src/jdk.jcmd/share/classes/sun/tools/common/ProcessArgumentMatcher.java

rev 16854 : [mq]: 8176533_fix_all

@@ -28,10 +28,11 @@
 import java.lang.reflect.Module;
 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;

@@ -143,6 +144,19 @@
 
     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 debugge-suspened 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);
+    }
 }