Elliott Hughes | 2faa5f1 | 2012-01-30 14:42:07 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 16 | |
Brian Carlstrom | fc0e321 | 2013-07-17 14:40:12 -0700 | [diff] [blame] | 17 | #ifndef ART_RUNTIME_INTERN_TABLE_H_ |
| 18 | #define ART_RUNTIME_INTERN_TABLE_H_ |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 19 | |
Mathieu Chartier | cdfd39f | 2014-08-29 18:16:58 -0700 | [diff] [blame] | 20 | #include <unordered_set> |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 21 | |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 22 | #include "atomic.h" |
Mathieu Chartier | bad0267 | 2014-08-25 13:08:22 -0700 | [diff] [blame] | 23 | #include "base/allocator.h" |
Mathieu Chartier | c2e2062 | 2014-11-03 11:41:47 -0800 | [diff] [blame] | 24 | #include "base/hash_set.h" |
Ian Rogers | 719d1a3 | 2014-03-06 12:13:39 -0800 | [diff] [blame] | 25 | #include "base/mutex.h" |
Hiroshi Yamauchi | 94f7b49 | 2014-07-22 18:08:23 -0700 | [diff] [blame] | 26 | #include "gc_root.h" |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 27 | #include "gc/weak_root_state.h" |
Ian Rogers | 719d1a3 | 2014-03-06 12:13:39 -0800 | [diff] [blame] | 28 | #include "object_callbacks.h" |
| 29 | |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 30 | namespace art { |
Mathieu Chartier | 893263b | 2014-03-04 11:07:42 -0800 | [diff] [blame] | 31 | |
Mathieu Chartier | eb175f7 | 2014-10-31 11:49:27 -0700 | [diff] [blame] | 32 | namespace gc { |
| 33 | namespace space { |
| 34 | class ImageSpace; |
| 35 | } // namespace space |
| 36 | } // namespace gc |
| 37 | |
Mathieu Chartier | 893263b | 2014-03-04 11:07:42 -0800 | [diff] [blame] | 38 | enum VisitRootFlags : uint8_t; |
| 39 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 40 | namespace mirror { |
| 41 | class String; |
| 42 | } // namespace mirror |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 43 | class Transaction; |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 44 | |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 45 | /** |
| 46 | * Used to intern strings. |
| 47 | * |
| 48 | * There are actually two tables: one that holds strong references to its strings, and one that |
| 49 | * holds weak references. The former is used for string literals, for which there is an effective |
| 50 | * reference from the constant pool. The latter is used for strings interned at runtime via |
| 51 | * String.intern. Some code (XML parsers being a prime example) relies on being able to intern |
| 52 | * arbitrarily many strings for the duration of a parse without permanently increasing the memory |
| 53 | * footprint. |
| 54 | */ |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 55 | class InternTable { |
| 56 | public: |
| 57 | InternTable(); |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 58 | |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 59 | // Interns a potentially new string in the 'strong' table. May cause thread suspension. |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 60 | mirror::String* InternStrong(int32_t utf16_length, const char* utf8_data) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 61 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_); |
Brian Carlstrom | c74255f | 2011-09-11 22:47:39 -0700 | [diff] [blame] | 62 | |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 63 | // Only used by image writer. Special version that may not cause thread suspension since the GC |
Mathieu Chartier | 90ef3db | 2015-08-04 15:19:41 -0700 | [diff] [blame] | 64 | // can not be running while we are doing image writing. Maybe be called while while holding a |
| 65 | // lock since there will not be thread suspension. |
| 66 | mirror::String* InternStrongImageString(mirror::String* s) |
| 67 | SHARED_REQUIRES(Locks::mutator_lock_); |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 68 | |
| 69 | // Interns a potentially new string in the 'strong' table. May cause thread suspension. |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 70 | mirror::String* InternStrong(const char* utf8_data) SHARED_REQUIRES(Locks::mutator_lock_) |
| 71 | REQUIRES(!Roles::uninterruptible_); |
Brian Carlstrom | c74255f | 2011-09-11 22:47:39 -0700 | [diff] [blame] | 72 | |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 73 | // Interns a potentially new string in the 'strong' table. May cause thread suspension. |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 74 | mirror::String* InternStrong(mirror::String* s) SHARED_REQUIRES(Locks::mutator_lock_) |
| 75 | REQUIRES(!Roles::uninterruptible_); |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 76 | |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 77 | // Interns a potentially new string in the 'weak' table. May cause thread suspension. |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 78 | mirror::String* InternWeak(mirror::String* s) SHARED_REQUIRES(Locks::mutator_lock_) |
| 79 | REQUIRES(!Roles::uninterruptible_); |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 80 | |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 81 | void SweepInternTableWeaks(IsMarkedVisitor* visitor) SHARED_REQUIRES(Locks::mutator_lock_) |
| 82 | REQUIRES(!Locks::intern_table_lock_); |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 83 | |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 84 | bool ContainsWeak(mirror::String* s) SHARED_REQUIRES(Locks::mutator_lock_) |
| 85 | REQUIRES(!Locks::intern_table_lock_); |
Brian Carlstrom | a663ea5 | 2011-08-19 23:33:41 -0700 | [diff] [blame] | 86 | |
Mathieu Chartier | eb175f7 | 2014-10-31 11:49:27 -0700 | [diff] [blame] | 87 | // Total number of interned strings. |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 88 | size_t Size() const REQUIRES(!Locks::intern_table_lock_); |
Mathieu Chartier | eb175f7 | 2014-10-31 11:49:27 -0700 | [diff] [blame] | 89 | // Total number of weakly live interned strings. |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 90 | size_t StrongSize() const REQUIRES(!Locks::intern_table_lock_); |
Mathieu Chartier | eb175f7 | 2014-10-31 11:49:27 -0700 | [diff] [blame] | 91 | // Total number of strongly live interned strings. |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 92 | size_t WeakSize() const REQUIRES(!Locks::intern_table_lock_); |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 93 | |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 94 | void VisitRoots(RootVisitor* visitor, VisitRootFlags flags) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 95 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(!Locks::intern_table_lock_); |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 96 | |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 97 | void DumpForSigQuit(std::ostream& os) const REQUIRES(!Locks::intern_table_lock_); |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 98 | |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 99 | void BroadcastForNewInterns() SHARED_REQUIRES(Locks::mutator_lock_); |
Mathieu Chartier | c11d9b8 | 2013-09-19 10:01:59 -0700 | [diff] [blame] | 100 | |
Mathieu Chartier | 205b762 | 2016-01-06 15:47:09 -0800 | [diff] [blame^] | 101 | // Adds all of the resolved image strings from the image spaces into the intern table. The |
Mathieu Chartier | ea0831f | 2015-12-29 13:17:37 -0800 | [diff] [blame] | 102 | // advantage of doing this is preventing expensive DexFile::FindStringId calls. Sets |
Mathieu Chartier | 205b762 | 2016-01-06 15:47:09 -0800 | [diff] [blame^] | 103 | // images_added_to_intern_table_ to true. |
| 104 | void AddImagesStringsToTable(const std::vector<gc::space::ImageSpace*>& image_spaces) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 105 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(!Locks::intern_table_lock_); |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 106 | |
Mathieu Chartier | ea0831f | 2015-12-29 13:17:37 -0800 | [diff] [blame] | 107 | // Add a new intern table for inserting to, previous intern tables are still there but no |
| 108 | // longer inserted into and ideally unmodified. This is done to prevent dirty pages. |
| 109 | void AddNewTable() |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 110 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(!Locks::intern_table_lock_); |
Mathieu Chartier | d39645e | 2015-06-09 17:50:29 -0700 | [diff] [blame] | 111 | |
| 112 | // Read the intern table from memory. The elements aren't copied, the intern hash set data will |
| 113 | // point to somewhere within ptr. Only reads the strong interns. |
Mathieu Chartier | ea0831f | 2015-12-29 13:17:37 -0800 | [diff] [blame] | 114 | size_t AddTableFromMemory(const uint8_t* ptr) REQUIRES(!Locks::intern_table_lock_) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 115 | SHARED_REQUIRES(Locks::mutator_lock_); |
Mathieu Chartier | d39645e | 2015-06-09 17:50:29 -0700 | [diff] [blame] | 116 | |
| 117 | // Write the post zygote intern table to a pointer. Only writes the strong interns since it is |
| 118 | // expected that there is no weak interns since this is called from the image writer. |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 119 | size_t WriteToMemory(uint8_t* ptr) SHARED_REQUIRES(Locks::mutator_lock_) |
| 120 | REQUIRES(!Locks::intern_table_lock_); |
Mathieu Chartier | d39645e | 2015-06-09 17:50:29 -0700 | [diff] [blame] | 121 | |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 122 | // Change the weak root state. May broadcast to waiters. |
| 123 | void ChangeWeakRootState(gc::WeakRootState new_state) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 124 | REQUIRES(!Locks::intern_table_lock_); |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 125 | |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 126 | private: |
Mathieu Chartier | cdfd39f | 2014-08-29 18:16:58 -0700 | [diff] [blame] | 127 | class StringHashEquals { |
| 128 | public: |
Mathieu Chartier | c2e2062 | 2014-11-03 11:41:47 -0800 | [diff] [blame] | 129 | std::size_t operator()(const GcRoot<mirror::String>& root) const NO_THREAD_SAFETY_ANALYSIS; |
| 130 | bool operator()(const GcRoot<mirror::String>& a, const GcRoot<mirror::String>& b) const |
Mathieu Chartier | cdfd39f | 2014-08-29 18:16:58 -0700 | [diff] [blame] | 131 | NO_THREAD_SAFETY_ANALYSIS; |
| 132 | }; |
Mathieu Chartier | c2e2062 | 2014-11-03 11:41:47 -0800 | [diff] [blame] | 133 | class GcRootEmptyFn { |
| 134 | public: |
| 135 | void MakeEmpty(GcRoot<mirror::String>& item) const { |
| 136 | item = GcRoot<mirror::String>(); |
| 137 | } |
| 138 | bool IsEmpty(const GcRoot<mirror::String>& item) const { |
| 139 | return item.IsNull(); |
| 140 | } |
| 141 | }; |
Mathieu Chartier | eb175f7 | 2014-10-31 11:49:27 -0700 | [diff] [blame] | 142 | |
| 143 | // Table which holds pre zygote and post zygote interned strings. There is one instance for |
| 144 | // weak interns and strong interns. |
| 145 | class Table { |
| 146 | public: |
Mathieu Chartier | 32cc9ee | 2015-10-15 09:19:15 -0700 | [diff] [blame] | 147 | Table(); |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 148 | mirror::String* Find(mirror::String* s) SHARED_REQUIRES(Locks::mutator_lock_) |
| 149 | REQUIRES(Locks::intern_table_lock_); |
| 150 | void Insert(mirror::String* s) SHARED_REQUIRES(Locks::mutator_lock_) |
| 151 | REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | eb175f7 | 2014-10-31 11:49:27 -0700 | [diff] [blame] | 152 | void Remove(mirror::String* s) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 153 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | bb87e0f | 2015-04-03 11:21:55 -0700 | [diff] [blame] | 154 | void VisitRoots(RootVisitor* visitor) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 155 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | 9750995 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 156 | void SweepWeaks(IsMarkedVisitor* visitor) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 157 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | ea0831f | 2015-12-29 13:17:37 -0800 | [diff] [blame] | 158 | // Add a new intern table that will only be inserted into from now on. |
| 159 | void AddNewTable() REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 160 | size_t Size() const REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | ea0831f | 2015-12-29 13:17:37 -0800 | [diff] [blame] | 161 | // Read and add an intern table from ptr. |
| 162 | // Tables read are inserted at the front of the table array. Only checks for conflicts in |
| 163 | // debug builds. Returns how many bytes were read. |
| 164 | size_t AddTableFromMemory(const uint8_t* ptr) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 165 | REQUIRES(Locks::intern_table_lock_) SHARED_REQUIRES(Locks::mutator_lock_); |
Mathieu Chartier | 205b762 | 2016-01-06 15:47:09 -0800 | [diff] [blame^] | 166 | // Write the intern tables to ptr, if there are multiple tables they are combined into a single |
| 167 | // one. Returns how many bytes were written. |
Mathieu Chartier | ea0831f | 2015-12-29 13:17:37 -0800 | [diff] [blame] | 168 | size_t WriteToMemory(uint8_t* ptr) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 169 | REQUIRES(Locks::intern_table_lock_) SHARED_REQUIRES(Locks::mutator_lock_); |
Mathieu Chartier | eb175f7 | 2014-10-31 11:49:27 -0700 | [diff] [blame] | 170 | |
| 171 | private: |
Mathieu Chartier | c2e2062 | 2014-11-03 11:41:47 -0800 | [diff] [blame] | 172 | typedef HashSet<GcRoot<mirror::String>, GcRootEmptyFn, StringHashEquals, StringHashEquals, |
Mathieu Chartier | eb175f7 | 2014-10-31 11:49:27 -0700 | [diff] [blame] | 173 | TrackingAllocator<GcRoot<mirror::String>, kAllocatorTagInternTable>> UnorderedSet; |
| 174 | |
Mathieu Chartier | 9750995 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 175 | void SweepWeaks(UnorderedSet* set, IsMarkedVisitor* visitor) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 176 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | eb175f7 | 2014-10-31 11:49:27 -0700 | [diff] [blame] | 177 | |
Mathieu Chartier | ea0831f | 2015-12-29 13:17:37 -0800 | [diff] [blame] | 178 | // We call AddNewTable when we create the zygote to reduce private dirty pages caused by |
| 179 | // modifying the zygote intern table. The back of table is modified when strings are interned. |
| 180 | std::vector<UnorderedSet> tables_; |
Mathieu Chartier | eb175f7 | 2014-10-31 11:49:27 -0700 | [diff] [blame] | 181 | }; |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 182 | |
Mathieu Chartier | 90ef3db | 2015-08-04 15:19:41 -0700 | [diff] [blame] | 183 | // Insert if non null, otherwise return null. Must be called holding the mutator lock. |
| 184 | // If holding_locks is true, then we may also hold other locks. If holding_locks is true, then we |
| 185 | // require GC is not running since it is not safe to wait while holding locks. |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 186 | mirror::String* Insert(mirror::String* s, bool is_strong, bool holding_locks) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 187 | REQUIRES(!Locks::intern_table_lock_) SHARED_REQUIRES(Locks::mutator_lock_); |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 188 | |
Mathieu Chartier | cdfd39f | 2014-08-29 18:16:58 -0700 | [diff] [blame] | 189 | mirror::String* LookupStrong(mirror::String* s) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 190 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | cdfd39f | 2014-08-29 18:16:58 -0700 | [diff] [blame] | 191 | mirror::String* LookupWeak(mirror::String* s) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 192 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | cdfd39f | 2014-08-29 18:16:58 -0700 | [diff] [blame] | 193 | mirror::String* InsertStrong(mirror::String* s) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 194 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | cdfd39f | 2014-08-29 18:16:58 -0700 | [diff] [blame] | 195 | mirror::String* InsertWeak(mirror::String* s) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 196 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | cdfd39f | 2014-08-29 18:16:58 -0700 | [diff] [blame] | 197 | void RemoveStrong(mirror::String* s) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 198 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | cdfd39f | 2014-08-29 18:16:58 -0700 | [diff] [blame] | 199 | void RemoveWeak(mirror::String* s) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 200 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 201 | |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 202 | // Transaction rollback access. |
Mathieu Chartier | eb175f7 | 2014-10-31 11:49:27 -0700 | [diff] [blame] | 203 | mirror::String* LookupStringFromImage(mirror::String* s) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 204 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | cdfd39f | 2014-08-29 18:16:58 -0700 | [diff] [blame] | 205 | mirror::String* InsertStrongFromTransaction(mirror::String* s) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 206 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | cdfd39f | 2014-08-29 18:16:58 -0700 | [diff] [blame] | 207 | mirror::String* InsertWeakFromTransaction(mirror::String* s) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 208 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | cdfd39f | 2014-08-29 18:16:58 -0700 | [diff] [blame] | 209 | void RemoveStrongFromTransaction(mirror::String* s) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 210 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | cdfd39f | 2014-08-29 18:16:58 -0700 | [diff] [blame] | 211 | void RemoveWeakFromTransaction(mirror::String* s) |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 212 | SHARED_REQUIRES(Locks::mutator_lock_) REQUIRES(Locks::intern_table_lock_); |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 213 | |
Mathieu Chartier | ea0831f | 2015-12-29 13:17:37 -0800 | [diff] [blame] | 214 | size_t AddTableFromMemoryLocked(const uint8_t* ptr) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 215 | REQUIRES(Locks::intern_table_lock_) SHARED_REQUIRES(Locks::mutator_lock_); |
Mathieu Chartier | d39645e | 2015-06-09 17:50:29 -0700 | [diff] [blame] | 216 | |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 217 | // Change the weak root state. May broadcast to waiters. |
| 218 | void ChangeWeakRootStateLocked(gc::WeakRootState new_state) |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 219 | REQUIRES(Locks::intern_table_lock_); |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 220 | |
| 221 | // Wait until we can read weak roots. |
Mathieu Chartier | 9044347 | 2015-07-16 20:32:27 -0700 | [diff] [blame] | 222 | void WaitUntilAccessible(Thread* self) |
| 223 | REQUIRES(Locks::intern_table_lock_) SHARED_REQUIRES(Locks::mutator_lock_); |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 224 | |
Mathieu Chartier | ea0831f | 2015-12-29 13:17:37 -0800 | [diff] [blame] | 225 | bool images_added_to_intern_table_ GUARDED_BY(Locks::intern_table_lock_); |
Mathieu Chartier | 893263b | 2014-03-04 11:07:42 -0800 | [diff] [blame] | 226 | bool log_new_roots_ GUARDED_BY(Locks::intern_table_lock_); |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 227 | ConditionVariable weak_intern_condition_ GUARDED_BY(Locks::intern_table_lock_); |
Hiroshi Yamauchi | a91a4bc | 2014-06-13 16:44:55 -0700 | [diff] [blame] | 228 | // Since this contains (strong) roots, they need a read barrier to |
| 229 | // enable concurrent intern table (strong) root scan. Do not |
| 230 | // directly access the strings in it. Use functions that contain |
| 231 | // read barriers. |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 232 | Table strong_interns_ GUARDED_BY(Locks::intern_table_lock_); |
Mathieu Chartier | cdfd39f | 2014-08-29 18:16:58 -0700 | [diff] [blame] | 233 | std::vector<GcRoot<mirror::String>> new_strong_intern_roots_ |
Mathieu Chartier | 893263b | 2014-03-04 11:07:42 -0800 | [diff] [blame] | 234 | GUARDED_BY(Locks::intern_table_lock_); |
Hiroshi Yamauchi | a91a4bc | 2014-06-13 16:44:55 -0700 | [diff] [blame] | 235 | // Since this contains (weak) roots, they need a read barrier. Do |
| 236 | // not directly access the strings in it. Use functions that contain |
| 237 | // read barriers. |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 238 | Table weak_interns_ GUARDED_BY(Locks::intern_table_lock_); |
Mathieu Chartier | 14c3bf9 | 2015-07-13 14:35:43 -0700 | [diff] [blame] | 239 | // Weak root state, used for concurrent system weak processing and more. |
| 240 | gc::WeakRootState weak_root_state_ GUARDED_BY(Locks::intern_table_lock_); |
Mathieu Chartier | ed8990a | 2015-07-23 14:11:16 -0700 | [diff] [blame] | 241 | |
| 242 | friend class Transaction; |
| 243 | DISALLOW_COPY_AND_ASSIGN(InternTable); |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 244 | }; |
| 245 | |
| 246 | } // namespace art |
| 247 | |
Brian Carlstrom | fc0e321 | 2013-07-17 14:40:12 -0700 | [diff] [blame] | 248 | #endif // ART_RUNTIME_INTERN_TABLE_H_ |