sun.jvmstat.monitor.MonitoredVmUtil Java Examples

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;
    }
}
 

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;
    }
}
 

public static void main(String[] args) throws IOException,
        MonitorException, URISyntaxException {
    LingeredApp app = null;
    try {
        List<String> vmArgs = new ArrayList<String>();
        vmArgs.add("-XX:+UsePerfData");
        vmArgs.addAll(Utils.getVmOptions());
        app = LingeredApp.startApp(vmArgs);

        MonitoredHost localHost = MonitoredHost.getMonitoredHost("localhost");
        String uriString = "//" + app.getPid() + "?mode=r"; // NOI18N
        VmIdentifier vmId = new VmIdentifier(uriString);
        MonitoredVm vm = localHost.getMonitoredVm(vmId);
        System.out.println("Monitored vm command line: " + MonitoredVmUtil.commandLine(vm));

        vm.setInterval(INTERVAL);
        localHost.setInterval(INTERVAL);

        Asserts.assertEquals(vm.getInterval(), INTERVAL, "Monitored vm interval should be equal the test value");
        Asserts.assertEquals(localHost.getInterval(), INTERVAL, "Monitored host interval should be equal the test value");
    } finally {
        LingeredApp.stopApp(app);
    }

}
 

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;
    }
}
 

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;
    }
}
 

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;
    }
}
 

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;
    }
}
 

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;
    }
}
 

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;
    }
}
 

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;
    }
}
 

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;
    }
}
 

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;
    }
}
 

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;
    }
}
 

/**
 * Test if a VM is attachable. If it's not attachable,
 * an AttachNotSupportedException will be thrown. For example,
 * 1.4.2 or 5.0 VM are not attachable. There are cases that
 * we can't determine if a VM is attachable or not and this method
 * will just return.
 *
 * This method uses the jvmstat counter to determine if a VM
 * is attachable. If the target VM does not have a jvmstat
 * share memory buffer, this method returns.
 *
 * @exception AttachNotSupportedException if it's not attachable
 */
void testAttachable(String id) throws AttachNotSupportedException {
    MonitoredVm mvm = null;
    try {
        VmIdentifier vmid = new VmIdentifier(id);
        MonitoredHost host = MonitoredHost.getMonitoredHost(vmid);
        mvm = host.getMonitoredVm(vmid);

        if (MonitoredVmUtil.isAttachable(mvm)) {
            // it's attachable; so return false
            return;
        }
    } catch (Throwable t) {
        if (t instanceof ThreadDeath) {
            ThreadDeath td = (ThreadDeath)t;
            throw td;
        }
        // we do not know what this id is
        return;
    } finally {
        if (mvm != null) {
            mvm.detach();
        }
    }

    // we're sure it's not attachable; throw exception
    throw new AttachNotSupportedException(
              "The VM does not support the attach mechanism");
}
 

/**
 * Test if a VM is attachable. If it's not attachable, an AttachNotSupportedException will be thrown. For example, 1.4.2 or 5.0 VM are not attachable. There are cases that we can't determine if a VM is attachable or not and this method will just return.
 *
 * This method uses the jvmstat counter to determine if a VM is attachable. If the target VM does not have a jvmstat share memory buffer, this method returns.
 *
 * @exception AttachNotSupportedException
 *                if it's not attachable
 */
void testAttachable(String id) throws AttachNotSupportedException {
	MonitoredVm mvm = null;
	try {
		VmIdentifier vmid = new VmIdentifier(id);
		MonitoredHost host = MonitoredHost.getMonitoredHost(vmid);
		mvm = host.getMonitoredVm(vmid);

		if (MonitoredVmUtil.isAttachable(mvm)) {
			// it's attachable; so return false
			return;
		}
	} catch (Throwable t) {
		if (t instanceof ThreadDeath) {
			ThreadDeath td = (ThreadDeath) t;
			throw td;
		}
		// we do not know what this id is
		return;
	} finally {
		if (mvm != null) {
			mvm.detach();
		}
	}

	// we're sure it's not attachable; throw exception
	throw new AttachNotSupportedException("The VM does not support the attach mechanism");
}
 

/**
 * Test if a VM is attachable. If it's not attachable,
 * an AttachNotSupportedException will be thrown. For example,
 * 1.4.2 or 5.0 VM are not attachable. There are cases that
 * we can't determine if a VM is attachable or not and this method
 * will just return.
 *
 * This method uses the jvmstat counter to determine if a VM
 * is attachable. If the target VM does not have a jvmstat
 * share memory buffer, this method returns.
 *
 * @exception AttachNotSupportedException if it's not attachable
 */
void testAttachable(String id) throws AttachNotSupportedException {
    MonitoredVm mvm = null;
    try {
        VmIdentifier vmid = new VmIdentifier(id);
        MonitoredHost host = MonitoredHost.getMonitoredHost(vmid);
        mvm = host.getMonitoredVm(vmid);

        if (MonitoredVmUtil.isAttachable(mvm)) {
            // it's attachable; so return false
            return;
        }
    } catch (Throwable t) {
        if (t instanceof ThreadDeath) {
            ThreadDeath td = (ThreadDeath)t;
            throw td;
        }
        // we do not know what this id is
        return;
    } finally {
        if (mvm != null) {
            mvm.detach();
        }
    }

    // we're sure it's not attachable; throw exception
    throw new AttachNotSupportedException(
              "The VM does not support the attach mechanism");
}
 

/**
 * Test if a VM is attachable. If it's not attachable,
 * an AttachNotSupportedException will be thrown. For example,
 * 1.4.2 or 5.0 VM are not attachable. There are cases that
 * we can't determine if a VM is attachable or not and this method
 * will just return.
 *
 * This method uses the jvmstat counter to determine if a VM
 * is attachable. If the target VM does not have a jvmstat
 * share memory buffer, this method returns.
 *
 * @exception AttachNotSupportedException if it's not attachable
 */
void testAttachable(String id) throws AttachNotSupportedException {
    MonitoredVm mvm = null;
    try {
        VmIdentifier vmid = new VmIdentifier(id);
        MonitoredHost host = MonitoredHost.getMonitoredHost(vmid);
        mvm = host.getMonitoredVm(vmid);

        if (MonitoredVmUtil.isAttachable(mvm)) {
            // it's attachable; so return false
            return;
        }
    } catch (Throwable t) {
        if (t instanceof ThreadDeath) {
            ThreadDeath td = (ThreadDeath)t;
            throw td;
        }
        // we do not know what this id is
        return;
    } finally {
        if (mvm != null) {
            mvm.detach();
        }
    }

    // we're sure it's not attachable; throw exception
    throw new AttachNotSupportedException(
              "The VM does not support the attach mechanism");
}
 

private boolean hasMainArgs(Integer id, String args) {
    try {
        VmIdentifier vmid = new VmIdentifier("//" + id.intValue());
        MonitoredVm target = host.getMonitoredVm(vmid);
        String monitoredArgs = MonitoredVmUtil.mainArgs(target);
        if (monitoredArgs != null && monitoredArgs.contains(args)) {
            return true;
        }
    } catch (URISyntaxException | MonitorException e) {
        // ok. process probably not running
    }
    return false;
}
 

private static void getMonitoredVMs(Map<Integer, LocalVirtualMachine> map) {
    MonitoredHost host;
    Set vms;
    try {
        host = MonitoredHost.getMonitoredHost(new HostIdentifier((String)null));
        vms = host.activeVms();
    } catch (java.net.URISyntaxException sx) {
        throw new InternalError(sx.getMessage());
    } catch (MonitorException mx) {
        throw new InternalError(mx.getMessage());
    }
    for (Object vmid: vms) {
        if (vmid instanceof Integer) {
            int pid = ((Integer) vmid).intValue();
            String name = vmid.toString(); // default to pid if name not available
            boolean attachable = false;
            String address = null;
            try {
                 MonitoredVm mvm = host.getMonitoredVm(new VmIdentifier(name));
                 // use the command line as the display name
                 name =  MonitoredVmUtil.commandLine(mvm);
                 attachable = MonitoredVmUtil.isAttachable(mvm);
                 address = ConnectorAddressLink.importFrom(pid);
                 mvm.detach();
            } catch (Exception x) {
                 // ignore
            }
            map.put((Integer) vmid, 
                    new LocalVirtualMachine(pid, name, attachable, address));
        }
    }
}
 

/**
 * Test if a VM is attachable. If it's not attachable,
 * an AttachNotSupportedException will be thrown. For example,
 * 1.4.2 or 5.0 VM are not attachable. There are cases that
 * we can't determine if a VM is attachable or not and this method
 * will just return.
 *
 * This method uses the jvmstat counter to determine if a VM
 * is attachable. If the target VM does not have a jvmstat
 * share memory buffer, this method returns.
 *
 * @exception AttachNotSupportedException if it's not attachable
 */
void testAttachable(String id) throws AttachNotSupportedException {
    MonitoredVm mvm = null;
    try {
        VmIdentifier vmid = new VmIdentifier(id);
        MonitoredHost host = MonitoredHost.getMonitoredHost(vmid);
        mvm = host.getMonitoredVm(vmid);

        if (MonitoredVmUtil.isAttachable(mvm)) {
            // it's attachable; so return false
            return;
        }
    } catch (Throwable t) {
        if (t instanceof ThreadDeath) {
            ThreadDeath td = (ThreadDeath)t;
            throw td;
        }
        // we do not know what this id is
        return;
    } finally {
        if (mvm != null) {
            mvm.detach();
        }
    }

    // we're sure it's not attachable; throw exception
    throw new AttachNotSupportedException(
              "The VM does not support the attach mechanism");
}
 

private boolean hasMainArgs(Integer id, String args) {
    try {
        VmIdentifier vmid = new VmIdentifier("//" + id.intValue());
        MonitoredVm target = host.getMonitoredVm(vmid);
        String monitoredArgs = MonitoredVmUtil.mainArgs(target);
        if (monitoredArgs != null && monitoredArgs.contains(args)) {
            return true;
        }
    } catch (URISyntaxException | MonitorException e) {
        // ok. process probably not running
    }
    return false;
}
 

/**
 * Kill all Jvm runned by {#link IgniteNodeRunner}. Works based on jps command.
 *
 * @return List of killed process ids.
 * @throws Exception If exception.
 */
public static List<Integer> killAll() throws Exception {
    MonitoredHost monitoredHost = MonitoredHost.getMonitoredHost(new HostIdentifier("localhost"));

    Set<Integer> jvms = monitoredHost.activeVms();

    List<Integer> res = new ArrayList<>();

    for (Integer jvmId : jvms) {
        try {
            MonitoredVm vm = monitoredHost.getMonitoredVm(new VmIdentifier("//" + jvmId + "?mode=r"), 0);

            if (IgniteNodeRunner.class.getName().equals(MonitoredVmUtil.mainClass(vm, true))) {
                Process killProc = Runtime.getRuntime().exec(U.isWindows() ?
                    new String[] {"taskkill", "/pid", jvmId.toString(), "/f", "/t"} :
                    new String[] {"kill", "-9", jvmId.toString()});

                killProc.waitFor();

                res.add(jvmId);
            }
        }
        catch (Exception e) {
            // Print stack trace just for information.
            X.printerrln("Could not kill IgniteNodeRunner java processes. Jvm pid = " + jvmId, e);
        }
    }

    return res;
}
 

/**
 * Test if a VM is attachable. If it's not attachable,
 * an AttachNotSupportedException will be thrown. For example,
 * 1.4.2 or 5.0 VM are not attachable. There are cases that
 * we can't determine if a VM is attachable or not and this method
 * will just return.
 *
 * This method uses the jvmstat counter to determine if a VM
 * is attachable. If the target VM does not have a jvmstat
 * share memory buffer, this method returns.
 *
 * @exception AttachNotSupportedException if it's not attachable
 */
void testAttachable(String id) throws AttachNotSupportedException {
    MonitoredVm mvm = null;
    try {
        VmIdentifier vmid = new VmIdentifier(id);
        MonitoredHost host = MonitoredHost.getMonitoredHost(vmid);
        mvm = host.getMonitoredVm(vmid);

        if (MonitoredVmUtil.isAttachable(mvm)) {
            // it's attachable; so return false
            return;
        }
    } catch (Throwable t) {
        if (t instanceof ThreadDeath) {
            ThreadDeath td = (ThreadDeath)t;
            throw td;
        }
        // we do not know what this id is
        return;
    } finally {
        if (mvm != null) {
            mvm.detach();
        }
    }

    // we're sure it's not attachable; throw exception
    throw new AttachNotSupportedException(
              "The VM does not support the attach mechanism");
}
 

private boolean hasMainArgs(Integer id, String args) {
    try {
        VmIdentifier vmid = new VmIdentifier("//" + id.intValue());
        MonitoredVm target = host.getMonitoredVm(vmid);
        String monitoredArgs = MonitoredVmUtil.mainArgs(target);
        if (monitoredArgs != null && monitoredArgs.contains(args)) {
            return true;
        }
    } catch (URISyntaxException | MonitorException e) {
        // ok. process probably not running
    }
    return false;
}
 

/**
 * Test if a VM is attachable. If it's not attachable,
 * an AttachNotSupportedException will be thrown. For example,
 * 1.4.2 or 5.0 VM are not attachable. There are cases that
 * we can't determine if a VM is attachable or not and this method
 * will just return.
 *
 * This method uses the jvmstat counter to determine if a VM
 * is attachable. If the target VM does not have a jvmstat
 * share memory buffer, this method returns.
 *
 * @exception AttachNotSupportedException if it's not attachable
 */
void testAttachable(String id) throws AttachNotSupportedException {
    MonitoredVm mvm = null;
    try {
        VmIdentifier vmid = new VmIdentifier(id);
        MonitoredHost host = MonitoredHost.getMonitoredHost(vmid);
        mvm = host.getMonitoredVm(vmid);

        if (MonitoredVmUtil.isAttachable(mvm)) {
            // it's attachable; so return false
            return;
        }
    } catch (Throwable t) {
        if (t instanceof ThreadDeath) {
            ThreadDeath td = (ThreadDeath)t;
            throw td;
        }
        // we do not know what this id is
        return;
    } finally {
        if (mvm != null) {
            mvm.detach();
        }
    }

    // we're sure it's not attachable; throw exception
    throw new AttachNotSupportedException(
              "The VM does not support the attach mechanism");
}
 

/**
 * Test if a VM is attachable. If it's not attachable,
 * an AttachNotSupportedException will be thrown. For example,
 * 1.4.2 or 5.0 VM are not attachable. There are cases that
 * we can't determine if a VM is attachable or not and this method
 * will just return.
 *
 * This method uses the jvmstat counter to determine if a VM
 * is attachable. If the target VM does not have a jvmstat
 * share memory buffer, this method returns.
 *
 * @exception AttachNotSupportedException if it's not attachable
 */
void testAttachable(String id) throws AttachNotSupportedException {
    MonitoredVm mvm = null;
    try {
        VmIdentifier vmid = new VmIdentifier(id);
        MonitoredHost host = MonitoredHost.getMonitoredHost(vmid);
        mvm = host.getMonitoredVm(vmid);

        if (MonitoredVmUtil.isAttachable(mvm)) {
            // it's attachable; so return false
            return;
        }
    } catch (Throwable t) {
        if (t instanceof ThreadDeath) {
            ThreadDeath td = (ThreadDeath)t;
            throw td;
        }
        // we do not know what this id is
        return;
    } finally {
        if (mvm != null) {
            mvm.detach();
        }
    }

    // we're sure it's not attachable; throw exception
    throw new AttachNotSupportedException(
              "The VM does not support the attach mechanism");
}
 

private boolean hasMainArgs(Integer id, String args) {
    try {
        VmIdentifier vmid = new VmIdentifier("//" + id.intValue());
        MonitoredVm target = host.getMonitoredVm(vmid);
        String monitoredArgs = MonitoredVmUtil.mainArgs(target);
        if (monitoredArgs != null && monitoredArgs.contains(args)) {
            return true;
        }
    } catch (URISyntaxException | MonitorException e) {
        // ok. process probably not running
    }
    return false;
}
 

/**
 * Test if a VM is attachable. If it's not attachable,
 * an AttachNotSupportedException will be thrown. For example,
 * 1.4.2 or 5.0 VM are not attachable. There are cases that
 * we can't determine if a VM is attachable or not and this method
 * will just return.
 *
 * This method uses the jvmstat counter to determine if a VM
 * is attachable. If the target VM does not have a jvmstat
 * share memory buffer, this method returns.
 *
 * @exception AttachNotSupportedException if it's not attachable
 */
void testAttachable(String id) throws AttachNotSupportedException {
    MonitoredVm mvm = null;
    try {
        VmIdentifier vmid = new VmIdentifier(id);
        MonitoredHost host = MonitoredHost.getMonitoredHost(vmid);
        mvm = host.getMonitoredVm(vmid);

        if (MonitoredVmUtil.isAttachable(mvm)) {
            // it's attachable; so return false
            return;
        }
    } catch (Throwable t) {
        if (t instanceof ThreadDeath) {
            ThreadDeath td = (ThreadDeath)t;
            throw td;
        }
        // we do not know what this id is
        return;
    } finally {
        if (mvm != null) {
            mvm.detach();
        }
    }

    // we're sure it's not attachable; throw exception
    throw new AttachNotSupportedException(
              "The VM does not support the attach mechanism");
}
 

private boolean hasMainArgs(Integer id, String args) {
    try {
        VmIdentifier vmid = new VmIdentifier("//" + id.intValue());
        MonitoredVm target = host.getMonitoredVm(vmid);
        String monitoredArgs = MonitoredVmUtil.mainArgs(target);
        if (monitoredArgs != null && monitoredArgs.contains(args)) {
            return true;
        }
    } catch (URISyntaxException | MonitorException e) {
        // ok. process probably not running
    }
    return false;
}
 

/**
 * Test if a VM is attachable. If it's not attachable,
 * an AttachNotSupportedException will be thrown. For example,
 * 1.4.2 or 5.0 VM are not attachable. There are cases that
 * we can't determine if a VM is attachable or not and this method
 * will just return.
 *
 * This method uses the jvmstat counter to determine if a VM
 * is attachable. If the target VM does not have a jvmstat
 * share memory buffer, this method returns.
 *
 * @exception AttachNotSupportedException if it's not attachable
 */
void testAttachable(String id) throws AttachNotSupportedException {
    MonitoredVm mvm = null;
    try {
        VmIdentifier vmid = new VmIdentifier(id);
        MonitoredHost host = MonitoredHost.getMonitoredHost(vmid);
        mvm = host.getMonitoredVm(vmid);

        if (MonitoredVmUtil.isAttachable(mvm)) {
            // it's attachable; so return false
            return;
        }
    } catch (Throwable t) {
        if (t instanceof ThreadDeath) {
            ThreadDeath td = (ThreadDeath)t;
            throw td;
        }
        // we do not know what this id is
        return;
    } finally {
        if (mvm != null) {
            mvm.detach();
        }
    }

    // we're sure it's not attachable; throw exception
    throw new AttachNotSupportedException(
              "The VM does not support the attach mechanism");
}