Mercurial > hg > truffle
annotate src/share/vm/classfile/classLoaderData.hpp @ 12161:e1fbb86b47e4
8016277: Crash in nmethod::is_compiled_by_c1() on x86
Summary: Method pointer for zombie methods may be invalid
Reviewed-by: kvn, coleenp
author | roland |
---|---|
date | Mon, 26 Aug 2013 16:12:20 +0200 |
parents | f2110083203d |
children | e64f1fe9756b |
rev | line source |
---|---|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1 /* |
7956 | 2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
4 * |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
5 * This code is free software; you can redistribute it and/or modify it |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
6 * under the terms of the GNU General Public License version 2 only, as |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
7 * published by the Free Software Foundation. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
8 * |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
9 * This code is distributed in the hope that it will be useful, but WITHOUT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
7440 | 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
12 * version 2 for more details (a copy is included in the LICENSE file that |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
13 * accompanied this code). |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
14 * |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
15 * You should have received a copy of the GNU General Public License version |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
16 * 2 along with this work; if not, write to the Free Software Foundation, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
18 * |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
21 * questions. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
22 * |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
23 */ |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
24 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
25 #ifndef SHARE_VM_CLASSFILE_CLASSLOADERDATA_HPP |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
26 #define SHARE_VM_CLASSFILE_CLASSLOADERDATA_HPP |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
27 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
28 #include "memory/allocation.hpp" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
29 #include "memory/memRegion.hpp" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
30 #include "memory/metaspace.hpp" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
31 #include "memory/metaspaceCounters.hpp" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
32 #include "runtime/mutex.hpp" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
33 #include "utilities/growableArray.hpp" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
34 |
10405 | 35 #if INCLUDE_TRACE |
36 # include "trace/traceTime.hpp" | |
37 #endif | |
38 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
39 // |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
40 // A class loader represents a linkset. Conceptually, a linkset identifies |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
41 // the complete transitive closure of resolved links that a dynamic linker can |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
42 // produce. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
43 // |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
44 // A ClassLoaderData also encapsulates the allocation space, called a metaspace, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
45 // used by the dynamic linker to allocate the runtime representation of all |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
46 // the types it defines. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
47 // |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
48 // ClassLoaderData are stored in the runtime representation of classes and the |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
49 // system dictionary, are roots of garbage collection, and provides iterators |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
50 // for root tracing and other GC operations. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
51 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
52 class ClassLoaderData; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
53 class JNIMethodBlock; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
54 class JNIHandleBlock; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
55 class Metadebug; |
10405 | 56 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
57 // GC root for walking class loader data created |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
58 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
59 class ClassLoaderDataGraph : public AllStatic { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
60 friend class ClassLoaderData; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
61 friend class ClassLoaderDataGraphMetaspaceIterator; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
62 friend class VMStructs; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
63 private: |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
64 // All CLDs (except the null CLD) can be reached by walking _head->_next->... |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
65 static ClassLoaderData* _head; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
66 static ClassLoaderData* _unloading; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
67 // CMS support. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
68 static ClassLoaderData* _saved_head; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
69 |
10181
1cb4795305b9
8011802: NPG: init_dependencies in class loader data graph can cause invalid CLD
mgerdin
parents:
9075
diff
changeset
|
70 static ClassLoaderData* add(Handle class_loader, bool anonymous, TRAPS); |
10405 | 71 static void post_class_unload_events(void); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
72 public: |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6757
diff
changeset
|
73 static ClassLoaderData* find_or_create(Handle class_loader, TRAPS); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
74 static void purge(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
75 static void clear_claimed_marks(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
76 static void oops_do(OopClosure* f, KlassClosure* klass_closure, bool must_claim); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
77 static void always_strong_oops_do(OopClosure* blk, KlassClosure* klass_closure, bool must_claim); |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6757
diff
changeset
|
78 static void keep_alive_oops_do(OopClosure* blk, KlassClosure* klass_closure, bool must_claim); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
79 static void classes_do(KlassClosure* klass_closure); |
10405 | 80 static void classes_do(void f(Klass* const)); |
81 static void classes_unloading_do(void f(Klass* const)); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
82 static bool do_unloading(BoolObjectClosure* is_alive); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
83 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
84 // CMS support. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
85 static void remember_new_clds(bool remember) { _saved_head = (remember ? _head : NULL); } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
86 static GrowableArray<ClassLoaderData*>* new_clds(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
87 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
88 static void dump_on(outputStream * const out) PRODUCT_RETURN; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
89 static void dump() { dump_on(tty); } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
90 static void verify(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
91 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
92 #ifndef PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
93 // expensive test for pointer in metaspace for debugging |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
94 static bool contains(address x); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
95 static bool contains_loader_data(ClassLoaderData* loader_data); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
96 #endif |
10405 | 97 |
98 #if INCLUDE_TRACE | |
99 private: | |
100 static TracingTime _class_unload_time; | |
101 static void class_unload_event(Klass* const k); | |
102 #endif | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
103 }; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
104 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
105 // ClassLoaderData class |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
106 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
107 class ClassLoaderData : public CHeapObj<mtClass> { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
108 friend class VMStructs; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
109 private: |
9075
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
110 class Dependencies VALUE_OBJ_CLASS_SPEC { |
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
111 objArrayOop _list_head; |
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
112 void locked_add(objArrayHandle last, |
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
113 objArrayHandle new_dependency, |
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
114 Thread* THREAD); |
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
115 public: |
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
116 Dependencies() : _list_head(NULL) {} |
10184
9d75bcd7c890
8013136: NPG: Parallel class loading tests fail after fix for JDK-8011802
mgerdin
parents:
10181
diff
changeset
|
117 Dependencies(TRAPS) : _list_head(NULL) { |
9d75bcd7c890
8013136: NPG: Parallel class loading tests fail after fix for JDK-8011802
mgerdin
parents:
10181
diff
changeset
|
118 init(CHECK); |
9d75bcd7c890
8013136: NPG: Parallel class loading tests fail after fix for JDK-8011802
mgerdin
parents:
10181
diff
changeset
|
119 } |
9075
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
120 void add(Handle dependency, TRAPS); |
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
121 void init(TRAPS); |
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
122 void oops_do(OopClosure* f); |
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
123 }; |
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
124 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
125 friend class ClassLoaderDataGraph; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
126 friend class ClassLoaderDataGraphMetaspaceIterator; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
127 friend class MetaDataFactory; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
128 friend class Method; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
129 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
130 static ClassLoaderData * _the_null_class_loader_data; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
131 |
9075
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
132 oop _class_loader; // oop used to uniquely identify a class loader |
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
133 // class loader or a canonical class path |
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
134 Dependencies _dependencies; // holds dependencies from this class loader |
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
135 // data to others. |
ba42fd5e00e6
8010196: NPG: Internal Error: Metaspace allocation lock -- possible deadlock
mgerdin
parents:
8866
diff
changeset
|
136 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
137 Metaspace * _metaspace; // Meta-space where meta-data defined by the |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
138 // classes in the class loader are allocated. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
139 Mutex* _metaspace_lock; // Locks the metaspace for allocations and setup. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
140 bool _unloading; // true if this class loader goes away |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6757
diff
changeset
|
141 bool _keep_alive; // if this CLD can be unloaded for anonymous loaders |
7409 | 142 bool _is_anonymous; // if this CLD is for an anonymous class |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
143 volatile int _claimed; // true if claimed, for example during GC traces. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
144 // To avoid applying oop closure more than once. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
145 // Has to be an int because we cas it. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
146 Klass* _klasses; // The classes defined by the class loader. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
147 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
148 JNIHandleBlock* _handles; // Handles to constant pool arrays |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
149 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
150 // These method IDs are created for the class loader and set to NULL when the |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
151 // class loader is unloaded. They are rarely freed, only for redefine classes |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
152 // and if they lose a data race in InstanceKlass. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
153 JNIMethodBlock* _jmethod_ids; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
154 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
155 // Metadata to be deallocated when it's safe at class unloading, when |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
156 // this class loader isn't unloaded itself. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
157 GrowableArray<Metadata*>* _deallocate_list; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
158 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
159 // Support for walking class loader data objects |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
160 ClassLoaderData* _next; /// Next loader_datas created |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
161 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
162 // ReadOnly and ReadWrite metaspaces (static because only on the null |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
163 // class loader for now). |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
164 static Metaspace* _ro_metaspace; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
165 static Metaspace* _rw_metaspace; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
166 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
167 void set_next(ClassLoaderData* next) { _next = next; } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
168 ClassLoaderData* next() const { return _next; } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
169 |
10184
9d75bcd7c890
8013136: NPG: Parallel class loading tests fail after fix for JDK-8011802
mgerdin
parents:
10181
diff
changeset
|
170 ClassLoaderData(Handle h_class_loader, bool is_anonymous, Dependencies dependencies); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
171 ~ClassLoaderData(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
172 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
173 void set_metaspace(Metaspace* m) { _metaspace = m; } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
174 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
175 JNIHandleBlock* handles() const; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
176 void set_handles(JNIHandleBlock* handles); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
177 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
178 Mutex* metaspace_lock() const { return _metaspace_lock; } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
179 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
180 // GC interface. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
181 void clear_claimed() { _claimed = 0; } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
182 bool claimed() const { return _claimed == 1; } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
183 bool claim(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
184 |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6757
diff
changeset
|
185 void unload(); |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6757
diff
changeset
|
186 bool keep_alive() const { return _keep_alive; } |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6757
diff
changeset
|
187 bool is_alive(BoolObjectClosure* is_alive_closure) const; |
10405 | 188 void classes_do(void f(Klass*)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
189 void classes_do(void f(InstanceKlass*)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
190 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
191 // Deallocate free list during class unloading. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
192 void free_deallocate_list(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
193 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
194 // Allocate out of this class loader data |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
195 MetaWord* allocate(size_t size); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
196 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
197 public: |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
198 // Accessors |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
199 Metaspace* metaspace_or_null() const { return _metaspace; } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
200 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
201 static ClassLoaderData* the_null_class_loader_data() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
202 return _the_null_class_loader_data; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
203 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
204 |
7409 | 205 bool is_anonymous() const { return _is_anonymous; } |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6757
diff
changeset
|
206 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
207 static void init_null_class_loader_data() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
208 assert(_the_null_class_loader_data == NULL, "cannot initialize twice"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
209 assert(ClassLoaderDataGraph::_head == NULL, "cannot initialize twice"); |
10184
9d75bcd7c890
8013136: NPG: Parallel class loading tests fail after fix for JDK-8011802
mgerdin
parents:
10181
diff
changeset
|
210 |
9d75bcd7c890
8013136: NPG: Parallel class loading tests fail after fix for JDK-8011802
mgerdin
parents:
10181
diff
changeset
|
211 // We explicitly initialize the Dependencies object at a later phase in the initialization |
9d75bcd7c890
8013136: NPG: Parallel class loading tests fail after fix for JDK-8011802
mgerdin
parents:
10181
diff
changeset
|
212 _the_null_class_loader_data = new ClassLoaderData((oop)NULL, false, Dependencies()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
213 ClassLoaderDataGraph::_head = _the_null_class_loader_data; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
214 assert(_the_null_class_loader_data->is_the_null_class_loader_data(), "Must be"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
215 if (DumpSharedSpaces) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
216 _the_null_class_loader_data->initialize_shared_metaspaces(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
217 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
218 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
219 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
220 bool is_the_null_class_loader_data() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
221 return this == _the_null_class_loader_data; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
222 } |
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8667
diff
changeset
|
223 bool is_ext_class_loader_data() const; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
224 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
225 // The Metaspace is created lazily so may be NULL. This |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
226 // method will allocate a Metaspace if needed. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
227 Metaspace* metaspace_non_null(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
228 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
229 oop class_loader() const { return _class_loader; } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
230 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
231 // Returns true if this class loader data is for a loader going away. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
232 bool is_unloading() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
233 assert(!(is_the_null_class_loader_data() && _unloading), "The null class loader can never be unloaded"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
234 return _unloading; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
235 } |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6757
diff
changeset
|
236 // Anonymous class loader data doesn't have anything to keep them from |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6757
diff
changeset
|
237 // being unloaded during parsing the anonymous class. |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6757
diff
changeset
|
238 void set_keep_alive(bool value) { _keep_alive = value; } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
239 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
240 unsigned int identity_hash() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
241 return _class_loader == NULL ? 0 : _class_loader->identity_hash(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
242 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
243 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
244 // Used when tracing from klasses. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
245 void oops_do(OopClosure* f, KlassClosure* klass_closure, bool must_claim); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
246 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
247 void classes_do(KlassClosure* klass_closure); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
248 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
249 JNIMethodBlock* jmethod_ids() const { return _jmethod_ids; } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
250 void set_jmethod_ids(JNIMethodBlock* new_block) { _jmethod_ids = new_block; } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
251 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
252 void print_value() { print_value_on(tty); } |
7956 | 253 void print_value_on(outputStream* out) const; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
254 void dump(outputStream * const out) PRODUCT_RETURN; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
255 void verify(); |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6757
diff
changeset
|
256 const char* loader_name(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
257 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
258 jobject add_handle(Handle h); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
259 void add_class(Klass* k); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
260 void remove_class(Klass* k); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
261 void record_dependency(Klass* to, TRAPS); |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6757
diff
changeset
|
262 void init_dependencies(TRAPS); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
263 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
264 void add_to_deallocate_list(Metadata* m); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
265 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
266 static ClassLoaderData* class_loader_data(oop loader); |
8667
1f9994892f89
8008549: NPG: SystemDictionary::find(...) unnecessarily keeps class loaders alive
stefank
parents:
7956
diff
changeset
|
267 static ClassLoaderData* class_loader_data_or_null(oop loader); |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6757
diff
changeset
|
268 static ClassLoaderData* anonymous_class_loader_data(oop loader, TRAPS); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
269 static void print_loader(ClassLoaderData *loader_data, outputStream *out); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
270 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
271 // CDS support |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
272 Metaspace* ro_metaspace(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
273 Metaspace* rw_metaspace(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
274 void initialize_shared_metaspaces(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
275 }; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
276 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
277 class ClassLoaderDataGraphMetaspaceIterator : public StackObj { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
278 ClassLoaderData* _data; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
279 public: |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
280 ClassLoaderDataGraphMetaspaceIterator(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
281 ~ClassLoaderDataGraphMetaspaceIterator(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
282 bool repeat() { return _data != NULL; } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
283 Metaspace* get_next() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
284 assert(_data != NULL, "Should not be NULL in call to the iterator"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
285 Metaspace* result = _data->metaspace_or_null(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
286 _data = _data->next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
287 // This result might be NULL for class loaders without metaspace |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
288 // yet. It would be nice to return only non-null results but |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
289 // there is no guarantee that there will be a non-null result |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
290 // down the list so the caller is going to have to check. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
291 return result; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
292 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
293 }; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
294 #endif // SHARE_VM_CLASSFILE_CLASSLOADERDATA_HPP |