1 /*
2  * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
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7  * published by the Free Software Foundation.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
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11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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24  */
25 package sun.tools.attach;
26 
27 import com.sun.tools.attach.VirtualMachine;
28 import com.sun.tools.attach.VirtualMachineDescriptor;
29 import com.sun.tools.attach.AttachNotSupportedException;
30 import com.sun.tools.attach.spi.AttachProvider;
31 
32 import java.io.IOException;
33 
34 /*
35  * An AttachProvider implementation for Linux that uses a UNIX domain
36  * socket.
37  */
38 public class LinuxAttachProvider extends HotSpotAttachProvider {
39 
40     // perf counter for the JVM version
41     private static final String JVM_VERSION = "java.property.java.vm.version";
42 
LinuxAttachProvider()43     public LinuxAttachProvider() {
44     }
45 
name()46     public String name() {
47         return "sun";
48     }
49 
type()50     public String type() {
51         return "socket";
52     }
53 
attachVirtualMachine(String vmid)54     public VirtualMachine attachVirtualMachine(String vmid)
55         throws AttachNotSupportedException, IOException
56     {
57         checkAttachPermission();
58 
59         // AttachNotSupportedException will be thrown if the target VM can be determined
60         // to be not attachable.
61         testAttachable(vmid);
62 
63         return new LinuxVirtualMachine(this, vmid);
64     }
65 
attachVirtualMachine(VirtualMachineDescriptor vmd)66     public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd)
67         throws AttachNotSupportedException, IOException
68     {
69         if (vmd.provider() != this) {
70             throw new AttachNotSupportedException("provider mismatch");
71         }
72         // To avoid re-checking if the VM if attachable, we check if the descriptor
73         // is for a hotspot VM - these descriptors are created by the listVirtualMachines
74         // implementation which only returns a list of attachable VMs.
75         if (vmd instanceof HotSpotVirtualMachineDescriptor) {
76             assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable();
77             checkAttachPermission();
78             return new LinuxVirtualMachine(this, vmd.id());
79         } else {
80             return attachVirtualMachine(vmd.id());
81         }
82     }
83 
84 }
85