Mercurial > hg > graal-jvmci-8
annotate jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotJVMCIMetaAccessContext.java @ 23677:eb166b568645
Merge
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
---|---|
date | Thu, 09 Jun 2016 18:58:09 -0700 |
parents | d995c88d9cd9 |
children | 927a39cd7ddd |
rev | line source |
---|---|
22454
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
1 /* |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
4 * |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
5 * This code is free software; you can redistribute it and/or modify it |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
6 * under the terms of the GNU General Public License version 2 only, as |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
7 * published by the Free Software Foundation. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
8 * |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
9 * This code is distributed in the hope that it will be useful, but WITHOUT |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
12 * version 2 for more details (a copy is included in the LICENSE file that |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
13 * accompanied this code). |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
14 * |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
15 * You should have received a copy of the GNU General Public License version |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
16 * 2 along with this work; if not, write to the Free Software Foundation, |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
18 * |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
21 * questions. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
22 */ |
22672
1bbd4a7c274b
Rename jdk.internal.jvmci to jdk.vm.ci
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
22569
diff
changeset
|
23 package jdk.vm.ci.hotspot; |
22454
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
24 |
22569
ec96f33a101d
updated imports to be explicit and added checkstyle rule to forbid * imports
Doug Simon <doug.simon@oracle.com>
parents:
22536
diff
changeset
|
25 import java.lang.ref.Reference; |
ec96f33a101d
updated imports to be explicit and added checkstyle rule to forbid * imports
Doug Simon <doug.simon@oracle.com>
parents:
22536
diff
changeset
|
26 import java.lang.ref.ReferenceQueue; |
ec96f33a101d
updated imports to be explicit and added checkstyle rule to forbid * imports
Doug Simon <doug.simon@oracle.com>
parents:
22536
diff
changeset
|
27 import java.lang.ref.WeakReference; |
ec96f33a101d
updated imports to be explicit and added checkstyle rule to forbid * imports
Doug Simon <doug.simon@oracle.com>
parents:
22536
diff
changeset
|
28 import java.util.Arrays; |
ec96f33a101d
updated imports to be explicit and added checkstyle rule to forbid * imports
Doug Simon <doug.simon@oracle.com>
parents:
22536
diff
changeset
|
29 import java.util.Iterator; |
ec96f33a101d
updated imports to be explicit and added checkstyle rule to forbid * imports
Doug Simon <doug.simon@oracle.com>
parents:
22536
diff
changeset
|
30 import java.util.Map; |
ec96f33a101d
updated imports to be explicit and added checkstyle rule to forbid * imports
Doug Simon <doug.simon@oracle.com>
parents:
22536
diff
changeset
|
31 import java.util.WeakHashMap; |
22454
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
32 |
22672
1bbd4a7c274b
Rename jdk.internal.jvmci to jdk.vm.ci
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
22569
diff
changeset
|
33 import jdk.vm.ci.meta.JavaKind; |
1bbd4a7c274b
Rename jdk.internal.jvmci to jdk.vm.ci
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
22569
diff
changeset
|
34 import jdk.vm.ci.meta.ResolvedJavaType; |
22454
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
35 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
36 /** |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
37 * This class manages the set of metadata roots that must be scanned during garbage collection. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
38 * Because of class redefinition Method* and ConstantPool* can be freed if they don't appear to be |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
39 * in use so they must be tracked when there are live references to them from Java. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
40 * |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
41 * The general theory of operation is that all {@link MetaspaceWrapperObject}s are created by |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
42 * calling into the VM which calls back out to actually create the wrapper instance. During the call |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
43 * the VM keeps the metadata reference alive through the use of metadata handles. Once the call |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
44 * completes the wrapper object is registered here and will be scanned during metadata scanning. The |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
45 * weakness of the reference to the wrapper object allows them to be reclaimed when they are no |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
46 * longer used. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
47 * |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
48 */ |
23393
1d4ce2d19e52
clean up and minimize JVMCI (JDK-8156835)
Doug Simon <doug.simon@oracle.com>
parents:
22672
diff
changeset
|
49 public class HotSpotJVMCIMetaAccessContext { |
22454
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
50 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
51 /** |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
52 * The set of currently live contexts used for tracking of live metadata. Examined from the VM |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
53 * during garbage collection. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
54 */ |
22505
575eb1036ea9
fixed all existing -Xlint warnings
Doug Simon <doug.simon@oracle.com>
parents:
22454
diff
changeset
|
55 private static WeakReference<?>[] allContexts = new WeakReference<?>[0]; |
22454
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
56 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
57 /** |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
58 * This is a chunked list of metadata roots. It can be read from VM native code so it's been |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
59 * marked volatile to ensure the order of updates are respected. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
60 */ |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
61 private volatile Object[] metadataRoots; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
62 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
63 private ChunkedList<WeakReference<MetaspaceWrapperObject>> list = new ChunkedList<>(); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
64 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
65 /** |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
66 * The number of weak references freed since the last time the list was shrunk. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
67 */ |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
68 private int freed; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
69 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
70 /** |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
71 * The {@link ReferenceQueue} tracking the weak references created by this context. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
72 */ |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
73 private final ReferenceQueue<MetaspaceWrapperObject> queue = new ReferenceQueue<>(); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
74 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
75 static synchronized void add(HotSpotJVMCIMetaAccessContext context) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
76 for (int i = 0; i < allContexts.length; i++) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
77 if (allContexts[i] == null || allContexts[i].get() == null) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
78 allContexts[i] = new WeakReference<>(context); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
79 return; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
80 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
81 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
82 int index = allContexts.length; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
83 allContexts = Arrays.copyOf(allContexts, index + 2); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
84 allContexts[index] = new WeakReference<>(context); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
85 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
86 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
87 HotSpotJVMCIMetaAccessContext() { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
88 add(this); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
89 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
90 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
91 /** |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
92 * Periodically trim the list of tracked metadata. A new list is created to replace the old to |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
93 * avoid concurrent scanning issues. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
94 */ |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
95 private void clean() { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
96 Reference<?> ref = queue.poll(); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
97 if (ref == null) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
98 return; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
99 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
100 while (ref != null) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
101 freed++; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
102 ref = queue.poll(); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
103 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
104 if (freed > list.size() / 2) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
105 ChunkedList<WeakReference<MetaspaceWrapperObject>> newList = new ChunkedList<>(); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
106 for (WeakReference<MetaspaceWrapperObject> element : list) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
107 /* |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
108 * The referent could become null anywhere in here but it doesn't matter. It will |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
109 * get cleaned up next time. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
110 */ |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
111 if (element != null && element.get() != null) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
112 newList.add(element); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
113 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
114 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
115 list = newList; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
116 metadataRoots = list.getHead(); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
117 freed = 0; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
118 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
119 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
120 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
121 /** |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
122 * Add a {@link MetaspaceWrapperObject} to tracked by the GC. It's assumed that the caller is |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
123 * responsible for keeping the reference alive for the duration of the call. Once registration |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
124 * is complete then the VM will ensure it's kept alive. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
125 * |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
126 * @param metaspaceObject |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
127 */ |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
128 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
129 public synchronized void add(MetaspaceWrapperObject metaspaceObject) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
130 clean(); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
131 list.add(new WeakReference<>(metaspaceObject, queue)); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
132 if (list.getHead() != metadataRoots) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
133 /* |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
134 * The list enlarged so update the head. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
135 */ |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
136 metadataRoots = list.getHead(); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
137 } |
23677 | 138 assert isRegistered(metaspaceObject); |
22454
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
139 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
140 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
141 protected ResolvedJavaType createClass(Class<?> javaClass) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
142 if (javaClass.isPrimitive()) { |
22536
dc1aeef79e7e
Refactoring: Rename Kind to JavaKind.
Roland Schatz <roland.schatz@oracle.com>
parents:
22505
diff
changeset
|
143 JavaKind kind = JavaKind.fromJavaClass(javaClass); |
22454
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
144 return new HotSpotResolvedPrimitiveType(kind); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
145 } else { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
146 return new HotSpotResolvedObjectTypeImpl(javaClass, this); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
147 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
148 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
149 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
150 private final Map<Class<?>, WeakReference<ResolvedJavaType>> typeMap = new WeakHashMap<>(); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
151 |
23393
1d4ce2d19e52
clean up and minimize JVMCI (JDK-8156835)
Doug Simon <doug.simon@oracle.com>
parents:
22672
diff
changeset
|
152 /** |
1d4ce2d19e52
clean up and minimize JVMCI (JDK-8156835)
Doug Simon <doug.simon@oracle.com>
parents:
22672
diff
changeset
|
153 * Gets the JVMCI mirror for a {@link Class} object. |
1d4ce2d19e52
clean up and minimize JVMCI (JDK-8156835)
Doug Simon <doug.simon@oracle.com>
parents:
22672
diff
changeset
|
154 * |
1d4ce2d19e52
clean up and minimize JVMCI (JDK-8156835)
Doug Simon <doug.simon@oracle.com>
parents:
22672
diff
changeset
|
155 * @return the {@link ResolvedJavaType} corresponding to {@code javaClass} |
1d4ce2d19e52
clean up and minimize JVMCI (JDK-8156835)
Doug Simon <doug.simon@oracle.com>
parents:
22672
diff
changeset
|
156 */ |
22454
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
157 public synchronized ResolvedJavaType fromClass(Class<?> javaClass) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
158 WeakReference<ResolvedJavaType> typeRef = typeMap.get(javaClass); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
159 ResolvedJavaType type = typeRef != null ? typeRef.get() : null; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
160 if (type == null) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
161 type = createClass(javaClass); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
162 typeMap.put(javaClass, new WeakReference<>(type)); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
163 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
164 return type; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
165 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
166 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
167 /** |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
168 * A very simple append only chunked list implementation. |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
169 */ |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
170 static class ChunkedList<T> implements Iterable<T> { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
171 private static final int CHUNK_SIZE = 32; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
172 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
173 private static final int NEXT_CHUNK_INDEX = CHUNK_SIZE - 1; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
174 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
175 private Object[] head; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
176 private int index; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
177 private int size; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
178 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
179 ChunkedList() { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
180 head = new Object[CHUNK_SIZE]; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
181 index = 0; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
182 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
183 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
184 void add(T element) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
185 if (index == NEXT_CHUNK_INDEX) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
186 Object[] newHead = new Object[CHUNK_SIZE]; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
187 newHead[index] = head; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
188 head = newHead; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
189 index = 0; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
190 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
191 head[index++] = element; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
192 size++; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
193 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
194 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
195 Object[] getHead() { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
196 return head; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
197 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
198 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
199 public Iterator<T> iterator() { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
200 return new ChunkIterator<>(); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
201 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
202 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
203 int size() { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
204 return size; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
205 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
206 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
207 class ChunkIterator<V> implements Iterator<V> { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
208 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
209 ChunkIterator() { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
210 currentChunk = head; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
211 currentIndex = -1; |
23677 | 212 next = findNext(); |
22454
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
213 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
214 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
215 Object[] currentChunk; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
216 int currentIndex; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
217 V next; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
218 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
219 @SuppressWarnings("unchecked") |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
220 V findNext() { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
221 V result; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
222 do { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
223 currentIndex++; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
224 if (currentIndex == NEXT_CHUNK_INDEX) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
225 currentChunk = (Object[]) currentChunk[currentIndex]; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
226 currentIndex = 0; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
227 if (currentChunk == null) { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
228 return null; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
229 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
230 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
231 result = (V) currentChunk[currentIndex]; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
232 } while (result == null); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
233 return result; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
234 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
235 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
236 public boolean hasNext() { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
237 return next != null; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
238 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
239 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
240 public V next() { |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
241 V result = next; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
242 next = findNext(); |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
243 return result; |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
244 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
245 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
246 } |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
247 |
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
248 } |
23677 | 249 |
250 synchronized boolean isRegistered(MetaspaceWrapperObject wrapper) { | |
251 for (WeakReference<MetaspaceWrapperObject> m : list) { | |
252 if (m != null && m.get() == wrapper) { | |
253 return true; | |
254 } | |
255 } | |
256 return false; | |
257 } | |
22454
76af33d4d504
Make jvmci redefinition safe
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
diff
changeset
|
258 } |