1 /*
2  * Copyright (C) 2005 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 //
18 // Handy utility functions and portability code.
19 //
20 #ifndef _LIBS_UTILS_MISC_H
21 #define _LIBS_UTILS_MISC_H
22 
23 #include <utils/Endian.h>
24 
25 /* get #of elements in a static array
26  * DO NOT USE: please use std::vector/std::array instead
27  */
28 #ifndef NELEM
29 # define NELEM(x) ((int) (sizeof(x) / sizeof((x)[0])))
30 #endif
31 
32 namespace android {
33 
34 typedef void (*sysprop_change_callback)(void);
35 void add_sysprop_change_callback(sysprop_change_callback cb, int priority);
36 void report_sysprop_change();
37 
38 }  // namespace android
39 
40 #endif // _LIBS_UTILS_MISC_H
41