1 /*
2  * Copyright 2014 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 ANDROID_NATIVE_HANDLE_H
18 #define ANDROID_NATIVE_HANDLE_H
19 
20 #include <utils/RefBase.h>
21 #include <utils/StrongPointer.h>
22 
23 typedef struct native_handle native_handle_t;
24 
25 namespace android {
26 
27 class NativeHandle : public LightRefBase<NativeHandle> {
28 public:
29     // Create a refcounted wrapper around a native_handle_t, and declare
30     // whether the wrapper owns the handle (so that it should clean up the
31     // handle upon destruction) or not.
32     // If handle is NULL, no NativeHandle will be created.
33     static sp<NativeHandle> create(native_handle_t* handle, bool ownsHandle);
34 
handle()35     const native_handle_t* handle() const {
36         return mHandle;
37     }
38 
39 private:
40     // for access to the destructor
41     friend class LightRefBase<NativeHandle>;
42 
43     NativeHandle(native_handle_t* handle, bool ownsHandle);
44     ~NativeHandle();
45 
46     native_handle_t* mHandle;
47     bool mOwnsHandle;
48 
49     // non-copyable
50     NativeHandle(const NativeHandle&);
51     NativeHandle& operator=(const NativeHandle&);
52 };
53 
54 } // namespace android
55 
56 #endif // ANDROID_NATIVE_HANDLE_H
57