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 20 #include <jni.h> 21 22 #include "base/macros.h" 23 #include "scoped_thread_state_change.h" 24 25 namespace art HIDDEN { 26 27 // Variant of ScopedObjectAccess that does no runnable transitions. Should only be used by "fast" 28 // JNI methods. 29 class ScopedFastNativeObjectAccess : public ScopedObjectAccessAlreadyRunnable { 30 public: 31 ALWAYS_INLINE explicit ScopedFastNativeObjectAccess(JNIEnv* env) 32 REQUIRES(!Locks::thread_suspend_count_lock_) 33 SHARED_LOCK_FUNCTION(Locks::mutator_lock_); 34 ~ScopedFastNativeObjectAccess()35 ALWAYS_INLINE ~ScopedFastNativeObjectAccess() UNLOCK_FUNCTION(Locks::mutator_lock_) {} 36 37 private: 38 DISALLOW_COPY_AND_ASSIGN(ScopedFastNativeObjectAccess); 39 }; 40 41 } // namespace art 42 43 #endif // ART_RUNTIME_NATIVE_SCOPED_FAST_NATIVE_OBJECT_ACCESS_H_ 44