| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.tools.common; |
| |
| import java.net.URISyntaxException; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| |
| import com.sun.tools.attach.VirtualMachine; |
| import com.sun.tools.attach.VirtualMachineDescriptor; |
| |
| import sun.jvmstat.monitor.MonitorException; |
| import sun.jvmstat.monitor.MonitoredHost; |
| import sun.jvmstat.monitor.MonitoredVm; |
| import sun.jvmstat.monitor.MonitoredVmUtil; |
| import sun.jvmstat.monitor.VmIdentifier; |
| |
| /** |
| * Class for finding process matching a process argument, |
| * excluding tool it self and returning a list containing |
| * the process identifiers. |
| */ |
| public class ProcessArgumentMatcher { |
| private String matchClass; |
| private String singlePid; |
| |
| public ProcessArgumentMatcher(String pidArg) { |
| if (pidArg == null || pidArg.isEmpty()) { |
| throw new IllegalArgumentException("Pid string is invalid"); |
| } |
| if (pidArg.charAt(0) == '-') { |
| throw new IllegalArgumentException("Unrecognized " + pidArg); |
| } |
| try { |
| long pid = Long.parseLong(pidArg); |
| if (pid != 0) { |
| singlePid = String.valueOf(pid); |
| } |
| } catch (NumberFormatException nfe) { |
| matchClass = pidArg; |
| } |
| } |
| |
| private static String getExcludeStringFrom(Class<?> excludeClass) { |
| if (excludeClass == null) { |
| return ""; |
| } |
| Module m = excludeClass.getModule(); |
| if (m.isNamed()) { |
| return m.getName() + "/" + excludeClass.getName(); |
| } |
| return excludeClass.getName(); |
| } |
| |
| private static boolean check(VirtualMachineDescriptor vmd, String excludeClass, String partialMatch) { |
| String mainClass = null; |
| try { |
| 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); |
| } catch (NullPointerException npe) { |
| // 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 false; |
| } catch (MonitorException | URISyntaxException e) { |
| return false; |
| } |
| |
| if (excludeClass != null && mainClass.equals(excludeClass)) { |
| return false; |
| } |
| |
| if (partialMatch != null && mainClass.indexOf(partialMatch) == -1) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| private static Collection<VirtualMachineDescriptor> getSingleVMD(String pid) { |
| Collection<VirtualMachineDescriptor> vids = new ArrayList<>(); |
| List<VirtualMachineDescriptor> vmds = VirtualMachine.list(); |
| for (VirtualMachineDescriptor vmd : vmds) { |
| if (check(vmd, null, null)) { |
| if (pid.equals(vmd.id())) { |
| vids.add(vmd); |
| } |
| } |
| } |
| return vids; |
| } |
| |
| private static Collection<VirtualMachineDescriptor> getVMDs(Class<?> excludeClass, String partialMatch) { |
| String excludeCls = getExcludeStringFrom(excludeClass); |
| Collection<VirtualMachineDescriptor> vids = new ArrayList<>(); |
| List<VirtualMachineDescriptor> vmds = VirtualMachine.list(); |
| for (VirtualMachineDescriptor vmd : vmds) { |
| if (check(vmd, excludeCls, partialMatch)) { |
| vids.add(vmd); |
| } |
| } |
| return vids; |
| } |
| |
| public Collection<VirtualMachineDescriptor> getVirtualMachineDescriptors(Class<?> excludeClass) { |
| if (singlePid != null) { |
| return getSingleVMD(singlePid); |
| } else { |
| return getVMDs(excludeClass, matchClass); |
| } |
| } |
| |
| public Collection<VirtualMachineDescriptor> getVirtualMachineDescriptors() { |
| return this.getVirtualMachineDescriptors(null); |
| } |
| |
| public Collection<String> getVirtualMachinePids(Class<?> excludeClass) { |
| if (singlePid != null) { |
| // There is a bug in AttachProvider, when VM is debuggee-suspended it's not listed by the AttachProvider. |
| // If we are talking about a specific pid, just return it. |
| return List.of(singlePid); |
| } else { |
| return getVMDs(excludeClass, matchClass).stream().map(x -> {return x.id();}).collect(Collectors.toList()); |
| } |
| } |
| |
| public Collection<String> getVirtualMachinePids() { |
| return this.getVirtualMachinePids(null); |
| } |
| } |