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annotate src/share/vm/prims/jvmtiTagMap.hpp @ 17362:03eef43d364f
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author | Bernhard Urban <bernhard.urban@jku.at> |
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date | Tue, 07 Oct 2014 02:56:42 -0700 |
parents | 8b46b0196eb0 |
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0 | 1 /* |
7951 | 2 * Copyright (c) 2003, 2013, 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // JvmtiTagMap | |
26 | |
1972 | 27 #ifndef SHARE_VM_PRIMS_JVMTITAGMAP_HPP |
28 #define SHARE_VM_PRIMS_JVMTITAGMAP_HPP | |
29 | |
30 #include "gc_interface/collectedHeap.hpp" | |
31 #include "jvmtifiles/jvmti.h" | |
32 #include "jvmtifiles/jvmtiEnv.hpp" | |
33 #include "memory/allocation.hpp" | |
34 #include "memory/genCollectedHeap.hpp" | |
35 #include "memory/universe.hpp" | |
0 | 36 |
37 // forward references | |
38 class JvmtiTagHashmap; | |
39 class JvmtiTagHashmapEntry; | |
40 class JvmtiTagHashmapEntryClosure; | |
41 | |
6197 | 42 class JvmtiTagMap : public CHeapObj<mtInternal> { |
0 | 43 private: |
44 | |
45 enum{ | |
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46 max_free_entries = 4096 // maximum number of free entries per env |
0 | 47 }; |
48 | |
49 JvmtiEnv* _env; // the jvmti environment | |
50 Mutex _lock; // lock for this tag map | |
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51 JvmtiTagHashmap* _hashmap; // the hashmap |
0 | 52 |
53 JvmtiTagHashmapEntry* _free_entries; // free list for this environment | |
54 int _free_entries_count; // number of entries on the free list | |
55 | |
56 // create a tag map | |
57 JvmtiTagMap(JvmtiEnv* env); | |
58 | |
59 // accessors | |
60 inline Mutex* lock() { return &_lock; } | |
61 inline JvmtiEnv* env() const { return _env; } | |
62 | |
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63 void do_weak_oops(BoolObjectClosure* is_alive, OopClosure* f); |
0 | 64 |
65 // iterate over all entries in this tag map | |
66 void entry_iterate(JvmtiTagHashmapEntryClosure* closure); | |
67 | |
68 public: | |
69 | |
70 // indicates if this tag map is locked | |
71 bool is_locked() { return lock()->is_locked(); } | |
72 | |
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73 JvmtiTagHashmap* hashmap() { return _hashmap; } |
0 | 74 |
75 // create/destroy entries | |
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76 JvmtiTagHashmapEntry* create_entry(oop ref, jlong tag); |
0 | 77 void destroy_entry(JvmtiTagHashmapEntry* entry); |
78 | |
79 // returns true if the hashmaps are empty | |
80 bool is_empty(); | |
81 | |
82 // return tag for the given environment | |
83 static JvmtiTagMap* tag_map_for(JvmtiEnv* env); | |
84 | |
85 // destroy tag map | |
86 ~JvmtiTagMap(); | |
87 | |
88 // set/get tag | |
89 void set_tag(jobject obj, jlong tag); | |
90 jlong get_tag(jobject obj); | |
91 | |
92 // deprecated heap iteration functions | |
93 void iterate_over_heap(jvmtiHeapObjectFilter object_filter, | |
94 KlassHandle klass, | |
95 jvmtiHeapObjectCallback heap_object_callback, | |
96 const void* user_data); | |
97 | |
98 void iterate_over_reachable_objects(jvmtiHeapRootCallback heap_root_callback, | |
99 jvmtiStackReferenceCallback stack_ref_callback, | |
100 jvmtiObjectReferenceCallback object_ref_callback, | |
101 const void* user_data); | |
102 | |
103 void iterate_over_objects_reachable_from_object(jobject object, | |
104 jvmtiObjectReferenceCallback object_reference_callback, | |
105 const void* user_data); | |
106 | |
107 | |
108 // advanced (JVMTI 1.1) heap iteration functions | |
109 void iterate_through_heap(jint heap_filter, | |
110 KlassHandle klass, | |
111 const jvmtiHeapCallbacks* callbacks, | |
112 const void* user_data); | |
113 | |
114 void follow_references(jint heap_filter, | |
115 KlassHandle klass, | |
116 jobject initial_object, | |
117 const jvmtiHeapCallbacks* callbacks, | |
118 const void* user_data); | |
119 | |
120 // get tagged objects | |
121 jvmtiError get_objects_with_tags(const jlong* tags, jint count, | |
122 jint* count_ptr, jobject** object_result_ptr, | |
123 jlong** tag_result_ptr); | |
124 | |
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125 static void weak_oops_do( |
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126 BoolObjectClosure* is_alive, OopClosure* f) NOT_JVMTI_RETURN; |
0 | 127 }; |
128 | |
1972 | 129 #endif // SHARE_VM_PRIMS_JVMTITAGMAP_HPP |