Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/debugger/ThreadAccess.java @ 1913:3b2dea75431e
6984311: JSR 292 needs optional bootstrap method parameters
Summary: Allow CONSTANT_InvokeDynamic nodes to have any number of extra operands.
Reviewed-by: twisti
author | jrose |
---|---|
date | Sat, 30 Oct 2010 13:08:23 -0700 |
parents | c18cbe5936b8 |
children |
rev | line source |
---|---|
0 | 1 /* |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
2 * Copyright (c) 2000, 2003, Oracle and/or its affiliates. All rights reserved. |
0 | 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. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.debugger; | |
26 | |
27 /** <P> This interface abstracts over access to operating system-level | |
28 threads in the underlying process. It is designed to be minimal | |
29 and generic to allow cross-platform compatibility. </P> | |
30 | |
31 <P> The basic operation this interface supports is creating a | |
32 sun.jvm.hotspot.debugger.ThreadProxy "token" for an existing | |
33 thread. As an example, the HotSpot VM contains a list of Java | |
34 threads, encapsulated in VM-specific JavaThread objects. Each of | |
35 these contains a platform-dependent field with the OS-level thread | |
36 identifier; on Solaris, this field's type is "thread_t", while on | |
37 Windows, it is HANDLE. It is necessary to be able to map from | |
38 these fields to a ThreadProxy object, in particular to be able to | |
39 get the thread's context. However, since the types of these fields | |
40 vary greatly from OS to OS (some use integers as thread IDs, some | |
41 use pointers as thread handles) it is not possible to define one | |
42 particular type (Address, long) in this interface as the lookup | |
43 "key" for a Thread. </P> | |
44 | |
45 <P> For this reason this mapping mechanism takes the Address of | |
46 the memory location containing the thread identifier. On Solaris, | |
47 this is the address of a location containing a thread_t; on | |
48 Windows, this is the address of a location containing a HANDLE for | |
49 a thread. On Linux, this is the address of a location containing a | |
50 pthread_t.</P> | |
51 | |
52 <P> The {@link sun.jvm.hotspot.debugger.cdbg.CDebugger} interface | |
53 provides access to the entire thread list of the target process, | |
54 but this is optional functionality not required to get the SA to | |
55 work. </P> */ | |
56 | |
57 public interface ThreadAccess { | |
58 /** Gets an abstract ThreadProxy object for the thread identified by | |
59 the contents of the memory location pointed to by addr. The | |
60 contents at location addr are inherently platform-dependent; see | |
61 the documentation for this class for more information. FIXME: | |
62 what exception, if any, should this throw? */ | |
63 public ThreadProxy getThreadForIdentifierAddress(Address addr); | |
64 | |
65 /** Gets an abstract ThreadProxy object for the thread identified by | |
66 id or handle that is platform dependent */ | |
67 public ThreadProxy getThreadForThreadId(long id); | |
68 } |