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1e494cf4 JB |
1 | /* |
2 | * Copyright (C) 2009 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 NATIVE_HANDLE_H_ | |
18 | #define NATIVE_HANDLE_H_ | |
19 | ||
20 | #ifdef __cplusplus | |
21 | extern "C" { | |
22 | #endif | |
23 | ||
24 | typedef struct native_handle | |
25 | { | |
26 | int version; /* sizeof(native_handle_t) */ | |
27 | int numFds; /* number of file-descriptors at &data[0] */ | |
28 | int numInts; /* number of ints at &data[numFds] */ | |
29 | int data[0]; /* numFds + numInts ints */ | |
30 | } native_handle_t; | |
31 | ||
32 | /* | |
33 | * native_handle_close | |
34 | * | |
35 | * closes the file descriptors contained in this native_handle_t | |
36 | * | |
37 | * return 0 on success, or a negative error code on failure | |
38 | * | |
39 | */ | |
40 | int native_handle_close(const native_handle_t* h); | |
41 | ||
42 | ||
43 | /* | |
44 | * native_handle_create | |
45 | * | |
46 | * creates a native_handle_t and initializes it. must be destroyed with | |
47 | * native_handle_delete(). | |
48 | * | |
49 | */ | |
50 | native_handle_t* native_handle_create(int numFds, int numInts); | |
51 | ||
52 | /* | |
53 | * native_handle_delete | |
54 | * | |
55 | * frees a native_handle_t allocated with native_handle_create(). | |
56 | * This ONLY frees the memory allocated for the native_handle_t, but doesn't | |
57 | * close the file descriptors; which can be achieved with native_handle_close(). | |
58 | * | |
59 | * return 0 on success, or a negative error code on failure | |
60 | * | |
61 | */ | |
62 | int native_handle_delete(native_handle_t* h); | |
63 | ||
64 | ||
65 | #ifdef __cplusplus | |
66 | } | |
67 | #endif | |
68 | ||
69 | #endif /* NATIVE_HANDLE_H_ */ |