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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_RUNTIME_NATIVE_SCOPED_FAST_NATIVE_OBJECT_ACCESS_H_
#define ART_RUNTIME_NATIVE_SCOPED_FAST_NATIVE_OBJECT_ACCESS_H_
#include "mirror/art_method-inl.h"
#include "scoped_thread_state_change.h"
namespace art {
// Variant of ScopedObjectAccess that does no runnable transitions. Should only be used by "fast"
// JNI methods.
class ScopedFastNativeObjectAccess : public ScopedObjectAccessAlreadyRunnable {
public:
explicit ScopedFastNativeObjectAccess(JNIEnv* env)
LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_)
SHARED_LOCK_FUNCTION(Locks::mutator_lock_) ALWAYS_INLINE
: ScopedObjectAccessAlreadyRunnable(env) {
Locks::mutator_lock_->AssertSharedHeld(Self());
DCHECK(Self()->GetManagedStack()->GetTopQuickFrame()->AsMirrorPtr()->IsFastNative());
// Don't work with raw objects in non-runnable states.
DCHECK_EQ(Self()->GetState(), kRunnable);
}
~ScopedFastNativeObjectAccess() UNLOCK_FUNCTION(Locks::mutator_lock_) ALWAYS_INLINE {
}
private:
DISALLOW_COPY_AND_ASSIGN(ScopedFastNativeObjectAccess);
};
} // namespace art
#endif // ART_RUNTIME_NATIVE_SCOPED_FAST_NATIVE_OBJECT_ACCESS_H_