Tue, 17 Oct 2017 12:58:25 +0800
merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | // JvmtiTagMap |
aoqi@0 | 26 | |
aoqi@0 | 27 | #ifndef SHARE_VM_PRIMS_JVMTITAGMAP_HPP |
aoqi@0 | 28 | #define SHARE_VM_PRIMS_JVMTITAGMAP_HPP |
aoqi@0 | 29 | |
aoqi@0 | 30 | #include "gc_interface/collectedHeap.hpp" |
aoqi@0 | 31 | #include "jvmtifiles/jvmti.h" |
aoqi@0 | 32 | #include "jvmtifiles/jvmtiEnv.hpp" |
aoqi@0 | 33 | #include "memory/allocation.hpp" |
aoqi@0 | 34 | #include "memory/genCollectedHeap.hpp" |
aoqi@0 | 35 | #include "memory/universe.hpp" |
aoqi@0 | 36 | |
aoqi@0 | 37 | // forward references |
aoqi@0 | 38 | class JvmtiTagHashmap; |
aoqi@0 | 39 | class JvmtiTagHashmapEntry; |
aoqi@0 | 40 | class JvmtiTagHashmapEntryClosure; |
aoqi@0 | 41 | |
aoqi@0 | 42 | class JvmtiTagMap : public CHeapObj<mtInternal> { |
aoqi@0 | 43 | private: |
aoqi@0 | 44 | |
aoqi@0 | 45 | enum{ |
aoqi@0 | 46 | max_free_entries = 4096 // maximum number of free entries per env |
aoqi@0 | 47 | }; |
aoqi@0 | 48 | |
aoqi@0 | 49 | JvmtiEnv* _env; // the jvmti environment |
aoqi@0 | 50 | Mutex _lock; // lock for this tag map |
aoqi@0 | 51 | JvmtiTagHashmap* _hashmap; // the hashmap |
aoqi@0 | 52 | |
aoqi@0 | 53 | JvmtiTagHashmapEntry* _free_entries; // free list for this environment |
aoqi@0 | 54 | int _free_entries_count; // number of entries on the free list |
aoqi@0 | 55 | |
aoqi@0 | 56 | // create a tag map |
aoqi@0 | 57 | JvmtiTagMap(JvmtiEnv* env); |
aoqi@0 | 58 | |
aoqi@0 | 59 | // accessors |
aoqi@0 | 60 | inline Mutex* lock() { return &_lock; } |
aoqi@0 | 61 | inline JvmtiEnv* env() const { return _env; } |
aoqi@0 | 62 | |
aoqi@0 | 63 | void do_weak_oops(BoolObjectClosure* is_alive, OopClosure* f); |
aoqi@0 | 64 | |
aoqi@0 | 65 | // iterate over all entries in this tag map |
aoqi@0 | 66 | void entry_iterate(JvmtiTagHashmapEntryClosure* closure); |
aoqi@0 | 67 | |
aoqi@0 | 68 | public: |
aoqi@0 | 69 | |
aoqi@0 | 70 | // indicates if this tag map is locked |
aoqi@0 | 71 | bool is_locked() { return lock()->is_locked(); } |
aoqi@0 | 72 | |
aoqi@0 | 73 | JvmtiTagHashmap* hashmap() { return _hashmap; } |
aoqi@0 | 74 | |
aoqi@0 | 75 | // create/destroy entries |
aoqi@0 | 76 | JvmtiTagHashmapEntry* create_entry(oop ref, jlong tag); |
aoqi@0 | 77 | void destroy_entry(JvmtiTagHashmapEntry* entry); |
aoqi@0 | 78 | |
aoqi@0 | 79 | // returns true if the hashmaps are empty |
aoqi@0 | 80 | bool is_empty(); |
aoqi@0 | 81 | |
aoqi@0 | 82 | // return tag for the given environment |
aoqi@0 | 83 | static JvmtiTagMap* tag_map_for(JvmtiEnv* env); |
aoqi@0 | 84 | |
aoqi@0 | 85 | // destroy tag map |
aoqi@0 | 86 | ~JvmtiTagMap(); |
aoqi@0 | 87 | |
aoqi@0 | 88 | // set/get tag |
aoqi@0 | 89 | void set_tag(jobject obj, jlong tag); |
aoqi@0 | 90 | jlong get_tag(jobject obj); |
aoqi@0 | 91 | |
aoqi@0 | 92 | // deprecated heap iteration functions |
aoqi@0 | 93 | void iterate_over_heap(jvmtiHeapObjectFilter object_filter, |
aoqi@0 | 94 | KlassHandle klass, |
aoqi@0 | 95 | jvmtiHeapObjectCallback heap_object_callback, |
aoqi@0 | 96 | const void* user_data); |
aoqi@0 | 97 | |
aoqi@0 | 98 | void iterate_over_reachable_objects(jvmtiHeapRootCallback heap_root_callback, |
aoqi@0 | 99 | jvmtiStackReferenceCallback stack_ref_callback, |
aoqi@0 | 100 | jvmtiObjectReferenceCallback object_ref_callback, |
aoqi@0 | 101 | const void* user_data); |
aoqi@0 | 102 | |
aoqi@0 | 103 | void iterate_over_objects_reachable_from_object(jobject object, |
aoqi@0 | 104 | jvmtiObjectReferenceCallback object_reference_callback, |
aoqi@0 | 105 | const void* user_data); |
aoqi@0 | 106 | |
aoqi@0 | 107 | |
aoqi@0 | 108 | // advanced (JVMTI 1.1) heap iteration functions |
aoqi@0 | 109 | void iterate_through_heap(jint heap_filter, |
aoqi@0 | 110 | KlassHandle klass, |
aoqi@0 | 111 | const jvmtiHeapCallbacks* callbacks, |
aoqi@0 | 112 | const void* user_data); |
aoqi@0 | 113 | |
aoqi@0 | 114 | void follow_references(jint heap_filter, |
aoqi@0 | 115 | KlassHandle klass, |
aoqi@0 | 116 | jobject initial_object, |
aoqi@0 | 117 | const jvmtiHeapCallbacks* callbacks, |
aoqi@0 | 118 | const void* user_data); |
aoqi@0 | 119 | |
aoqi@0 | 120 | // get tagged objects |
aoqi@0 | 121 | jvmtiError get_objects_with_tags(const jlong* tags, jint count, |
aoqi@0 | 122 | jint* count_ptr, jobject** object_result_ptr, |
aoqi@0 | 123 | jlong** tag_result_ptr); |
aoqi@0 | 124 | |
aoqi@0 | 125 | static void weak_oops_do( |
aoqi@0 | 126 | BoolObjectClosure* is_alive, OopClosure* f) NOT_JVMTI_RETURN; |
aoqi@0 | 127 | }; |
aoqi@0 | 128 | |
aoqi@0 | 129 | #endif // SHARE_VM_PRIMS_JVMTITAGMAP_HPP |