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annotate src/share/vm/prims/jvmtiTagMap.hpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | c18cbe5936b8 |
| children | 7246a374a9f2 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2003, 2010, 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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6941466: Oracle rebranding changes for Hotspot repositories
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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 #ifndef JVMTI_KERNEL | |
| 31 #include "gc_interface/collectedHeap.hpp" | |
| 32 #include "jvmtifiles/jvmti.h" | |
| 33 #include "jvmtifiles/jvmtiEnv.hpp" | |
| 34 #include "memory/allocation.hpp" | |
| 35 #include "memory/genCollectedHeap.hpp" | |
| 36 #include "memory/universe.hpp" | |
| 37 #endif | |
| 0 | 38 |
| 39 // forward references | |
| 40 class JvmtiTagHashmap; | |
| 41 class JvmtiTagHashmapEntry; | |
| 42 class JvmtiTagHashmapEntryClosure; | |
| 43 | |
| 44 class JvmtiTagMap : public CHeapObj { | |
| 45 private: | |
| 46 | |
| 47 enum{ | |
| 48 n_hashmaps = 2, // encapsulates 2 hashmaps | |
| 49 max_free_entries = 4096 // maximum number of free entries per env | |
| 50 }; | |
| 51 | |
| 52 // memory region for young generation | |
| 53 static MemRegion _young_gen; | |
| 54 static void get_young_generation(); | |
| 55 | |
| 56 JvmtiEnv* _env; // the jvmti environment | |
| 57 Mutex _lock; // lock for this tag map | |
| 58 JvmtiTagHashmap* _hashmap[n_hashmaps]; // the hashmaps | |
| 59 | |
| 60 JvmtiTagHashmapEntry* _free_entries; // free list for this environment | |
| 61 int _free_entries_count; // number of entries on the free list | |
| 62 | |
| 63 // create a tag map | |
| 64 JvmtiTagMap(JvmtiEnv* env); | |
| 65 | |
| 66 // accessors | |
| 67 inline Mutex* lock() { return &_lock; } | |
| 68 inline JvmtiEnv* env() const { return _env; } | |
| 69 | |
| 70 // rehash tags maps for generation start to end | |
| 71 void rehash(int start, int end); | |
| 72 | |
| 73 // indicates if the object is in the young generation | |
| 74 static bool is_in_young(oop o); | |
| 75 | |
| 76 // iterate over all entries in this tag map | |
| 77 void entry_iterate(JvmtiTagHashmapEntryClosure* closure); | |
| 78 | |
| 79 public: | |
| 80 | |
| 81 // indicates if this tag map is locked | |
| 82 bool is_locked() { return lock()->is_locked(); } | |
| 83 | |
| 84 // return the appropriate hashmap for a given object | |
| 85 JvmtiTagHashmap* hashmap_for(oop o); | |
| 86 | |
| 87 // create/destroy entries | |
| 88 JvmtiTagHashmapEntry* create_entry(jweak ref, jlong tag); | |
| 89 void destroy_entry(JvmtiTagHashmapEntry* entry); | |
| 90 | |
| 91 // returns true if the hashmaps are empty | |
| 92 bool is_empty(); | |
| 93 | |
| 94 // return tag for the given environment | |
| 95 static JvmtiTagMap* tag_map_for(JvmtiEnv* env); | |
| 96 | |
| 97 // destroy tag map | |
| 98 ~JvmtiTagMap(); | |
| 99 | |
| 100 // set/get tag | |
| 101 void set_tag(jobject obj, jlong tag); | |
| 102 jlong get_tag(jobject obj); | |
| 103 | |
| 104 // deprecated heap iteration functions | |
| 105 void iterate_over_heap(jvmtiHeapObjectFilter object_filter, | |
| 106 KlassHandle klass, | |
| 107 jvmtiHeapObjectCallback heap_object_callback, | |
| 108 const void* user_data); | |
| 109 | |
| 110 void iterate_over_reachable_objects(jvmtiHeapRootCallback heap_root_callback, | |
| 111 jvmtiStackReferenceCallback stack_ref_callback, | |
| 112 jvmtiObjectReferenceCallback object_ref_callback, | |
| 113 const void* user_data); | |
| 114 | |
| 115 void iterate_over_objects_reachable_from_object(jobject object, | |
| 116 jvmtiObjectReferenceCallback object_reference_callback, | |
| 117 const void* user_data); | |
| 118 | |
| 119 | |
| 120 // advanced (JVMTI 1.1) heap iteration functions | |
| 121 void iterate_through_heap(jint heap_filter, | |
| 122 KlassHandle klass, | |
| 123 const jvmtiHeapCallbacks* callbacks, | |
| 124 const void* user_data); | |
| 125 | |
| 126 void follow_references(jint heap_filter, | |
| 127 KlassHandle klass, | |
| 128 jobject initial_object, | |
| 129 const jvmtiHeapCallbacks* callbacks, | |
| 130 const void* user_data); | |
| 131 | |
| 132 // get tagged objects | |
| 133 jvmtiError get_objects_with_tags(const jlong* tags, jint count, | |
| 134 jint* count_ptr, jobject** object_result_ptr, | |
| 135 jlong** tag_result_ptr); | |
| 136 | |
| 137 // call post-GC to rehash the tag maps. | |
| 138 static void gc_epilogue(bool full); | |
| 139 | |
| 140 // call after referencing processing has completed (CMS) | |
| 141 static void cms_ref_processing_epilogue(); | |
| 142 }; | |
| 143 | |
| 1972 | 144 #endif // SHARE_VM_PRIMS_JVMTITAGMAP_HPP |