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 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
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.
10 *
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.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25package sun.tools.attach;
26
27import com.sun.tools.attach.VirtualMachine;
28import com.sun.tools.attach.VirtualMachineDescriptor;
29import com.sun.tools.attach.AttachNotSupportedException;
30import java.io.IOException;
31
32/*
33 * An AttachProvider implementation for Linux that uses a UNIX domain
34 * socket.
35 */
36public class AttachProviderImpl extends HotSpotAttachProvider {
37
38    public AttachProviderImpl() {
39    }
40
41    public String name() {
42        return "sun";
43    }
44
45    public String type() {
46        return "socket";
47    }
48
49    public VirtualMachine attachVirtualMachine(String vmid)
50        throws AttachNotSupportedException, IOException
51    {
52        checkAttachPermission();
53
54        // AttachNotSupportedException will be thrown if the target VM can be determined
55        // to be not attachable.
56        testAttachable(vmid);
57
58        return new VirtualMachineImpl(this, vmid);
59    }
60
61    public VirtualMachine attachVirtualMachine(VirtualMachineDescriptor vmd)
62        throws AttachNotSupportedException, IOException
63    {
64        if (vmd.provider() != this) {
65            throw new AttachNotSupportedException("provider mismatch");
66        }
67        // To avoid re-checking if the VM if attachable, we check if the descriptor
68        // is for a hotspot VM - these descriptors are created by the listVirtualMachines
69        // implementation which only returns a list of attachable VMs.
70        if (vmd instanceof HotSpotVirtualMachineDescriptor) {
71            assert ((HotSpotVirtualMachineDescriptor)vmd).isAttachable();
72            checkAttachPermission();
73            return new VirtualMachineImpl(this, vmd.id());
74        } else {
75            return attachVirtualMachine(vmd.id());
76        }
77    }
78
79}
80