example #10
Source File: SolarisAttachProvider.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new SolarisVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #11
Source File: SolarisAttachProvider.java From jdk8u60 with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new SolarisVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #12
Source File: BsdAttachProvider.java From jdk8u60 with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new BsdVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #13
Source File: LinuxAttachProvider.java From jdk8u60 with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new LinuxVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #14
Source File: AixAttachProvider.java From jdk8u60 with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new AixVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #15
Source File: JCmd.java From openjdk-jdk8u with GNU General Public License v2.0 | 6 votes |
private static String getMainClass(VirtualMachineDescriptor vmd) throws URISyntaxException, MonitorException { try { String mainClass = null; VmIdentifier vmId = new VmIdentifier(vmd.id()); MonitoredHost monitoredHost = MonitoredHost.getMonitoredHost(vmId); MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(vmId, -1); mainClass = MonitoredVmUtil.mainClass(monitoredVm, true); monitoredHost.detach(monitoredVm); return mainClass; } catch(NullPointerException e) { // There is a potential race, where a running java app is being // queried, unfortunately the java app has shutdown after this // method is started but before getMonitoredVM is called. // If this is the case, then the /tmp/hsperfdata_xxx/pid file // will have disappeared and we will get a NullPointerException. // Handle this gracefully.... return null; } }
Example #16
Source File: JCmd.java From hottub with GNU General Public License v2.0 | 6 votes |
private static String getMainClass(VirtualMachineDescriptor vmd) throws URISyntaxException, MonitorException { try { String mainClass = null; VmIdentifier vmId = new VmIdentifier(vmd.id()); MonitoredHost monitoredHost = MonitoredHost.getMonitoredHost(vmId); MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(vmId, -1); mainClass = MonitoredVmUtil.mainClass(monitoredVm, true); monitoredHost.detach(monitoredVm); return mainClass; } catch(NullPointerException e) { // There is a potential race, where a running java app is being // queried, unfortunately the java app has shutdown after this // method is started but before getMonitoredVM is called. // If this is the case, then the /tmp/hsperfdata_xxx/pid file // will have disappeared and we will get a NullPointerException. // Handle this gracefully.... return null; } }
Example #17
Source File: BsdAttachProvider.java From openjdk-jdk8u with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new BsdVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #18
Source File: LinuxAttachProvider.java From openjdk-jdk8u with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new LinuxVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #19
Source File: BsdAttachProvider.java From openjdk-8 with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new BsdVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #20
Source File: AixAttachProvider.java From hottub with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new AixVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #21
Source File: BsdAttachProvider.java From jdk8u-jdk with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new BsdVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #22
Source File: SolarisAttachProvider.java From hottub with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new SolarisVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #23
Source File: LinuxAttachProvider.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new LinuxVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #24
Source File: AixAttachProvider.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new AixVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #25
Source File: JCmd.java From openjdk-8 with GNU General Public License v2.0 | 6 votes |
private static String getMainClass(VirtualMachineDescriptor vmd) throws URISyntaxException, MonitorException { try { String mainClass = null; VmIdentifier vmId = new VmIdentifier(vmd.id()); MonitoredHost monitoredHost = MonitoredHost.getMonitoredHost(vmId); MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(vmId, -1); mainClass = MonitoredVmUtil.mainClass(monitoredVm, true); monitoredHost.detach(monitoredVm); return mainClass; } catch(NullPointerException e) { // There is a potential race, where a running java app is being // queried, unfortunately the java app has shutdown after this // method is started but before getMonitoredVM is called. // If this is the case, then the /tmp/hsperfdata_xxx/pid file // will have disappeared and we will get a NullPointerException. // Handle this gracefully.... return null; } }
Example #26
Source File: JCmd.java From jdk8u-jdk with GNU General Public License v2.0 | 6 votes |
private static String getMainClass(VirtualMachineDescriptor vmd) throws URISyntaxException, MonitorException { try { String mainClass = null; VmIdentifier vmId = new VmIdentifier(vmd.id()); MonitoredHost monitoredHost = MonitoredHost.getMonitoredHost(vmId); MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(vmId, -1); mainClass = MonitoredVmUtil.mainClass(monitoredVm, true); monitoredHost.detach(monitoredVm); return mainClass; } catch(NullPointerException e) { // There is a potential race, where a running java app is being // queried, unfortunately the java app has shutdown after this // method is started but before getMonitoredVM is called. // If this is the case, then the /tmp/hsperfdata_xxx/pid file // will have disappeared and we will get a NullPointerException. // Handle this gracefully.... return null; } }
Example #27
Source File: JMXConnection.java From OpenFalcon-SuitAgent with Apache License 2.0 | 6 votes |
private JMXConnectUrlInfo getConnectorAddress(VirtualMachineDescriptor desc){ if(AgentConfiguration.INSTANCE.isAgentJMXLocalConnect()){ String connectorAddress = AbstractJmxCommand.findJMXLocalUrlByProcessId(Integer.parseInt(desc.id())); if(connectorAddress != null){ return new JMXConnectUrlInfo(connectorAddress); } } JMXConnectUrlInfo jmxConnectUrlInfo = null; try { jmxConnectUrlInfo = AbstractJmxCommand.findJMXRemoteUrlByProcessId(Integer.parseInt(desc.id()), InetAddress.getLocalHost().getHostAddress()); if(jmxConnectUrlInfo != null){ log.info("JMX Remote URL:{}",jmxConnectUrlInfo); }else if(!AgentConfiguration.INSTANCE.isAgentJMXLocalConnect()){ log.warn("应用未配置JMX Remote功能,请给应用配置JMX Remote"); } } catch (UnknownHostException e) { log.error("JMX连接本机地址获取失败",e); } return jmxConnectUrlInfo; }
Example #28
Source File: LinuxAttachProvider.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new LinuxVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #29
Source File: LinuxAttachProvider.java From openjdk-8-source with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new LinuxVirtualMachine(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }
Example #30
Source File: AttachProviderImpl.java From openjdk-jdk9 with GNU General Public License v2.0 | 6 votes |
public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd) throws AttachNotSupportedException, IOException { if (vmd.provider() != this) { throw new AttachNotSupportedException("provider mismatch"); } // To avoid re-checking if the VM if attachable, we check if the descriptor // is for a hotspot VM - these descriptors are created by the listVirtualMachines // implementation which only returns a list of attachable VMs. if (vmd instanceof HotSpotVirtualMachineDescriptor) { assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable(); checkAttachPermission(); return new VirtualMachineImpl(this, vmd.id()); } else { return attachVirtualMachine(vmd.id()); } }