Ian Rogers | c765c9c | 2013-10-20 18:56:20 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 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 | |
| 17 | #ifndef ART_RUNTIME_NATIVE_SCOPED_FAST_NATIVE_OBJECT_ACCESS_H_ |
| 18 | #define ART_RUNTIME_NATIVE_SCOPED_FAST_NATIVE_OBJECT_ACCESS_H_ |
| 19 | |
Ian Rogers | c765c9c | 2013-10-20 18:56:20 -0700 | [diff] [blame] | 20 | #include "mirror/art_method.h" |
Ian Rogers | 53b8b09 | 2014-03-13 23:45:53 -0700 | [diff] [blame] | 21 | #include "scoped_thread_state_change.h" |
Ian Rogers | c765c9c | 2013-10-20 18:56:20 -0700 | [diff] [blame] | 22 | |
| 23 | namespace art { |
| 24 | |
| 25 | // Variant of ScopedObjectAccess that does no runnable transitions. Should only be used by "fast" |
| 26 | // JNI methods. |
Mathieu Chartier | 2b7c4d1 | 2014-05-19 10:52:16 -0700 | [diff] [blame] | 27 | class ScopedFastNativeObjectAccess : public ScopedObjectAccessAlreadyRunnable { |
Ian Rogers | c765c9c | 2013-10-20 18:56:20 -0700 | [diff] [blame] | 28 | public: |
| 29 | explicit ScopedFastNativeObjectAccess(JNIEnv* env) |
| 30 | LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) |
| 31 | SHARED_LOCK_FUNCTION(Locks::mutator_lock_) ALWAYS_INLINE |
Mathieu Chartier | 2b7c4d1 | 2014-05-19 10:52:16 -0700 | [diff] [blame] | 32 | : ScopedObjectAccessAlreadyRunnable(env) { |
Ian Rogers | c765c9c | 2013-10-20 18:56:20 -0700 | [diff] [blame] | 33 | Locks::mutator_lock_->AssertSharedHeld(Self()); |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 34 | DCHECK(Self()->GetManagedStack()->GetTopQuickFrame()->AsMirrorPtr()->IsFastNative()); |
Ian Rogers | c765c9c | 2013-10-20 18:56:20 -0700 | [diff] [blame] | 35 | // Don't work with raw objects in non-runnable states. |
| 36 | DCHECK_EQ(Self()->GetState(), kRunnable); |
| 37 | } |
| 38 | |
| 39 | ~ScopedFastNativeObjectAccess() UNLOCK_FUNCTION(Locks::mutator_lock_) ALWAYS_INLINE { |
| 40 | } |
| 41 | |
Ian Rogers | c765c9c | 2013-10-20 18:56:20 -0700 | [diff] [blame] | 42 | private: |
Ian Rogers | 53b8b09 | 2014-03-13 23:45:53 -0700 | [diff] [blame] | 43 | DISALLOW_COPY_AND_ASSIGN(ScopedFastNativeObjectAccess); |
Ian Rogers | c765c9c | 2013-10-20 18:56:20 -0700 | [diff] [blame] | 44 | }; |
| 45 | |
| 46 | } // namespace art |
| 47 | |
| 48 | #endif // ART_RUNTIME_NATIVE_SCOPED_FAST_NATIVE_OBJECT_ACCESS_H_ |