Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [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 | */ |
| 16 | |
Brian Carlstrom | fc0e321 | 2013-07-17 14:40:12 -0700 | [diff] [blame] | 17 | #ifndef ART_RUNTIME_SIRT_REF_H_ |
| 18 | #define ART_RUNTIME_SIRT_REF_H_ |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 19 | |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 20 | #include "base/casts.h" |
Elliott Hughes | 07ed66b | 2012-12-12 18:34:25 -0800 | [diff] [blame] | 21 | #include "base/logging.h" |
Elliott Hughes | 7616005 | 2012-12-12 16:31:20 -0800 | [diff] [blame] | 22 | #include "base/macros.h" |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 23 | #include "thread.h" |
| 24 | |
| 25 | namespace art { |
| 26 | |
| 27 | template<class T> |
| 28 | class SirtRef { |
| 29 | public: |
| 30 | SirtRef(Thread* self, T* object) : self_(self), sirt_(object) { |
| 31 | self_->PushSirt(&sirt_); |
| 32 | } |
| 33 | ~SirtRef() { |
Ian Rogers | d0fbd85 | 2013-09-24 18:17:04 -0700 | [diff] [blame] | 34 | StackIndirectReferenceTable* top_sirt = self_->PopSirt(); |
| 35 | DCHECK_EQ(top_sirt, &sirt_); |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 36 | } |
| 37 | |
| 38 | T& operator*() const { return *get(); } |
| 39 | T* operator->() const { return get(); } |
| 40 | T* get() const { |
| 41 | return down_cast<T*>(sirt_.GetReference(0)); |
| 42 | } |
| 43 | |
| 44 | void reset(T* object = NULL) { |
| 45 | sirt_.SetReference(0, object); |
| 46 | } |
| 47 | |
| 48 | private: |
| 49 | Thread* const self_; |
| 50 | StackIndirectReferenceTable sirt_; |
| 51 | |
| 52 | DISALLOW_COPY_AND_ASSIGN(SirtRef); |
| 53 | }; |
| 54 | |
| 55 | } // namespace art |
| 56 | |
Brian Carlstrom | fc0e321 | 2013-07-17 14:40:12 -0700 | [diff] [blame] | 57 | #endif // ART_RUNTIME_SIRT_REF_H_ |